СПОСОБ АДДИТИВНОГО ИЗГОТОВЛЕНИЯ НЕОРГАНИЧЕСКОЙ ФИЛЬТРАЦИОННОЙ ПОДЛОЖКИ ИЗ ТЕРМОПЛАВКОЙ КОМПОЗИЦИИ И ПОЛУЧАЕМАЯ МЕМБРАНА

Группа изобретений относится к фильтрации текучих сред. Раскрыты способ изготовления пористой монолитной неорганической подложки, способ получения мембраны для тангенциальной фильтрации, пористая монолитная неорганическая подложка и мембрана для тангенциальной фильтрации. Способ изготовления по меньшей мере одной пористой монолитной неорганической подложки, имеющей пористость, составляющую от 10% до 60%, и средний диаметр пор в диапазоне от 0,5 мкм до 50 мкм, включает подготовку неорганической композиции, содержащей порошкообразную твердую неорганическую фазу, подачу композиции в экструзионную головку машины для 3D-печати для построения сырой трехмерной структуры, поддающейся манипуляциям. Затем помещают полученную структуру в печь для термической обработки с целью спекания при температуре, составляющей от 0,5- до 1-кратной температуры плавления по меньшей мере одного материала, образующего неорганическую фазу. Техническим результатом является обеспечение получения механически прочной пористой ...

ЖЕРТВЕННЫЙ КЕРАМИЧЕСКИЙ МАТЕРИАЛ ДЛЯ ЛОВУШКИ РАСПЛАВА АКТИВНОЙ ЗОНЫ ЯДЕРНОГО РЕАКТОРА (ВАРИАНТЫ)

Изобретение относится к составам материалов для атомной энергетики и предназначено для обеспечения локализации расплава активной зоны корпусных водоохлаждаемых реакторов (кориума) при запроектной аварии с выходом расплава из корпуса. Жертвенный керамический материал для ловушки расплава активной зоны ядерного реактора включает основной состав из оксида железа Fe2О3 или смеси оксида железа Fe2О3 и 10-33 мас.% оксида алюминия Al2O3 и добавки оксида металла с общей формулой МеО, выбранного из ряда: CuO, NiO, СоО, или оксида марганца MnO2, и замедлителя нейтронов - оксида гадолиния Gd2О3при следующем соотношении ингредиентов, мас.%: 1) Fe2О3 60-95, МеО 5-40 или MnO210-40, Gd2O3 0, 1-0,2 сверх 100 % или 2) Fe2О3 47-85, Al2О3 10-33, МеО 6-20 или MnO2 7,5-17, Gd2О3 0,1-0,2 сверх 100 %. Технический результат изобретения - получение керамического материала, который одинаково активно окисляет все металлические компоненты кориума (цирконий, хром, железо) и неограниченно смешивается в жидком состоянии ...

РАСКЛИНИВАЮЩИЕ НАПОЛНИТЕЛИ И СПОСОБЫ ИХ ПОЛУЧЕНИЯ

Изобретение относится к гидравлическому разрыву пласта с использованием расклинивающих наполнителей. Технический результат - уменьшение удельной массы расклинивающего наполнителя, облегчение транспортирования в жидкости для гидроразрыва пласта, более глубокое введение в трещину до осаждения. Расклинивающий наполнитель включает в себя изготовленную из предшественников керамики - алюмосиликатов, содержащих геополимеры, порошковую золь-гель-керамику, имеющую округлость и прочность на сжатие, подходящие для использования в качестве расклинивающего наполнителя. Способ получения расклинивающего наполнителя включает в себя следующие операции: формирование золь-гель-композиции смешиванием предшественников керамики - алюмосиликата и водного раствора силиката щелочного металла; формование гранул и сглаживание их поверхности в грануляторе; их отверждение с получением золь-гель-керамики в виде частицы, имеющей округлость и прочность на сжатие, подходящие для использования в качестве расклинивающего ...

ЛЁТОЧНАЯ МАССА

Изобретение относится к монолитным огнеупорам, а именно к леточным массам, используемым для закрытия леток доменных печей после выпуска чугуна и шлака. Техническим результатом изобретения является повышение прочности леточной массы. Леточная масса включает огнеупорный компонент, состоящий из оксидных и углеродсодержащих материалов и карбида кремния, и связующий компонент, состоящий из огнеупорной глины и пластификатора. При этом огнеупорный компонент дополнительно содержит композиционный материал на основе нитрида кремния с ферросилицидной связкой, включающей силициды железа, кремний и/или железо, при следующем соотношении компонентов, мас.%: нитрид кремния 60,0-95,0; силициды железа 0,1-38,0; кремний 0,1-23,0; железо 0,1-8,0, а компоненты леточной массы находятся в следующем соотношении, мас.%: огнеупорный компонент 50-80; связующий компонент 20-50. 1 з.п. ф-лы, 1 табл.

СПОСОБ ФОРМИРОВАНИЯ СОСТАВА ТВЕРДЫХ РАСТВОРОВ ДЛЯ ИЗДЕЛИЙ ВЫСОКОЧАСТОТНОЙ И МИКРОВОЛНОВОЙ ТЕХНИКИ (ВАРИАНТЫ)

Изобретение относится к производству материалов для электронной техники и может быть использовано в технологии производства изделий микроволновой и СВЧ-техники. В основу настоящего изобретения положено решение задачи формирования состава твердых растворов системы Х LnMO3 - (1-Х)CaTiO3, где Ln - La, Nd; М - Al, Ga, с параметрами, пригодными для создания широкой гаммы получаемых на их основе изделий, преимущественно СВЧ-техники, а именно с высокой диэлектрической проницаемостью при значении температурного коэффициента τf, близком к нулю, при сохранении высокого показателя Q x f. Способ реализуют методом твердофазного синтеза или химическим соосаждение компонентов с последующей прокалкой осадка. Предложенным способом получают диэлектрики с ε от 43 до 48 с близкой к нулю τf. Совокупность полученных характеристик определяет широкую перспективу применения этих материалов в изделиях микроволновой техники при использовании обычной керамической технологии синтеза исходных порошков. 4 с.п.ф-лы, 1 ...

КОТАЛИТИЧЕСКИЙ ЭЛЕМЕНТ ДЛЯ КОНВЕРСИИ АММИАКА

Изобретение относится к сотовым каталитическим элементам для конверсии аммиака и может быть использовано в производствах азотной, синильной кислот, гидроксиламинсульфата в качестве катализатора второй ступени. Сущность изобретения заключается в том, что каталитический элемент выполнен в виде слоя из отдельных призм, соединенных боковыми гранями без зазоров, имеющий сотовые каналы. Новым является то, что диаметр основания призмы и ее высота составляют соответственно 4 - 100 и 2 - 75 эквивалентных диаметров сотового канала. Дополнительные отличия заключаются в том, что основание призмы имеет форму трех-, или четырех-, или шестиугольника, а также в том, что элемент выполнен из материала состава, %: Fe2O3 92; Cr2O3 8 или Fe2O3 89, 5; ZrO2 5; MgO 5; ZrBaO 0,5 или Fe2O3 79; Al2O3 20; MgO 1 или Fe2O3 79,7; Al2O3 20; V2 O5 0,3 или перовскит (СаO•1LaO•9MnO3) 90; Al2O3 8; SiO2 2. Технический результат состоит в увеличении термической прочности и срока службы катализатора. 2 з.п.ф-лы, 8 ил.

Смешанная режущая керамика и способ изготовления режущей пластины из смешанной режущей керамики

Изобретение относится к порошковой металлургии, в частности к изготовлению режущих пластин из смешанной керамики. Может использоваться для оснащения режущего инструмента для обработки труднообрабатываемых сталей и сплавов, а также высокопрочных и серых чугунов на металлообрабатывающих станках. Смешанная режущая керамика содержит, мас. %: оксид алюминия 27-30, оксид кремния SiО2 27-31, карбид тантала TaC 9-10, карбид титана TiC 23-24, карбид вольфрама WC 9-10. Смесь оксида кремния и оксида алюминия прокаливают при температуре 1750-1760°С, подвергают тонкому виброизмельчению на виброустановке в течение 3,5-4,5 ч и сушат. После сушки вводят карбид титана, карбид тантала, карбид вольфрама и осуществляют смешивание до их равномерного распределения по объему и образования водной суспензии, в которую вводят раскисляющие добавки катализаторов в виде оксида магния МgO, оксида кальция СаО, оксида натрия Nа2O, и подвергают распылительной сушке с получением смеси. Полученную смесь прессуют с формированием ...

КЛАДОЧНЫЙ РАСТВОР ДЛЯ ФУТЕРОВКИ ВЫСОКОТЕМПЕРАТУРНЫХ АГРЕГАТОВ

Изобретение относится к огнеупорной промышленности и может быть использовано в качестве кладочного раствора при футеровке тепловых агрегатов, работающих в интервале температур 900-2200oC. В основу изобретения положена задача разработать раствор для футеровки высокотемпературных агрегатов повышенной огнеупорности и высокой прочности. Сущность изобретения: кладочный раствор для футеровки высокотемпературных агрегатов, включающий алюминий, хромитовый концентрат и сульфат магния, дополнительно содержит технический глинозем и оксид магния при следующем соотношении компонентов, мас.%: алюминий 11-16, хромитовый концентрат 6-16, сульфат магния 12-18, технический глинозем 10-20, оксид магния 41-50. 1 табл.

СПОСОБ ПОЛУЧЕНИЯ ПОРИСТОЙ БИОАКТИВНОЙ КЕРАМИКИ НА ОСНОВЕ ОКСИДА ЦИРКОНИЯ

Изобретение относится к медицине, в частности к травматологии, ортопедии, регенеративной медицине, стоматологии и челюстно-лицевой хирургии, и может быть использовано для восстановления структуры и функции костной ткани. Диоксид циркония смешивают с химически стойким стеклом марки ХС-2 №29 и оксидом магния, который используют в качестве стабилизирующего компонента, препятствующего переходу диоксида циркония из тетрагональной структуры в моноклинную при нагревании. Затем добавляют смесь аммония фосфорнокислого 2-х замещенного (NH)HPOи кальция углекислого CaCO. При этом исходная смесь содержит компоненты в следующем соотношении, мас. %: 72-73 ZrO, 4-5 MgO, 6-8 (NH)HPO, 7-9 CaCOи 8-8,5 стекло марки ХС-2 №29. Смесь истирают на вибромельнице, после чего 90% частиц имеют размер менее 50 мкм, далее прессуют в пресс-форме под давлением 100 МПа/сми прокаливают в муфельной печи при температуре 1300°С. В результате получают пористую биоактивную керамику на основе оксида циркония, в которой поры выстланы ...

СПОСОБ ПОЛУЧЕНИЯ ПОЛИКРИСТАЛЛИЧЕСКИХ СЦИНТИЛЛЯЦИОННЫХ МАТЕРИАЛОВ В ФОРМЕ ПОРОШКОВ

Изобретение относится к технологии получения поликристаллических сцинтилляционных материалов, применяемых в различных областях науки и техники, важнейшими из которых являются: медицинские и промышленные томографы, системы таможенного контроля и контроля распространения радиоактивных материалов, приборы дозиметрического контроля, различные детекторы для научных исследований, применяемые в физике высоких энергий и астрофизике, оборудование для геофизических исследований для нефте- и газоразведки. Способ получения сцинтилляционного порошка состава (Gd,Y)(Ga,Al)O:Ce включает приготовление водных растворов солей исходных компонентов - Gd, Y, Се, Ga, Al - с заданными концентрациями, смешение этих растворов в количестве, обеспечивающем требуемый состав компонентов в смесевом растворе, приготовление раствора щелочного осадителя, приливание смесевого раствора исходных компонентов в раствор щелочного осадителя, термообработку полученной реакционной смеси путем медленного упаривания при температуре ...

Способ получения нанокристаллических порошков оксида гадолиния, допированного редкоземельными элементами

Изобретение относится к области нанотехнологий и наноматериалов и может быть использовано в оптоэлектронике при изготовлении прозрачной лазерной керамики и люминофоров. Сначала готовят раствор, содержащий соли гадолиния и допирующих редкоземельных элементов, при их суммарной концентрации 0,005÷0,05 моль/л. Затем добавляют раствор лимонной кислоты концентрацией 2 М и поливинилпирролидон. Объём раствора лимонной кислоты определяют из соотношения 50 мл на 5 г синтезируемого нанокристаллического порошка. Массу поливинилпирролидона рассчитывают из соотношения 10 г на 5 г синтезируемого нанокристаллического порошка. Полученную смесь перемешивают с помощью магнитной мешалки с подогревом и высушивают при температуре не более 150°C до получения однородного геля, который термообрабатывают при температуре не менее 600°C в течение 2 ч. Полученный нанокристаллический порошок оксида гадолиния, допированного редкоземельными элементами, обладает высокой термической и химической стойкостью, морфологической ...

НАБИВНАЯ ПАСТА ВЫСОКОЙ НАБУХАЮЩЕЙ СПОСОБНОСТИ ДЛЯ ЭЛЕКТРОЛИЗЕРА АЛЮМИНИЯ

... 1. Холоднонабивная паста высокой набухающей способности для применения в соединительных элементах электролитических ячеек получения алюминия электролизом глинозема, включающая смесь пека, легкого масла и углеродистого наполнителя, где указанный наполнитель содержит антрацит и измельченные анодные огарки или обожженный нефтяной кокс, где измельченные анодные огарки или обожженный нефтяной кокс составляют до 20 мас.% от общей массы наполнителя. 2. Холоднонабивная паста высокой набухающей способности по п.1, отличающаяся тем, что измельченные анодные огарки или обожженный нефтяной кокс составляют примерно от 15 до 20 мас.% от общей массы наполнителя. 3. Холоднонабивная паста высокой набухающей способности по п.1, отличающаяся тем, что содержит от 10 до 15 мас.% указанного пека. 4. Холоднонабивная паста высокой набухающей способности по п.1, отличающаяся тем, что содержит примерно от 5 до 10 мас.% указанного легкого масла. 5. Холоднонабивная паста высокой набухающей способности по п.4, отличающаяся ...

СПОСОБ ПОЛУЧЕНИЯ ОКСИДНЫХ ВЫСОКООГНЕУПОРНЫХ МАТЕРИАЛОВ

Способ получения оксидных высокоогнеупорных материалов, включающий смешение исходных компонентов в состав которых входит термитная добавка, зажигание и термообработку шихты, охлаждение и измельчение, отличающийся тем, что в качестве термитной добавки используют элемент оксида основного компонента из расчета достижения температуры плавления конечного материала, а термообработку ведут при продувании слоя шихты окислителем, например в аглочашах.

СОВОКУПНОСТЬ КЕРАМИЧЕСКИХ ЧАСТИЦ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ (ВАРИАНТЫ)

... 1. Совокупность керамических частиц, содержащая:множество отдельных сыпучих керамических частиц, причем указанное множество частиц имеет полную массу и гранулометрический состав частиц, включающий размеры частиц dи d, гранулометрический состав имеет эффективную ширину, которая является разностью между размерами частиц dи dгранулометрического состава, причем указанная эффективная ширина гранулометрического состава превышает 100 микронов и содержит три прилегающие и неперекрывающиеся области, включая первую область, вторую область и третью область, где первая область прилегает ко второй области, а вторая область прилегает к третьей области; и где ширина указанной второй области составляет по меньшей мере 25% эффективной ширины; игде масса частиц во второй области не превышает 15% полной массы множества частиц, а масса частиц в первой области и третьей области каждая превышает массу частиц во второй области.2. Совокупность по п.1, у которой отношение d:dпревышает 0,22.3. Совокупность по п.1 ...

Высокоэнтропийная оксидная керамика на основе медно-марганцевой шпинели для электропроводящих материалов и способ получения порошков из неё

Оксидная керамика на основе медно-марганцевой шпинели и способ получения керамических порошков предназначены для создания материалов с высокой электропроводностью в среднем диапазоне температур 300-800°С, которые могут быть использованы в качестве материала для токосъема в твердооксидных топливных элементах, в качестве электродов с рабочей температурой в указанном диапазоне, в качестве катализаторов, тонких пленок и покрытий, а также как компонент композитов, включая керметы. Создание высокоэнтропийной керамики на основе CuMn2O4 путем направленного легирования основными и минорными допантами увеличивает диапазон устойчивости кубической фазы шпинели, ингибирует процесс зародышеобразования других фаз, снижает темпы деградации с улучшением проводящих свойств. В качестве основных допантов керамика содержит Li+ и Ni2+ в количестве 0,05-0,3, а в качестве минорных допантов - Zn2+, Mg2+ и Cr3+, Sc3+, Al3+ в количестве 0-0,15 для заполнения тетра- и окта-позиции кристаллической структуры шпинели ...

КЕРАМИЧЕСКИЕ ЧАСТИЦЫ И СПОСОБ ИХ ПОЛУЧЕНИЯ

СОДЕРЖАЩЕЕ ГРАФИТ ОГНЕСТОЙКОЕ ИЗДЕЛИЕ, СПОСОБ ЕГО ПОЛУЧЕНИЯ И ЕГО ПРИМЕНЕНИЯ

КОМПОЗИТЫ С РЕГУЛИРУЕМЫМ ВЫСВОБОЖДЕНИЕМ РЕАГЕНТОВ ДЛЯ ОБРАБОТКИ СКВАЖИН

... 1. Композит для обработки скважин, содержащий реагент для обработки скважин и обожженный пористый оксид металла, в котором пористость и проницаемость обожженного пористого оксида металла является такой, что реагент для обработки скважин адсорбируется во внутрипоровых пространствах пористого оксида металла, и в котором, кроме того:(a) площадь поверхности обожженного пористого оксида металла составляет от приблизительно 1 м/г до приблизительно 10 м/г;(b) диаметр частиц обожженного пористого оксида металла составляет от приблизительно 0,1 до приблизительно 3 мм; и(c) объем пор обожженного пористого оксида металла составляет от приблизительно 0,01 до приблизительно 0,10 г/см.2. Композит для обработки скважин по п. 1, который содержит от приблизительно 1 до приблизительно 50 мас.% реагента для обработки скважин.3. Композит для обработки скважин по п. 1, в котором адсорбент дополнительно содержит диоксид кремния.4. Композит для обработки скважин по п. 1, в котором реагент для обработки скважин ...

СПОСОБ ПОЛУЧЕНИЯ КОМПЛЕКСА "ЗОЛЬ-ГЕЛЬ" ПО МЕНЬШЕЙ МЕРЕ ИЗ ТРЕХ СОЛЕЙ МЕТАЛЛОВ И ПРИМЕНЕНИЕ СПОСОБА ДЛЯ ПОЛУЧЕНИЯ КЕРАМИЧЕСКОЙ МЕМБРАНЫ

... 1. Способ получения комплекса "золь-гель" по меньшей мере из трех солей металлов M1, М2, и М3, приемлемых и предназначенных для получения материала типа перовскита, соответствующего общей формуле (I):где:х, у, u и δ являются такими, что сохраняется электронейтральность кристаллической сети;0≤х≤0,9;0≤u≤0,5;(у+u)≤0,5;0≤y≤0,5 и 0<δ;при этом в формуле (I):- А означает атом, выбранный из атомов скандия, иттрия или из группы лантанидов, актинидов или щелочно-земельных металлов;- А′, отличающийся от А, означает атом, выбранный из атомов скандия, иттрия, алюминия, галлия, индия, таллия или из группы лантанидов, актинидов или щелочно-земельных металлов;- В означает атом, выбранный из атомов переходных металлов;- В′, отличающийся от В, означает атом, выбранный из атомов переходных металлов, металлов из группы щелочно-земельных металлов, алюминия, индия, галлия, германия, сурьмы, висмута, олова или свинца;- В″, отличающийся от В и В′, означает атом, выбранный из атомов переходных металлов, металлов ...

ПРОЗРАЧНЫЙ КЕРАМИЧЕСКИЙ СЦИНТИЛЛЯЦИОННЫЙ ДЕТЕКТОР СО СТРУКТУРОЙ ГРАНАТА ДЛЯ ПОЗИТРОННО-ЭМИССИОННОЙ ТОМОГРАФИИ

Изобретение может быть использовано при изготовлении систем обнаружения излучения для компьютерной томографии (КТ), позитронно-эмиссионной томографии (ПЭТ) или однофотонной эмиссионной компьютерной томографии (ОФЭМТ). Сначала формируют порошок, содержащий композицию с формулой: (Gd3-a-cYa)x(Ga5-bAlb)yO12DcB, где D - активирующая легирующая добавка, которую выбирают из Tl+, Cu+, Ag+, Au+, Pb2+, Bi3+, In+, Sn2+, Sb3+, Ce4+, Eu2+, Yb2+, Nb5+, Ta5+, W6+ и их комбинаций; В - гетеровалентная легирующая добавка, выбранная из Mg2+, Са2+, Sr2+, Ва2+, В3+ и их комбинаций; а около 0,05-2; b около 1-3; х около 2,8-3,2; у около 4,8-5,2; с около 0,003-0,3. Порошок может быть сформирован пламенно-аэрозольным пиролизом жидких материалов-предшественников, синтезом в процессе горения, осаждением частиц из одного или более жидких растворов путем изменения рН или синтезом на основе золь-гелевой технологии. Оптически прозрачную керамику формируют объединением порошка в окислительной атмосфере для уменьшения ...

Пьезокерамический материал

Сегнетоэлектрический керамический материал

Изобретение относится к электротехнике , в частности к сегнето- электрической керамике для электротехнических устройств. Цель изобретения - снижение температуры Кюри и увеличение диэлектрической проницаемости . Цель достигается за счет введения в материал, содержащий, мол.%. СаО 72,68-74,62; 25,13- 25,77; Ей,О, 0,25-1,55. Материал обладае т следующими свойствами: tge: 8,2-9,0-10-, лТ 1250-1025 С; б (5,6-2,2) -10- Ом- , см- . 1 табл.

Пьезокерамический материал

BASISCHE FEUERFESTE ZUBEREITUNG.

Fluessige Bindermasse

Oxidpulver, Sinterkörper, Verfahren zu dessen Herstellung und daraus zusammengesetztes Target

Verfahren zur Herstellung ungebrannter, basischer, feuerfester Steine

Basic refractory ceramic hollow body for metallurgical applications especially as an immersion pouring nozzle etc.

A basic refractory ceramic hollow body, made from a single magnesium oxide and carbon based material and having a specified open porosity with a constant pore size distribution, is new. A basic refractory ceramic hollow body, for metallurgical applications, consists of a monolithic body made of a single material based on a batch of 10-40 wt. % carbon, 50-89 wt. % MgO and 1-35 wt. % other components and has an open porosity of 5-20 vol. % with a constant content of pores in the 0.1-15 microns range. Preferred Features: The MgO may be partially or completely replaced by dolomite.

Schieberverschluss fuer fluessige Metallschmelze enthaltende Behaelter

KUNSTHARZGEBUNDENES FEUERFESTES VERSCHLEISSTEIL

NTC-Masse, Thermistor und Verfahren zur Herstellung des Thermistors

NTC-Masse für die Herstellung eines Thermistors, die als Hauptbestanteil eine Verbindung aus dem Mn-Ni-O System enthält, die eine allgemeine Zusammensetzung von NiMnOaufweist,wobei y dem molaren Ni-Anteil am Gesamtmetallgehalt der Verbindung aus dem Mn-Ni-O System, definiert als c(Ni):(c(Ni) + c(Mn), entspricht und es gilt:0,500 < x < 0,6100,197 < y < 0.240.

A CARBON-CONTAINING REFRACTORY

Isolierkoerper oder -schicht fuer mittelbar zu heizende Kathoden von elektrischen Entladungsgefaessen

Futter fuer Aluminiumschmelzoefen

Multimetal oxide composition, useful as oxidation catalyst, especially for gas phase production of (meth)acrylic acid, comprises crystallites of constant composition

Multimetal oxide composition is a multimetal oxide (I) of molybdenum with vanadium, niobium, tantalum, tungsten and/or rhenium and boron, silicon, phosphorus, germanium, arsenic and/or antimony and optionally other metal(s) in the form of crystallites of constant composition. Multimetal oxide composition is of formula (I); (A)p(B)q (I) Mo12X<1>aX<2>bX<3>cX<4>dX<5>eOx (II) MofX<6>gX<7>hOy (III) A = a multimetal oxide of formula (II); B = a multimetal oxide of formula (III); X<1> = hydrogen, up to 97 mole-% of which may be replaced by ammonium, potassium, rubidium and/or cesium; X<2> = vanadium, niobium (Nb), tantalum (Ta), tungsten and/or rhenium; X<3> = boron, silicon, phosphorus, germanium, arsenic and/or antimony (Sb); X<4> = chromium, manganese, iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), magnesium (Mg), calcium (Ca), strontium (Sr) and/or barium (Ba); X<5> = sulfur; X<6> = Cu, Fe, Co, Ni, Zn, cadmium, Mn, Mg, Ca, Sr and/or Ba; X<7> = Nb, Ta and/or Sb; a = 1-3; b = 0.1 ...

Gegossenes feuerfestes Erzeugnis

Verfahren zur Herstellung Kohlenstoff enthaltender feuerfester Materialien

Optisches Material und Verfahren zu dessen Herstellung

Verfahren zur Herstellung von feuerfesten kohlenstoffgebundenen Steinen auf Basis von Magnesiumoxid

Moertelgemisch

Neuartige Bindemasse und deren Verwendung

VERFAHREN ZUM HERSTELLEN FEUERFESTER FORMKOERPER AUF KORUNDBASIS

Improvements in the manufacture of synthetic mineral products

... 520,889. Agglomerating mineral substances; artificial stone. DITERICHS, W. Oct. 28, 1938, No. 31233. Convention date, Oct. 30, 1937. [Classes 22 and 70] Granular crystalline mineral substances are agglomerated by a binder which yields on firing crystals which are identical, isomorphous or compatible with the crystals of the substance being agglomerated. The granular substances may be abrasives such as emery, corundum or other forms of alumina, silicon, horon or other carbides or nitrides, bauxite, magnesite, chromite, zirconia, iron or chromium oxides, or oxides of beryllium, molybdenum, tungsten titanium, vanadium or thorium, or natural or artificial silicates. The binder consists of silica gel or other mineral gel with water and metallic oxides or salts. In an example, a product consisting of granular rhombohedral alumina agglomerated by crystalline rhombohedral magnesium tourmaline is prepared by mixing a solution containing magnesium chloride, aluminium hydrate mixed with phosphoric ...

NON-AQUEOUS REFRACTORY RAMMING MIXES

... 1340287 Refractory ramming mixes DRESSER INDUSTRIES Inc 6 June 1972 [9 July 1971] 26354/72 Heading C1J A non-aqueous refractory ramming mix comprises a particulate basic refractory material and from 2 to 12 wt. per cent of a lubricating oil and a metallic stearate. The refractory material may be dead-burnt magnesite or dead-burnt dolomite and the metallic stearate magnesium, aluminium, calcium, sodium or zinc stearate. Burnt lime or chrome ore may be added. In the example mixes comprising (i) magnesite, non- detergent motor oil and magnesium stearate and (ii) dolomite, magnesite, carbon black, non- detergent motor oil and magnesium stearate are described.

