СПОСОБ ОБРАЗОВАНИЯ ОГНЕУПОРНОЙ РЕМОНТНОЙ МАССЫ И ПОРОШКОВАЯ СМЕСЬ ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Предложены способ и порошковая смесь для ремонта керамической сваркой электролитых огнеупорных оксидных материалов, которые применяют в стеклоплавильных и металлургических печах, подверженных жестким высокотемпературным условиям. Порошковая смесь, которую подают в потоке кислородсодержащего газа на подвергаемую ремонту огнеупорную поверхность, содержит воспламеняющиеся частицы алюминия и кремния и частицы огнеупорного оксида плюс один компонент, такой как карбонат натрия и/или избыток диоксида кремния, который создает в ремонтной массе стекловидную фазу, вследствие этого упрочняется связь между ремонтируемым огнеупорным материалом и ремонтной массой. Полученная предложенным способом ремонтная масса имеет долгий срок службы, что обеспечивает длительный период непрерывной работы печей. 2 с. и 18 з.п. ф-лы.

ОБЛАДАЮЩИЕ ПОКРЫТИЕМ АБРАЗИВНЫЕ МАТЕРИАЛЫ И СПОСОБ ИХ ИЗГОТОВЛЕНИЯ

Изобретение может быть использовано при изготовлении абразивных инструментов. Используют множество сверхтвердых абразивных частиц субмикрометрового или нанометрового размера алмаза или кубического нитрида бора или комбинации этих материалов и обладающие витреофильными поверхностями, способными образовывать химические связи с оксидами. Наносят на частицы покрытия из оксидного материала-предшественника и затем термически обрабатывают для высушивания и очистки покрытий. Покрытия выбраны из группы, включающей нитриды титана, ванадия, ниобия, тантала, молибдена и вольфрама или карбиды ванадия, ниобия, тантала, молибдена и вольфрама, фазу анатаза диоксида титана, фазу рутила диоксида титана, тетрагональный диоксид циркония, моноклинный диоксид циркония, диоксид циркония, стабилизированный оксидом иттрия или оксидом магния, переходные структуры или альфа-фазу оксида алюминия и оксиды ванадия, ниобия, тантала, гафния, молибдена и вольфрама, кварцевое стекло. Изобретение позволяет наносить покрытия ...

ВОЛОКНИСТАЯ ЗАГОТОВКА ДЛЯ ПОЛОЙ ЛОПАТКИ ГАЗОТУРБИННОГО ДВИГАТЕЛЯ

Изобретение относится к волокнистой заготовке для полой лопатки газотурбинного двигателя, к такой полой лопатке и способу изготовления такой полой лопатки. Изобретение также относится к газотурбинному двигателю и летательному аппарату, содержащим такую полую лопатку. Волокнистая заготовка для полой лопатки турбины газотурбинного двигателя включает в себя основную волокнистую структуру, полученную трехмерным тканьем и содержащую по меньшей мере одну основную часть, причем основная часть проходит от первой соединительной полосы, содержит первую основную продольную часть, подходящую для формирования, по существу, стенки стороны нагнетания аэродинамического профиля, затем часть поворота на 180°, подходящую для формирования, по существу, передней кромки или задней кромки аэродинамического профиля, затем вторую основную продольную часть, обращенную напротив первой основной продольной части и подходящую для формирования, по существу, стенки стороны всасывания аэродинамического профиля, и заканчивается ...

ОГНЕСТОЙКИЙ ПРОДУКТ И ЕГО ПРИМЕНЕНИЕ

Изобретение относится к огнестойкому составу, а также к его применению преимущественно для облицовки плавильных устройств для цветных металлов. Состав преимущественно содержит по меньшей мере 30 мас.% необработанного оливина с грубыми частицами, содержащего форстерит в количестве, например, по меньшей мере 70 мас.% и имеющего размеры частиц более 0,1 мм; по меньшей мере 35 мас.% оксида магния в форме муки с размером частиц1 мм; карбид кремния в форме муки с размером частиц1 мм; до 10 мас.% тонкодисперсной кремниевой кислоты и до 10 мас.% антиокислителя. Состав применяют в смеси с 2-10 мас.% кремнезоля в виде формованных кирпичей или огнестойкой заливочной массы, в которую для достижения необходимой пластичности добавляют воду. Технический результат изобретения – улучшение стойкости огнеупоров к расплавам фаялитовых шлаков и к воздействию сульфатов при температуре применения. 6 н. и 16 з.п. ф-лы, 1 табл., 7 ил.

ОГНЕУПОРНОЕ ИЗДЕЛИЕ И СПОСОБ ЕГО ФОРМОВАНИЯ И ИСПОЛЬЗОВАНИЯ

Изобретение относится к огнеупорному изделию. Технический результат изобретения заключается в повышении стойкости огнеупора к коррозии. Огнеупорное изделие содержит по меньшей мере 90 масс. % AlO; менее 3 масс. % SiOи первую легирующую добавку, содержащую оксид Та, Nb или их любое сочетание. 2 н. и 12 з.п. ф-лы, 10 ил.