Improvements in or relating to method of manufacturing refractories

... 514,125. Refractory compositions. OESTERREICHISCH AMERIKANISCHE MAGNESIT AKT.-GES. April 27, 1938, No. 12636. Convention date, April 28, 1937. Drawings to Specification. [Class 22] Chromite-magnesia refractory bricks are made from a mixture of 50-80 per cent. of ground chromite material from which the finest fraction, comprising grain sizes up to 0.1 mm. at least, but stopping short of 0.5 mm., has been removed, and 50-20 per cent. of finely sub-divided magnesia. The chromite may be pre-burned or not, and fused magnesia, or dead-burned magnesite may be used. The mixture is moulded after the addition of water and, if desired, a binder such as sulphite waste liquor, molasses, dextrine, waterglass, or magnesium sulphate. Baked, or non-baked, coldset bricks may be produced. Specifications 409,130 and 435,448, U.S.A. Specification 2,053,146, and French Specification 800,522 arereferred to. The Specification as open to inspection under Sect. 91 describes also the removal from the ground chromite ...

PLASTIC CONCRETE MIXES

... 1,274,326. Coating. INSTITUT NEFTEKHIMICHESKOI I GAZOVOI PROMYSHLENNOSTI IMENI I.M. GUBKINA. 11 Dec., 1969, No. 60506/69. Heading B2E. [Also in Divisions C3, D1 and D2] Substrates such as wood, metal and stone may be coated with paints and varnish comprising (1) an organic resin, (2) a compatible plasticiser which is a mixture of an aromatic hydrocarbon extract from a petroleum residue with a component selected from petrolatum, ceresin, deasphaltizates and petroleum residue distillates, and (3) organic solvents. The resin may be a petroleum resin or coumarone/indene resin. In Example (7) wood, metal and stone are painted with compositions comprising petroleum resin, aromatic hydrocarbon extract, distillate from the vacuum distillation of oil tar, chalk, talc, zinc oxide, chromium oxide pigment, ethyl acetate, acetone and toluene.

High temperature castable refractories

... 667,969. Chrome - alumina refractory. MORGAN CRUCIBLE CO., Ltd. (Babcock & Wilcox Co. of America). May 6, 1949. No. 12196/49. Class 22. A refractory comprising chrome ore, corundum of a corundum forming material, and a pure calcium aluminate cement. Plastic fire clay may also be present, the refractories having the following range of composition. Chrome ore 50-90 per cent, corundum material 5-25 per cent, calcium aluminate cement 5-20 per cent. plastic fire or ball clay 0-5 per cent. Ingredients are mixed dry and water, e.g. 10-15 per cent by weight, added to give the required consistency. The cement may be 3 Cao, 5 Al 2 O 3 or 5 Cao, 3 Al 2 O 3 .

ELECTRICALLY CONDUCTIVE REFRACTORY OXIDES AND METHODS OF PREPARING SAME

... 1386514 Conductive refractories BROKEN HILL PTY CO Ltd 9 May 1972 [31 May 1971] 21626/72 Heading C1J An electrically conductive refractory R.E. being one or more of yttrium or a rare earth excepting Ce; A being one or more of Ca, Ba or Sr and y is 0À04-0À40, is prepared by milling together the appropriate oxides or their precursors, prefiring at 1400-1600‹ C. in a reducing atmosphere, milling the product, shaping and finally firing at less than 1700‹ C. The reducing atmosphere can be 95% N 2 +5% H 2 . Stabilized ZrO 2 or A.E. zirconate can be added before or after prefiring.

Magnesite-chrome refractory

A refractory composition comprises a major amount individually of dead burnt magnesite, added alumina 10-35 per cent. by weight, remainder, but with a minimum of 20 per cent. chrome ore. Preferred proportions of magnesite are 45-70 per cent. and of chrome ore 20-40 per cent. Part of both alumina and magnesite is finely divided. Magnesite is defined as material giving magnesia at high temperatures and includes magnesite rock and magnesium hydroxide. Chrome ore. containing up to 26 per cent. iron oxide and magnesite containing up to 5 per cent. lime may be used. Lignin waste liquor magnesium sulphate, resins, bitumen or oxychloride cements may be used as temporary bonds and ball clay added to aid pressing. Sodium silicate may be included as an additional bond. Magnesium silicates may also be present, and also mineralizers, e.g. fluorides, borates or phosphates.

Magnesite-chrome refractory bricks

Magnesite-chrome refractory bricks are made by shaping and firing a mixture of a magnesite refractory passing a 72 mesh sieve (BS) and crushed bricks and pellets of a mixture of chrome ore and magnesia, the latter forming at least 50% by weight of this mixture, which has been pre-fired at 1580-1680 DEG C. Preferably a chrome refractory material is included in the mixture of magnesite and crushed pre-fired bricks in amount of at least 15% and contaniing less than 5% SiO2. Preferably the overall magnesia content of the bricks is not more than 75% by weight.

Refractory composition

Pitch-bonded basic refractories are produced by impregnating basic refractory grains having an open porosity of 25-50% with carbon or a carbonaceous residue, intimately mixing said impregnated grains with bonding pitch, and shaping the mixture. The refractory grains may be calcined dolomite, alumina, silicon carbide, forsterite or mullite but preferably contain at least 95% by weight MgO and not more than 40% SiO2, and may have pores of effective diameter 5-100 microns. The pores may be impregnated with a carbonaceous liquid such as liquid pitch or tar which is subsequently carbonized by heating or converted to a polymerized residue by air-blowing and heating, or they may be impregnated by deposition of carbon from a hydrocarbon gas at a cracking temperature. An amount of 8-11% bonding pitch with a softening point of 65-150 DEG C. may be used, and a minor amount, e.g. 40%, refractory fines of - 200 mesh (U.S. sieve) may be added to the refractory grains. The total carbon content of the ...

Refractory substances are made by mixing chromium ore with a magnesium compound, e.g. magnesite, which has been melted or sintered at a temperature of about 1500 DEG C. or more, and firing the mixture. The chromium ore employed preferably contains more than 30 per cent of chromium oxide and the finished product between 10 and 80 per cent. Organic binders and other ingredients may be added.

IMPROVEMENTS IN OR RELATING TO ZIRCONIUM CORUNDUM

... 1,209,515. Zirconium corundum. DYNAMIT NOBEL A.G. 4 Sept., 1968 [5 Sept., 1967], No. 42098/68. Heading C1J. A substantially eutectic mixture of zirconium dioxide and of bauxite having a silicon dioxide content of not more than 5 wt. per cent is shaped and sintered either in a reducing atmosphere at 1250-1500‹ C. or in an oxidizing atmosphere at 1400-1600‹ C. At least 70% of the zirconium dioxide and at least 70% of the aluminium oxide have grain sizes below 5 Á and the mixture contains 56 to 60 parts by weight of aluminium oxide per 44 to 40 parts of zirconium dioxide. The mixture can also contain 4-5% CaO, 6-7% MgO or 8-9% YtO 2 , based upon the weight of zirconium dioxide plus the weight of aluminium oxide, as a stabilizer, and organic binders. The shapes made are bricks which are crushed to provide abrasive granules, pebble shapes suitable for blasting and grinding balls, and extruded shapes, such as tubes, thread guides and drawing dies for wires.

Improvements in magnetic cores

... 685,065. Magnetic compositions. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 2, 1050 [Feb. 5, 1949], No. 2744/50. Class 38 (ii). A ferromagnetic core comprises manganese oxides associated with the oxides of other bivalent and trivalent metals in the form of mixed crystals having a crystalline structure similar to that of the mineral perovskite. To form a core of lanthanum and strontium manganites, suitable proportions of lanthanum, strontium and manganese carbonates are heated in air at 900-1000‹ C. for several hours, cooled, ground, moulded to the desired shape, and sintered in air at 1370-1450‹ C. for three hours. In some cases an atmosphere of oxygen is desirable. Lanthanum barium manganite. lanthanum strontium manganite with the addition of either lanthanum aluminite or lanthanum ferrite, lanthanum strontium barium manganite, and lanthanum lead manganite are described as made in a similar manner. Other substances which may be incorporated in the core material are the manganites of yttrium ...

Refractory materials and the use and production thereof

An oxide of the formula CrO.Cr2O3 is prepared by heating, at above 1,700 DEG C. in an oxidizing atmosphere, a mixture of chromium and chromic oxide in the presence of not more than 5 per cent. of a flux of alkali or alkaline earth metal salt, which may itself supply the oxidizing atmosphere, e.g. a nitrate, chromate or chlorate. The chromium starting material may contain carbon which is burned out, leaving a porous product.ALSO:A sintered refractory material consists essentially of the oxide CrO. Cr2O3 alone or admixed with an oxide of iron. It is prepared by heating at above 1700 DEG C. in an oxidizing atmosphere a mixture of either crushed chromium and chromic oxide, or a mixture of ferrochrome and chromite, in the presence of not more than 5 per cent of a flux of an alkali metal or alkaline earth metal salt. The salt can itself provide the required oxidizing atmosphere, e.g. a nitrate, chromate or chlorate. The chromium or ferrochrome can contain carbon which is oxidized leaving a porous ...

The Manufacture of Refractory Bricks

... 1,163,282. Refractory bricks. SOC. D'ETUDES ET DE RECHERCHES SCIENTIFIQUES ET MINIERES. 7 Sept., 1966 [8 Sept., 1965], No. 40062/66. Heading B5A. Refractory bricks, e.g. for use in a furnace, are produced by de-aerating and moulding a mixture of refractory, e.g. dead burnt, ground magnesia and/or dolomite, with a hydrocarbon binder consisting of coal or petroleum distillates, e.g. tar or pitch, de-aerating being effected by vibrations, tamping, pounding or strokes from a low pressure press, cooling the moulded brick until it is externally solid, transferring it to a container which maintains the shape of the brick while still deformable and further cooling the brick until solid throughout. The mould walls may be provided with cooling means. The container may be an assembly of two rigid sheets applied against opposite faces of the brick. Moulding is effected at a temperature at which the mixture is sufficiently fluid to be moulded, e.g. at least initially 80-300‹ C. The mixture is preferably ...

CARBON-CONTAINING REFRACTORIES

The refractories include 2 to 15 wt.% metal fibers obtained by chatter-vibration cutting, the fibers having a length of 2 to 10 mm and a diameter of 0.03 to 0.2 mm. The refractories may be composite refractory structures such as long nozzles, immersion nozzles, upper and lower nozzles of sliding nozzle devices in continuous casting, plates of sliding nozzle devices, and nozzles for steel making converter tuyeres. The addition of the metal fibers leads to firm integration of the interface of different refractory materials in the structures, resulting in improved spalling resistance.

Refractory cement castable containing particulate pitch

A refractory castable is used as linings, nozzles, containers and other structures in order to contain and guide molten materials such as steel during processing. The refractory castable comprises a refractory cement and up to 50% by weight of particulate pitch, preferably 10 to 20% pitch. Preferably the pitch has a melting point in excess of 180{C. The castable may also incorporate up to 5% reinforcement fibres, such as carbon, viscose, polypropylene or polyvinyl chloride fibres. The castable is formed by mixing the refractory cement, particulate pitch and water to from a slurry, moulding, allowing the shape to dry and then firing at an appropriate temperature to develop carbon bonding. The refractory cement castables has an extended operational life due to improved resistance to shock and corrosion.

Complex oxide having p-Type thermoelectric characteristics

Complex oxide having p-type thermoelectric characteristics

The present invention provides a novel complex oxide capable of achieving high performance as a p-type thermoelectric material. The complex oxide comprises a layer-structured oxide represented by the formula BiaPbbM<1>cCodM<2>eOf wherein M<1> is one or more elements selected from the group consisting of Na, K, Li, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Pb, Ca, Sr, Ba, Al, Y, and lanthanoids; M<2> is one or more elements selected from the group consisting of Ti, V, Cr, Mn, Fe, Ni, Cu, Mo, W, Nb, Ta, and Ag; 1.8 & a & 2.5; 0 & b & 0.5; 1.8 & c & 2.5; 1.6 & d & 2.5; 0 & e & 0.5; and 8 & f & 10; and at least one interlayer component selected from the group consisting of F, Cl, Br, I, HgF2, HgCl2, HgBr2, HgI2, TlF3, TlCl3, TlBr3, TlI3, BiF3, BiCl3, BiBr3, BiI3, PbF2, PbCl2, PbBr2, and PbI2. The interlayer component being present between layers of the layer-structured oxide.

WEAR LINING STRUCTURE OF A CONVERTER

Wear lining structure of a converter

The wear lining structure of a converter is constructed at least in part from unburned carbon-bonded bricks comprising 3-40 weight % carbonaceous material, 1-10 weight % aluminum, and magnesite clinker for the residual part in order to enable the wear lining structure to withstand various severe thermal load conditions imposed on wear lining refractories in the B.O.F. steel making process.

REFRACTORY BRICKS

... 1463297 Refractory bricks IMPERIAL CHEMICAL INDUSTRIES Ltd 18 July 1974 [25 April 1973] 19579/73 Heading C1J A refractory brick is made by mixing a refractory material comprising dolomite or magnesite with a hydrocarbon petroleum fraction of which the melting point is not more than 100‹ C. and of which not more than 5 wt. per cent boils below 200‹ C., the mixing being carried out at a temperature equal to or above the melting point of the fraction, but not more than 100‹ C., and pressing the resultant mixture into a brick. The hydrocarbon fraction may be fuel oil or heavy ends obtained from the bottom of a fractionating column which has been used to fractionally distil olefinic, and/or aromatic hydrocarbon mixtures.

Sintered refractory material

A sintered chrome-magnesite shape comprises 3.6-7.5% ferrous oxide; 4.0-7.0% aluminium oxide; 9.3-15.0% chromic oxide and 50-70% magnesium oxide, the sum of the above oxides being at least 70% and including no more than 11.0% calcium oxide; 8.6% ferric oxide and 8.7% silicon dioxide. The chrome magnesite shape is moulded from a mix containing 30% by weight of less than 10 mesh (Tyler) chrome ore having a cumulative fineness percentage of 7-15% on the 65 mesh screen, 17-24% on the 100 mesh screen, 53-60% on the 200 mesh screen and 70% by weight of less than 4 mesh magnesite having cumulative fineness percentage of 50-60% on the 65 mesh screen, 53-62% on the 100 mesh screen and 65-73% on the 200 mesh screen. 3-5% by weight of a bonding agent, e.g. geulash, dextrin or sodium silicate and 6-7% by weight of water are added to the mix which is moulded and sintered at a temperature of 2750 DEG F.

Refractory

A burned refractory shape is prepared by shaping and burning at above 3000 DEG F. a batch comprising magnesia and chrome ore in a weight ratio of 80 : 20 to 60 : 40, from 50-100% of the chrome ore being -28 Tyler mesh of which fraction 50-100% is +65 mesh, there being more -65 mesh magnesia than -65 mesh chrome ore and no more than 2% silica.

Fused cast refractory

A fused cast refractory comprises, in weight per cent magnesia 56 to 85; alumina 13 to 40; their sum being at least 90; chromic oxide 0.4 to 4.5; ferrous oxide 0 to 3.5; calcium oxide 0 to 3; silica 0 to 3; and boric oxide 0 to 0.5. Specification 724,980 is referred to.

Improvements in or relating to alumino-silicate refractories

A carbonaceous network is uniformly distributed among and surrounding the grains of an alumino-silicate refractory. The product is obtained by firing under reducing conditions clay containing carbonaceous matter and/or to which such matter has been added, e.g. coke.

"Silicon carbide"

Flaky SiC mainly composed of beta -SiC is obtained from sheet material of average thickness 10-100 mu m of an organic silicon polymer containing carbon and silicon atoms as the major skeletal component, by heating the sheet material at 1200-1800 DEG C in a non-oxidative atmosphere, and dividing the sheet material into flakes. Such SiC is especially utilized as the starting material for ceramics having a laminar structure as well as for refractories.

A method for obtaining a boxed refractory brick

A method of preparing a refractory brick boxed within a metal casing comprises forming a mixture of a granular refractory material (preferably a basic refractory material such as magnesite or a mixture of magnesite and chromite) and a chemical bonding agent (such as tar), pouring the mixture into a metal casing and pressing it therein, and then fairing and rectifying the surface of the refractory mix projecting over the edges of the metal casing. The cast brick obtained may then be tempered at a temperature of from 300 to 400 DEG C.

HEAT STORAGE BLOCKS AND MANUFACTURE THEREOF

... 1305862 Refractory aggregate INTERNATIONAL MINERALS & CHEMICAL CORP 19 April 1971 [25 Nov 1970] 24101/71 Heading C1J A dry refractory aggregate for a parting composition comprises (a) at least 45% grog portion of size - 4+50 mesh, (b) 2-10% intermediate portion of - 50+100 mesh, (c) at least 40% of fines fraction of - 100 mesh, (d) 2-6% magnesium salt, e.g. Epsom salt; the percentages being based on the weight of dry aggregate, the mesh sizes being National Bureau of Standard sieve sizes. Components (a), (b) and (c) comprise chrome ore, periclase or mixtures thereof and, in addition, either (1) the grog portion contains at least 40% chromite ore and the fines fraction contains at least 20% periclase (calc. as MgO) or (11) the grog fraction contains at least 25% periclase and the fines fraction contains at least 35% chromite ore. The periclase is of at least 85% MgO content. In addition the aggregate contains ¢-3 wt. per cent bentonite and 0À1-0À5 wt. per cent methylcellulose as plasticizer ...

VOLTAGE DEPENDENT RESISTORS

... 1286134 Ceramic compositions MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 7 Nov 1969 [8 Nov 1968] 54673/69 Heading C1J A voltage dependent resistor comprises as its active element a ceramic body consisting essentially (defined) of ZnO and 0À05-10 mole per cent of MnO, and with a pair of electrodes applied to opposite major surfaces of the body. In addition, the body can contain 0À05-8 mole per cent of BaO, SrO, PbO, UO 2 , CaO or CoO; or 0À05-8 mole per cent Bi 2 O 3 and 0À05-8 mole per cent of SrO, PbO or UO 2 ; or 0À05-8 mole per cent of PbO and 0À05-8 mole per cent of BaO, SrO, CoO or CaO.

Chrome ore-magnesia brick

Direct bonded chrome ore/magnesia bricks are prepared by firing a batch consisting of chrome ore and magnesia which has an SiO2 content such that the fired bricks contain 1.0-2.0% SiO2 and the batch has included therein one or more boron compounds such that the fired bricks contain 0.1-0.26% B2O3. The boron may be added to the unfired batch as a boron acid or salt thereof (examples being given) or an organic boron compound which yields B2O3 upon firing.

MANUFACTURE OF CERAMIC OR CERMET COMPOSITIONS

... 1363414 Granular ceramic or cermet materials ALBRIGHT & WILSON Ltd 27 July 1971 [31 July 1970] 37203/70 Headings C1A C1J and C1N Granular ceramic or cermet material is produced by slurrying at least one powdered ceramic material, optionally in admixture with at least one powdered metal in an aqueous solution of a thermally decomposable water-soluble metal compound other than chromium trioxide and forming the slurry into heat dried granules. In a modification alkali is added to an aqueous solution of a water soluble salt in which the powdered ceramic material has been slurried to precipitate a thermally decomposable hydroxide, basic salt or hydrated oxide, the consequent mixture being formed into heat dried granules. The powdered ceramic material may comprise Ni, Cr, Al, Zr, W, Ti, and/or Mg oxides or carbides. Many inorganic and organic thermally decomposable Ni, Cr, Zr, W, Mg, Ti, Al compounds are listed. In Examples 1-3 slurries of nickel oxide in nickel acetate solution are spray dried ...

Method of lengthening the shelf life of highly refractory tar-impregnated dolomite bricks

... 1,101,228. Refractories. DOLOMITWERKE G.m.b.H. 4 Oct., 1965 [2 Oct., 1964], No. 42008/65. Heading C1J. A porous refractory brick based on magnesite calcium oxide and/or sintered dolomite, is impregnated with tar containing a freelydispersed substance, the mean particle diameter of which is smaller than that of the pores. Specified substances are dolomite, magnesite, limestone, kaolin, talc, graphite, coal and coke dust, silica gel, active alumina and activated carbon, in quantities of 1À20% relative to the tar. The brick can be protected with a coating of tar, pitch, bitumen, asphalt or wax.

Refractory with Periclase-Based Stabilized Solid Solution

METHOD OF MAKING FIRED BASIC REFRACTORY BRICK AND BRICK PRODUCED BY SUCH METHOD

... 1,220,303. Basic refractories. GENERAL REFRACTORIES CO. 23 May, 1969 [29 May, 1968], No. 26575/69. Heading C1J. Fired basic brick is obtained by subjecting a pre-reacted mixture of periclase and chromic ore (in which the periclase is directly sintered to the chrome) Œ up to 35% MgO, to a temperature of 3100-3800‹ F. for at least 5 hours, the temperature rising at no more than 200‹ F./ hour, and cooling to 1000‹ F. at no more than 300‹ F./hour. The periclase is fine-grained, the chrome coarse, preferred sizes being given. Na lignosulphonate is added to form the brick.

REFRACTORY RAMMING MIX CONTAINING ALUMINUM POWDER FOR METAL MELTING FURNACES

CRYSTALLINE COMPOUNDS HAVING DEFORMED PEROVSKITE STRUCTURES WHICH EXHIBIT MAGNETIC OR CONDUCTIVE PROPERTIES

... 1504985 Synthetic deformed perovskite-type compounds AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 25 March 1975 [12 April 1974] 12389/75 Heading C1A A crystalline compound having a deformed perovskite structure is of formula (in which the Cu ions are cupric, have unpaired electrons and occupy square planar sites; A is either a vacant dodecahedral site or a Na+, Ca2+, Cd2+, Sr2+, Ce4+, Pr4+, Y3+, Po4+, a trivalent lanthanide or tetravalent actinide cation occupying such a site; each B is a cation occupying an octahedral site, at least some cations B being In3+, Ni3+, Co3+, Mn3+, Fe3+, Cr3+, Rh3+, Ru3+, Cr4+, Mn4+, Ru4+, Pt4+, Ir4+, Pd4+, Rh4+ or U5+ cations having unpaired electrons. The compounds are either magnetic or electrically conductive. Specified cations A are Na, ...

Improvements in or relating to refractory bodies

An electrode for use in glass melting is produced by sintering a composition comprising tin oxide as a base and 1/2 % to 5% by weight of V2O5. Up to 1% of S62O3 may also be added and sintering is effected at 1300 DEG C.-1500 DEG C. in a non-reducing atmosphere.

Manufacture of refractory elements

A process for the manufacture of ceramic materials, in particular refractory elements, uses a binder, wherein the binder is used as an aqueous emulsion containing 1-4 pbw of water per 1 pbw of the binder. The materials thus obtained show an improved crushing strength while avoiding a harmful working environment. The binder may be a petroleum bitumen having a softening point of at least 80 DEG C, although it may also be e.g. polyethylene, polypropylene or polystyrene. Magnesite may be used as refractory material.

Heterocyclic inhibitors of p38

Heterocyclic inhibitors of P38.

The present invention relates to inhibitors of p38, a mammlian protein kinase involved in cell proliferation, cell death and response to extracellular stimuli. The invention also relates to methods for producing these inhibitors. The invention also provides pharmaceutical compositions comprising the inhibitors of the invention and methods of utilizing those compositions in the treatment and prevention of various disorders.

Heterocyclic inhibitors of p38

VERFAHREN ZUR HERSTELLUNG VON FEUERFESTER MAGNESIA

GALVANISCHE ZELLE

FIREPROOF, FORMED PRODUCTS, LIKE STONES, AND REFRACTORY ONE MIXTURES, PROCEDURES FOR THEIR AGO POSITION AND BONDING AGENT MIXTURE FOR THE BY GUIDANCE OF THIS PROCEDURE

FIREPROOF PRODUCT

FIREPROOF ISOLATIONS SPRAYING MASS

Fireproof Tonerdezement and procedure for the production of the same

CERAMIC MASS FOR THE COAT ON THE FIREPROOF LINING OF METALLURGICAL CONTAINERS

VERFAHREN ZUR HERSTELLUNG KUNSTHARZGEBUNDENER, KOHLENSTOFFHALTIGER FEUERFESTER ERZEUGNISSE

PRODUCTION OF POLLUTION FREE CARBON-BOUND FIREPROOF CERTIFICATIONS IN THE COLD MIXING PROCESS

MATERIAL AS A CHECK OF ORGANISMS AND FOR THE SELECTIVE ADSORPTION OF PROTEINS, CEMENT AND BIOLOGICAL MATERIAL

VERFAHREN ZUR BILDUNG EINER FEUERFESTEN MASSE AUF EINER OBERFLAECHE UND TEILCHENMISCHUNG ZUR BILDUNG EINER SOLCHEN MASSE

FEUERFESTE ISOLIERENDE SPRITZMASSE

Refractory carbon-bonded magnesia brick and process for producing it

The disclosure relates to a process for producing a refractory, ceramically fired, carbon-bonded magnesia brick whose matrix is more than 70% by weight, in particular from 80 to 98% by weight, of MgO grains and also a carbon framework binder matrix resulting from carbonization, and pores, wherein the MgO grains are fixed by means of carbon bonding of the carbon framework and at least 30%, in particular from 50 to 100%, of the MgO grains have at least one sintering bridge resulting from the ceramic firing.

High-temperature-resistant hybrid material made of calcium silicate and carbon

A temperature-resistant ceramic hybrid material has a matrix made of calcium silicate hydrate. Carbon is embedded in the matrix. The carbon is predominantly composed of graphite particles having an ordered graphitic lattice structure and the carbon makes up a weight fraction of up to 40%. The matrix is composed of tobermorite and/or xonotlite and can contain wollastonite rods and/or granular silicate. The size of the graphite particles is 0.01-3 mm. The hybrid material is especially suitable for casting devices for non-ferrous metals.

Led encapsulation resin body, led device, and method for manufacturing led device

An LED encapsulation resin body disclosed in the present application includes: a phosphor; a heat resistance material arranged on, or in the vicinity of, a surface of the phosphor; and a silicone resin in which the phosphor with the heat resistance material arranged thereon is dispersed.

Abrasive Grains Based on Zirconia Alumina

Disclosed herein are abrasive grains based on zirconia alumina melted in an electric arc furnace, comprising a content of 52 to 62 wt % Al 2 0 3 and 35 to 45 wt % ZrO 2 , wherein the high-temperature phases of the zirconia are stabilized by a combination of reduced Ti compounds and yttrium oxide.

ADDITIVE FOR MOLDING OF CERAMIC MATERIAL

The present invention relates to an additive for use in the molding of a ceramic material, which exhibits satisfactory water absorption performance in a ceramic green ceramic clay, can highly achieve both high fluidability and low loading performance during extrusion molding and high shape-retaining performance after extrusion at the same time, and comprises polymer microparticles. This additive for use in the molding of a ceramic material comprises polymer microparticles, is characterized in that the polymer microparticles have an average particle size between 10 and 150 μm when the polymer microparticles are swollen with ion exchange water until the swollen polymer microparticles reach a saturated state and can absorb 10-60 mL/g of ion exchange water under ordinary pressure, and is also characterized in that an aqueous dispersion prepared by dispersing 1 part by mass of the polymer microparticles in 110 parts by mass of ion exchange water has an electrical conductivity of 1500 μS/cm or less at 25° C. 1. An additive comprising a polymer microparticle having an ionic functional group , wherein the polymer microparticle has:(a) an average particle size between 10 and 150 μm when the polymer microparticle is swollen with ion exchange water until the swollen polymer microparticle reaches a saturated state;(b) an ion exchange water absorbing amount between 10 and 60 mL/g at an ordinary pressure; and(c) an electroconductivity of 1,500 μS/cm or less at a temperature of 25° C., in a form of aqueous dispersion obtained by dispersing 1 part by mass of the polymer microparticle in 110 parts by mass of ion exchange water.2. The additive of claim 1 ,wherein a content of the ionic functional group in the polymer microparticle is between 1.5 and 9.0 mmol/g.3. The additive of claim 1 ,wherein the ionic functional group is an acidic functional group neutralized with alkali.4. The additive of claim 1 , comprising 5.0% by mass or less of an adduct of the polymer microparticle with ...

Semiconductor ceramic and resistive element

Provided is a resistive element which has excellent inrush current resistance, and can suppress heat generation in a steady state. The resistive element has an element main body of a semiconductor ceramic in which the main constituent has a structure of R1 1-x R2 x BaMn 2 O 6 in which 0.05≦x≦1.0 when R1 is Nd and R2 is at least one of Sm, Eu and Gd; 0.05≦x≦0.8 when R1 is Nd and R2 is at least one of Tb, Dy, Ho, Er, and Y; 0≦x≦0.4 when R1 is at least one of Sm, Eu, and Gd and R2 is at least one of Tb, Dy, Ho, and Y; and 0≦x≦1.0 when R1 is at least one of Sm, Eu, and Gd and R2 is at least one of Sm, Eu, and Gd, but the Sm, Eu, and/or Gd in R1 is different from that in R2.

SINTERED MAGNESIUM OXIDE MATERIAL, AND PROCESS FOR PRODUCTION THEREOF

Disclosed herein are a sintered magnesium oxide material which is capable of suppressing the occurrence of splashing during film formation and which is less likely to cause clogging of a supply inlet of a film formation device, a deposition material for PDP-protecting film using the same, and a process for producing the sintered material. The sintered magnesium oxide material contains magnesium oxide, 3 to 50 mass % of an oxide of a Group 2A element other than magnesium in the periodic table, and if necessary, 1000 ppm or less of one or two or more elements selected from the group consisting of aluminum, yttrium, cerium, zirconium, scandium, and chromium, and has a disk-like, elliptical plate-like, polygonal plate-like, or half-moon-like shape or a cubic or rectangular solid shape with rounded apexes. 1. A magnesium oxide sintered body comprising magnesium oxide and 3 to 50 mass % of an oxide of a Group 2A element other than magnesium in the periodic table , the magnesium oxide sintered body having a disk-like , elliptical plate-like , polygonal plate-like , or half-moon-like shape or a cubic or rectangular solid shape with rounded apexes.2. The magnesium oxide sintered body according to claim 1 , wherein the Group 2A element other than magnesium in the periodic table is one or two or more selected from the group consisting of calcium claim 1 , beryllium claim 1 , strontium claim 1 , barium claim 1 , and radium.3. The magnesium oxide sintered body according to claim 2 , wherein the Group 2A element other than magnesium in the periodic table is calcium.4. The magnesium oxide sintered body according to claim 1 , further comprising one or two or more elements selected from the group consisting of aluminum claim 1 , yttrium claim 1 , cerium claim 1 , zirconium claim 1 , scandium claim 1 , and chromium in an amount of 1000 ppm or less.5. The magnesium oxide sintered body according to claim 1 , whose relative density is 80% or higher.6. An evaporation material for ...

SEMICONDUCTOR CERAMIC AND RESISTIVE ELEMENT

Provided is a resistive element which is excellent in inrush current resistance even in the case of having a surface-mountable small chip shape. The resistive element has an element main body composed of a semiconductor ceramic in which a main constituent thereof is composed of a Mn compound represented by the general formula (NdM)BaMnO(M is at least one rare-earth element selected from Sm, Gd, Eu, Tb, Dy, Ho, Er, and Y), and x, y, and z respectively meet the conditions of: 0.05≦x≦0.4; 0.80≦y≦1.2; and 0.80≦z≦1.2 in the chemical formula. 1. A semiconductor ceramic having a main constituent which comprises a Mn compound represented by a general formula (NdM)BaMnOin which M is at least one rare-earth element selected from the group consisting of Sm , Gd , Eu , Tb , Dy , Ho , Er , and Y , 0.05≦x≦0.4; 0.80≦y≦1.2; and 0.80≦z≦1.2.2. The semiconductor ceramic according to wherein 0.1≦x≦0.3.3. The semiconductor ceramic according to wherein y and z are ≦1.0.4. A resistive element comprising:an element main body, and a pair of electrodes having at least a portion of the element main body interposed therebetween,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein the element main body comprises the semiconductor ceramic according to .'}5. A thermistor element for suppressing an inrush current comprising the resistive element according to .6. The resistive element according to claim 5 , wherein the element main body has a chip shape claim 5 , and the electrodes are on respective end surfaces of the element main body so as to be opposed to each other.7. The resistive element according to claim 6 , wherein the element main body has a volume of 20 mmor less.8. The resistive element according to claim 4 , wherein the element main body has a chip shape claim 4 , and the electrodes are on respective end surfaces of the element main body so as to be opposed to each other.9. The resistive element according to claim 8 , wherein the element main body has a volume of 20 mmor less.10 ...

CERAMIC PANEL INCLUDING SLAG AND STONE DUST

A radon-free ceramic panel includes a mixture including two or more types of stone dust selected from among granite, basalt, limestone, dolomite, elvan, black stone, feldspar, and sandstone, along with waste slag and a non-phenolic adhesive. The ceramic panel is lightweight and has excellent fire resistance, heat insulation, corrosion resistance, water resistance, and ability to act as a bather to radon gas. 1. A ceramic panel comprising:a mixture including slag and two or more types of stone dust selected from among granite, basalt, limestone, dolomite, elvan, black stone, feldspar, and sandstone; anda non-phenolic adhesive.2. The ceramic panel of claim 1 , wherein the non-phenolic adhesive includes resin beads manufactured by mixing a urethane acrylate resin and a polyamide resin.3. The ceramic panel of claim 2 , wherein the urethane acrylate resin and the polyamide resin are mixed at a weight ratio of 1:1 to 5:1.4. The ceramic panel of claim 1 , wherein the mixture includes the slag and the stone dust mixed at a weight ratio of 3:7 to 5:5.5. The ceramic panel of claim 1 , wherein the mixture including the slag and the stone dust is a fiberized material having a density of 80 to 100 kg/m claim 1 , and the ceramic panel has a thickness of 5 to 30 mm and a density of 600 to 1 claim 1 ,500 kg/m. The present application claims priority based on Korean Patent Application No. 10-2019-0081092, filed on Jul. 5, 2019, the entire content of which is incorporated herein for all purposes by this reference.The present invention relates to a ceramic panel including slag and stone dust. More particularly, the present invention relates to a radon-free ceramic panel which includes two or more types of stone dust and waste slag and has excellent combustion resistance, durability, and ability to act as a bather to radon gas.Stone dust or stone dust of rock waste is waste that needs to be buried, and technology for recycling the stone dust into a building material by melting the same ...

JOINED BODY AND METHOD FOR PRODUCING THE SAME

A joined body according to the present invention includes a first member made of a porous ceramic, a second member made of a metal, and a joint formed of an oxide ceramic of a transition metal, the joint joining the first member to the second member . Alternatively, a joined body may include a first member made of a dense material, a second member made of a dense material, and a joint formed of an oxide ceramic of a transition metal, the joint joining the first member to the second member. 1. A joined body , comprising:a first member;a second member; anda joint formed of an oxide ceramic containing at least one of transition metals, the joint joining the first member to the second member.2. The joined body according to claim 1 , wherein the oxide ceramic contains a second component in addition to a first component claim 1 , the first component being a main component and a transition metal claim 1 , the second component being at least one of Li claim 1 , Na claim 1 , K claim 1 , Ga claim 1 , Si claim 1 , Zr claim 1 , Ti claim 1 , Sn claim 1 , Nb claim 1 , Sb claim 1 , and Ta.3. The joined body according to claim 2 , wherein the oxide ceramic contains Fe as the first component and at least one of Si claim 2 , Zr claim 2 , Ti claim 2 , Sn claim 2 , Nb claim 2 , Sb claim 2 , and Ta as the second component.4. The joined body according to claim 2 , wherein the oxide ceramic contains at least one of Cu and Ni as the first component and at least one of Li claim 2 , Na claim 2 , and K as the second component.5. The joined body according to claim 1 , wherein the oxide ceramic has a porosity in the range of 5% to 70% by volume.6. The joined body according to claim 1 , wherein the thickness of a reaction layer formed at a joining interface between the oxide ceramic and at least one of the first member and the second member is 3 μm or less.7. The joined body according to claim 1 , wherein a difference between the thermal expansion coefficient of the first member and the thermal ...

CONDUCTIVE CERAMIC COMPOSITION HAVING EXCELLENT ELECTRICAL CONDUCTIVITY

One embodiment of the present invention provides a conductive ceramic composition comprising: conductive non-oxide ceramic particles; oxide ceramic particles electrostatically bonded or co-dispersed with the non-oxide ceramic particles; and a binder resin. 1. A conductive ceramic composition , comprising:non-oxide ceramic particles;oxide ceramic particles electrostatically bound or co-dispersed with the non-oxide ceramic particles; anda binder resin.2. The conductive ceramic composition of claim 1 , wherein the non-oxide ceramic particles include one selected from the group consisting of a metal component claim 1 , Si claim 1 , B claim 1 , C claim 1 , O claim 1 , S claim 1 , P claim 1 , N and a combination of two or more thereof.3. The conductive ceramic composition of claim 2 , wherein the metal component includes one selected from the group consisting of Sn claim 2 , Ga claim 2 , In claim 2 , Tl claim 2 , As claim 2 , Pb claim 2 , Cd claim 2 , Ba claim 2 , Ce claim 2 , Co claim 2 , Fe claim 2 , Gd claim 2 , La claim 2 , Mo claim 2 , Nb claim 2 , Pr claim 2 , Sr claim 2 , Ta claim 2 , Ti claim 2 , V claim 2 , W claim 2 , Y claim 2 , Zr claim 2 , Si claim 2 , Sc claim 2 , Ni claim 2 , Al claim 2 , Zn claim 2 , Mg claim 2 , Li claim 2 , Ge claim 2 , Rb claim 2 , K claim 2 , Hf claim 2 , Cr and a combination of two or more thereof.4. The conductive ceramic composition of claim 1 , wherein the non-oxide ceramic particles are surface-treated.5. The conductive ceramic composition of claim 4 , wherein the surface treatment is chemical surface treatment with one selected from the group consisting of an acid claim 4 , a base claim 4 , a halogen element claim 4 , a silane-based compound claim 4 , a polymer claim 4 , a metal ionic material claim 4 , carbamic acid claim 4 , a polar solvent claim 4 , a protic solvent claim 4 , an aprotic solvent claim 4 , a non-polar solvent claim 4 , an electrolyte claim 4 , a metal salt claim 4 , a non-metal salt claim 4 , an amine-based ...

ANTIOXIDANTS IN GREEN CERAMIC BODIES CONTAINING VARIOUS OILS FOR IMPROVED FIRING

Green ceramic mixture for extruding into an extruded green body includes one or more inorganic components selected from the group consisting of ceramic ingredients, inorganic ceramic-forming ingredients, and combinations thereof, at least one mineral oil, and from about 0.01 wt % to about 0.45 wt % of an antioxidant based on a total weight of the inorganic component(s), by super addition. The mineral oil has a kinematic viscosity of ≥about 1.9 cSt at 100° C. The at least one antioxidant may have a degradation-rate peak temperature that is greater than the degradation-rate peak temperature of the at least one mineral oil. In some embodiments, the at least one mineral oil includes greater than about 20 wt % alkanes with greater than 20 carbons, based on a total weight of the at least one mineral oil. Methods of making an unfired extruded body using the batch mixture are also disclosed. 1. A method of making porous ceramic bodies , the method comprising:mixing at least one mineral oil, at least one antioxidant, and one or more ceramic ingredients or inorganic ceramic-forming ingredients to form a first batch mixture;extruding the first batch mixture to form a first green body;mixing at least one mineral oil, at least one antioxidant, and one or more ceramic ingredients or inorganic ceramic-forming ingredients to form a second batch mixture;extruding the second batch mixture to form a second green body;firing the first green honeycomb body in a kiln according to a first firing cycle for a first total firing time sufficient to produce a first porous ceramic body;firing the second green body in a kiln according to a second firing cycle for a second total firing time sufficient to produce a second porous ceramic body;wherein the first and second green bodies differ in composition, size, and/or geometry of the respective green body;wherein the amount of antioxidant included in each respective batch mixture is selected such that the first total firing time is the same as the ...

SINTERED COBALT FERRITES COMPOSITE MATERIAL WITH HIGH MAGNETOSTRICTION

Disclosed herein is a sintered cobalt ferrite composite material comprising of nano and micron sized powders of cobalt ferrite with high magnetostriction. The present invention further discloses preparation of nano and micron sized powders of cobalt ferrite, in particular, the auto combustion process using glycine as fuel for preparing nano sized cobalt ferrite powders. 1. Sintered cobalt ferrite composite material comprising of nano and/or micron sized powders of cobalt ferrite , wherein the ratio of nano sized powder of cobalt ferrite to the micron sized powder of cobalt ferrite in said composite is in the ratio ranging between 70:30 to 95:5 wherein said composite material having a density in the range of 79-81% compared to theoretical density and magnetostriction in the range of 340-396 ppm.2. Sintered cobalt ferrite composite material according to claim 1 , wherein the grain size of the composite is in the range of 1 to 10 μm.3. Sintered cobalt ferrite composite material according to claim 1 , wherein particle size of micron sized powder of cobalt ferrite is in the range of 1 to 10 μm.4. Sintered cobalt ferrite composite material according to claim 1 , wherein particle size of the nano sized powder of cobalt ferrite powder is in the range 3 to 40 nm.5. The process for preparation of sintered cobalt ferrite composite material as claimed in claim 1 , wherein said process comprising the steps of:{'sub': 3', '2', '2', '3', '3', '2, 'a. dissolving cobalt nitrate (Co(NO).6HO) and Ferric nitrate (Fe(NO).9HO) in the molar ratio ranging between 1:1.5 to 1:2 in minimum amount of distilled water;'}b. adding glycine solution in minimum amount of water with solution of step (a) wherein the metal ion to glycine is in the molar ratio of 1:0.125 to 1:1.25 followed by mixing to obtain a uniform solution;c. evaporating the solution of step (c) on a hot plate at temperature in the range of 180 to 220° C. to obtain the thick mass which is burnt spontaneously to obtain nano sized ...

COBALT FERRITE MAGNETIC POWDER, METHOD OF PRODUCING THE SAME, AND MAGNETIC RECORDING MEDIUM

[Object] A cobalt ferrite magnetic powder includes magnetic particles that have a uniaxial crystal magnetic anisotropy and contain cobalt ferrite. A peak top 2θ of a (3, 1, 1) plane determined by powder X-ray diffractometry using a CoKα ray is 41.3° or more and 41.5° or less. Some Cos contained in the magnetic particles are substituted with at least one selected from the group consisting of Zn, Ge, and a transition metal element other than Fe. 1. A cobalt ferrite magnetic powder , comprising:magnetic particles that have a uniaxial crystal magnetic anisotropy and contain cobalt ferrite, whereina peak top 2θ of a (3, 1, 1) plane determined by powder X-ray diffractometry using a CoKα ray is 41.3° or more and 41.5° or less, andsome Cos contained in the cobalt ferrite are substituted with at least one selected from the group consisting of Zn, Ge, and a transition metal element other than Fe.2. The cobalt ferrite magnetic powder according to claim 1 , whereina molar ratio (Co/Fe) of Co to Fe is 0.2 or more and less than 0.5.3. The cobalt ferrite magnetic powder according to claim 1 , whereinthe transition metal element include at least one selected from the group consisting of Mn, Ni, Cu, Ta, and Zr.4. The cobalt ferrite magnetic powder according to claim 1 , whereinthe transition metal element includes Cu.5. The cobalt ferrite magnetic powder according to claim 1 , whereinan average particle size is 25 nm or less.6. The cobalt ferrite magnetic powder according to claim 1 , whereina relative standard deviation of a particle size is 50% or less.7. The cobalt ferrite magnetic powder according to claim 1 , whereina coercive force Hc is 2500 Oe or more.8. The cobalt ferrite magnetic powder according to claim 1 , whereinSFD (Switching Field Distribution) is 2.0 or less.9. A tape-shaped magnetic recording medium claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a magnetic layer including the cobalt ferrite magnetic powder according to .'}10. A method of ...

OXIDE SINTERED BODY AND METHOD FOR MANUFACTURING THE SAME, SPUTTERING TARGET, AND SEMICONDUCTOR DEVICE

There is provided an oxide sintered body including indium, tungsten and zinc, wherein the oxide sintered body includes a bixbite type crystal phase as a main component and has an apparent density of higher than 6.5 g/cmand equal to or lower than 7.1 g/cm, a content rate of tungsten to a total of indium, tungsten and zinc is higher than 1.2 atomic % and lower than 30 atomic %, and a content rate of zinc to the total of indium, tungsten and zinc is higher than 1.2 atomic % and lower than 30 atomic %. There are also provided a sputtering target including this oxide sintered body, and a semiconductor device including an oxide semiconductor film formed by a sputtering method by using the sputtering target. 1. An oxide sintered body comprising indium , tungsten and zinc , wherein{'sup': 3', '3, 'said oxide sintered body includes a bixbite type crystal phase as a main component and has an apparent density of higher than 6.5 g/cmand equal to or lower than 7.1 g/cm,'}a content rate of tungsten to a total of indium, tungsten and zinc in said oxide sintered body is higher than 1.2 atomic % and lower than 30 atomic %, anda content rate of zinc to the total of indium, tungsten and zinc in said oxide sintered body is higher than 1.2 atomic % and lower than 30 atomic %.2. The oxide sintered body according to claim 1 , whereinsaid bixbite type crystal phase includes indium oxide as a main component, and includes tungsten and zinc solid-dissolved in at least a part of said bixbite type crystal phase.3. The oxide sintered body according to claim 1 , further comprising at least one type of element selected from the group consisting of aluminum claim 1 , titanium claim 1 , chromium claim 1 , gallium claim 1 , hafnium claim 1 , zirconium claim 1 , silicon claim 1 , molybdenum claim 1 , vanadium claim 1 , niobium claim 1 , tantalum claim 1 , and bismuth claim 1 , whereina content rate of said element to a total of indium, tungsten, zinc, and said element in said oxide sintered body is ...

CHIP THERMISTOR AND METHOD OF MANUFACTURING SAME

A chip thermistor has a thermistor portion comprised of a ceramic material containing respective metal oxides of Mn, Ni, and Co as major ingredients; a pair of composite portions comprised of a composite material of Ag—Pd, and respective metal oxides of Mn, Ni, and Co and arranged on both sides of the thermistor portion so as to sandwich in the thermistor portion between the composite portions ; and external electrodes connected to the pair of composite portions , respectively. In this manner, the pair of composite portions are used as bulk electrodes and, for this reason, the resistance of the chip thermistor can be adjusted mainly with consideration to the resistance in the thermistor portion , without need for much consideration to the distance between the external electrodes and other factors. 1. A chip thermistor comprising:a thermistor portion comprised of a ceramic material containing a metal oxide of at least one of Mn, Ni, or Co as a major ingredient;a pair of composite portions comprised of a composite material including a metal and a metal oxide and arranged on both sides of the thermistor portion so as to sandwich in the thermistor portion between the composite portions.2. The chip thermistor according to claim 1 , wherein the thermistor portion is configured in a layered structure such that a direction in which the pair of composite portions are opposed to each other is a laminated direction.3. The chip thermistor according to claim 1 , wherein each of the pair of composite portions is configured in a layered structure such that a direction in which the pair of composite portions are opposed to each other is a laminated direction.4. The chip thermistor according to claim 1 , wherein the thermistor portion is substantially totally connected to the pair of composite portions claim 1 , on both sides thereof.5. The chip thermistor according to claim 1 , wherein the thermistor portion is composed of a thermistor element having a negative characteristic claim ...

Heating Assembly

A heating assembly for a thermal joining device, the heating assembly including a base body, through which a fluid passage passes and which is provided on an external surface with a heating device having a ceramic substrate designed as a thick-film ceramic material and a metallic heating conductor, wherein the heating conductor is produced from an anti-adhesion alloy, and/or wherein the heating conductor is coated with an anti-adhesion alloy coating, the anti-adhesion alloy containing a proportion of at least 5 percent by weight of at least one element from the group of the metals of the rare earths. 1. A heating assembly for a thermal joining device , the assembly comprising a base body , through which a fluid passage passes and which is provided on an external surface with a heating device comprising a ceramic substrate designed as a thick-film ceramic material and a metallic heating conductor , wherein the heating conductor is produced from an anti-adhesion alloy , and/or wherein the heating conductor is coated with an anti-adhesion alloy coating , the anti-adhesion alloy containing a proportion of at least 5 percent by weight of at least one element from the group of the metals of the rare earths.2. The heating assembly according to claim 1 , wherein the heating conductor is applied to the ceramic substrate as an amorphous mass claim 1 , and joined to the substrate by adhesive force.3. The heating assembly according to claim 2 , wherein the heating conductor is applied to the ceramic substrate in a spraying or screen printing process or in a direct printing process.4. The heating assembly according to claim 2 , wherein the heating conductor is joined to the substrate involving thermal effects claim 2 ,5. The heating assembly according to claim 1 , wherein the heating conductor is produced from a strip material.6. The heating assembly according to claim 1 , wherein an intermediate layer is placed between the substrate and the heating conductor for the improvement ...

METHODS FOR FABRICATING THREE-DIMENSIONAL METALLIC OBJECTS VIA ADDITIVE MANUFACTURING USING METAL OXIDE PASTES

Methods of forming three-dimensional metallic objects are provided. A metal oxide paste comprising metal oxide particles, a polymeric binder and an organic solvent is extruded through a tip to deposit sequential layers of the metal oxide paste on a substrate to form a three-dimensional metal oxide object. The three-dimensional metal oxide object is exposed to a reducing gas at a temperature and for a period of time sufficient to reduce and to sinter the metal oxide particles to form a three-dimensional metallic object. Depending upon the composition of the metal oxide paste, the three-dimensional metallic object may be composed of a single metal, a simple or complex metal-metal alloy, or a metal-ceramic composite. 1. A method of forming a three-dimensional metallic object , the method comprising:(a) extruding a paste comprising metal oxide particles or non-oxide metal ceramic particles; a polymeric binder; and an organic solvent, through a tip to deposit sequential layers of the paste on a substrate, whereby a three-dimensional metal oxide object or a three-dimensional non-oxide metal ceramic object is formed on the substrate, and(b) exposing the three-dimensional metal oxide object or the three-dimensional non-oxide metal ceramic object to a reducing gas at a temperature and for a period of time sufficient to reduce and to sinter the metal oxide particles or the non-oxide metal ceramic particles, whereby the three-dimensional metallic object is formed.2. The method of claim 1 , wherein the paste is a metal oxide paste comprising the metal oxide particles claim 1 , the polymeric binder and the organic solvent.3. The method of claim 2 , wherein the metal oxide particles are iron oxide particles claim 2 , copper oxide particles claim 2 , nickel oxide particles claim 2 , cobalt oxide particles claim 2 , manganese oxide particles claim 2 , zinc oxide particles or combinations thereof.4. The method of claim 2 , wherein the metal oxide paste comprises two or more ...

METHODS FOR FABRICATING GRADIENT ALLOY ARTICLES WITH MULTI-FUNCTIONAL PROPERTIES

Systems and methods for fabricating multi-functional articles comprised of additively formed gradient materials are provided. The fabrication of multi-functional articles using the additive deposition of gradient alloys represents a paradigm shift from the traditional way that metal alloys and metal/metal alloy parts are fabricated. Since a gradient alloy that transitions from one metal to a different metal cannot be fabricated through any conventional metallurgy techniques, the technique presents many applications. Moreover, the embodiments described identify a broad range of properties and applications. 1. A method of fabricating a multi-functional multilayer article comprising:determining a shape for the article and defining at least two spatially separated regions on said article, said two regions to be formed of at least two distinct materials being joined by at least one compositional gradient transition region;mapping a compositional gradient pathway onto said article between said at least two regions such that the at least one compositional gradient transition region substantially excludes any undesirable compositional phases; andforming the article, wherein at least the at least one compositional gradient transition region comprises a plurality of distinct gradient layers formed by incrementally adjusting the compositional ratio between the at least two distinct materials.2. The method according to claim 1 , wherein the incremental adjustment between the at least two distinct materials comprises compositional increments between 0.1 and 50%.3. The method according to claim 1 , wherein the at least one gradient transition region comprises a direct compositional transition from one distinct material to another.4. The method according to claim 1 , wherein the at least one gradient transition region comprises a multi-stage gradient wherein the gradient region includes both incremental compositional steps and direct stepwise compositional transitions.5. The ...

MATERIAL FOR STORING AND RELEASING OXYGEN

The invention relates to a material for storing and releasing oxygen, consisting of a reactive ceramic made of copper, manganese and iron oxides, wherein, subject to the oxygen partial pressure of a surrounding atmosphere and/or an ambient temperature, the reactive ceramic has a transition region that can be passed through any number of times, said transition region being between a discharge threshold state of a three-phase crednerite/cuprite/hausmannite mixed ceramic and a charge threshold state of a two-phase spinel/tenorite mixed ceramic. A passing through of the transition region from the discharge threshold state towards the charging threshold state is associated with oxygen uptake and a passing through of the transition region from the charge threshold state towards the discharge threshold state is associated with oxygen release. 1. A material for storing and releasing oxygen , consisting of a reactive ceramic made of copper , manganese and iron oxides , wherein , subject to the oxygen partial pressure of a surrounding atmosphere and/or an ambient temperature , the reactive ceramic has a transition region that can be passed through any number of times , said transition region being between a discharge threshold state of a three-phase crednerite/cuprite/hausmannite mixed ceramic and a charge threshold state of a two-phase spinel/tenorite mixed ceramic , whereina passing through the transition region from the discharge threshold state towards the charge threshold state is associated with oxygen uptake and a passing through the transition region from the charge threshold state towards the discharge threshold state is associated with oxygen release.2. The material according to claim 1 ,characterized in thatthe reactive ceramic has a chemical composition in which the substance proportion between the portion of copper and the combined portion of manganese and iron is between 0.7/0.3 and 0.4/0.6, and the substance proportion between manganese and iron is between 0.2/ ...