СПОСОБ ПОЛУЧЕНИЯ ОГНЕУПОРНОГО МАТЕРИАЛА ДЛЯ ПРИМЕНЕНИЯ В ВЕРХНЕМ СТРОЕНИИ ВАННЫХ СТЕКЛОВАРЕННЫХ ПЕЧЕЙ, А ТАКЖЕ СПОСОБ ПОВЫШЕНИЯ СПЕКТРАЛЬНОГО КОЭФФИЦИЕНТА ИЗЛУЧЕНИЯ У ФОРМОВАННЫХ ОГНЕУПОРНЫХ ИЗДЕЛИЙ

Изобретение относится к получению динасового огнеупорного материала для применения в верхнем строении ванных стекловаренных печей. В соответствии с заявленным способом содержащее карбид кремния зернистое вещество смешивают с по крайней мере одним зернистым кремнезёмистым сырьём и связкой или смесью связок с получением формовочной массы, из которой прессуют кирпичи, которые затем сушат и обжигают при температуре выше 1200°С. Содержащее карбид кремния зернистое вещество в спектральной области от 1 до 5 мкм и при температурах свыше 1000°C обладает спектральным коэффициентом излучения выше спектрального коэффициента излучения матрицы огнеупорного материала. Полученный огнеупорный материал содержит по меньшей мере 78 мас.% диоксида кремния и 0,2-20 мас. % SiC. Технический результат изобретения – повышение излучательной способности динасовых огнеупоров. 2 н. и 13 з.п. ф-лы, 6 пр., 2 ил., 1 табл.

ПЛАВЛЕНЫЕ ЧАСТИЦЫ ОКСИДА АЛЮМИНИЯ И ОКСИДА ЦИРКОНИЯ

Изобретение относится к плавленым керамическим абразивным частицам на основе оксида алюминия и оксида циркония и может быть использовано для изготовления шлифовальных инструментов. Керамические частицы обладают следующим химическим составом в мас.%: ZrO+HfO: 38,0-46,0%; AlO: дополнение до 100%; SiO: 0,20-0,60%; YO: от 0,45 до 0,0%; TiO: от 1,00 до 2,00%; другие оксиды: <1,00%, причем отношение YO/SiOсоставляет от 0,80 до 2,00, а содержание тетрагональной фазы составляет от 60 до 90% от массы оксида циркония (остаток находится в моноклинной модификации). Технический результат изобретения - повышение стойкости частиц к абразивному износу. 2 н. и 10 з.п. ф-лы, 2 табл., 17 пр.

ПОРОШОК ДИОКСИДА ЦИРКОНИЯ

Изобретение относится к производству огнеупорной смеси частиц на основе диоксида циркония, предназначенной для производства спеченных продуктов, используемых в установках металлургической промышленности, стекловаренных печах, нефтехимических реакторах и цементных печах. Смесь частиц, состоящая из более 92 мас.% частиц диоксида циркония, включает (по массе): (а1) более 60% частиц диоксида циркония, размер которых превышает 50 мкм, где по меньшей пере 90 мас.% указанных агрегированных частиц диоксида циркония содержат менее 50 мас.% диоксида циркония в моноклинной фазе; (а2) более 15% частиц диоксида циркония, имеющих размер менее 50 мкм, (б) 1-2% частиц диоксида кремния, имеющих размер менее 50 мкм; (в) 0,3-5% частиц, включающих один, два или три оксида, выбранных из группы: CaO, MgO, и YO, где по меньшей мере 55 мас.% указанных частиц дополнительных оксидов обладают размером менее 50 мкм; (г) менее 1% частиц состоящих из «иных оксидов». В указанной смеси частиц содержится более 5% агрегированных ...

ПОРИСТЫЕ КЕРАМИЧЕСКИЕ ПРОДУКТЫ ИЗ СУБОКСИДОВ ТИТАНА

Изобретение относится к получению пористых мембран на основе субоксидов титана. Способ производства пористых продуктов, образованных, по существу, из субоксида(ов) титана общей формулы TiOx, в которой величина х составляет от 1,6 до 1,9. Указанный способ включает следующие стадии: а) смешивание исходных материалов, включающих, по меньшей мере, источник диоксида титана, восстановитель, содержащий углерод в количестве до 5 мас.% от веса диоксида титана, b) формование продукта, с) необязательно, а именно когда на стадии а) используются органические продукты, термическая обработка в воздушной или окислительной атмосфере, d) обжиг, например, при температуре более 1200°С, но не более 1430°С, в нейтральной или восстановительной атмосфере. Источник диоксида титана состоит, по меньшей мере, на 55%, предпочтительно, на 90% и более, из анатаза. Продукт, который может быть получен таким способом, обладает по существу одномодальным распределением диаметров пор с медианным размером 0,5-5 мкм. Открытая ...

ДЕТАЛЬ ИЗ КОМПОЗИЦИОННОГО МАТЕРИАЛА ОКСИД/ОКСИД С ТРЕХМЕРНЫМ УСИЛЕНИЕМ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

Изобретение относится к детали из композиционного материала оксид/оксид, которая содержит волокнистое усиление, образованное множеством слоев нитей основы и слоев нитей утка, связанных между собой посредством трехмерного тканья, при этом пространства между нитями усиления заполнены матрицей из жаропрочного оксида. Деталь отличается тем, что волокнистое усиление имеет переплетение тканья, выбранное среди следующих переплетений: интерлок, множественное полотняное, множественное сатиновое и множественное саржевое, и плотность переплетения по основе и по утку, составляющую от 4 до 20 нитей/см. Объемное содержание волокон в волокнистом усилении составляет от 40 до 51%. После формирования матрицы внутри структуры блоки матрицы имеют размеры, меньшие пятикратного максимального сучения нитей, что позволяет предупредить появление трещин в конечном материале детали. 2 н. и 5 з.п. ф-лы, 10 ил., 1 табл.

УСОВЕРШЕНСТВОВАННЫЙ ПЕНОКЕРАМИЧЕСКИЙ ФИЛЬТР ДЛЯ УЛУЧШЕНИЯ ФИЛЬТРОВАНИЯ РАСПЛАВЛЕННОГО ЧУГУНА

Изобретение относится к области фильтрования расплавленного металла. Предложен предшественник керамического материала и керамический фильтр, изготовленный из него, которые включают 35-70 масс.% огнеупорного алюмосиликата; 10-30 масс.% коллоидного диоксида кремния; до 2 масс.% модифицированного бентонита; до 35 масс.% белой сажи. Предшественник включает также воду и, возможно, порообразователь до 10 масс.% в виде полых сфер. Описан также способ фильтрования расплавленного чугуна. Изобретение обеспечивает получение прочного вспененного фильтра на основе муллита, обладающего улучшенными характеристиками при фильтрации чугуна. 4 н. и 39 з.п. ф-лы, 5 табл., 10 ил.

ОБОЛОЧКА ЯДЕРНОГО ТОПЛИВА С ВЫСОКОЙ УДЕЛЬНОЙ ТЕПЛОПРОВОДНОСТЬЮ И СПОСОБ ЕЕ ПРОИЗВОДСТВА

Данное изобретение относится к оболочкам микротвэлов ядерного реактора. Оболочка полностью или частично изготовлена из композиционного материала с керамической матрицей, содержащей волокна карбида кремния (SiC) в качестве армирования матрицы и межфазный слой между матрицей и волокнами. Матрица содержит, по меньшей, мере один карбид, выбранный из карбида титана (TiC), карбида циркония (ZrC) или тройного карбида титана-кремния (TiSiC)Способ изготовления оболочки ядерного топлива включает, в частности, изготовление волоконной предварительной формы, нанесение на нее химической паровой инфильтрацией межфазового слоя, нанесение матрицы. Технический результат - надежное механическое удержание продуктов деления ядерного топлива внутри оболочки при облучении и температурах между 800°C и 1200°C, при этом обеспечивается оптимальный перенос тепловой энергии к теплоносителю. 2 н. и 13 з.п. ф-лы, 2 ил.

ПРОДУКТ ИЗ ОКСИДА ХРОМА

Изобретение относится к огнеупорному продукту, применяемому в качестве внутренней облицовки газификатора. Спеченный огнеупорный продукт состоит из заполнителя, связанного матриксом, и содержит оксиды в процентном соотношении по массе: более 65 CrO, менее 35 AlO, 1 или более ZrO, по меньшей мере 20 масс. % которого стабилизировано в кубической и/или тетрагональной форме, 0,1 или более YO, действующего в качестве стабилизатора оксида циркония ZrO, менее 1,9% HfO, причем общее содержание оксида хрома, оксида алюминия и оксида циркония CrO+AlO+ZrOсоставляет более 90 масс. %. Продукт содержит соактиватор, действующий или не действующий в качестве стабилизатора оксида циркония, выбранный из СаО, MgO, TiOи их смесей, причем суммарное содержание оксида кальция, оксида магния и оксида титана СаО+MgO+TiOсоставляет менее 6,0 масс. % и более 0,5 масс. %, и более 50 масс. % оксида иттрия и соактиватора присутствуют в матриксе. Технический результат изобретения – улучшение устойчивости огнеупоров к шлаковой ...