METHOD FOR PRODUCING A RAW MATERIAL FOR THE PRODUCTION OF REFRACTORY CERAMIC PRODUCTS, A RAW MATERIAL PRODUCED ACCORDING TO THE METHOD AND A RAW MATERIAL FOR PRODUCING REFRACTORY CERAMIC PRODUCTS

The invention relates to a method for producing a raw material for the production of refractory ceramic products, a raw material produced by said method, and a raw material for producing refractory ceramic products. 1. Method for producing a raw material for the production of refractory ceramic products that comprises the following steps:provision of a raw material containing Cr(VI)that is present to at least 50% by weight in a particle size greater than 50 μm;provision of ascorbic acid;provision of water;combining of the raw material containing Cr(VI) with the ascorbic acid and the water;mixing of the raw material containing Cr(VI) with the ascorbic acid and the water;drying of the raw material containing Cr(VI); whereinthe method is carried out such that the particle size of the raw material containing Cr(VI) does not change or does not change significantly during the course of the method.2. Method as claimed in claim 1 , in which the raw material containing Cr(VI) is provided in the form of used refractory ceramic products.3. Method as claimed in claim 1 , in which the raw material containing Cr(VI) is provided with a content of Cr(VI) of at least 500 ppm.4. Method as claimed in claim 1 , in which after drying claim 1 , the raw material containing Cr(VI) has a content of Cr(VI) of less than 500 ppm.5. Method as claimed in claim 1 , in which after drying claim 1 , the raw material containing Cr(VI) is provided as a raw material for the production of refractory ceramic products.6. Raw material containing Cr(VI) claim 1 , treated by a method claim 1 , the method comprising:provision of the raw material containing Cr(VI) that is present to at least 50% by weight in a particle size greater than 50 μm;provision of ascorbic acid;provision of water;combining of the raw material containing Cr(VI) with the ascorbic acid and the water;mixing of the raw material containing Cr(VI) with the ascorbic acid and the water;drying of the raw material containing Cr(VI); whereinthe ...

Channeled Articles and Methods for Their Manufacture

An article with a body having spaced channels created at a surface of the body and extending into the body, wherein the channels are located at controlled spaced locations. The channeled or microchanneled articles may be in the form of channeled or microchanneled membranes or otherwise. Methods of manufacturing channeled articles and uses of the channeled articles are described. 146-. (canceled)47. A method of manufacturing an article containing spaced channels comprising:bringing a template having spaced openings into contact with a solution comprising a first solvent and a polymer that is soluble in the first solvent; and,introducing a second solvent into the solution through the openings of the template to cause phase inversion of the solution and to form an article containing spaced channels extending from a surface of the article into a body of the article.48. The method according to claim 47 , wherein the solution further comprises a particulate material suspended in the solution.49. The method according to claim 47 , wherein the solution further comprises polyvinylpyrrolidone claim 47 , polyethylene glycol claim 47 , prionic acid or a surfactant.50. The method according to claim 47 , wherein:the solution comprises a first solvent, a polymer that is soluble in the first solvent, and a ceramic material to form a ceramic slurry;the second solvent is an antisolvent; andthe method forms a ceramic article containing spaced channels extending from a surface of the ceramic article into a body of the ceramic article.51. The method according to claim 50 , further comprising locating the template below a surface of the ceramic slurry.52. The method according to claim 47 , further comprising removing the template after phase inversion.53. The method according to claim 47 , further comprising terminating the channels within the body of the article to form channels closed at one end.54. The method according to claim 47 , wherein the method further comprises subjecting the ...

OXIDE SINTERED BODY AND SPUTTERING TARGET

An oxide sintered body has metal elements of In, Ga, Zn, and Sn and contains GaInSnO, ZnGaO, and InGaZnO. The contents of In, Ga, Zn, and Sn in the oxide sintered body satisfy the relations [Ga]≥37 atomic %, [Sn]≤15 atomic %, and [Ga]/([In]+[Zn])≥0.7, where [In], [Ga], [Zn], and [Sn] represent ratios (atomic %) of In, Ga, Zn, and Sn with respect to all metal elements contained in the oxide sintered body, respectively. 2. The oxide sintered body according to claim 1 , wherein when the oxide sintered body is subjected to X-ray diffraction claim 1 , the GaInSnO claim 1 , ZnGaO claim 1 , and InGaZnOsatisfy expression (4):{'br': None, 'sub': 2', '6', '2', '16', '2', '4', '4, '[GaInSnO]+[ZnGaO]+[InGaZnO]≥0.9\u2003\u2003(4),'}where{'sub': 2', '6', '2', '16', '2', '6', '2', '16', '2', '6', '2', '16', '2', '4', '4, '[GaInSnO]═I(GaInSnO)/(I(GaInSnO)+I(ZnGaO)+I(InGaZnO)+I(other crystal phases)),'}{'sub': 2', '4', '2', '4', '2', '6', '2', '16', '2', '4', '4, '[ZnGaO]=I(ZnGaO)/(I(GaInSnO)+I(ZnGaO)+I(InGaZnO)+I(other crystal phases)), and'}{'sub': 4', '4', '2', '6', '2', '16', '2', '4', '4, 'claim-text': {'sub': 2', '6', '2', '16', '2', '4', '4', '2', '6', '2', '16', '2', '4', '4', '2', '6', '2', '16', '2', '4', '4, 'where, I(GaInSnO), I(ZnGaO), and I(InGaZnO) are respectively diffraction peak intensities of GaInSnOphase, ZnGaOphase and InGaZnOphase identified by X-ray diffraction, and I(other crystal phases) is a diffraction peak intensity of a crystal phase identified by X-ray diffraction other than GaInSnO, ZnGaO, and InGaZnO.'}, '[InGaZnO]=I(InGaZnO)/(I(GaInSnO)+I(ZnGaO)+I(InGaZnO)+I(other crystal phases));'}3. The oxide sintered body according to claim 1 , wherein an average grain size of the oxide sintered body is 10 μm or less.4. The oxide sintered body according to claim 3 , wherein the average grain size is 7 μm or less.5. The oxide sintered body according to claim 1 , wherein the atomic ratio of Sn satisfies{'br': None, '2 atomic %≤[Sn].'}6. A sputtering target obtained ...

NANOSTRUCTURED COMPOSITE MATERIALS COMPRISING REFRACTORY ELEMENTS

A bicontinuous non-porous microstructure comprising a refractory phase and a non-refractory phase, wherein the refractory phase substantially comprises one or more refractory elements and the non-refractory phase comprises a void filled by one or more materials that are different than a material comprising the non-refractory phase in a bicontinuous network from which the nanocomposite refractory material is formed and methods of making the same are disclosed. 1. A nanocomposite refractory material comprising:a bicontinuous non-porous microstructure comprising a refractory phase and a non-refractory phase, wherein the refractory phase substantially comprises one or more refractory elements and the non-refractory phase comprises a void filled by one or more materials, wherein the one or more materials filling the void are different than a material comprising the non-refractory phase in a bicontinuous network from which the nanocomposite refractory material is formed.2. The nanocomposite refractory material of claim 1 , wherein the one or more refractory elements is selected from the group consisting of tantalum (Ta) claim 1 , tungsten (W) claim 1 , molybdenum (Mo) claim 1 , niobium (Nb) claim 1 , rhenium (Re).3. The nanocomposite refractory material of claim 1 , wherein a surface claim 1 , bulk claim 1 , or combination thereof of the refractory phase comprises an oxide claim 1 , nitride claim 1 , or carbide of the one or more refractory elements.4. The nanocomposite refractory material of claim 1 , wherein the one or more materials filling the void in the non-refractory phase is selected from the group consisting of a polymer claim 1 , an oxide claim 1 , a ceramic claim 1 , an alloy claim 1 , and a metal different from a metal comprising the non-refractory phase in a bicontinuous network from which the nanocomposite refractory material is formed.5. The nanocomposite refractory material of claim 1 , wherein the nanocomposite refractory material has a characteristic ...

LAMINATION-SHAPED FIRED BODY, METHOD FOR PRODUCING LAMINATION-SHAPED FIRED BODY, AND KIT FOR PRODUCING LAMINATION-SHAPED FIRED BODY

The present invention provides a method for producing a lamination-shaped fired body. This production method includes a shaping step (S) of shaping a lamination-shaped article by using a lamination shaping powder that contains non-hydrating reaction raw material particles, an impregnation step (S) of impregnating the lamination-shaped article with a coupling liquid that contains a coupling agent, and a firing step (S) of firing the lamination-shaped article so as to obtain a lamination-shaped fired body, implemented following the impregnation step. 1. A method for producing a lamination-shaped fired body ,the method comprising:a shaping step of shaping a lamination-shaped article by using a lamination shaping powder that contains non-hydrating reaction raw material particles;an impregnation step of impregnating the lamination-shaped article with a coupling liquid that contains a coupling agent; anda firing step of firing the lamination-shaped article so as to obtain a lamination-shaped fired body, implemented following the impregnation step.2. The method for producing a lamination-shaped fired body according to claim 1 , wherein the coupling agent contains at least one element selected from the group consisting of Si claim 1 , Ti claim 1 , Al and Zr.3. The method for producing a lamination-shaped fired body according to claim 1 , wherein the non-hydrating reaction raw material particles are constituted mainly from a metal containing at least one element selected from the group consisting of Al claim 1 , Zr claim 1 , Ti claim 1 , Zn claim 1 , Ni and Fe or an alloy thereof.4. The method for producing a lamination-shaped fired body according to claim 1 , wherein the non-hydrating reaction raw material particles are constituted mainly from an oxide containing at least one element selected from the group consisting of Al claim 1 , Zr claim 1 , Ti claim 1 , Zn claim 1 , Ni claim 1 , Fe and Si.5. The method for producing a lamination-shaped fired body according to claim 1 ...

COIL DEVICE

A coil device includes: a drum core having first and second flange portions and a winding core portion therebetween; a coil wound around the core portion; a plate core connected to first and second flange portions first and second flange surfaces at a first direction side; a first electrode terminal on the first flange portion, one coil end portion electrically connected on the first electrode terminal; and a second electrode terminal on the second flange portion, the other coil end portion electrically connected on the second electrode terminal. The plate core has a first and second projecting portions respectively protruding toward the first and second flange surfaces and having first and second flat surfaces facing the first and second flange surfaces. The drum core and the plate core are connected by abutting and bonding the first and second flange surfaces against the first and second flat surfaces. 1. A coil device comprising:a drum core having a first flange portion, a second flange portion and a winding core portion disposed between the first and second flange portions;a coil wound around the winding core portion;a plate core connected to a first flange surface of the first flange portion at a first direction side and a second flange surface of the second flange portion at the first direction side;a first electrode terminal provided on the first flange portion, one end portion of the coil being electrically connected on the first electrode terminal; anda second electrode terminal provided on the second flange portion, the other end portion of the coil being electrically connected on the second electrode terminal, whereinthe plate core has a first projecting portion protruding toward the first flange surface and having a first flat surface facing the first flange surface and a second projecting portion protruding toward the second flange surface and having a second flat surface facing the second flange surface, andthe drum core and the plate core are ...

CARBON FIBERS IN CERAMIC CORES FOR INVESTMENT CASTING

A method of producing a ceramic core for investment casting is provided. The method includes injecting a slurry into a disposable die. The slurry includes ceramic particles, a binder, and carbon fibers. The method also includes a first heating to eliminate the disposable die, leaving a cured ceramic core comprising the ceramic particles, binder, and carbon fibers. 1. A method of producing a ceramic core for investment casting , the method comprising at least a step of:injecting a slurry into a disposable die, the slurry comprising ceramic particles, binders, and carbon fibers.2. The method of claim 1 , wherein at least a portion of the ceramic core defines an internal surface of a turbine blade.3. The method of claim 1 , wherein the slurry includes carbon fibers in a concentration not exceeding 20 wt % of the slurry.4. The method of claim 1 , wherein the carbon fibers have an average diameter of 200 microns or less.5. The method of claim 4 , wherein the carbon fibers have an average diameter of 100 microns or less.6. The method of claim 1 , wherein the carbon fibers have an aspect ratio of greater than 1:1 up to 100:1.7. The method of claim 6 , wherein the carbon fibers have an aspect ratio of greater than 10:1 up to 100:1.8. The method of claim 1 , further comprising at least one additional heating step that removes the disposable die.9. The method of claim 1 , further comprising at least one additional heating step that substantially removes the carbon fibers.10. A fired ceramic core comprising ceramic particles and fiber-shaped voids claim 1 , the fiber-shaped voids generally aligned with an axis of the core.11. The ceramic core of claim 10 , wherein at least a portion of the ceramic core defines an internal surface of a turbine blade.12. The ceramic core of claim 10 , wherein the voids have an average diameter of 200 microns or less.13. The ceramic core of claim 10 , wherein the voids have an average diameter of 100 microns or less.14. The ceramic core of claim ...

MNZN FERRITE AND ITS PRODUCTION METHOD

A method for producing MnZn ferrite comprising Fe, Mn and Zn as main components, and Ca, Si and Co, and at least one selected from the group consisting of Ta, Nb and Zr as sub-components, comprising a step of molding a raw material powder for the MnZn ferrite to obtain a green body, and a step of sintering the green body; the sintering step comprising a temperature-elevating step, a high-temperature-keeping step, and a cooling step; the cooling step including a slow cooling step of cooling in a temperature range of 1100° C. to 1250° C. at a cooling speed of 0° C./hour to 20° C./hour for 1 hours to 20 hours, and a cooling speed before and after the slow cooling step being higher than 20° C./hour; the MnZn ferrite having a volume resistivity of 8.5 Ω·m or more at room temperature, an average crystal grain size of 7 μm to 15 μm, and core loss of 420 kW/mor less between 23° C. and 140° C. at a frequency of 100 kHz and an exciting magnetic flux density of 200 mT. 1. A method for producing MnZn ferrite comprising Fe , Mn and Zn as main components , and Ca , Si and Co , and at least one selected from the group consisting of Ta , Nb and Zr as sub-components , comprisinga step of molding a raw material powder for said MnZn ferrite to obtain a green body, anda step of sintering said green body;said sintering step comprising a temperature-elevating step, a high-temperature-keeping step, and a cooling step;said cooling step including a slow cooling step of cooling in a temperature range of 1100° C. to 1250° C. at a cooling speed of 0° C./hour to 20° C./hour for 1 hours to 20 hours, anda cooling speed before and after said slow cooling step being higher than 20° C./hour,{'sup': '3', 'said MnZn ferrite having a volume resistivity of 8.5 Ω·m or more at room temperature, an average crystal grain size of 7 μm to 15 μm, and core loss of 420 kW/mor less between 23° C. and 140° C. at a frequency of 100 kHz and an exciting magnetic flux density of 200 mT.'}2. The method for producing ...

INORGANIC PHOSPHATE COMPOSITIONS AND METHODS

Disclosed and described are multi-component inorganic phosphate formulations of acidic phosphate components and basic oxide/hydroxide components. Also disclosed are high solids, atomizable compositions of same, suitable for spray coating. 1. An atomizable phosphate ceramic spray system comprising{'sup': 'm', 'sub': 2', '4', 'm', '2, 'a first component cartridge comprising an aqueous solution of an acid-phosphate of chemical formula A(HPO).nHO, where A is hydrogen ion, ammonium cation, metal cation, or mixtures thereof; where m=1-3, and n=0-6; the first component solution adjusted to a pH of about 2 to about 5;'}{'sup': '2m', 'sub': m', '2m, 'a second component cartridge comprising an aqueous solution of an alkaline oxide or alkaline hydroxide represented by BO, B(OH), or mixtures thereof, where B is an element of valency 2m (m=1, 1.5, or 2) the second component solution adjusted to a pH of between 9-14; and'}optionally, a rheology modifier/suspending agent in an amount capable of providing shear thinning of either the first component or the second component and further capable of suspending a high solids content of either the first component or the second component for atomization; andhigh shear dispersion blade; anda plural sprayer operably connected to a pump.2. The phosphate ceramic spray system of claim 1 , wherein the second component is at least one of magnesium hydroxide and calcium hydroxide claim 1 , and water.3. The phosphate ceramic spray system of claim 1 , wherein the first component comprises about 2 to about 10 wt % phosphoric acid claim 1 , water claim 1 , and at least one of mono potassium phosphate and mono calcium phosphate.4. The phosphate ceramic spray system of claim 1 , further comprising aluminum oxide present in an amount sufficient to increase the hardness of the phosphate ceramic.5. The phosphate ceramic spray system of claim 1 , wherein the rheology modifier/suspending agent is at least one of guar gum claim 1 , diutan gum claim 1 , welan ...

FERRITE MATERIAL, COMPOSITE MAGNETIC BODY, COIL COMPONENT, AND POWER SUPPLY DEVICE

Provided are a ferrite material, a composite magnetic body, a coil component, and a power supply device, having high magnetic permeability. Ferrite is ferromagnetic and is expressed by a chemical formula MnSiFeO, where 00, z>0, x+y+z=3, and δ≤0.5. 1. A ferrite material that is ferromagnetic and is expressed by a chemical formula MnSiFeO , where 00,z>0,x+y+z=3, andδ≤0.5.2. The ferrite material according to claim 1 , wherein{'sub': x', 'y', 'z', '4-δ, 'in the chemical formula MnSiFeO, y satisfies 0 Подробнее

OXIDE SINTERED BODY AND METHOD FOR MANUFACTURING THE SAME, SPUTTERING TARGET, AND SEMICONDUCTOR DEVICE

There is provided an oxide sintered body including indium, tungsten and zinc, wherein the oxide sintered body includes a bixbite type crystal phase as a main component and has an apparent density of higher than 6.6 g/cmand equal to or lower than 7.5 g/cm, a content rate of tungsten to a total of indium, tungsten and zinc in the oxide sintered body is higher than 0.5 atomic % and equal to or lower than 5.0 atomic %, a content rate of zinc to the total of indium, tungsten and zinc in the oxide sintered body is equal to or higher than 1.2 atomic % and equal to or lower than 19 atomic %, and an atomic ratio of zinc to tungsten is higher than 1.0 and lower than 60. There are also provided a sputtering target including this oxide sintered body, and a semiconductor device. 1. An oxide sintered body comprising indium , tungsten and zinc , whereinthe oxide sintered body includes a bixbite type crystal phase as a main component,{'sup': 3', '3, 'the oxide sintered body has an apparent density of higher than 6.6 g/cmand equal to or lower than 7.5 g/cm,'}a content rate of tungsten to a total of indium, tungsten and zinc in the oxide sintered body is higher than 0.5 atomic % and equal to or lower than 5.0 atomic %,a content rate of zinc to the total of indium, tungsten and zinc in the oxide sintered body is equal to or higher than 1.2 atomic % and equal to or lower than 19 atomic %, andan atomic ratio of zinc to tungsten is higher than 1.0 and lower than 60.2. The oxide sintered body according to claim 1 , whereinthe bixbite type crystal phase includes indium oxide as a main component, and includes at least one of tungsten and zinc solid-dissolved in at least a part of the bixbite type crystal phase.3. The oxide sintered body according to claim 1 , whereinthe oxide sintered body further includes a hexagonal wurtz type crystal phase.4. The oxide sintered body according to claim 1 , whereinthe oxide sintered body further includes a zinc tungstate compound crystal phase.5. A ...

SUBSTITUTION-TYPE EPSILON-IRON OXIDE MAGNETIC PARTICLE POWDER, METHOD FOR PRODUCING SUBSTITUTION-TYPE EPSILON-IRON OXIDE MAGNETIC PARTICLE POWDER, GREEN COMPACT, METHOD FOR PRODUCING GREEN COMPACT, AND ELECTROMAGNETIC WAVE

A substitution-type ε-iron oxide magnetic particle powder having a reduced content of a non-magnetic α-type iron-based oxide and Fe sites of ε-FeOpartially substituted by another metal element is obtained by neutralizing an acidic aqueous solution containing a trivalent iron ion and an ion of a metal that partially substitutes Fe sites to a pH of 2.0 or higher and 7.0 or lower. A silicon compound having a hydrolyzable group is added to a dispersion liquid containing an iron oxyhydroxide having a substituent metal element or a mixture of an iron oxyhydroxide and a hydroxide of a substituent metal element. The dispersion liquid is neutralized to a pH of 8.0 or higher and the iron oxyhydroxide having a substituent metal element or the mixture of the iron oxyhydroxide and the hydroxide of a substituent metal element is coated with a chemical reaction product of the silicon compound and then heated. 1. A substitution-type ε-iron oxide magnetic particle powder , mainly comprising an ε-type iron-based oxide in which the Fe sites of ε-FeOare partially substituted by another metal element , wherein when the number of moles of Fe contained in the substitution-type ε-iron oxide magnetic particle powder is represented by Fe and the number of moles of all metal elements substituted for the Fe sites is represented by Me , the substitution amount of Fe by the another metal element defined by Me/(Fe+Me) is 0.08 or more and 0.17 or less , and the content of an α-type iron-based oxide measured by X-ray diffractometry is 3% or less.2. The substitution-type ε-iron oxide magnetic particle powder according to claim 1 , wherein the another metal element that partially substitutes the Fe sites is Co claim 1 , Ti claim 1 , and one or more types selected from Ga and Al.3. A green compact claim 1 , comprising the substitution-type ε-iron oxide magnetic particle powder according to .4. An electromagnetic wave absorber claim 1 , comprising the substitution-type ε-iron oxide magnetic particle ...

METHOD FOR MAKING AMORPHOUS PARTICLES USING A UNIFORM MELT-STATE IN A MICROWAVE GENERATED PLASMA TORCH

Feed material comprising uniform solution precursor droplets is processed in a uniform melt state using microwave generated plasma. The plasma torch employed is capable of generating laminar gas flows and providing a uniform temperature profile within the plasma. Plasma exhaust products are quenched at high rates to yield amorphous products. Products of this process include spherical, highly porous and amorphous oxide ceramic particles such as magnesia-yttria (MgO—YO). The present invention can also be used to produce amorphous non oxide ceramic particles comprised of Boron, Carbon, and Nitrogen which can be subsequently consolidated into super hard materials. 1. A method of producing amorphous powder particles using a uniform melt state process comprising:a) introducing axially uniform precursor droplets from a feed injection device into a microwave plasma torch;b) entraining said feed material using laminar flow towards a microwave generated plasma;c) processing said feed material by exposing it to a uniform high temperature profile within said microwave generated plasma;d) quenching at a high rate the plasma exhaust of said microwave generated plasma;e) filtering the exhaust gas of said microwave generated plasma; andf) extracting amorphous powder particle products from said filtered exhaust gas.2. The method of wherein the feed material is comprised of homogenous precursor solutions of nitrates claim 1 , acetates claim 1 , alkoxides claim 1 , or organometallics.3. The method of wherein the axially introduced uniform precursor droplets have a diameter between 1 and 300 micrometers and a size distribution not exceeding 5%.4. The method of wherein the axially introduced precursor droplets are not uniform and have diameters less than 100 microns and are produced by a gas atomization process.5. The method of wherein the plasma torch is axisymmetric.6. The method of wherein the quenching step is done in air claim 1 , or under inert gas conditions claim 1 , and the ...

A batch for producing a refractory carbon-bonded brick, a method for producing a refractory carbon-bonded brick and a use of Ti2AlC

The invention relates to a batch composition for producing a carbon-bonded refractory stone, a method for producing a carbon-bonded refractory stone, and use of TiAlC. 1. Batch for producing a refractory carbon-bonded brick , comprising the following components:1.1 a refractory basic component,1.2 a carbon component,{'sub': '2', '1.3 TiAlC.'}2. Batch according to with a proportion of TiAlC in range from 1 to 10% by mass.3. Batch according to claim 1 , in which the refractory basic component comprises one or more magnesia claim 1 , alumina or zirconia-based refractory raw materials.4. Batch according to in which the refractory basic component consists at least 90% by mass of at least one of the oxides MgO claim 1 , AlOor ZrO.5. Batch according to in which the refractory basic component comprises one or more of the following refractory raw materials: sinter magnesia claim 1 , fused magnesia claim 1 , sinter corundum claim 1 , fused corundum claim 1 , tabular alumina claim 1 , magnesia spinel or zirconia.6. Batch according to in which the refractory basic components consists of one or more magnesia claim 1 , alumina or zirconia-based refractor raw materials.7. Batch according to in which the refractory basic component consists of one or more of the following refractory raw materials: sinter magnesia claim 1 , fused magnesia claim 1 , sinter corundum claim 1 , fused corundum claim 1 , tabular alumina claim 1 , magnesia spinel or zirconia.8. Batch according to with a proportion of the refractory basic component in the range from 70 to 97% by mass.9. Batch according to in which the carbon component consists of one or more carriers of free carbon as well as also of one or more coking binding agents.10. Batch according to with carriers of free carbon in the form of one or more of the following raw materials: graphite or soot.11. Batch according to with a proportion of the carbon component in the range from 2 to 29% by mass.12. Method of producing a refractory brick with a ...

Refractory ceramic batch and brick formed therefrom

The invention relates to a refractory ceramic batch and to a refractory ceramic brick produced therefrom. 1. A refractory ceramic batch with the compositiona) 75 to 98% by wt. of at least one basic base material from the group: sintered magnesia, fused magnesia,b) 2 to 25% by wt. of at least one granular aggregate from the group: silicon carbide, silicon nitride, silicon oxycarbide, silicon oxycarbonitride,c) maximum 5% by wt. of other constituents, relative to the total batch in each case.2. The refractory ceramic batch according to claim 1 , the basic base material whereof is present in a proportion>10 to <40% by wt. in a fine fraction<125 μm claim 1 , relative to the total batch.3. The refractory ceramic batch according to claim 1 , the basic base material whereof is present in a proportion of >35% by wt. in a grain fraction>1 mm claim 1 , relative to the total batch.4. The refractory ceramic batch according to claim 1 , the granular aggregate whereof is present in a grain fraction>125 μm and <3 mm.5. The refractory ceramic batch according to claim 1 , the granular aggregate whereof is present in a grain fraction>0.5 mm and <2 mm.6. The refractory ceramic batch according to claim 1 , the granular aggregate whereof is present in a quantity of 2-10% by wt. relative to the total batch.7. The refractory ceramic batch according to claim 1 , the basic base material whereof comprises at least 95% by wt. MgO.8. The refractory ceramic batch according to claim 1 , in which the dvalue of the basic granular base material without the fine fraction lies above the dvalue of the granular aggregate.9. The refractory ceramic batch according to claim 1 , the basic base material whereof has an iron content claim 1 , measured as FeO claim 1 , of less than 0.6% by wt. relative to the basic base material claim 1 ,10. The refractory ceramic batch according to claim 1 , which contains less than 0.3% by wt. aluminium oxide relative to the total batch.11. The refractory ceramic batch ...