ОБРАБОТКА ЗОЛЬНОГО УНОСА И ИЗГОТОВЛЕНИЕ ИЗДЕЛИЙ, СОДЕРЖАЩИХ СОСТАВЫ НА ОСНОВЕ ЗОЛЬНОГО УНОСА

Изобретение относится к составам на основе зольного уноса и может быть использовано для изготовления сравнительно тонких керамических изделий. Состав на основе зольного уноса формируют из смеси на основе зольного уноса, содержащей более 70% зольного уноса по сухому весу состава, пластификатор, служащий для связки частиц зольного уноса в составе, и, по желанию, одну или более керамических добавок. Смесь размалывают так, что средний размер частиц состава меньше 35 микрон. Сырое изделие желаемой формы, имеющее толщину меньше 40 мм, формуют из смеси воды и указанного порошкообразного состава на основе зольного уноса и пластификатора посредством прессования смеси при давлении больше 200 кг/см, после чего содержание воды в сыром изделии составляет меньше 12% общего веса смеси, а предел прочности при изгибе сырого изделия больше 1,5 кг/см. Способ может дополнительно содержать операцию предварительного просеивания зольного уноса или операцию декарбонизации зольного уноса, чтобы зольный унос имел ...

СФЕРИЧЕСКИЕ ЗЕРНА КОРУНДА НА ОСНОВЕ ПЛАВЛЕНОГО ОКСИДА АЛЮМИНИЯ, А ТАКЖЕ СПОСОБ ИХ ПОЛУЧЕНИЯ

Изобретения относятся к области химии и могут быть использованы при получении корунда на основе плавленого оксида алюминия. Корунд имеет сферические зерна с диаметром зерен от 0,001 до 5 мм, максимальное содержание оксида натрия 0,5 вес.%, максимальное содержание оксида титана 0,5 вес.%, насыпной вес от 1,5 кг/л до 2,5 кг/л и удельную поверхность по БЭТ от 0,005 до 0,05 м2/г. Корунд имеет прочность зерен на разрыв ≥20 н, предпочтительно ≥40 н. Корунд получают путем расплавления глинозема с добавкой от 0,1 до 1% кварцевого песка в электродуговой печи в окислительных условиях, расплав разливают со скоростью разлива менее 100 кг/мин и плавленую струю разбивают сжатым воздухом при давлении от 3 до 10 бар. Изобретения позволяют получить корунд с плотными компактными зернами. 2 н. и 4 з.п. ф-лы, 2 ил., 2 табл.

Способ изготовлени пенодиатомитовых кирпичей

Изобретение относится к производству строительных материалов, в частности к производству пенодиатомитовых кирпичей. Технический результат - получение пенодиатомитового кирпича с заданными технологическими свойствами и геометрическими параметрами, повышение прочности формованных изделий. Способ изготовления пенодиатомитовых кирпичей включает нагрев до максимальной температуры, выдержку в печи и ступенчатое охлаждение. Перед нагревом до максимальной температуры и выдержкой в печи изготовленную и разлитую пенодиатомитовую сырьевую массу в формы подвергают сушке в печах в течение времени и при температуре, достаточных для доведения остаточной влажности пенодиатомитовой сырьевой массы не более 20%, постепенному охлаждению до температуры окружающей среды, затем заготовки кирпичей подвергают распалубке, отбраковке и укладке на вагонетки. После этого заготовки кирпичей нагревают в печах до максимальной температуры в течение 1/3 части времени цикла термообработки, выдерживают при этой температуре ...

Шихта для изготовления огнеупорного материала

Изобретение относится к производству огнеупорных материалов, используемых для изготовления блоков, футеровки тепловых агрегатов и т.п. Шихта для изготовления огнеупорного материала включает следующие компоненты, мас.%: жидкое стекло 9,2-9,8; кремнефтористый натрий 1,0-1,2; кварцит 29,0-32,0; железная окалина 1,0-1,5; бура 1,0-1,5; динас - остальное. Технический результат изобретения – повышение термостойкости огнеупорного материала. 1 табл.

Сырьевая смесь для изготовления высокотемпературных теплоизоляционных изделий (варианты) и способ их изготовления

Изобретение относится к промышленности строительных материалов и может быть использовано при изготовлении высокотемпературных теплоизоляционных изделий. Сырьевая смесь содержит аморфную кремнеземистую породу в виде диатомита и карбонатную породу в виде мела или известняка, а в качестве огнеупорного пористого заполнителя содержит вспученный вермикулит при следующем соотношении компонентов, мас.%: диатомит 33,0-35,28, карбонатная порода 28,22-39,6, вспученный вермикулит 27,4-36,5. По второму варианту исполнения сырьевая смесь в качестве огнеупорного пористого заполнителя содержит вспученный перлит при следующем соотношении компонентов, мас.%: диатомит 20,33-32,64, карбонатная порода 16,27-39,16, вспученный перлит 28,2-63,4. Способ получения сырьевой смеси включает сушку и дробление диатомита и карбонатной породы в виде мела или известняка, их совместную механохимическую активацию в планетарной шаровой мельнице в течение 20-60 мин при центробежных перегрузках внутри стаканов мельницы 10G или ...

АБРАЗИВ ВЫСОКОТЕМПЕРАТУРНОГО СВЯЗЫВАНИЯ (ВАРИАНТЫ) И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Абразив высокотемпературного связывания содержит стекловидную связующую основу, в которой распределены абразивные частицы оксида алюминия. Стекловидная связующая основа имеет температуру отверждения не менее 1000°С. Абразивные частицы оксида алюминия содержат поликристаллический альфа-оксид алюминия, имеющий тонкую микрокристаллическую структуру со средним размером доменов не более 500 нм. Абразивные частицы оксида алюминия содержат также пиннинг-агент в виде фазы, диспергированной в поликристаллическом альфа-оксиде алюминия. Абразивные частицы альфа-оксида алюминия получают путем термообработки предшественника альфа-оксида алюминия, содержащего пиннинг-агент, при температуре не менее 1350°С. Смешивают абразивные частицы со стекловидной связующей основой и формуют заготовку. Заготовку подвергают термообработке при температуре отверждения не менее 1000°С. Повышается твердость абразива и стойкость к коррозии. 3 н. и 12 з.п. ф-лы, 2 табл.

ПЛАВЛЕНЫЙ ЛИТОЙ ОГНЕУПОРНЫЙ МАТЕРИАЛ НА ОСНОВЕ ОКСИДА АЛЮМИНИЯ, ДИОКСИДА ЦИРКОНИЯ И ДИОКСИДА КРЕМНИЯ И ПРИМЕНЕНИЕ ТАКОГО МАТЕРИАЛА

Изобретение касается плавленого литого огнеупорного материала на основе оксида алюминия, диоксида циркония и диоксида кремния (АЦК) и может быть использовано в плавильных резервуарах в контакте с расплавленным стеклом, а также в верхней части и на своде резервуаров. Плавленый литой огнеупорный материал содержит 60-70 мас.% AlO13-19 мас.% ZrO, 15,5-18 мас.% SiOи 2,0-2,6 мас.% NaO. В состав стеклофазы входит SiO, а также AlOи NaO, при этом молярное соотношение между AlOи NaO находится в диапазоне от 0,8 до 1,6. Технический результат изобретения - повышение устойчивости огнеупорного материала к просачиванию. 2 н. и 5 з.п. ф-лы, 2 ил., 2 табл.

Способ получения пеносиликатного материала

Изобретение относится к области производства строительных материалов, в частности пеносиликатного теплоизоляционного материала. Готовят шихту путем дозирования компонентов при их соотношении, мас. %: микрокремнезем 57,87-65,71, гидроксид натрия в пересчете на Na2O 14,47-17,14, наполнитель в виде отходов обогащения апатито-нефелиновых руд 12,38-14,29 и модифицирующая добавка в виде золы или золошлаковой смеси 4,76-14,89. Компоненты шихты перемешивают, загружают шихту в форму и выдерживают 20-24 ч на воздухе. Затем осуществляют вспенивание шихты в печи при температуре 650-675°С в течение 25-35 мин. После этого в течение 5-7 мин температуру понижают до 500-570°С и осуществляют отжиг пеносиликатного материала при этой температуре в течение 10-15 мин. Затем его охлаждают в печи до температуры окружающей среды. Способ позволяет получить пеносиликатный материал с пониженными водопоглощением 6,1-8,3 об. % и теплопроводностью 0,066-0,069 Вт/м⋅K при меньшем числе операций. 4 пр.

ДИЭЛЕКТРИЧЕСКИЙ КЕРАМИЧЕСКИЙ МАТЕРИАЛ, СОСТАВ ПАСТЫ ДЛЯ ТОЛСТОЙ ПЛЕНКИ И СПОСОБ ПОЛУЧЕНИЯ ДИЭЛЕКТРИЧЕСКОГО КЕРАМИЧЕСКОГО МАТЕРИАЛА

Использование: изобретение относится к улучшенным керамическим составам и способу их получения. Сущность изобретения: улучшенный керамический диэлектрический состав содержит керамический порошок глинозема, диоксид кремния, силиката или титаната и/или цирконата щелочноземельного металла или свинца с гомогенно распределенным на поверхности слоем покрытия из смеси оксидов металлов. Оксидное покрытие осаждается из раствора хелатов металлов с добавлением в раствор сильного основания. Предложен также способ пасты для толстой пленки, содержащей смесь диэлектрического керамического порошка без покрытия и диэлектрический керамический порошок с покрытием. 9 з.п.ф-лы, 2 табл., 2 ил.