HEAT-RESISTANT MEMBER AND METHOD FOR PRODUCING THE SAME

A heat-resistant member includes a member that is a target to be protected and a protective layer arranged on the whole or part of a surface of the member The protective layer includes an oxide ceramic containing an FeOphase in which a solute component capable of forming a spinel-type oxide with Fe is solid-dissolved. 1. A heat-resistant member , comprising:a member; and{'sub': 3', '4, 'a protective layer arranged on the whole or part of a surface of the member, the protective layer including an oxide ceramic containing an FeOphase in which a solute component capable of forming a spinel-type oxide with Fe is solid-dissolved.'}2. The heat-resistant member according to claim 1 , wherein the oxide ceramic is composed of an Fe oxide in which one or more of Mn claim 1 , Co claim 1 , Ni claim 1 , Cu claim 1 , and Zn each serving as the solute component are solid-dissolved.3. The heat-resistant member according to claim 1 , wherein the solute component is solid-dissolved in the oxide ceramic in an amount of 0.5% by mass or more and 30% by mass or less.4. The heat-resistant member according to claim 1 , wherein Ni serving as the solute component is solid-dissolved in the oxide ceramic claim 1 , and the peak shift of the (751) plane of FeOis 0.02° or more claim 1 , the peak shift being measured by X-ray diffraction with CuKα radiation.5. The heat-resistant member according to claim 1 , wherein the oxide ceramic further contains an FeO3phase claim 1 , Ni serving as the solute component is solid-dissolved in the oxide ceramic claim 1 , and the peak shift of the (410) plane of FeOis 0.02° or more claim 1 , the peak shift being measured by X-ray diffraction with CuKα radiation.6. The heat-resistant member according to claim 1 , wherein the protective layer includes a surface layer composed of an FeOphase and an inner portion composed of the FeOphase.7. The heat-resistant member according to claim 6 , wherein in the protective layer claim 6 , the surface layer has a thickness of ...

INORGANIC PHOSPHATE COMPOSITIONS AND METHODS

Disclosed and described are multi-component inorganic phosphate formulations of acidic phosphate components and basic oxide/hydroxide components. Also disclosed are high solids, atomizable compositions of same, suitable for spray coating. 1. An atomizable phosphate ceramic spray system comprising{'sup': 'm', 'sub': 4', 'm', '2, 'a first component cartridge comprising an aqueous solution of an acid-phosphate of chemical formula A(HPO).nHO, where A is hydrogen ion, ammonium cation, metal cation, or mixtures thereof; where m=1-3, and n=0-6; the first component solution adjusted to a pH of about 2 to about 5;'}{'sup': '2m', 'sub': m', '2m, 'a second component cartridge comprising an aqueous solution of an alkaline oxide or alkaline hydroxide represented by BO, B(OH), or mixtures thereof, where B is an element of valency 2m (m=1, 1.5, or 2) the second component solution adjusted to a pH of between 9-14; and'}optionally, a rheology modifier/suspending agent in an amount capable of providing shear thinning of either the first component or the second component and further capable of suspending a high solids content of either the first component or the second component for atomization; andhigh shear dispersion blade; anda plural sprayer operably connected to a pump.2. The phosphate ceramic spray system of claim 1 , wherein the second component is at least one of magnesium hydroxide and calcium hydroxide claim 1 , and water.3. The phosphate ceramic spray system of claim 1 , wherein the first component comprises about 2 to about 10 wt % phosphoric acid claim 1 , water claim 1 , and at least one of mono potassium phosphate and mono calcium phosphate.4. The phosphate ceramic spray system of claim 1 , further comprising aluminum oxide present in an amount sufficient to increase the hardness of the phosphate ceramic.5. The phosphate ceramic spray system of claim 1 , wherein the rheology modifier/suspending agent is at least one of guar gum claim 1 , diutan gum claim 1 , welan gum ...

GRAPHENE-CERAMIC HYBRID COATING LAYER, AND METHOD FOR PREPARING THE SAME

Disclosed are a graphene-ceramic hybrid coating layer formed from a graphene-ceramic hybrid sol solution including graphene (RGO: reduced graphene oxide) and a ceramic sol, wherein the graphene content in the graphene-ceramic hybrid coating layer is about 0.001 wt % to about 1.8 wt % based on the total weight of the graphene-ceramic hybrid coating layer, and a method for preparing the same. 1. A graphene-ceramic hybrid sol solution for forming a graphene-ceramic hybrid coating layer , the graphene-ceramic hybrid sol solution including graphene in the form of reduced graphene oxide and a ceramic sol ,wherein a graphene content in the graphene-ceramic hybrid coating layer is about 0.001 wt % to about 1.8 wt % based on the total weight of the graphene-ceramic hybrid coating layer.2. The graphene-ceramic hybrid sol solution of claim 1 , wherein the graphene content is about 0.01 wt % to about 1.8 wt % based on the total weight of the solution.3. The graphene-ceramic hybrid sol solution of claim 1 , wherein the graphene and the ceramic sol are uniformly distributed in the graphene-ceramic hybrid sol solution.4. The graphene-ceramic hybrid sol solution of claim 1 , wherein the ceramic is selected from the group consisting of SiO claim 1 , AlO claim 1 , LiTiO claim 1 , TiO claim 1 , SnO claim 1 , CeO claim 1 , ZrO claim 1 , VO claim 1 , BO claim 1 , BaTiO claim 1 , YO claim 1 , WO claim 1 , MgO claim 1 , CuO claim 1 , ZnO claim 1 , AlPO claim 1 , AlF claim 1 , SiN claim 1 , AlN claim 1 , TiN claim 1 , WC claim 1 , SiC claim 1 , TiC claim 1 , MoSi claim 1 , FeO claim 1 , GeO claim 1 , LiO claim 1 , MnO claim 1 , NiO claim 1 , zeolite claim 1 , and a combination thereof.5. A method for preparing a graphene-ceramic hybrid coating layer claim 1 , comprising:mixing graphene, a first dispersing agent and a first non-aqueous based solvent to prepare a dispersion including the graphene, first dispersing agent and first non-aqueous based solvent;adding a mixed solution of a second ...

MULTI-FUNCTION ECOLOGICAL EXTERIOR WALL AND PREPARATION METHOD THEREFOR

The disclosure discloses a method for preparing a multifunctional ecological exterior wall, including: preparing a ceramic board of a ceramic thermal insulation waterproof layer; preparing a ceramic sound-absorbing board of a sound-absorbing layer; and installing a ecological exterior wall: leveling a surface of the wall of a building with cement slurry, and applying a cement bonding layer thereon; laying the ceramic thermal insulation waterproof board on the cement bonding layer, and applying the cement bonding layer on the ceramic board; laying the ceramic sound-absorbing board on the cement bonding layer and reserving a gap used to place a pipe; driving the screw-thread steel bolt from the surface of the ceramic sound-absorbing board into the wall obliquely; installing and fixing the pipe in the gap, which is reserved at the upper of the ceramic sound-absorbing board; planting a green plant on the surface of the ceramic board of the sound-absorbing layer. 1. A method for preparing a multifunctional ecological exterior wall , comprising:step 1: preparing a ceramic thermal insulation waterproof board as a ceramic thermal insulation waterproof layer;step 2: preparing a ceramic sound-absorbing board as a sound-absorbing layer;step 3: installing an ecological exterior wall:step 3.1: leveling a surface of the wall of a building with cement slurry, and applying a cement bonding layer thereon;step 3.2: laying the ceramic thermal insulation waterproof board on the cement bonding layer in step 3.1, and applying the cement bonding layer on the ceramic thermal insulation waterproof board;step 3.3: laying the ceramic sound-absorbing board on the cement bonding layer in step 3.2, and reserving a gap of 3 cm to 5 cm between the uppermost two adjacent rows of ceramic sound-absorbing boards of each floor of the building, which is used to place a water discharging component for adjusting humidity and temperature;step 3.4: driving the screw-thread steel bolt from the surface of the ...

DIELECTRIC COMPOSITION, DIELECTRIC ELEMENT, ELECTRONIC COMPONENT, AND MULTILAYER ELECTRONIC COMPONENT

A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (SrBaCa)R(TiZr)(NbTa)Oin which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50≤s≤1.00, 0≤t≤0.50, 0.50≤s+t≤1.00, 0.50 Подробнее

BATCH COMPOSITION FOR PRODUCING AN UNSHAPED REFRACTORY CERAMIC PRODUCT, METHOD FOR PRODUCING A FIRED REFRACTORY CERAMIC PRODUCT, FIRED REFRACTORY CERAMIC PRODUCT, AND USE OF AN UNSHAPED REFRACTORY CERAMIC PRODUCT

The invention relates to a batch for producing an unshaped refractory ceramic product, to a method for producing a fired refractory ceramic product, to a fired refractory ceramic product and to the use of an unshaped refractory ceramic product. 1. A batch for producing an unformed refractory ceramic product comprising:1.1 55 to 95% by mass of at least one magnesia-based raw material, and1.2 5 to 45% by mass of at least one magnesite-based raw material, each relative to the total mass of the batch; wherein1.3 the total calcium carbonate content of the magnesite-based raw materials lies below 10% by mass relative to the total mass of the magnesite-based raw materials.2. The batch according to with magnesite-based raw material in the form of raw magnesite.3. The batch according to with magnesia-based raw materials in the form of at least one of the following raw materials:sintered magnesia or olivine.4. The batch according to claim 1 ,wherein at least one of the following oxides exhibits the maximum fraction indicated in each case:CaO<5% by mass;{'sub': 2', '3, 'FeO<3.5% by mass;'}{'sub': 2', '3, 'AlO<3.0% by mass;'}relative to the total mass of the batch in each case.5. A method for producing a fired refractory ceramic product comprising the following steps:5.1 provision of a batch according to at least one of the aforementioned claims;5. 2 application of the batch to the desired production site;5.3 firing of the applied batch into a fired refractory ceramic product.6. A product made using a method according to .7. The product according to which exhibits at least one of the following phases in the fractions indicated in each case:forsterite: >5% by mass;merwinite: <0.5% by mass;relative to the total mass of the product in each case.8. The product according to claim 6 , wherein atleast one of the following oxides exhibits at most the fraction indicated in each case:CaO<5% by mass;{'sub': 2', '3, 'FeO<3.5% by mass;'}{'sub': 2', '3, 'AlO<3.0% by mass;'}relative to the ...

THERMISTOR ELEMENT AND ELECTROMAGNETIC WAVE SENSOR

A thermistor element includes: a thermistor film; a first electrode provided in contact with one surface of the thermistor film; and a pair of second electrodes provided in contact with an other surface of the thermistor film, wherein the thermistor film is provided to cover a periphery of the first electrode. 1. A thermistor element comprising:a thermistor film;a first electrode provided in contact with one surface of the thermistor film; anda pair of second electrodes provided in contact with an other surface of the thermistor film, whereinthe thermistor film is provided to cover a periphery of the first electrode.2. The thermistor element according to claim 1 , wherein each of regions where the pair of the second electrodes contacts the thermistor film locates in a region where the first electrode contacts the thermistor film in a plan view.3. The thermistor element according to claim 1 , whereineach of the second electrodes has a structure in which a first conductive layer and a second conductive layer are laminated on the other surface of the thermistor film in this order,the first conductive layer is made of an alloy containing one or more selected from: platinum, gold, palladium, ruthenium, silver, rhodium, iridium, and osmium, the second conductive layer is made of at least one selected from: aluminum, tungsten, titanium, tantalum, titanium nitride, tantalum nitride, chromium nitride, and zirconium nitride.4. The thermistor element according to claim 2 , whereineach of the second electrodes has a structure in which a first conductive layer and a second conductive layer are laminated on the other surface of the thermistor film in this order,the first conductive layer is made of an alloy containing one or more selected from: platinum, gold, palladium, ruthenium, silver, rhodium, iridium, and osmium,the second conductive layer is made of at least one selected from: aluminum, tungsten, titanium, tantalum, titanium nitride, tantalum nitride, chromium nitride, and ...

FIREPROOF PRODUCT CONTAINING GRAPHITE, METHOD FOR PRODUCING SAID PRODUCT, AND USE OF SAID PRODUCT

A molded, fireproof product, which contains graphite, in particular natural graphite, and is based on fireproof granular materials. The granular-material grains of the product are consolidated to form a molded body by means of a binder known per se and/or ceramic bonding. The product has a homogeneous mixture of at least two graphite types, which each have a different coefficient of thermal expansion. One graphite type is predominant by amount and the other graphite type acts as an auxiliary graphite type. The invention further relates to a method for producing a product and to the use of the product. 1. Molded fireproof product containing graphite , particularly containing natural graphite , on the basis of fireproof material granulates , the granulate grains of which are solidified to form a molded body using known binders and/or ceramic binding ,whereinthe product has a homogeneous mixture of at least two graphite types, each having a different thermal expansion coefficient, wherein one graphite type predominates, in terms of amount, and the other graphite type functions as an added graphite type.2. Product according to claim 1 ,whereinthe graphite types differ in a form factor FF, which correlates with their thermal expansion coefficients, wherein the form factor FF results, in each instance, from a division of a screening machine width in μm, through which a specific percentage amount x of graphite flakes of this graphite type passes (dx value), by a thickness c of flakes of the graphite type that are visible in a REM image, the thickness being determined optically from at least one REM image and averaged arithmetically, wherein a small form factor FF correlates with a high thermal expansion coefficient and a greater form factor FF correlates with a smaller thermal expansion coefficient.3. Product according to claim 2 ,whereinthe form factor FF of suitable natural graphite types lies between 5 and 200, particularly between 10 and 100.4. Product according to ...

METHOD FOR SYNTHESIZING CERAMIC COMPOSITE POWDER AND CERAMIC COMPOSITE POWDER

The embodiments of the present invention disclose a method for synthesizing ceramic composite powder and ceramic composite powder, pertaining to the technical field of inorganic non-metallic materials. Among them, the method includes preparing an aqueous slurry of ceramic raw materials, the aqueous slurry including ceramic raw material, water and low polymerization degree organometallic copolymer, the ceramic raw material including at least two components; adding a crosslinking coagulant into the aqueous slurry to obtain a gel; dehydrating and drying the gel to obtain the dried gel; heating the dried gel to the synthesizing temperature of the ceramic composite powder and conducting the heat preservation to obtain ceramic composite powder or ceramic composite base powder; conducting secondary doping on ceramic composite base powder to obtain the ceramic composite powder. The multi-component ceramic composite powder prepared by the embodiments of the present invention has uniformly dispersed each component and low synthesizing temperature. 1. A method for synthesizing ceramic composite powder , comprising:preparing an aqueous slurry of ceramic raw materials, the aqueous slurry comprising ceramic raw material, water and low polymerization degree organometallic copolymer, the ceramic raw material comprising at least two components;adding a crosslinking coagulant into the aqueous slurry to obtain a gel;dehydrating and drying the gel to obtain the dried gel;heating the dried gel to the synthesizing temperature of the ceramic composite powder and conducting the heat preservation to obtain ceramic composite powder or ceramic composite base powder;conducting secondary doping on ceramic composite base powder to obtain the ceramic composite powder.2. The synthesizing method according to claim 1 , wherein the ceramic raw material comprises carbonate claim 1 , oxalate claim 1 , acetate claim 1 , hydroxide claim 1 , oxide and/or minor additive elements claim 1 , the minor ...

SINTERED CERAMIC COMPONENT AND A PROCESS OF FORMING THE SAME

A sintered ceramic component can have a final composition including at least 50 wt. % MgO and at least one desired dopant, wherein each dopant of the at least one desired dopant has a desired dopant content of at least 0.1 wt. %. All impurities (not including the desired dopant(s)) are present at a combined impurity content of less than 0.7 wt. %. A remainder can include AlO. The selection of dopants can allow for better control over the visual appearance of the sintered ceramic component, reduces the presence of undesired impurities that may adversely affect another part of an apparatus, or both. The addition of the dopant(s) can help to improve the sintering characteristics and density as compared to a sintered ceramic component that includes the material with no dopant and a relatively low impurity content. 1. A sintered ceramic component having a final composition comprising:at least 50 wt. % MgO;at least one desired dopant, wherein each dopant of the at least one desired dopant has a desired dopant content of at least 0.1 wt. %;all impurities are present at a combined impurity content of less than 0.7 wt. %; and{'sub': 2', '3, 'a remainder comprising AlO.'}2. The sintered ceramic component of claim 1 , wherein the at least one desired dopant includes CaO.3. The sintered ceramic component of claim 2 , wherein the CaO content is at least 0.2 wt. %.4. The sintered ceramic component of claim 1 , wherein the at least one desired dopant includes YO.5. The sintered ceramic component of claim 4 , wherein the YOcontent is no greater than 3 wt. %.6. The sintered ceramic component of claim 1 , wherein the at least one desired dopant includes TiO.7. The sintered ceramic component of claim 6 , wherein the TiOcontent is no greater than 3 wt. %8. The sintered ceramic component of claim 1 , wherein the at least one dopant includes a first dopant and a second dopant.9. The sintered ceramic component of claim 1 , wherein MgO has a content that is in a range of 51 wt. % to 80 wt. ...

MULTILAYER CERAMIC ELECTRONIC COMPONENT, AND METHOD OF MANUFACTURING MULTILAYER CERAMIC ELECTRONIC COMPONENT

A multilayer ceramic electronic component includes a component body, a first external electrode provided on a first end surface of the component body, and a second external electrode provided on a second end surface of the component body. An absolute value of a difference between a surface roughness of a first side surface and a surface roughness of a second side surface of the component body is smaller than an absolute value of a difference between a surface roughness of a first main surface and a surface roughness of a second main surface. 1. A multilayer ceramic electronic component comprising:a component body including a plurality of ceramic layers laminated in a lamination direction and a plurality of pairs of first internal electrodes and second internal electrodes, the component body including a first main surface and a second main surface facing each other in the lamination direction, a first side surface and a second side surface facing each other in a width direction orthogonal or substantially orthogonal to the lamination direction, and a first end surface and a second end surface facing each other in a length direction orthogonal or substantially orthogonal to the lamination direction and the width direction;a first external electrode provided on the first end surface of the component body, and connected to the first internal electrodes at the first end surface; anda second external electrode provided on the second end surface of the component body, and connected to the second internal electrodes at the second end surface; wherein{'sub': S1', 'S2', 'S1', 'S2', 'M1', 'M2', 'M1', 'M2, 'an absolute value |Ra−Ra| of a difference between a surface roughness Raof the first side surface and a surface roughness Raof the second side surface of the component body is smaller than an absolute value |Ra−Ra| of a difference between a surface roughness Raof the first main surface and a surface roughness Raof the second main surface.'}2. The multilayer ceramic ...

OXIDE SINTERED BODY, SPUTTERING TARGET, AND OXIDE SEMICONDUCTOR THIN FILM OBTAINED USING SPUTTERING TARGET

Provided are an oxide sintered compact whereby low carrier density and high carrier mobility are obtained when the oxide sintered compact is used to obtain an oxide semiconductor thin film by a sputtering method, and a sputtering target which uses the oxide sintered compact. This oxide sintered compact contains, as an oxide, one or more positive divalent elements selected from the group consisting of indium, gallium, nickel, cobalt, calcium, strontium, and lead. The gallium content is less than 0.08 to 0.20 in terms of Ga/(In+Ga) atomic ratio, and the positive dyad (M) content is 0.0001 to 0.05 in terms of M/(In+Ga+M) atomic ratio. In a crystalline oxide semiconductor thin film formed using the oxide sintered compact as a sputtering target, the carrier density is less than 1×10cm, and the carrier mobility is at least 10 cmVsec. 1. An oxide sintered body comprising indium , gallium , and a positive divalent element as oxides , whereinthe gallium content is 0.08 or more and less than 0.20 in terms of Ga/(In+Ga) atomic ratio,the total content of all the positive divalent elements is 0.0001 or more and 0.05 or less in terms of M/(In+Ga+M) atomic ratio,the positive divalent element is one or more selected from the group consisting of nickel, cobalt, calcium, strontium, and lead,the oxide sintered body includes;{'sub': 2', '3, 'an InOphase having a bixbyite-type structure;'}{'sub': 3', '2', '3', '2', '3', '3', '2', '3', '2', '3', '2', '3, 'and a GaInOphase having a β-GaO-type structure as a formed phase other than the InOphase, or a GaInOphase having a β-GaO-type structure and a (Ga, In)Ophase as a formed phase other than the InOphase;'}{'sub': 2', '4', '2', '4', '4', '7', '5', '6', '14', '12', '19', '2', '4', '3', '2', '6', '2', '4, 'and the oxide sintered body is substantially free of a NiGaOphase, a CoGaOphase, a CaGaOphase, a CaGaOphase, a SrGaOphase, a SrGaOphase, a SrGaOphase, and a GaPbOphase, which are a complex oxide composed of the positive divalent element and ...

METHOD FOR THE TREATMENT OF MAGNESIA-CARBON PRODUCTS

The invention relates to a method for treating magnesia-carbon products. 1. A method for the treatment of magnesia-carbon products , comprising the following method steps: A.1 the magnesia-carbon products comprise magnesia and carbon;', {'sub': 4', '3, 'A.2 the magnesia-carbon products comprise proportions of AlC;'}], 'A. providing magnesia-carbon products comprising the following featuresB. providing water; C.1 the gas comprises carbon dioxide;', 'C.2 the proportion of carbon dioxide in the gas is above the proportion of carbon dioxide in the air;, 'C. providing a gas comprising the following featuresD. providing a container that encloses a space;E. providing the magnesia carbon products in the space; F.1 temperature; and', 'F.2 pressure', 'while providing the water and the gas in the space., 'F. subjecting the space to'}2. The method of claim 1 , wherein the magnesia-carbon products are used magnesia-carbon products.3. The method according to claim 1 , wherein the magnesia-carbon products and the water are provided in the space in such proportions that in the space the molar ratio of water to AlCis at least 8 to 1.4. The method according to claim 1 , wherein the gas and the water are provided in such proportions in the space that in the space the molar ratio of carbon dioxide to water is at least 1 to 1.5. The method according to claim 1 , wherein the space is subjected to temperature in the range of 100 to 320° C.6. The method according to claim 1 , wherein the space is subjected to pressure in the range of 0.1 to 6 MPa.7. The method according to claim 1 , wherein the gas is carbon dioxide gas.8. The method according to claim 1 , wherein the space enclosed by the container is sealed gas-tight after providing the magnesia-carbon products in the space.9. The method according to claim 1 , wherein the container is an autoclave.10. The method according to claim 1 , wherein the magnesia-carbon products comprise an AlCcontent of at least 0.1% by mass claim 1 , based on ...

Ceramic Material, Component, and Method for Producing the Component

A ceramic material, a component, and a method for producing a component are disclosed. In an embodiment a ceramic material includes a structure based on a system selected from the group consisting of Ni—Co—Mn—O, Ni—Mn—O and Co—Mn—O, and at least one dopant selected from lanthanides, wherein the ceramic material has a negative temperature coefficient of an electrical resistance.

METHOD OF MANUFACTURING AN ARTICLE FROM POWDER MATERIAL AND AN APPARATUS FOR MANUFACTURING AN ARTICLE FROM POWDER MATERIAL

An apparatus for manufacturing an article from powder material includes a canister, a sorter, a plurality of hoppers and at least one valve. The canister has a predetermined internal shape to define the shape of the powder metal article. The sorter sorts the powder material by the size of the powder particles, the shape of the powder particles and/or the flow characteristics of the powder particles. The hoppers contain powder material with different sizes of powder particles, different shapes of powder particles and/or powder particles with different flow characteristics. The hoppers are arranged to supply the sorted powder material to the canister. The at least one valve controls the proportions of the different powder materials supplied from the one or more of the different hoppers into the canister to control the packing density of the powder material in the canister at all positions in the canister. 1. A method of manufacturing an article from powder material comprising ,a) sorting the powder material by the size of the powder particles, the shape of the powder particles and/or the flow characteristics of the powder particles,b) storing the sorted powder material in different hoppers,c) providing a canister having a predetermined internal shape to define the shape of the powder material article, the canister having at least one region which is more difficult to fill than other regions,d) supplying the powder material from one or more of the different hoppers into the canister to fill the canister,e) controlling the proportions of the powder material supplied from the one or more of the different hoppers into the canister to control the voidage in the powder material in the canister at all positions in the canister, supplying powder material from at least one hopper containing powder particles having a relatively small size, a regular shape and/or good flow characteristics to the canister to fill the at least one region of the canister which is more difficult to ...

SILICON NITRIDE SUBSTRATE AND SILICON NITRIDE CIRCUIT BOARD USING THE SAME

A silicon nitride substrate including silicon nitride crystal grains and a grain boundary phase and having a thermal conductivity of 50 W/m·K or more, wherein, in a sectional structure of the silicon nitride substrate, a ratio (T2/T1) of a total length T2 of the grain boundary phase in a thickness direction with respect to a thickness T1 of the silicon nitride substrate is 0.01 to 0.30, and a variation from a dielectric strength mean value when measured by a four-terminal method in which electrodes are brought into contact with a front and a rear surfaces of the substrate is 20% or less. The dielectric strength mean value of the silicon nitride substrate can be 15 kV/rum or more. According to above structure, there can be obtained a silicon nitride substrate and a silicon nitride circuit board using the substrate in which variation in the dielectric strength is decreased. 12121. A silicon nitride substrate comprising silicon nitride crystal grains and a grain boundary phase and having a thermal conductivity of 50 W/m·K or more , wherein , in a sectional structure of the silicon nitride substrate , a ratio , T/T , of a total length T of the grain boundary phase in a thickness direction with respect to a thickness T of the silicon nitride substrate is 0.01 to 0.30 , an average grain diameter with respect to a long diameter of the silicon nitride crystal grains is between 1.5 and 10 μm , and a variation from a dielectric strength mean value when measured by a four-terminal method in which electrodes are brought into contact with front and rear surfaces of the substrate is 20% or less;wherein the dielectric strength mean value is 15 kV/mm or more; and{'sup': '12', 'wherein a volume resistivity value when a voltage of 1000 V is applied at 25° C. is 60×10Ωm or more.'}2. The silicon nitride substrate according to claim 1 , wherein a variation in the dielectric strength is 15% or less.3. The silicon nitride substrate according to claim 1 , wherein a ratio claim 1 , ρv2/ρv1 ...

Alumina Composite Ceramic Composition and Method of Manufacturing the Same

Provided is an alumina composite ceramic composition which has electrical insulation properties as well as better mechanical strength and thermal conductivity than a typical alumina-based material. Thus, the alumina composite ceramic composition is promising for a material of a substrate or an insulating package of an electronic device. The alumina composite ceramic composition of the present invention may include alumina (AlO), zirconia (ZrO) or yttria-stabilized zirconia as a first additive, and graphene oxide and carbon nanotubes, as a second additive. In this case, in consideration of two aspects of sinterability and electrical resistivity characteristics of the alumina composite ceramic composition, the graphene oxide may be appropriately adjusted to be in the form of a graphene oxide phase and a reduced graphene phase which coexist in the alumina composite ceramic composition. 1. An alumina composite ceramic composition comprising:{'sub': 2', '3, 'alumina (AlO);'}{'sub': '2', 'zirconia (ZrO) or yttria-stabilized zirconia as a first additive; and'}graphene oxide and carbon nanotubes, as a second additive.2. The alumina composite ceramic composition of claim 1 , wherein an amount of the first additive is 30 wt % or less based on a weight of the alumina.3. The alumina composite ceramic composition of claim 1 , wherein an amount of the second additive is 2.0 wt % or less based on a total weight of the alumina and the first additive.4. The alumina composite ceramic composition of claim 2 , wherein the amount of the first additive is 10 wt % or more based on the weight of the alumina.5. The alumina composite ceramic composition of claim 3 , wherein the amount of the second additive is 0.5 wt % or more based on the total weight of the alumina and the first additive.6. The alumina composite ceramic composition of claim 1 , wherein the graphene oxide is in a form of a graphene oxide phase and a reduced graphene phase which coexist in the alumina composite ceramic ...

CERAMIC PARTICLES FOR USE IN A SOLAR POWER TOWER

Ceramic particles for use in a solar power tower and methods for making and using the ceramic particles are disclosed. The ceramic particle can include a sintered ceramic material formed from a mixture of a ceramic raw material and a darkening component comprising MnO as Mn. The ceramic particle can have a size from about 8 mesh to about 170 mesh and a density of less than 4 g/cc. 1. A ceramic particle for use in a solar power tower , comprising:a sintered ceramic material formed from a mixture comprising a ceramic raw material and manganese oxide, the ceramic particle having a size from about 8 mesh to about 170 mesh and a density of less than 4 g/cc.2. The ceramic particle of claim 1 , wherein the ceramic raw material comprises one or more of alumina claim 1 , silica claim 1 , zirconia claim 1 , zinc oxide claim 1 , silicon nitride claim 1 , silicon carbide claim 1 , fly ash claim 1 , kaolin claim 1 , or bauxite.3. The ceramic particle of claim 1 , wherein the mixture further comprises FeO.4. The ceramic particle of claim 1 , wherein the ceramic particle has a surface roughness of less than 5 μm.5. The ceramic particle of claim 1 , wherein the manganese oxide is selected from the group consisting of MnO claim 1 , MnO claim 1 , and MnOand any mixture thereof.6. The ceramic particle of claim 5 , wherein exposure of the ceramic particle to solar heat energy in the solar power tower reduces a Munsell Value of the ceramic particle by at least about 0.1.7. A solar power tower comprising the ceramic particle of .8. A method of manufacturing ceramic particles claim 1 , comprising:preparing a slurry comprising water, a binder, a ceramic raw material, and manganese oxide;atomizing the slurry into droplets;coating seeds comprising the ceramic raw material with the droplets to form a plurality of green pellets; and{'sub': 2', '3, 'sintering the green pellets to provide a plurality of ceramic particles, wherein the sintering oxidizes a first portion of the manganese oxide from ...

SINTERED BALL

The present invention relates to sintered balls comprising tungsten carbide (WC) and partially stabilized zirconium oxide, nX:ZrO, and to powder mixtures and green bodies for the production thereof, and to methods for the production of the green bodies and the sintered balls. The sintered balls have high densities, high wear resistance and a long service life. 1. A sintered ball comprising tungsten carbide , (WC) and partially stabilized zirconium oxide (nX:ZrO) wherein the proportion of WC in the material composition is from 1 to 60% by volume of the WC and nX:ZrOand the proportion of nX:ZrOin the material composition is from 99 to 40% by volume of the WC and nX:ZrO.2. The sintered ball of claim 1 , wherein the tungsten carbide has been passivated by contact with at least one organic additive.3. The sintered ball of claim 1 , wherein the zirconium oxide has been partially stabilized by a metal oxide X selected from among rare earth oxides claim 1 , calcium oxide and magnesium oxide.4. The sintered ball of claim 1 , wherein the proportion by weight of X in the nX:ZrO claim 1 , calculated from the mole fraction n with the aid of the molar mass of the respective compound claim 1 , is from 2 to 25.0% by weight of the nX:ZrO.5. The sintered ball of claim 1 , wherein the zirconium oxide further comprises one or more further elements M.6. The sintered ball of claim 5 , wherein the content of the one or more further elements M is from 0 to 2% by weight of the nX:ZrO.7. The sintered ball of claim 1 , wherein the sintered ball has been admixed with a sintering aid.8. The sintered ball of claim 1 , wherein the sintered ball has a diameter of from 0.05 mm to 3 mm.9. A powder mixture produced from a material composition comprising tungsten carbide claim 1 , (WC) and partially stabilized zirconium oxide (nX:ZrO) by a spray drying process claim 1 , a freeze drying process claim 1 , a freeze granulation process claim 1 , or a dispersing process claim 1 , wherein the proportion of ...

CERAMIC PARTICLE AND METHOD FOR PRODUCING THE SAME

A ceramic particle includes a core and a modification layer. The core is made of magnesium or a magnesium alloy. The core has a diameter of 30-100 μm. The modification layer covers an outer surface of the core. The modification layer includes calcium and phosphorus. A method for producing a ceramic particle includes providing a core made of magnesium or a magnesium alloy and having a diameter of 30-100 μm. A calcium salt and a phosphorus salt are dissolved in a solvent. A chelating agent is added into the solvent to form a modifying solution. The core is added into the modifying solution to form a modification layer on an outer surface of the core in a temperature range of 5-40° C. The modification layer includes calcium and phosphorus. 1. A ceramic particle comprising:a core made of magnesium or a magnesium alloy, wherein the core has a diameter of 30-100 μm; anda modification layer covering an outer surface of the core, wherein the modification layer includes calcium and phosphorus.2. The ceramic particle as claimed in claim 1 , wherein the modification layer has a thickness of 0.1-5 μm.3. The ceramic particle as claimed in claim 1 , wherein a mole ratio of calcium to phosphorus in the modification layer is in a range of 1.0-1.8.4. The ceramic particle as claimed in claim 3 , wherein the modification layer is formed of calcium monohydrogen phosphate claim 3 , hydroxyapatite claim 3 , or tricalcium diphosphate.5. A method for producing a ceramic particle claim 3 , comprising:providing a core made of magnesium or a magnesium alloy, wherein the core has a diameter of 30-100 μm;dissolving a calcium salt and a phosphorus salt in a solvent, and adding a chelating agent into the solvent to form a modifying solution; andadding the core into the modifying solution to form a modification layer on an outer surface of the core in a temperature range of 5-40° C., wherein the modification layer includes calcium and phosphorus.6. The method for producing the ceramic particle as ...

High Energy Materials for a Battery and Methods for Making and Use

A composition for forming an electrode. The composition includes a metal fluoride, such as copper fluoride, and a matrix material. The matrix material adds capacity to the electrode. The copper fluoride compound is characterized by a first voltage range in which the copper fluoride compound is electrochemically active and the matrix material characterized by a second voltage range in which the matrix material is electrochemically active and substantially stable. A method for forming the composition is included. 1. A composition for forming a cathode for use in a battery , comprising:a copper fluoride compound characterized by a first voltage range in which the copper fluoride compound is electrochemically active; anda matrix material characterized by a second voltage range in which the matrix material is electrochemically active and substantially stable;wherein the second voltage range overlaps at least 35% of the first voltage range.2. The composition of wherein the second voltage range overlaps at least 40% of the first voltage range.3. The composition of wherein the second voltage range overlaps at least 45% of the first voltage range.4. The composition of wherein the second voltage range overlaps at least 50% of the first voltage range.5. The composition of wherein the matrix material comprises lithium.6. The composition of wherein the matrix material comprises LiFePO.7. The composition of wherein the matrix material comprises an NMC material.8. The composition of wherein the matrix material adds specific capacity to the composition as compared to a composition without the matrix material.9. A method of making a composition for use in a cathode for a battery claim 1 , comprising:mixing a copper fluoride compound characterized by a first voltage range in which the copper fluoride compound is electrochemically active with a matrix material characterized by a second voltage range in which the matrix material is electrochemically active and substantially stable, ...

CERAMIC DEVICE AND MANUFACTURING METHOD THEREOF

A ceramic device including a ceramic material, a patterned metal structure, and a surface activation material is provided. A surface of the ceramic material at least includes a first surface and a second surface that are not coplanar. The ceramic material has recesses on the surface thereof. The patterned metal structure is disposed on the first surface and the second surface. The surface activation material is disposed on a surface of the recesses and located at an interface between the ceramic material and the patterned metal structure. 1. A ceramic device , comprising:a ceramic material, wherein a surface of the ceramic material at least comprises a first surface and a second surface that are not coplanar, and the ceramic material has recesses on the surface thereof;a patterned metal structure disposed on the first surface and the second surface; anda surface activation material disposed on a surface of the recesses and located at an interface between the ceramic material and the patterned metal structure.2. The ceramic device of claim 1 , wherein the ceramic material comprises calcium titanate (CaTiO) claim 1 , magnesium titanate (MgTiO) claim 1 , zinc titanate (ZnTiO) claim 1 , or a combination thereof.3. The ceramic device of claim 1 , wherein the first surface and the second surface are adjacent or not adjacent to each other.4. The ceramic device of claim 1 , wherein a surface roughness resulting from the recesses on the ceramic material is less than 5 microns.5. The ceramic device of claim 1 , wherein the ceramic material has at least one through-hole claim 1 , and a portion of the patterned metal structure is disposed on a surface of the at least one through-hole.6. The ceramic device of claim 5 , wherein an aspect ratio of the at least one through-hole is 12 or less.7. The ceramic device of claim 1 , wherein the patterned metal structure comprises a first patterned metal layer.8. The ceramic device of claim 7 , wherein a material of the first patterned ...

METHOD OF PRODUCING A NTCR SENSOR

The present invention relates to a method of producing a negative temperature coefficient resistor (NTCR) sensor, the method comprising the steps of: providing a mixture comprising uncalcined powder and a carrier gas in an aerosol-producing unit, with the uncalcined powder comprising metal oxide components; forming an aerosol from said mixture and said carrier gas and accelerating said aerosol in a vacuum towards a substrate arranged in a deposition chamber; forming a film of the uncalcined powder of said mixture on said substrate; and transforming the film into a layer of spinel-based material by applying a heat treatment step. 1. A method of producing a negative temperature coefficient resistor (NTCR) sensor , the method comprising:providing a mixture comprising uncalcined powder and providing a carrier gas in an aerosol-producing unit, the uncalcined powder comprising metal oxide components;forming an aerosol from the mixture and the carrier gas and accelerating the aerosol in a vacuum towards a substrate arranged in a deposition chamber;forming a film of the uncalcined powder of the mixture on the substrate; andtransforming the film into a layer of spinel-based material by applying a heat treatment step.2. A method in accordance with claim 1 ,wherein the heat treatment step is applied at a temperature below 1000° C.3. A method in accordance with claim 1 , wherein the heat treatment step takes place in an atmosphere claim 1 , wherein said atmosphere has a controlled partial oxygen pressure.4. A method in accordance with claim 1 ,wherein the carrier gas is selected from the group consisting of oxygen, nitrogen, a noble gas, and combinations thereof.5. A method in accordance with claim 1 ,wherein the uncalcined powder comprises particle sizes in the range of 50 nm to 10 μm.6. A method in accordance with claim 1 ,wherein the layer of spinel-based material comprises a spinel composed of two or more cations from the group consisting of Mn, Ni, Co, Cu, Fe, Cr, Al, Mg, ...

MULTI-PHASE INFRARED TRANSPARENT CERAMIC MATERIAL

Various embodiments disclosed relate to an optical window including an infrared light transmissive optical material. The optical material includes a first ceramic phase including a first ceramic material and a first dopant distributed therein. The optical material further includes a second ceramic phase homogenously intermixed with the first ceramic phase and comprising a second ceramic material and a second dopant distributed therein. The first dopant increases the refractive index of the first ceramic material and the second dopant decreases the refractive index of the second ceramic material. The first dopant and the second dopant are present in an amount such that a difference in a refractive index of the first ceramic phase and of the second ceramic phase is in a range of from about 0.001 to about 0.2. 1. An optical window comprising: a first ceramic phase comprising a first ceramic material and a first dopant distributed therein; and', 'a second ceramic phase homogenously intermixed with the first ceramic phase and comprising a second ceramic material and a second dopant distributed therein;, 'an infrared light transmissive optical material, comprising the first dopant increases the refractive index of the first ceramic material, relative to a refractive index of a corresponding first ceramic material that is free of the first dopant and the second dopant decreases the refractive index of the second ceramic material, relative to a refractive index of a corresponding second ceramic material that is free of the second dopant, and', 'the first dopant and the second dopant are present in an amount such that a difference in a refractive index of the first ceramic phase and of the second ceramic phase is in a range of from about 0.001 to about 0.2., 'wherein'}2. The optical window of claim 1 , wherein the first ceramic material comprises yttria and the second ceramic material comprises magnesia and the first ceramic phase and the second ceramic phase are ...

HEXAGONAL FERRITE MAGNETIC POWDER

Provided is a hexagonal ferrite magnetic powder for a magnetic recording medium, containing hexagonal ferrite magnetic particles having aluminum hydroxide adhered on the surface thereof, the hexagonal ferrite magnetic powder having an Al/Fe molar ratio of 0.030 to 0.200, a Co/Fe molar ratio of 0.002 to 0.030, and a Nb/Fe molar ratio of 0.005 to 0.050, and having an Fe site valence Aof 3.015 to 3.040 as calculated by A=(3+2×[Co/Fe]+5×[Nb/Fe])/(1+[Co/Fe]+[Nb/Fe]) wherein [Co/Fe] represents the Co/Fe molar ratio and [Nb/Fe] represents the Nb/Fe molar ratio, and preferably having an activation volume Vact of 1400 to 1800 nm. This magnetic powder simultaneously achieves an increase in magnetic characteristics including SNR of a magnetic recording medium and a further increase in durability thereof. 2. The hexagonal ferrite magnetic powder for a magnetic recording medium according to claim 1 , wherein the hexagonal ferrite magnetic powder has an activation volume Vact of 1400 to 1800 nm. The present invention relates to M-type hexagonal ferrite magnetic powder for a magnetic recording medium.Hexagonal ferrite magnetic powder is known as magnetic powder suitable for high density recording for use in a magnetic recording medium, such as magnetic tape. Important performance characteristics of magnetic recording media include high SNR (S/N ratio) and high durability during running in a drive, in addition to high recording density.Patent Document 1 discloses a technique for simultaneously improving SNR and durability of a magnetic recording medium by applying a hexagonal ferrite magnetic powder that has a rare earth element and Bi incorporated therein and that has aluminum hydroxide adhered on the particle surface thereof.With recent increasing application of digital data, a magnetic recording medium which plays a role of storing enormous data is desired to be further improved in both the magnetic characteristics and the durability.Recording and reproduction of information ...

LIGHT ABSORBING MEMBER, MEMBER FOR HYDROGEN PRODUCTION, AND HYDROGEN PRODUCTION APPARATUS

A light absorbing member includes a ceramic composite having a plurality of first ceramic particles exhibiting positive resistance temperature characteristics in a first ceramics having an open porosity of 5% or lower. 1. A light absorbing member comprising:a ceramic composite having a plurality of first ceramic particles exhibiting positive resistance temperature characteristics in a first ceramic having an open porosity of 5% or lower.2. The light absorbing member according to claim 1 ,{'sub': '3', 'wherein the first ceramic particles are a perovskite type composite oxide represented as ABO.'}3. The light absorbing member according to claim 2 ,{'sub': 3', '3, 'wherein the first ceramic particles comprise La as an element of an A site of the ABOand comprises Mn as an element of a B site of the ABO.'}4. The light absorbing member according to claim 1 ,wherein a luminance of color of the first ceramic is 5 or higher in luminance indication classified by the Munsell color system.5. A member for hydrogen production comprising:a hydrogen generating part comprising a porous ceramic composite comprising second ceramic particles in a porous second ceramic; anda light absorbing part,{'claim-ref': [{'@idref': 'CLM-00001', 'claim 1'}, {'@idref': 'CLM-00001', 'claim 1'}], 'wherein the light absorbing part comprises a first light absorbing member according to the light absorbing member according to and a second light absorbing member according to the light absorbing member according to .'}6. The member for hydrogen production according to claim 5 ,wherein the first ceramic particles and the second ceramic particles have an average particle diameter of 5 nm to 200 nm.7. The member for hydrogen production according to claim 5 ,{'sub': '3±δ', 'wherein the second ceramic particles are selected from the group consisting of AXO (where 0≤δ≤1, A: at least one of rare earth elements, alkaline earth elements, and alkali metal elements, X: at least one of transition metal elements and ...

CERAMIC MATERIAL AND SPUTTERING TARGET MEMBER

The present invention provides a ceramic material comprising magnesium, gallium, lithium, and oxygen as main components, wherein a crystal phase of a solid solution attained by dissolving gallium oxide and lithium oxide in magnesium oxide is a main phase. An XRD peak of a (200) plane of the solid solution with CuKα rays preferably appears at 2θ=42.91° or more which is larger than an angle at which a peak of a Cubic crystal of magnesium oxide appears, more preferably appears at 2θ=42.91° to 43.28°, and further preferably appears at 2θ=42.91° to 43.02°. In the ceramic material, a molar ratio Li/Ga of Li to Ga is preferably 0.80 or more and 1.20 or less. 1. A ceramic material comprising magnesium , gallium , lithium , and oxygen as main components , wherein a crystal phase of a solid solution obtained by dissolving gallium oxide and lithium oxide in magnesium oxide is a main phase.2. The ceramic material according to claim 1 , wherein an XRD peak of a (200) plane of the solid solution measured with CuKα rays appears at 2θ=42.91° or more which is larger than an angle at which a peak of a cubic crystal of magnesium oxide appears.3. The ceramic material according to claim 1 , wherein an XRD peak of a (200) plane of the solid solution measured with CuKα rays appears at 2θ=42.91° to 43.28°.4. The ceramic material according to claim 1 , wherein an XRD peak of a (200) plane of the solid solution measured with CuKα rays appears at 2θ=42.91° to 43.02°.5. The ceramic material according to claim 1 , wherein the ceramic material does not contain MgGaOas a minor phase.6. The ceramic material according to claim 1 , wherein a molar ratio Li/Ga of Li to Ga is 0.80 or more and 1.20 or less.7. The ceramic material according to claim 1 , wherein claim 1 , assuming that contents of compounds containing magnesium claim 1 , gallium claim 1 , and lithium claim 1 , the compounds being contained in a starting material claim 1 , are respectively calculated based on magnesium oxide (MgO) claim 1 ...

REFRACTORY BATCH, A METHOD FOR PRODUCING AN UNSHAPED REFRACTORY CERAMIC PRODUCT FROM THE BATCH AND AN UNSHAPED REFRACTORY CERAMIC PRODUCT OBTAINED BY THE METHOD

The invention relates to a refractory batch, to a method for producing an unshaped refractory ceramic product from the batch, and to an unshaped refractory ceramic product obtained by said method. 1. Refractory batch comprising the following components:1.1 a basic component comprising one or more raw materials based on magnesia;1.2 a carbon component comprising one or more carbon carriers;1.3 an aluminum component comprising one or more metallic aluminum carriers;1.4 an aqueous binder; and1.5 one or more sulfates with a solubility of at least 15 g per 100 g of water.2. The batch according to claim 1 , wherein the sulfates are one or more of the following sulfates: sodium sulfate claim 1 , iron sulfate claim 1 , lithium sulfate claim 1 , magnesium sulfate or aluminum sulfate.3. The batch according to claim 1 , wherein the basic component consists of at least 90% by mass of magnesia.4. The batch according to claim 1 , wherein the basic component consists of one or more of the following raw materials based on magnesia: sintered magnesia or fused magnesia.5. The batch according to claim 1 , wherein the basic component is present in a proportion of at least 75% by mass.6. The batch according to claim 1 , wherein the aluminum component consists of one or more of the following carriers of metallic aluminum: metallic aluminum or at least one metal alloy comprising aluminum.7. The batch according to claim 1 , wherein the one or more sulfates are present in a proportion in the range from 0.05 to 1.0% by mass.8. The batch according to claim 1 , wherein the aqueous binder is present in a proportion in the range from 4.0 to 15.0% by mass.9. Method for producing an unshaped refractory ceramic product claim 1 , comprising the following steps: a basic component comprising one or more raw materials based on magnesia;', 'a carbon component comprising one or more carbon carriers;', 'an aluminum component comprising one or more metallic aluminum carriers;', 'an aqueous binder; and', ' ...

REFRACTORY CERAMIC BATCH AS WELL AS A REFRACTORY CERAMIC PRODUCT

The invention concerns a refractory ceramic batch as well as a refractory ceramic product. 1. A refractory ceramic batch based on magnesia , having the following characteristics: magnesia,', 'plasticizer in an amount of less than 2% by weight, as well as', 'at least one phosphorus-comprising component;, 'the batch comprises the following components{'sub': 2', '2, 'the batch comprises proportions of CaO and if appropriate SiOwherein the mole fraction of CaO in the batch is more than twice the mole fraction of SiOin the batch.'}3. The batch as claimed in claim 1 , in which the phosphorus comprising component is present in such fractions by weight in the batch that phosphorus claim 1 , calculated as PO claim 1 , is present in the batch in the range from 0.1% to 5% claim 1 , with respect to the total weight of the batch.4. The batch as claimed in claim 1 , in which the fraction by weight of CaO is in the range 0.2% to 8% by weight with respect to the total weight of the batch.5. The batch as claimed in claim 1 , in which the fraction by weight of SiOis in the range 0.05% to 3% by weight with respect to the total weight of the batch.6. The batch as claimed in claim 1 , in which the fraction by weight of FeOwhich is not present in the batch in the form of a plasticizer is more than 3% by weight with respect to the total weight of the batch.7. The batch as claimed in claim 1 , in which the fraction by weight of magnesia is in the range 70% to 97% by weight with respect to the total weight of the batch.8. The batch as claimed in claim 1 , in which the fraction by weight of plasticizer is in the range 0.1% to less than 2% by weight with respect to the total weight of the batch.9. The batch as claimed in claim 1 , having plasticizers in the form of one or more of the following components: spinel claim 1 , hercynite claim 1 , galaxite or jacobsite.10. A shaped refractory ceramic product which is produced from a batch as claimed in at least one of the preceding claims claim 1 , ...

CALCIUM ENRICHED REFRACTORY MATERIAL BY THE ADDITION OF CALCIUM CARBONATE

The composition applied to the refractory structure has a magnesia-based refractory material, calcia source and a binder. After application of the refractory material to a refractory structure and upon application of heat to the applied refractory material a matrix is formed which protects against penetration of the slag into the refractory material. The resulting refractory material has improved hot strength, slag resistance and durability. 1. A composition suitable for providing a refractory material having a high density matrix comprising: 20 to 95 weight percent magnesia-based refractory material; 0.1 to 5.0 weight percent of a binder; and 2.0 to 10 weight percent of calcium carbonate for reacting upon exposure to heat to provide the refractory material having a high density matrix and provide reactive calcium oxide for improved corrosion resistance.2. The composition according to wherein the binder is selected from the group consisting of an organic acid claim 1 , an alkali silicate and an alkali phosphate.3. The composition according to wherein the magnesia-based refractory material is present in an amount of 60 to 88 weight percent.4. The composition according to further comprising calcium hydroxide in amount of 0.2 to 8.0 weight percent.5. The composition according to further comprising a plasticizer in an amount of 0.1 to 2.0 weight percent.6. The composition according to wherein the plasticizer is bentonite.7. The composition according to further comprising a dispersant in an amount of from 0.1 to 1.0 weight percent.8. The composition according to wherein the dispersant is citric acid.9. The composition according to wherein the binder is sodium hexametaphosphate wherein the sodium hexametaphosphate is present in an amount of 0.2 to 5.0 weight percent.10. The composition according to wherein the binder is sulfamic acid wherein the sulfamic acid is present in an amount of 0.2 to 3.0 weight percent.11. The composition according to wherein the calcium ...

ANTIOXIDANTS IN GREEN CERAMIC BODIES CONTAINING VARIOUS OILS FOR IMPROVED FIRING

Green ceramic mixture for extruding into an extruded green body includes one or more inorganic components selected from the group consisting of ceramic ingredients, inorganic ceramic-forming ingredients, and combinations thereof, at least one mineral oil, and from about 0.01 wt % to about 0.45 wt % of an antioxidant based on a total weight of the inorganic component(s), by super addition. The mineral oil has a kinematic viscosity of ≥about 1.9 cSt at 100° C. The at least one antioxidant may have a degradation-rate peak temperature that is greater than the degradation-rate peak temperature of the at least one mineral oil. In some embodiments, the at least one mineral oil includes greater than about 20 wt % alkanes with greater than 20 carbons, based on a total weight of the at least one mineral oil. Methods of making an unfired extruded body using the batch mixture are also disclosed. 1. A green ceramic mixture for extruding into an extruded green body , the green ceramic mixture comprising:one or more inorganic components selected from the group consisting of ceramic ingredients, inorganic ceramic-forming ingredients, and combinations thereof;at least one mineral oil having a kinematic viscosity of greater than about 1.9 cSt at 100° C.; andfrom about 0.01 wt % to about 0.45 wt % of an antioxidant based on a total weight of the inorganic components.2. The batch mixture of claim 1 , wherein the antioxidant is present in an amount from about 0.01 wt % to about 0.26 wt %.3. The batch mixture of claim 1 , wherein the antioxidant is a phenolic antioxidant.4. The batch mixture of claim 1 , wherein the antioxidant is a hindered phenolic antioxidant.5. The batch mixture of claim 1 , wherein a thermal degradation-rate peak temperature of the antioxidant is greater than a degradation-rate peak temperature of the at least one mineral oil.6. The batch mixture of claim 1 , further comprising an organic surfactant having a polar head.7. The batch mixture of claim 1 , wherein the ...