ПРИМЕНЕНИЕ ОГНЕУПОРА НА ОСНОВЕ МАГНЕЗИТА И ДИОКСИДА ЦИРКОНИЯ

... 1. Применение огнеупора на основе магнезита и диоксида циркония, содержащего ZrO2 в количестве от 5 до 35 мас.% и MgO в количестве от 65 до 95 мас.%, а также другие компоненты в количестве максимум 5 мас.% и SiO2 в количестве менее 1,0 мас.%, в регенераторах ванных стекловаренных печей, при работе которых по меньшей мере периодически создается и поддерживается восстановительная атмосфера. 2. Применение по п.1, при котором содержание CaO в огнеупоре составляет менее 2,0 мас.%. 3. Применение по п.1, при котором содержание других компонентов в огнеупоре составляет максимум 2 мас.%. 4. Применение по п.1, при котором открытая пористость огнеупора составляет от 11 до 15 об.%. 5. Применение по п.1, при котором объемная масса огнеупора после обжига составляет от 3,20 до 3,60 г/см3. 6. Применение по п.1, при котором прочность огнеупора после обжига на сжатие при комнатной температуре составляет от 50 до 150 Н/мм2.

КОМПОЗИТНЫЙ МАТЕРИАЛ НА ОСНОВЕ ОКСИДА ЦИРКОНИЯ

... 1. Композитный материал, содержащий керамическую матрицу из оксида циркония и диспергированную в ней по меньшей мере одну вторичную фазу, отличающийся тем, что матрица из оксида циркония составляет по меньшей мере 51 об.% композитного материала, а вторичная фаза составляет от 1 до 49 об.% композитного материала, причем оксид циркония в основном, предпочтительно в количестве от 90 до 99%, особенно предпочтительно в количестве от 95 до 99% в расчете на содержание всего оксида циркония находится в тетрагональной фазе, причем тетрагональная фаза оксида циркония химически и/или механически стабилизирована.2. Композитный материал по п. 1, отличающийся тем, что матрица из оксида циркония имеет размер зерен в среднем от 1 до 2,0 мкм, предпочтительно в среднем от 0,5 до 2,0 мкм.3. Композитный материал по п. 1, отличающийся тем, что в качестве химических стабилизаторов он содержит YO, СеО, GdO, SmOи/или ErO, причем общее содержание химических стабилизаторов составляет менее 12 мол.% в расчете на ...

ВОЛОКНА НА ОСНОВЕ ОКСИДА ЦИРКОНИЯ/ОКСИДА МЕТАЛЛА

... 1. Способ получения волокна на основе циркония/оксида металла, включающий i) смешивание раствора соли металла или коллоидной дисперсии оксида металла, где упомянутый металл выбирают из группы, состоящей по меньшей мере из одного из металлов Группы IIA, переходного металла, металлов Группы IIIA и металлов Группы IIIB, с коллоидной дисперсией аморфного цирконийсодержащего полимера согласно формуле (I) [Zr4(OH)12(X)2(H2O)4]n (X)2n· 2nH2O, где Х представляет анион, совместимый с цирконийсодержащим полимером; n представляет целое число от 1 до менее 200, для создания смешанной коллоидной дисперсии; формование смешанной коллоидной дисперсии в волокно на основе циркония/металла. 2. Способ по п.1, в котором Х выбирают из группы, состоящей из NO3-, Cl- и ClCH2COO-. 3. Способ по п.2, дополнительно отличающийся тем, что упомянутая коллоидная дисперсия цирконийсодержащего полимера имеет соотношение Х к цирконию в диапазоне от около 1,0-0,98 до около 1,0-1,3 для поддержания упомянутой коллоидной дисперсии ...

ФОРМОВАННЫЙ ЭЛЕМЕНТ, СОДЕРЖАЩИЙ ПТК-КЕРАМИКУ

Изобретение относится к двигателестроению, в частности к топливной аппаратуре двигателей внутреннего сгорания. Изобретение позволяет повысить точность регулирования температуры нагрева топлива. Формованный элемент содержит канал для текучей среды, впускное отверстие для текучей среды и выпускное отверстие для текучей среды. Формованный элемент дополнительно содержит ПТК-керамику. Формованный элемент выполнен с возможностью нагрева при приложении напряжения с обеспечением нагревания текучей среды, проходящей через канал для текучей среды. 2 н. и 22 з.п. ф-лы, 6 ил.