FERRITE COMPOSITION AND MULTILAYER ELECTRONIC COMPONENT

A ferrite composition includes a main component and a sub-component. The main component includes 10.0 to 38.0 mol % of a Fe compound in terms of FeO, 3.0 to 11.0 mol % of a Cu compound in terms of CuO, 39.0 to 80.0 mol % (excluding 39.0 mol %) of a Zn compound in terms of ZnO, and a balance of a Ni compound. The sub-component includes 10.0 to 23.0 parts by weight of a Si compound in terms of SiO, 0 to 3.0 parts by weight (including 0 parts by weight) of a Co compound in terms of CoO, and 0.1 to 3.0 parts by weight of a Bi compound in terms of BiOwith respect to 100 parts by weight of the main component. 1. A ferrite composition comprising a main component and a sub-component , wherein{'sub': 2', '3, 'the main component includes 10.0 to 38.0 mol % of a Fe compound in terms of FeO, 3.0 to 11.0 mol % of a Cu compound in terms of CuO, 39.0 to 80.0 mol % (excluding 39.0 mol %) of a Zn compound in terms of ZnO, and a balance of a Ni compound, and'}{'sub': 2', '3', '4', '2', '3, 'the sub-component includes 10.0 to 23.0 parts by weight of a Si compound in terms of SiO, 0 to 3.0 parts by weight (including 0 parts by weight) of a Co compound in terms of CoO, and 0.1 to 3.0 parts by weight of a Bi compound in terms of BiOwith respect to 100 parts by weight of the main component.'}2. The ferrite composition according to claim 1 , the sub-component includes 0.1 to 1.0 parts by weight of a Co compound in terms of CoO.3. The ferrite composition according to claim 1 , comprising a main phase composed of spinel ferrite claim 1 , a first sub-phase including a ZnSiOphase claim 1 , and a grain boundary phase including a SiOphase.4. The ferrite composition according to claim 3 , further comprising a second sub-phase composed of SiOphase.5. A multilayer electronic component comprising a coil conductor and ceramic layers claim 3 ,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein the ceramic layers are composed of the ferrite composition according to .'} The present invention ...

MAGNESIA CARBON BRICK AND PRODUCTION METHOD THEREFOR

Provided are a magnesia carbon brick which does not include graphite yet has excellent spalling and corrosion resistances, and a method for producing thereof. The brick is obtained by adding an organic binder to a refractory raw material mixture followed by kneading, molding, and heat-treating, wherein the mixture includes total 0.1 to 2.0 mass % of pitch and/or carbon black, total 0.1 to 1.0 mass % of aluminum and/or aluminum alloy, 3.0 to 10.0 mass % of magnesia having particle diameter of less than 0.075 mm, and 87.0 to 96.0 mass % of magnesia having particle diameter of 0.075 to 5 mm; and a mass ratio of magnesia having particle diameter of 1 to 5 mm to that of 0.075 to 1 mm is 1.66 to 2.34; graphite is not included therein; and an apparent porosity thereof after heat-treatment under reductive atmosphere at 1400° C. for 3 hours is 8.0% or less. 1. A magnesia carbon brick , the magnesia carbon brick being obtained by adding an organic binder to a refractory raw material mixture followed by kneading , molding , and heat-treating , whereinin the refractory raw material mixture, a pitch and/or a carbon black is included with a total amount of 0.1% or more by mass and 2.0% or less by mass, aluminum and/or aluminum alloy is included with a total amount of 0.1% or more by mass and 1.0% or less by mass, a magnesia having a particle diameter of less than 0.075 mm is included with an amount of 3.0% or more by mass and 10.0% or less by mass, and a magnesia having a particle diameter of 0.075 mm or more and less than 5 mm is included with an amount of 87.0% or more by mass and 96.0% or less by mass, but graphite is not included therein; and a mass ratio of a magnesia having a particle diameter of 1 mm or more and less than 5 mm to a magnesia having a particle diameter of 0.075 mm or more and less than 1 mm is 1.66 or more and 2.34 or less;and an apparent porosity thereof after having been subjected to a heat-treatment under a reductive atmosphere at 1400° C. for 3 hours is ...

FIRE-RESISTANT CERAMIC MIX AND FIRE RESISTANT CERAMIC PRODUCT

The invention concerns a refractory ceramic batch as well as a refractory ceramic product. 1. A refractory ceramic batch based on magnesia , having the following characteristics: 1.1.1 at least 70% by weight of magnesia,', 'wherein the at least one plasticizer comprises at least one of spinel, hercynite, galaxite or jacobsite, as well as', '1.1.2 at least one plasticizer'}, '1.1.3 at least one phosphorus-comprising component;, '1.1 the batch comprising{'sub': '2', 'claim-text': {'sub': '2', 'wherein the mole fraction of CaO in the batch is more than twice the mole fraction of SiOin the batch.'}, '1.2 wherein the batch comprises proportions of CaO and SiO'}3. The batch as claimed in claim 1 , in which the phosphorus comprising component is present in such fractions by weight in the batch that phosphorus claim 1 , calculated as PO claim 1 , is present in the batch in the range from 0.1% to 5% claim 1 , with respect to the total weight of the batch.4. The batch as claimed in claim 2 , in which the fraction by weight of CaO is in the range 0.2% to 8% by weight with respect to the total weight of the batch.5. The batch as claimed in claim 2 , in which the fraction by weight of SiOis in the range 0.05% to 3% by weight with respect to the total weight of the batch.6. The batch as claimed in claim 1 , in which the fraction by weight of FeOwhich is not present in the batch in the form of a plasticizer is more than 3% by weight with respect to the total weight of the batch.7. The batch as claimed in claim 1 , in which the fraction by weight of magnesia is in the range 70% to 97% by weight with respect to the total weight of the batch.8. The batch as claimed in claim 1 , in which the fraction by weight of plasticizer is in the range 2% to 30% by weight with respect to the total weight of the batch.9. A shaped refractory ceramic product which is produced from a batch as claimed in by ceramic firing and which comprises the following phases:magnesia,at least one mineral phase ...

PREPARATION METHOD OF SIC POROUS CERAMIC MATERIAL AND POROUS CERAMIC MATERIAL MANUFACTURED BY USING SAME

A preparation method of a SiC porous ceramic material and porous ceramic material manufactured by using the method, comprising: mixing a SiC aggregate, a sintering aid (zirconium oxide), a pore-forming agent (activated carbon) and a polymer binder with a reinforcing agent (SiC whiskers) according to a certain proportion, and obtaining a porous ceramic material via forming, drying and high-temperature sintering. The porous ceramic material has a high strength, a high porosity, a good thermal shock resistance and a low sintering temperature, and can server as a filter material of high-temperature flue gas and a carrier material in vehicle exhaust purification. 19-. (canceled)10. A method for preparing a whisker-reinforced SiC porous ceramic material , comprisingusing raw materials for preparing said ceramic material includinga large sized particle SiC aggregate,a sintering aid,a pore-forming agent,a type of macromolecular polymer for bonding, andanother type of macromolecular polymer used for reducing mold-release resistance,the method is characterized in that the raw materials also includes a SiC whisker as a reinforcing agent.11. The method described in is characterized in thatsaid sintering aid is zirconia,said pore-forming agent is activated carbon,said macromolecular polymer for bonding is polyvinyl alcohol (PVA), andsaid macromolecular polymer used for reducing the mold release resistance is liquid paraffin.12. The method described in comprisingpreparing SiC porous ceramic material, including(1) mixing a SiC aggregate, zirconia, activated carbon and SiC whiskers and then mechanically grounding the resulted mixture to obtain a mixed powder a;(2) adding PVA and liquid paraffin into the mixed powder a and mixing them evenly, and then making the mixture of PVA, liquid paraffin and mixed powder a into a first SiC porous ceramic green body through the dry pressing or extrusion method, and then dry the first green body in the oven to get green body b;(3) placing green ...

METHOD FOR IDENTIFYING PARKINSON DISEASE DEMENTIA FROM PARKINSON DISEASE

The present invention provides a method for clinically identifying Parkinson disease with normal cognition or Parkinson disease dementia in a subject. 2. The method of claim 1 , wherein material of the magnetic nanoparticles is selected from the group consisting of FeO claim 1 , FeO claim 1 , MnFeO claim 1 , CoFeOand NiFeO.3. The method of claim 1 , wherein material of the magnetic nanoparticles is FeO.4. The method of claim 1 , wherein the blood sample is plasma.5. The method of claim 1 , wherein the IMR signals of α-synuclein in the blood sample of the subject is detected by using a machine capable of detecting IMR signals.6. The method of claim 1 , further comprising a step claim 1 , after step (d) claim 1 , of administering an effective amount of drug for treating Parkinson disease with normal cognition or Parkinson disease dementia to the subject whose α-synuclein's concentration is detected higher than the cut-off value 0.1 pg/ml. This application is a Continuation-in-Part application of the pending U.S. patent application Ser. No.15/460,244 filed on Mar. 16, 2017 which claims priority to the provisional patent application No. 62/418,793 filed on Nov. 8, 2016, all of which are hereby incorporated by reference in their entirety. Although incorporated by reference in its entirety, no arguments or disclaimers made in the parent application apply to this divisional application. Any disclaimer that may have occurred during the prosecution of the above-referenced application(s) is hereby expressly rescinded. Consequently, the Patent Office is asked to review the new set of claims in view of the entire prior art of record and any search that the Office deems appropriate.The present invention relates to method for clinically identifying Parkinson disease dementia from Parkinson disease.Parkinson disease (PD) is the second most common neurodegenerative disease after Alzheimer's disease. More than 1% of people older than 65 years old are suffering from PD. About 10 ...

REFRACTORY MATERIAL AND CASTING NOZZLE

Provided is a refractory material having both excellent erosion/corrosion resistance and thermal shock resistance, which has hardly been obtainable by conventional techniques, and a casting nozzle using the refractory material. The refractory material of the present invention contains: MgO in an amount of 40 mass % or more; a free carbon component in an amount of 4 to 30 mass %; and one or more selected from the group consisting of BO, PO, SiOand TiO, in a total amount of 0.3 to 3 mass %, with the remainder being at least one other type of additional refractory component, wherein a void layer exists in an interface between a carbon-containing matrix microstructure residing at least on opposite sides of a maximum-size one of a plurality of MgO-containing particles in the refractory material, and the maximum-size MgO-containing particle, wherein a sum of respective thicknesses of the void layer at two positions on the opposite sides is 0.2 to 3.0% in terms of a ratio with respect to a particle size of the maximum-size MgO-containing particle, and wherein an inorganic compound comprised of MgO and the one or more selected from the group consisting of BO, PO, SiOand TiOexists in an entirety or a part of a surface of each of the plurality of MgO-containing particles. 1. A refractory material containing , in terms of a chemical composition as measured after being subjected to a heat treatment in a non-oxidizing atmosphere at 1000° C.: MgO in an amount of 40 mass % or more; a free carbon component in an amount of 4 to 30 mass %; and one or more selected from the group consisting of BO , PO , SiOand TiO , in a total amount of 0.3 to 3 mass % , with the remainder being at least one other type of additional refractory component ,wherein a void layer exists in an interface between a carbon-containing matrix microstructure residing at least on opposite sides of a maximum-size one of a plurality of MgO-containing particles in the refractory material, and the maximum-size MgO- ...

INSULATION MATERIAL

The method is for use with a substrate having a plurality of parallel channels extending therethrough. In the method, the steps comprise: filling a selected plurality of the channels with a granular material ; and consolidating the granular material through heat. The selected plurality of channels is selected to produce a wall that separates the substrate into: a first portion having a first plurality of the parallel channels extending therethrough; and a second portion having a second plurality of the parallel channels extending therethrough. 1. A method of forming an insulating material comprising the steps of:a) mixing from about 65 to 85% by weight of fly-ash with from about 15 to 35% by weight of a heat sensitive binder;b) casting the mixture obtained in step (a), andc) firing said casting to at least about 800° C.2. The method of claim 1 , wherein said mix is first cast in a mold and heated to between about 300° C. and 750° C. claim 1 , cooled and unmolded claim 1 , and fired to above said about 850° C.3. The method of claim 1 , wherein said firing is above 900° C.4. The method of claim 3 , wherein said firing is for at least 12 hours.5. The method of wherein said heat sensitive binder is selected from boric acid and anhydrous boron.6. A free flowing insulating material having a thermal conductivity of between about 0.8 and 1.8 BTUin/ft·hr°F. claim 1 , wherein said material comprises: a) from about 65 to 85% by weight of fly-ash claim 1 , b) from about 2 to 15% by weight of a heat sensitive binder; c) from 0 to 7% by weight of a non-wetting agent selected from the group consisting of calcium fluoride claim 1 , magnesium fluoride and barium sulphate; d) from 0 to 10% by weight of a heat expandable material selected from the group consisting of vermiculite and graphite; ande) from 0 to 1% by weight of a dust suppressant, said insulating material having a flexural strength (CMOR) of at least about 200 psi.7. The insulating material of having a compressive ...

CERAMIC MEMBER

A ceramic member comprising a compound oxide of La, E and Mn, wherein AE is (i) Ca, or (ii) contains Ca and at least one of Sr and Ba with a total amount of Sr and Ba to a total of Ca, Sr and Ba of not more than 5 mol %, and a crystal system in a surface of the ceramic member is a monoclinic system. 1. A ceramic member comprising a compound oxide of La , AE and Mn , wherein:AE is (i) Ca, or (ii) contains Ca and at least one of Sr and Ba with a total amount of Sr and Ba to a total of Ca, Sr and Ba of not more than 5 mol %, anda crystal system in a surface of the ceramic member is a monoclinic system.3. The ceramic member according to claim 1 , whereina total of molar parts of the La and molar parts of the AE is 80 to less than 100 molar parts with respect to 100 molar parts of the Mn, andthe molar parts of the AE are more than 0 molar part to not more than 10 molar parts with respect to 100 molar parts of the Mn.4. The ceramic member according to claim 1 , wherein the crystal system in the surface of the ceramic member is different from a crystal system in a middle portion of the ceramic member.5. The ceramic member according to claim 4 , wherein the crystal system in the surface is a monoclinic system claim 4 , and the crystal system in the middle portion is an orthorhombic system.6. The ceramic member according to claim 1 , wherein the ceramic member is a bare body of an electronic component.7. An electronic element comprising:{'claim-ref': {'@idref': 'CLM-00006', 'claim 6'}, 'the ceramic member according to ; and'}an electrode on a surface of the bare body.8. The electronic element according to claim 7 , wherein a square of a correlation coefficient r of current-voltage characteristics is not less than 0.9995.9. The electronic element according to claim 7 , wherein the electronic element is a thermistor element constructed to suppress an inrush current.10. A ceramic member comprising a compound oxide of La claim 7 , AE and Mn claim 7 , wherein:AE is (i) Ca, or (ii ...

BINDER, ADHESIVE AND ACTIVE FILLER SYSTEM FOR THREE-DIMENSIONAL PRINTING OF CERAMICS

A powder for three-dimensional printing including a mixture of soluble adhesive; cement filler including magnesium oxide, and acid additive; and nonreactive ceramic filler. A kit includes a substantially nonaqueous liquid jetting fluid, and a solid powder mixture including soluble adhesive, magnesium oxide, an acid additive, and a nonreactive ceramic filler. A nonaqueous liquid jetting fluid includes up to 50 wt % cosolvents, and an acidic additive. A method for forming a three dimensional article includes providing a layer of a powder mixture including a soluble adhesive, magnesium oxide, an acid additive, and a nonreactive ceramic filler; and applying a substantially nonaqueous liquid jetting fluid including less than 50% water by weight to the powder mixture layer. A solid article formed by three-dimensional printing includes a solidified combination of a powder mixture including soluble adhesive, magnesium oxide, acid additive, and nonreactive ceramic filler; and a substantially nonaqueous liquid jetting fluid. 1. A powder for three-dimensional printing , comprising: a soluble adhesive;', magnesium oxide, and', 'an acid additive selected from the group consisting of lactic acid, acetic acid, tartaric acid, ascorbic acid, adipic acid, oxalic acid, butyric acid, malonic acid, maleic acid, gluconic acid, benzoic acid, propanoic acid, phthalic acid, itaconic acid, succinic anhydride, acetic anhydride, maleic anhydride, phthalic anhydride, propanoic anhydride, monosodium glutamate, monosodium citrate, monosodium tartrate, g-butyrolactone, and d-gluconolactone; and, 'a cement filler comprising'}, 'a nonreactive ceramic filler., 'a mixture of2. The powder of claim 1 , wherein the soluble adhesive is selected from the group consisting of compounds derived from starch and compounds derived from cellulose.3. The powder of claim 2 , wherein the soluble adhesive is selected from the group consisting of maltodextrin claim 2 , hydrolyzed starch claim 2 , and hydroxypropyl ...

Composition for Providing A Batch Refractory Ceramic Product and Method

Exemplary embodiments relate to a batch for producing an unshaped refractory ceramic product, to a method for producing a fired refractory ceramic product, to a fired refractory ceramic product and to the use of an unshaped refractory ceramic product. 1. A method for producing a fired refractory ceramic product comprising the following steps: '55 to 84% by mass of at least one magnesia-based raw material, and 16 to 45% by mass of raw magnesite consisting primarily of magnesium carbonate, each relative to the total mass of the batch; wherein the total calcium carbonate content of the raw magnesite lies below 10% by mass relative to the total mass of raw magnesite;', '1.1 provision of a batch comprising1.2 application of the batch to the desired production site;1.3 firing of the applied batch into a fired refractory ceramic product2. The method according to for producing said fired refractory ceramic product which exhibits at least one of the following phases in the fractions indicated in each case:forsterite: >5% by mass;merwinite: <0.5% by mass;relative to the total mass of the product in each case.3. The method according to for producing said fired refractory ceramic product claim 1 , wherein at least one of the following oxides exhibits at most the fraction indicated in each case:CaO<5% by mass;{'sub': 2', '3, 'FeO<3.5% by mass;'}{'sub': 2', '3, 'AlO<3.0% by mass;'}relative to the total mass of the product in each case.4. The method according to claim 1 , wherein the batch is applied to the desired application site as an injection mass claim 1 , tundish mass claim 1 , ramming mass or backfilling mass. The invention relates to a batch for producing an unshaped refractory ceramic product, to a method for producing a fired refractory ceramic product, to a fired refractory ceramic product and to the use of an unshaped refractory ceramic product.As is known, the term “batch” describes a composition formed from one or more components which can be used to produce a fired ...

DEVELOPMENT OF NICKEL-ZINC FERRITES AND METHODS FOR PREPARING SAME USING IRON-OXIDE BYPRODUCTS OF STEEL INDUSTRY

Method for preparing soft cubic ferrites of a general formula M()MFeOcomprising the steps of contacting an iron source a first metal oxide having the general formula MOand a second metal oxide having the general formula MaOto form a mixture, wherein the stoichiometric ratio of (M+M) to iron is in the range from greater than zero to about 2, and wherein Mand Mcomprise nickel, magnesium, zinc, or a combination thereof; and calcining the mixture at a temperature range of from about 1000° C. to about 1500° C. in a static air atmosphere, to form a soft cubic ferrite of a general formula Ma()MFeO, wherein the mixture is not subjected to an oxidation step or a reduction step prior to contacting and wherein calcining comprises a single stage heat treatment. 1. A method for preparing a soft cubic ferrite having a general formula MMFeO , the method comprising: i. an iron source,', {'sup': 'b', 'sub': x', 'y, 'ii. a first metal oxide having the general formula MO; and'}, {'sup': a', 'a', 'b, 'sub': x', 'y, 'iii. a second metal oxide having the general formula MO; wherein each of Mand Mcomprise nickel, magnesium, zinc, or a combination thereof to form a mixture, and'}], 'a) contacting 'wherein the mixture is not subjected to an oxidation step or a reduction step prior to contacting, and wherein calcining comprises a single stage heat-treatment.', 'b) calcining the mixture at a temperature of from about 1,000° C. to about 1,500° C. in a static air atmosphere;'}2. The method of claim 1 , wherein Mis nickel.3. The method of claim 1 , wherein Mis zinc.4. The method of claim 1 , wherein the iron source comprises iron containing by-products of iron ore processing.5. The method of claim 4 , wherein the iron containing by-products comprise an iron oxide dust.6. The method of claim 5 , wherein the iron dust comprises an oxide of Fe(II) claim 5 , Fe(III) claim 5 , Fe(II/III) claim 5 , or a combination thereof.7. The method of claim 5 , wherein the iron oxide dust comprises at least 68 wt ...

NICKEL-ZINC FERRITES AND METHODS FOR PREPARING SAME USING FINE IRON OXIDE AND BAG HOUSE DUST

Method for preparing soft cubic ferrites of a general formula MMFeOcomprising the steps of contacting an iron source a first metal oxide having the general formula MOand a second metal oxide having the general formula MOto form a mixture, wherein the stoichiometric ratio of (M+M) to iron is in the range from greater than zero to about 2, and wherein Mand Mcomprise nickel, magnesium, zinc, or a combination thereof; and calcining the mixture at a temperature range of from about 1000° C. to about 1500° C. in a static air atmosphere, to form a soft cubic ferrite of a general formula MMFeO, wherein the mixture is not subjected to an oxidation step or a reduction step prior calcining. 1. A method of synthesis soft cubic ferrites of a general formula MMFeOcomprising: i. an iron source;', {'sup': 'b', 'sub': x', 'y, 'ii. a first metal oxide having the general formula MO; and'}, {'sup': 'a', 'sub': x', 'y, 'claim-text': [{'sup': a', 'b, 'wherein metals Mand Mcomprise nickel, magnesium, zinc, or a combination thereof; and'}, {'sup': a', 'b, 'wherein the stoichiometric ratio of M/Mis equal to i/(1−i);'}], 'iii. a second metal oxide having the general formula MO;'}], 'a) contacting{'sup': a', 'b, 'b) mixing the iron source, the first metal oxide, and the second metal oxide to form a mixture, wherein the stoichiometric ratio of (M+M) to iron is from greater than zero to about 2; and then'} 'wherein the mixture is not subjected to an oxidation step or a reduction step prior calcining.', 'c) calcining the mixture at the temperature range from about 1000° C. to about 1500° C. in a static air atmosphere;'}2. The method of claim 1 , wherein the metal Mis nickel.3. The method of claim 1 , wherein the metal Mis zinc.4. The method of claim 1 , wherein i is in a range from about 0.1 to about 0.45. The method of claim 1 , wherein the iron source comprises iron containing by-products of iron ore processing.6. The method of claim 5 , wherein the iron containing by-products comprise iron ...

DEVELOPMENT OF NANOCRYSTALLINE MAGNESIUM FERRITES AND METHODS FOR PREPARING SAME FROM STEEL ROLLING MILL BY-PRODUCT MILLSCALE

Method for preparing soft cubic ferrites of a general formula MFeOcomprising the steps of contacting an iron source comprising metallic iron and/or an oxide of Fe(II), Fe(III), Fe(II/III) and a metal oxide of the general formula MO, to form a mixture, wherein the initial stoichiometric ratio of M to iron is in the range from greater than zero to about 2, and wherein M is nickel, magnesium, zinc, or a combination thereof; and calcining the mixture at a temperature range of from about 1000° C. to about 1500° C. in a static air atmosphere, to form a soft cubic ferrite of a general formula MFeO, wherein the mixture is not subjected to an oxidation step prior to calcining. 1. A method for preparing a soft cubic ferrite having the general formula MFeO , the method comprising: i. an iron source comprising a metallic iron and/or an oxide of Fe(II), Fe(III), Fe(II/III), or a combination thereof; and', {'sub': x', 'y, 'ii. a metal oxide having the general formula MO, such that the initial stoichiometric ratio of M to iron is in the range of from greater than zero to about 2, and wherein M comprises nickel, magnesium, zinc, or a combination thereof to form a mixture; and then'}], 'a) contacting{'sub': 2', '4, 'claim-text': 'wherein the mixture is not subjected to an oxidation step prior to calcining.', 'b) calcining the mixture at a temperature of from about 1,000° C. to about 1,500° C. in a static air atmosphere to form a soft cubic ferrite of having the general formula MFeO,'}2. The method of claim 1 , wherein M is magnesium.3. The method of claim 1 , wherein the iron source comprises mill scale.4. The method of claim 3 , wherein the mill scale comprises one or more oxides of Fe claim 3 , Fe(II) claim 3 , Fe(III) claim 3 , Fe(II/III) claim 3 , or a combination thereof claim 3 , and wherein the mill scale further comprises from about 0.3% SiOto about 1% SiO.5. The method of claim 1 , wherein the metal oxide comprises mill scale and a pure metal oxide.6. The method of claim 1 ...

MAGNESIUM ALUMINATE SPINEL REINFORCED MAGNESIUM OXIDE-BASED FOAM CERAMIC FILTER SYNTHESIZED IN SITU FROM MAGNESIUM OXIDE WHISKER, AND PREPARATION METHOD THEREFOR

The present invention provides A magnesium oxide whisker in-situ formed MA spinel-reinforced magnesium oxide-based ceramic foam filter and a method for preparing the same. The method comprising: 1) preparing a ceramic slurry having a solid content of 60%-70% by dosing 15%-25% by mass of a nanometer alumina sol, 0.8%-1.5% by mass of a rheological agent, and the balance magnesium oxide ceramic powder comprising magnesium oxide whiskers, and then adding deionized water and ball milling to mix until uniform, and then vacuum degassing the mixture; 2) soaking a polyurethane foam template into the ceramic slurry, squeezing by a roller press the polyurethane foam template to remove redundant slurry therein to make a biscuit, and drying the biscuit by heating it to 80° C.-1200° C.; 3) putting the dried biscuit into a sintering furnace, elevating the temperature to 1400° C.-1600° C. and performing a high temperature sintering, cooling to the room temperature with the furnace to obtain the magnesium oxide-based ceramic foam filter. 1. A magnesium oxide whisker in-situ formed MA spinel-reinforced magnesium oxide-based ceramic foam filter wherein the filter is obtained by coating onto a polyurethane foam carrier a slurry of a magnesium oxide-based ceramic comprising magnesium oxide whiskers , and then drying and sintering.2. A method for preparing a magnesium oxide whisker in-situ formed MA spinel-reinforced magnesium oxide-based ceramic foam filter wherein the method comprises the steps of:1) preparing a ceramic slurry having a solid content of 60%-70% by dosing 15%-25% by mass of a nanometer alumina sol, 0.8%-1.5% by mass of a rheological agent, and the balance magnesium oxide ceramic powder comprising a magnesium oxide whiskers, and then adding deionized water and ball milling to mix until uniform, and vacuum degassing the mixture; the rheological agent is a mixture of a urea formaldehyde resin and a cellulose ether, wherein the urea formaldehyde resin accounts for 20% of the ...