Сырьевая смесь для изготовления керамических теплоизоляционных строительных материалов

Изобретение относится к составам сырьевых смесей для изготовления керамических теплоизоляционных материалов и может быть использовано для производства теплоизоляционной керамики при строительстве жилых, гражданских и промышленных зданий. Сырьевая смесь на основе аргиллита для изготовления керамических теплоизоляционных строительных материалов, в качестве корректирующей добавки дополнительно содержит тонкодисперсное природное аморфное кремнеземистое сырье следующего состава, масс. %: SiO2 87,00; Al2O3 5,00; TiO3 0,3; Fe2O3 2,25; P2O5 0,07; FeO менее 0,25; СаО 0,72; MgO 0,50; MnO 0,02; K2O 1,03; Na2O 0,58; SO3 менее 0,10; ППП 2,26., а в качестве щелочной добавки - коллоидный полисиликат натрия с силикатным модулем 6,5, полученный путем введения в 20%-ный водный раствор силиката натрия 16%-го гидрозоля диоксида кремния в соотношении 1:1,6, перемешивания при 100°С в течение 3 ч с последующей выдержкой 0,5 ч. Сырьевая смесь содержит компонеты в следующем соотношении, масс. %: аргиллиты 69,0- ...

ПРОППАНТ И СПОСОБ ЕГО ПРОИЗВОДСТВА

... 1. Проппант, включающий в себя совокупность двух составляющих, состав одной из составляющих содержит одну или несколько фаз из следующих возможных, принадлежащих системе Al2O3-В2О3: химические соединения, твердые растворы, эвтектические смеси, состав второй составляющей содержит одну или несколько фаз из следующих возможных, принадлежащих системе Al2O3-В2О3-SiO2: тройные и четверные химические соединения, твердые растворы, эвтектические смеси. 2. Проппант, содержащий одну или несколько фаз из следующих возможных, принадлежащих системе Al2O3 - В2O3: химические соединения, твердые растворы, эвтектические смеси. 3. Проппант, содержащий одну или несколько фаз из следующих возможных, принадлежащих системе Al2O3-В2 O3-SiO2: тройные и четверные химические соединения, твердые растворы, эвтектические смеси. 4. Способ изготовления проппанта, включающий как отдельное, так и совместное измельчение и смешение алюмо- и борсодержащих исходных компонентов, грануляцию сухим или мокрым способом, сушку и ...

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 ...

ГРУБОКЕРАМИЧЕСКИЙ ОГНЕУПОР И ОГНЕУПОРНОЕ ИЗДЕЛИЕ ИЗ НЕГО

... 1. Грубокерамический огнеупор, в основном содержащий ! а) по меньшей мере один зернистый огнеупорный минеральный основный главный компонент из основного огнеупорного сырья, базированного по меньшей мере на одном основном огнеупорном соединении MgO или MgO и CaO, и ! б) по меньшей мере одну зернистую огнеупорную минеральную, базированную на MgO, не содержащую шпинель, придающую эластичность добавку ! б1) в виде форстерит-материала, со следующим гранулометрическим составом: ! 1-6 мм от 50 до 100, в частности от 70 до 80 мас.%; ! 0,25-1 мм от 0 до 50, в частности от 20 до 30 мас.%, ! или ! б2) в виде зернистого компонента из формованных частичек, которые содержат в виде порошковой смеси только сырье для образования форстерита или форстерит-материала в рабочих условиях и имеет зернистость от 0,3 до 8 мм, причем добавка содержится в огнеупоре в количествах, пластифицирующих главный компонент. ! 2. Огнеупор по п.1, отличающийся тем, что главным компонентом является ! магнезия, предпочтительно ...

Формованные абразивные частицы, способы получения и абразивные изделия, включающие их

Изобретение относится к области абразивной обработки. Способ получения абразивных частиц включает изготовление жидкого раствора, включающего неколлоидные твердые частицы и жидкое связующее, формирование по крайней мере части жидкого раствора в формованные тела, контактирующие с субстратом, по крайней мере частичное высушивание формованных тел для обеспечения формованных абразивных частиц прекурсоров, отделение по крайней мере части формованных абразивных частиц прекурсоров от субстрата и преобразование по крайней мере части формованных абразивных частиц прекурсоров в формованные абразивные частицы. Формованные абразивные частицы включают альфа-глинозем со средним размером кристаллического зерна 0,8-8 микрон, при этом альфа-глинозем имеет кажущуюся плотность, которая составляет по крайней мере 92 процента от истинной плотности. Каждая формованная абразивная частица имеет соответствующую поверхность, включающую множество гладких сторон, формирующих по крайней мере четыре вершины. Также изобретены ...