HIGH Q MODIFIED BARIUM MAGNESIUM TANTALATE FOR HIGH FREQUENCY APPLICATIONS

Disclosed are embodiments of a barium magnesium tantalate including additional components to increase the Q value of the material. In some embodiments, complex tungsten oxides and/or hexagonal perovskite crystal structures can be added into the barium magnesium tantalate to provide for advantageous properties. In some embodiments, no tin is used in the formation of the material. 1. A high Q ceramic material comprising:barium magnesium tantalate; andone of a complex tungsten oxide compound, a hexagonal perovskite crystal structure, or a double perovskite crystal structure incorporated into the barium magnesium tantalate to form a composite material having a high Q value of greater than 12000 at about 10 GHz.2. The high Q ceramic material of wherein the high Q ceramic material does not include tin.3. The high Q ceramic material of wherein the complex tungsten oxide is incorporated into the barium magnesium tantalate.4. The high Q ceramic material of wherein between 3 wt. % and 5 wt. % of the complex tungsten oxide is incorporated into the barium magnesium tantalate.5. The high Q ceramic material of further including MgTaOincorporated into the barium magnesium tantalate.6. The high Q ceramic material of wherein the complex tungsten oxide compound claim 1 , the hexagonal perovskite crystal structure claim 1 , or the double perovskite crystal structure is selected from the group consisting of BaMgWO claim 1 , BaLiTasWO claim 1 , BaLiTasWO claim 1 , BaMgWO claim 1 , BaLaTaO claim 1 , BaLiTasWO claim 1 , BaLaLiWO claim 1 , BaTaWO claim 1 , BaLaMgWO claim 1 , BaLaLiWO claim 1 , SrLaTaO claim 1 , and SrLaTaO.7. The high Q ceramic material of wherein the hexagonal perovskite crystal structure is incorporated into the barium magnesium tantalate.8. The high Q ceramic material of wherein about 5 wt. % of the hexagonal perovskite crystal structure is incorporated into the barium magnesium tantalate.9. The high Q ceramic material of further including MgTaOincorporated into the ...

SHAPED ABRASIVE PARTICLE INCLUDING DOPANT MATERIAL AND METHOD OF FORMING SAME

A method of forming a shaped abrasive particle including extruding a mixture into a form, applying a dopant material to an exterior surface of the form, and forming a precursor shaped abrasive particle from the form. 1. A particulate material comprising:a shaped abrasive particle having a body comprising a length (l), a width, (w), and a thickness (t), wherein the body comprises:{'sub': '1c', 'a first exterior surface having a first dopant amount (D) of a first dopant material;'}{'sub': '2c', 'a second exterior surface spaced apart from the first exterior surface by at least one edge, the second exterior surface having a second dopant amount (D) of a second dopant material; and'}{'sub': 'c', 'wherein the body comprises a dopant amount difference (ΔD) between the first dopant amount and the second dopant amount.'}2. The particulate material of claim 1 , wherein the first dopant material and second dopant material are different from each other.3. The particulate material of claim 1 , wherein the body comprises a material selected from the group consisting of an oxide claim 1 , a nitride claim 1 , a carbide claim 1 , a boride claim 1 , an oxycarbide claim 1 , an oxynitride claim 1 , or any combination thereof.4. The particulate material of claim 1 , wherein the shaped abrasive particle comprises alpha alumina.5. The particulate material of claim 4 , wherein the shaped abrasive particle comprises at least about 90 wt % alpha alumina.6. The particulate material of claim 4 , wherein the alpha alumina has an average grain size of at least 0.01 microns and not greater than about 1 micron.7. The particulate material of claim 1 , wherein at least one of the first dopant material and the second dopant material comprises an element or compound including an element selected from the group consisting of alkali elements claim 1 , alkaline earth elements claim 1 , rare-earth elements claim 1 , hafnium (Hf) claim 1 , zirconium (Zr) claim 1 , niobium (Nb) claim 1 , tantalum (Ta) ...

MnZn-FERRITE AND ITS PRODUCTION METHOD

A method for producing MnZn-ferrite comprising Fe, Mn and Zn as main components, and at least Co, Si and Ca as sub-components, the main components in the MnZn-ferrite comprising 53-56% by mol (as FeO) of Fe, and 3-9% by mol (as ZnO) of Zn, the balance being Mn as MnO, comprising the step of sintering a green body to obtain MnZn-ferrite; the sintering comprising a temperature-elevating step, a high-temperature-keeping step, and a cooling step; the high-temperature-keeping step being conducted at a keeping temperature of higher than 1050° C. and lower than 1150° C. in an atmosphere having an oxygen concentration of 0.4-2% by volume; the oxygen concentration being in a range of 0.001-0.2% by volume during cooling from 900° C. to 400° C. in the cooling step; and the cooling speed between (Tc+70)° C. and 100° C. being 50° C./hour or more, wherein Tc represents a Curie temperature (° C.) calculated from % by mass of FeOand ZnO. 1. A method for producing MnZn-ferrite comprising Fe , Mn and Zn as main components , and at least Co , Si and Ca as sub-components , the main components in said MnZn-ferrite comprising 53-56% by mol (as FeO) of Fe , and 3-9% by mol (as ZnO) of Zn , the balance being Mn as MnO , comprising the steps ofsintering a green body to obtain MnZn-ferrite;said sintering comprising a temperature-elevating step, a high-temperature-keeping step, and a cooling step;said high-temperature-keeping step being conducted at a keeping temperature of higher than 1050° C. and lower than 1150° C. in an atmosphere having an oxygen concentration of 0.4-2% by volume;the concentration of oxygen being in a range of 0.001-0.2% by volume during cooling from 900° C. to 400° C. in said cooling step; and{'sub': 2', '3, 'a cooling speed between (Tc+70) ° C. and 100° C. being 50° C./hour or more, wherein Tc represents a Curie temperature (° C.) calculated from the percentages by mol of FeOand ZnO contained in the main components in said MnZn-ferrite.'}2. The method for producing ...

CERAMIC COMPONENT AND THREE-DIMENSIONAL MANUFACTURING METHOD OF CERAMIC COMPONENT

A ceramic component is provided that is suitable to be placed in high temperature environment. The component includes a first member that is formed of a first material, and a ceramic layer that is bonded to a surface of the first member, which is a side exposed to the high temperature environment and that is formed of a ceramic material having a higher heat resistance than that of the first member. A bonding portion between the first member and the ceramic layer is formed of a composite material having the first material and the ceramic material, and a gradient composition in which an abundance ratio of the first material gradually decreases and an abundance ratio of the ceramic material gradually increases in a direction from the first member to the ceramic layer. 1. A ceramic component placed in high temperature environment , the component comprising:a first member that is formed of a first material; anda ceramic layer that is bonded to a surface of the first member, which is a side exposed to the high temperature environment and that is formed of a ceramic material having a higher heat resistance than that of the first member, a composite material having the first material and the ceramic material, and', 'a gradient composition in which an abundance ratio of the first material gradually decreases and an abundance ratio of the ceramic material gradually increases in a direction from the first member to the ceramic layer., 'wherein a bonding portion between the first member and the ceramic layer is formed of'}2. The ceramic component according to claim 1 ,wherein the ceramic layer is formed of a plurality of layers,the plurality of layers are formed of different ceramic materials, andthe bonding portions of the respective layers of the plurality of layers are configured to have the gradient composition.3. The ceramic component according to claim 1 ,wherein the ceramic layer is formed of a plurality of layers,the plurality of layers have different properties, andthe ...

THERMAL SPRAY COATING, MEMBER FOR SEMICONDUCTOR MANUFACTURING EQUIPMENT, FEEDSTOCK MATERIAL FOR THERMAL SPRAY, AND METHOD FOR PRODUCING THERMAL SPRAY COATING

A thermal spray coating according to the present invention contains mainly magnesium, aluminum, oxygen, and nitrogen and has, as a main phase, a crystal phase of a MgO—AlN solid solution in which aluminum nitride is dissolved with magnesium oxide. The thermal spray coating is obtained by thermal spray of powder of a ceramic material containing mainly magnesium, aluminum, oxygen, and nitrogen and having, as a main phase, a crystal phase of a MgO—AlN solid solution in which aluminum nitride is dissolved with magnesium oxide. 1. A feedstock material for thermal spray comprising powder of a ceramic material containing mainly magnesium , aluminum , oxygen , and nitrogen and having , as a main phase , a crystal phase of a MgO—AlN solid solution in which aluminum nitride is dissolved with magnesium oxide.2. The feedstock material for thermal spray according to claim 1 , wherein the XRD peak of the MgO (200) plane measured with CuKα radiation shifts to a higher angle side with respect to 2θ=42.90° claim 1 , which corresponds to the peak of the cubic crystal of magnesium oxide.3. The feedstock material for thermal spray according to claim 1 , wherein claim 1 , in component analysis of the feedstock material for thermal spray claim 1 , the Mg/(Mg+Al) molar ratio is 0.62 or more.4. The feedstock material for thermal spray according to claim 1 , wherein the feedstock material contains claim 1 , as a subphase claim 1 , a magnesium aluminum oxide.5. The feedstock material for thermal spray according to claim 1 , wherein the feedstock material contains claim 1 , as a subphase claim 1 , a magnesium-aluminum oxynitride phase whose XRD peak measured with CuKα radiation appears at claim 1 , at least claim 1 , 2θ=47° to 49°.6. A method for producing a thermal spray coating comprising forming a thermal spray coating by plasma spray using the feedstock material for thermal spray according to . This application is a Divisional of U.S. application Ser. No. 14/557,801, filed Dec. 2, 2014, ...

REFRACTORY MOLDED BODY, COMPOUNDS, BINDERS, AND METHOD FOR PRODUCING SAME

The present invention relates to a compound for making high-temperature-resistant or refractory molded bodies, made up of a mixture of: 1. A compound for making high-temperature-resistant or refractory molded bodies , the compound including a mixture of:a refractory or high-temperature-resistant inorganic powder, granules and/or granulate, anda binder made of a combination of tannin, lactose, fine-grained silica and aluminum powder.2. A compound for making high-temperature-resistant or refractory molded bodies , the compound including a mixture of:a refractory or high-temperature-resistant inorganic powder, granules and/or granulate,a free-flowing compound or a powder made of carbon, anda binder made of a combination of tannin, lactose, fine-grained silica and aluminum powder.3. A binder for making refractory compounds or molded bodies the binder including a combination of tannin , lactose , fine-grained silica and aluminum powder.4. The binder defined in claim 3 , wherein the ratio of lactose to tannin is between 0.1:1 and 0.3:1.5. The binder defined in claim 3 , wherein the fine-grained silica has a particle size smaller than 50 μm.6. The binder defined in claim 3 , wherein phenolic resin in powder form of up to 30 wt. % based on the mixture of lactose and tannin is added to the binder.7. The binder defined in claim 3 , wherein further fine-grained additives are added to the binder claim 3 , namely magnesium or carbides claim 3 , in particular SiC claim 3 , BC claim 3 , TiC claim 3 , or nitrides claim 3 , in particular SiN claim 3 , AIN claim 3 , TiN claim 3 , or borides.8. The binder defined in claim 3 , wherein doped silicon is added to the binder.9. The binder defined in claim 3 , wherein ethylene glycol is added to the binder in an amount of 0.1 to 5 wt %.10. The binder defined in claim 3 , wherein the proportion of tannin is greater than the proportion of lactose.11. The compound defined in claim 2 , wherein the carbon is graphite and/or carbon black and/or ...

BATCH FOR PRODUCING AN UNSHAPED REFRACTORY CERAMIC PRODUCT, METHOD FOR PRODUCING AN UNSHAPED REFRACTORY CERAMIC PRODUCT, AND AN UNSHAPED REFRACTORY CERAMIC PRODUCT PRODUCED THEREBY

The invention relates to a batch for producing an unshaped refractory ceramic product, to a method for producing an unshaped refractory ceramic product, and to an unshaped refractory ceramic product produced by the method. 1. A batch for producing an unshaped refractory ceramic product which has the following features: 1.1.1 at least 60 mass % of a main component in the form of at least one raw material based on magnesia;', '1.1.2 a component in the form of at least one chemically modified starch ether; and', '1.1.3 a component in the form of at least one water-soluble chemical binder;, '1.1 the batch comprises the following components 1.2.1 less than 10 mass % calcium oxide; and', '1.2.2 less than 10 mass % carbon., '1.2 the batch comprises the following substances in the following mass proportions2. The batch according to with a main component in the form of at least one of the following raw materials: sintered magnesia or fused magnesia.3. The batch according to claim 1 , with a proportion of the main component in the range of from 60 to 98 mass %4. The batch according to claim 1 , with the component in the form of the at least one chemically modified starch ether in the form of at least one of the following chemically modified starch ethers:hydroxyalkyl starch ether, carboxyalkyl starch ether, hydroxyalkyl-carboxyalkyl starch ether, carbamoyl starch ether or cyanoalkyl starch ether.5. The batch according to claim 1 , with a proportion of the component in the form of the at least one chemically modified starch ether in the range of from 0.01 to 1.0 mass %.6. The batch according to claim 1 , with the component in the form of the at least one water-soluble chemical binder in the form of at least one of the following binders: at least one water-soluble sulphate claim 1 , at least one water-soluble phosphate claim 1 , or at least one water-soluble silicate.7. The batch according to claim 1 , with a proportion of 1 to less than 40 mass % of at least one of the ...

OPTICALLY TRANSPARENT ACTUATOR

An electroactive ceramic may be incorporated into a transparent optical element and may characterized by an average grain size of less than 200 nm, a relative density of at least 99%, and a transmissivity within the visible spectrum of at least 50%, while maintaining a dvalue of at least 20 pC/N. Optical properties of the electroactive ceramic, including transmissivity, haze, and clarity may be substantially unchanged during actuation of the optical element and the attendant application of a voltage to a layer of the electroactive ceramic. 1. An electroactive ceramic lacking a crystallographic center of inversion in its unit cell , and further comprising:an average grain size of less than approximately 200 nm;a relative density of at least 99%; anda transmissivity within the visible spectrum for a thickness ranging from approximately 10 nanometers to approximately 300 micrometers of at least 50%.2. The electroactive ceramic of claim 1 , further comprising less than 10% haze.3. The electroactive ceramic of claim 1 , wherein the transmissivity within the visible spectrum is at least 75%.4. The electroactive ceramic of claim 1 , when exposed to an applied field of from approximately −2 MV/m to approximately 2 MV/m claim 1 , comprises at least one of:less than a 50% change in the transmissivity;a change in haze of less than 50%, anda change in clarity of less than 50%.5. The electroactive ceramic of claim 1 , when exposed to an applied field of from approximately −2 MV/m to approximately 2 MV/m claim 1 , comprises:less than a 50% change in the transmissivity;a change in haze of less than 50%, anda change in clarity of less than 50%.6. The electroactive ceramic of claim 1 , when exposed to an applied field equal to at least 50% of its breakdown strength claim 1 , comprises at least one of:less than a 50% change in the transmissivity;a change in haze of less than 50%, anda change in clarity of less than 50%.7. The electroactive ceramic of claim 1 , when exposed to an ...

METHOD OF MAKING WATERPROOF MAGNESIUM OXYCHLORIDE REFRACTORY BRICK BY FLY ASH FROM MUNICIPAL SOLID WASTE INCINERATION

The invention discloses a method of making waterproof magnesium oxychloride refractory brick by fly ash from municipal solid waste incineration. The method comprises the following steps: (1) sulfur-containing compound and water are mixed into the fly ash and stirred evenly to make stabilized slurry, the heavy metals are stabilized and CaO is turned to Ca(OH)during this process. (2) The aqueous solution of MgO and MgClis added into the stabilized slurry to make magnesium oxychloride slurry by being stirred evenly. (3) The magnesium oxychloride slurry is cured to make magnesium oxychloride gel, (4) and the magnesium oxychloride aggregate is prepared by crushing the magnesium oxychloride gel. (5) The blended slurry is prepared by mixing metastable material, alkali metal hydroxide, NaSiO, magnesium oxychloride aggregate and water, (6) after being stirred, molded and cured, the waterproof magnesium oxychloride refractory brick is obtained. The waterproof magnesium oxychloride refractory brick made by this invention combines two materials, the geopolymer gel and the magnesium oxychloride gel, which possess different properties of fire resistance and water resistance. It is confirmed that the coexistence of geopolymer gel and magnesium oxychloride gel achieves the multi-stage solidification and stabilization of heavy metals and improving the water resistance of magnesium oxychloride refractory brick. 1. A Method of making waterproof magnesium oxychloride refractory brick by fly ash from municipal solid waste incineration includes the following steps:{'sub': '2', '(1) Sulfur-containing compound and water are mixed into the fly ash and stirred evenly to make stabilized slurry, the heavy metals are stabilized and CaO is turned to Ca(OH)during this process;'}{'sub': '2', '(2) The aqueous solution of MgO and MgClis added into the stabilized slurry which is obtained in the step (1), after being stirred evenly, magnesium oxychloride slurry is prepared;'}(3) The magnesium ...

STRONGLY SCATTERING CERAMIC CONVERTER AND METHOD FOR PRODUCING SAME

A strongly scattering optoceramic converter material having a density of less than 97% is provided, as well as a method for producing such an optoceramic material. By appropriately choosing in particular the composition, blending method, and sintering conditions, the production method permits to produce converter materials with tailored properties. 1. A single-phase porous optoceramic , comprising:{'sub': 3', '5', '12', '3', '5', '12, 'a ceramic phase ABO, wherein A is selected from a group consisting of Y, Gd, Lu, and combinations thereof, wherein B is selected from a group consisting of Al, Ga, and combinations thereof, and wherein the ceramic phase ABOcomprises Ce as at least one active element;'}a density, based on a theoretical density, of between 90 and 96.5% with pores having a polygonal shape; and{'sub': 3', '5', '12, 'particles not integrated into the ceramic phase ABOthat are in a range from 0 vol % to less than 5 vol %,'}wherein the optoceramic is configured to at least partially convert excitation light having a first wavelength into emitted light having a second wavelength, wherein the emitted light is emitted from a side of the optoceramic on which the excitation light is incident,wherein the optoceramic is configured to remit and combine at least a portion of the excitation light with the emitted light,wherein the optoceramic exhibits, when measured at a sample thickness of 1 mm, a remission at 600 nm that is from 0.75 to 0.95,wherein the optoceramic is configured for operation in remission, andwherein the optoceramic exhibits a quantum efficiency that is greater than 85%.2. The optoceramic of claim 1 , wherein the particles not integrated into the ceramic phase ABOare less than 1.5 vol %.3. The optoceramic of claim 1 , wherein the pores have a mean pore size from 0.1 to 100 micrometers.4. The optoceramic of claim 1 , wherein the ceramic phase ABOmainly comprises YAlO.5. The optoceramic of claim 1 , wherein the ceramic phase ABOmainly comprises LuAlO. ...

EXTRUDABLE CERAMIC PRECURSOR MIXTURES AND METHODS OF USE

An extrudable ceramic precursor mixture and method of use includes: an inorganic ceramic-forming component, a first siloxane prepolymer, a second siloxane prepolymer with a different composition than the first siloxane prepolymer, a catalyst adapted to catalyze polymerization of the first siloxane prepolymer with the second siloxane prepolymer into a siloxane-based polymer, and a thermally curable siloxane-based cross-linking agent adapted to crosslink the siloxane-based polymer. Comprised is a polydimethylsiloxane having a vinyl functional group and a polydimethylsiloxane having a silicon hydride functional group. 1. An extrudable ceramic precursor mixture , comprising:an inorganic ceramic-forming component;a first siloxane prepolymer;a second siloxane prepolymer with a different composition than the first siloxane prepolymer;a catalyst that promotes polymerization of the first siloxane prepolymer with the second siloxane prepolymer into a siloxane-based polymer; anda thermally curable siloxane-based cross-linking agent adapted to crosslink the siloxane-based polymer.2. The mixture of claim 1 , wherein the inorganic ceramic-forming component comprises one or more powders selected from the group consisting of aluminum oxide claim 1 , silicon dioxide claim 1 , magnesium oxide claim 1 , talc claim 1 , aluminosilicate clay claim 1 , alumina claim 1 , silica claim 1 , titania claim 1 , boehmite claim 1 , gibbsite claim 1 , alkali earth oxides claim 1 , alkaline earth oxides claim 1 , cordierite claim 1 , aluminum titanate claim 1 , mullite claim 1 , silicon carbide claim 1 , silicon nitride claim 1 , and combinations thereof.3. The mixture of claim 2 , wherein the inorganic ceramic-forming component further comprises precursor materials which are capable of producing a ceramic composition phase selected from cordierite claim 2 , mullite claim 2 , and cordierite-mullite claim 2 , and combinations thereof.4. The mixture of claim 1 , wherein the first siloxane prepolymer ...

Patent JPS5749511B2

Novel garnet compound, sintered body and sputtering target containing the same

일반식 (I) : Ln 3 In 2 Ga 3-X Al X O 12 (I) (식 중, Ln 은, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb 및 Lu 에서 선택된 1 종 이상의 금속 원소를 나타낸다. X 는, 0 ≤ X ＜ 3 이다.) 로 나타내는 가닛 화합물. General formula (I): Ln 3 In 2 Ga 3-X Al X O 12 (I) (In the formula, Ln represents one or more metal elements selected from La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu. X is 0 ≤ X < 3. ) The garnet compound represented by

Improvement device of energy efficiency using electron density increase

The present invention relates to a device for improving energy efficiency through an increase in electron density. The device for improving energy efficiency through an increase in electron density according to the present invention comprises: a case body; an electron generation unit which is accommodated inside the case body, and includes a mixture with moisture (H_2O), composed of a tourmaline powder, a permanent magnet, a porous material, and an electrolyte; an electron generation support unit which is embedded in the electron generation unit, and is made of a mixture of illite and porous material; and a conduction plate which is spaced apart from an outer surface of the electron generation support unit, and is formed between the electron generation unit and the electron generation support unit. According to the device for improving energy efficiency through an increase in electron density, movement and flow of electrons can be improved by using tourmaline having a permanent electric property and illite having a heat generation function. Furthermore, a contact area can be maximally increased via a combination structure of the electron generation unit, the electron generation support unit and a poke-type conduction plate according to the present invention, through which higher electron density can be obtained, thereby considerably improving energy flow and also maximizing energy efficiency. Furthermore, oxidation can be minimized through plating of metal parts such as the conduction plate and an ionization plate, thereby increasing lifespan of the device.

Aluminum titanate-based ceramic article

본 발명은 u(Al 2 O 3 -TiO 2 ) + v(R) + w(3Al 2 O 3 -2SiO 2 ) + x(Al 2 O 3 ) + y(SiO 2 ) + z(1.1SrO-1.5Al 2 O 3 -13.6SiO 2 -TiO 2 ) + a(Fe 2 O 3 -TiO 2 ) + b(MgO-2TiO 2 )를 포함하는 조성을 갖는 알루미늄 티타네이트-계 세라믹 제품에 관한 것으로, 여기서 R은 SrO-Al 2 O 3 -2SiO 2 또는 11.2SrO-10.9Al 2 O 3 -24.1SiO 2 -TiO 2 이고, u, v, w, x, y, z, a 및 b는 각 성분의 중량분율로서, (u+v+w+x+y+z+a+b=1)이고, 0.5<u≤0.95, 0.01<v≤0.5, 0.01<w≤0.5, 0<x≤0.5, 0<y≤0.1, 0<z≤0.5, 0<a≤0.3, 및 0<b≤0.3이다. In the present invention, u (Al 2 O 3 -TiO 2 ) + v (R) + w (3Al 2 O 3 -2SiO 2 ) + x (Al 2 O 3 ) + y (SiO 2 ) + z (1.1SrO-1.5 Aluminum titanate-based ceramic article having a composition comprising Al 2 O 3 -13.6SiO 2 -TiO 2 ) + a (Fe 2 O 3 -TiO 2 ) + b (MgO-2TiO 2 ), wherein R is SrO-Al 2 O 3 -2SiO 2 or 11.2SrO-10.9Al 2 O 3 -24.1SiO 2 -TiO 2 , u, v, w, x, y, z, a and b are the weight fractions of each component, (u + v + w + x + y + z + a + b = 1), 0.5 <u≤0.95, 0.01 <v≤0.5, 0.01 <w≤0.5, 0 <x≤0.5, 0 <y≤0.1 , 0 <z ≦ 0.5, 0 <a ≦ 0.3, and 0 <b ≦ 0.3. 알루미늄, 티타네이트, 세라믹 제품, 허니컴, 디젤 입상 필터 Aluminum, Titanate, Ceramic Products, Honeycomb, Diesel Granular Filter

一种基于纳米颗粒制备的软磁铁氧体材料及其制备方法

本发明公开了一种基于纳米颗粒制备的软磁铁氧体材料，包括以下重量份的原料：氧化铁55‑65份、氧化锰15‑25份、氧化锌10‑15份、锰酸锂纳米5‑15份、纳米添加剂4‑10粉、改性微硅粉3‑6粉、稀土助剂2‑6份。本发明采用常规的氧化铁、氧化锰、氧化锌制备软磁铁氧体材料，添加的锰酸锂纳米具有价格低、电位高、环境友好、安全性能高等优点，同时配合添加的纳米添加剂可完善材料的磁导率、电阻率等性能特征，添加的稀土助剂为SC粉、Y粉复合而成，可起到活化原料，提高原料间的结合。

溅射靶、透明导电膜、薄膜晶体管、薄膜晶体管基板及其制造方法及液晶显示装置

本发明提供具备基本上不会有由蚀刻造成的残渣等的产生的透明导电膜的薄膜晶体管型基板及其制造方法及使用了该薄膜晶体管型基板的液晶显示装置。在具备透明基板、设于所述透明基板上的源电极、设于所述透明基板上的漏电极、设于所述透明基板上的透明像素电极的薄膜晶体管型基板中，所述透明像素电极是作为主成分含有氧化铟，另外还含有选自氧化钨、氧化钼、氧化镍及氧化铌中的一种或两种以上的氧化物的透明导电膜，所述透明像素电极与所述源电极或所述漏电极电连接。本发明还提供此种薄膜晶体管型基板的制造方法及使用了该薄膜晶体管型基板的液晶显示装置。

Silicon carbide ceramic compositions added strontium carbonate for high temperature filtration filters and preparing method of high temperature filtration filters using the same

PURPOSE: A strontium carbonate containing silicon carbide ceramic composition for manufacturing a high temperature dust collecting filter and a method for manufacturing the same are provided to improve the porosity and the intensity of the filter by including silicon carbide powder, mullite supplying materials, and strontium carbonate. CONSTITUTION: A strontium carbonate containing silicon carbide ceramic composition for manufacturing a high temperature dust collecting filter includes 3-5 parts by weight of mullite powder and 1-3 parts by weight of strontium carbonate based on 100 parts by weight of silicon carbide powder. A method for manufacturing a mullite combined porous silicon carbide high temperature dust collecting filter includes the following: 1-15 parts by weight of an organic binder as a molding agent and 5-20 parts by weight of a solvent based on 100 parts by weight of the silicon carbide ceramic composition; a molded dust filter is dried based on hot air; the dried filter is sintered under atmosphere at a temperature between 1400 and 1450 degrees Celsius for 0.5 to 1 hours. The organic binder is at least one of methylcellulose, ethylcellulose, carboxymehylcellulose, and polyvinyl alcohol.

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Production of fast-setting bonded aggregate structures

A method of preparing a fast-setting concrete or the like by mixing, with an aggregate containing magnesia, ammonium phosphates in aqueous solution, wherein the composition of the phosphates is about 20% to 58% by weight polyphosphates, balance orthophosphate.