УЛЬТРАЛЁГКИЙ МИНЕРАЛЬНЫЙ ПЕНОМАТЕРИАЛ

ПРИГОДНЫЕ ДЛЯ ПОВЫШЕНИЯ ЭЛАСТИЧНОСТИ ГРУБОКЕРАМИЧЕСКИХ ОГНЕУПОРНЫХ ИЗДЕЛИЙ ОГНЕУПОРНЫЕ ГРАНУЛЯТЫ ШПИНЕЛИ, СПОСОБ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ

СПОСОБ ИЗГОТОВЛЕНИЯ ДЕТАЛИ ИЗ КОМПОЗИТНОГО МАТЕРИАЛА ПОСРЕДСТВОМ САМОРАСПРОСТРАНЯЮЩЕГОСЯ ВЫСОКОТЕМПЕРАТУРНОГО СИНТЕЗА

СПОСОБ ПОЛУЧЕНИЯ ОГНЕУПОРНОГО МАТЕРИАЛА ДЛЯ ПРИМЕНЕНИЯ В ВЕРХНЕМ СТРОЕНИИ ВАННЫХ СТЕКЛОВАРЕННЫХ ПЕЧЕЙ, А ТАКЖЕ СПОСОБ ПОВЫШЕНИЯ СПЕКТРАЛЬНОГО КОЭФФИЦИЕНТА ИЗЛУЧЕНИЯ У ФОРМОВАННЫХ ОГНЕУПОРНЫХ ИЗДЕЛИЙ

МАТРИЦА, СОБИРАЕМАЯ С ПОМОЩЬЮ МАКРОПОРИСТОГО ЗАТВЕРДЕВШЕГО ВЯЖУЩЕГО

... 1. Сборная керамическая матрица, содержащая элементы, плотно скрепленные друг с другом посредством стыка, причем стык и/или периферийное покрытие содержит затвердевшее вяжущее, имеющее в плоскости среза, перпендикулярной, по меньшей мере, к одной из находящихся напротив друг друга сторон элементов, собранных с помощью указанного стыка, поры с эквивалентным диаметром от 200 мкм до 40 мм, называемые ниже «макропорами», в таком количестве, чтобы в указанной плоскости среза суммарная площадь поверхность, занятая указанными макропорами, составляла более 15% и менее 80% наблюдаемой суммарной площади поверхности, причем более 50% макропор имеют эквивалентный диаметр от 500 мкм до 5 мм.2. Матрица по п.1, отличающаяся тем, что затвердевшее вяжущее содержит менее 10% неорганических волокон в мас.% от сухого минерального вещества.3. Матрица по п.1, отличающаяся тем, что затвердевшее вяжущее содержит органические волокна в количестве более 0,1% в мас.% от сухого минерального вещества.4. Матрица по ...

САМОВЫРАВНИВАЮЩАЯСЯ БЕТОННАЯ СМЕСЬ

... 1. Порошок, содержащий в мас.%:(a) от 94% до 99% частиц по меньшей мере одного огнеупорного материала, основным компонентом или компонентами которого являются оксид алюминия и/или диоксид циркония, и/или диоксид кремния;(b) от 1% до 6% гидравлического цемента;(c) от 0 до 0,03% органических волокон;(d) необязательно от 0,075% до 1%, предпочтительно от 0,1% до 1%, поверхностно-активного вещества и(e) необязательно ускоритель схватывания,при этом фракция частиц, обладающих размером менее 40 мкм, распределена в мас.% относительно массы порошка следующим образом:- фракция <0,5 мкм: ≥4%- фракция <2 мкм: ≥5%,- фракция <10 мкм: ≥16%- фракция <40 мкм: 29-45%,и доля диоксида циркония во фракции частиц с размером менее 10 мкм, называемых «мелкими фракциями», находится в диапазоне от 35 мас.% до 75 мас.% относительно общей массы указанной фракции.2. Порошок по п.1, содержащий от 0,075% до 1% поверхностно-активного вещества и/или содержащий ускоритель схватывания.3. Порошок по п.1, в котором доля диоксида ...

ДЕТАЛЬ ИЗ КОМПОЗИЦИОННОГО МАТЕРИАЛА ОКСИД/ОКСИД С ТРЕХМЕРНЫМ УСИЛЕНИЕМ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

ПРОЗРАЧНЫЙ ТКАНЕЭКВИВАЛЕНТНЫЙ ДЕТЕКТОР ИЗЛУЧЕНИЙ НА ОСНОВЕ LiBOДЛЯ ТЕРМИЧЕСКИ ИЛИ ОПТИЧЕСКИ СТИМУЛИРОВАННОЙ ЛЮМИНЕСЦЕНТНОЙ ДОЗИМЕТРИИ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

... 1. Прозрачный тканеэквивалентный детектор излучения на основе LiBOдля термически или оптически стимулированной люминесцентной дозиметрии, содержащий основной материал LiBO, примесь Mn, и связующий материал двуокись кремния SiO,отличающийся тем, что детектор дополнительно содержит побочную примесь, выбранную из группы, состоящей из двухвалентного катиона либо щелочноземельного металла, либо переходного металла с устойчивым состоянием 2+ заряда, и при этом упомянутая побочная примесь не уменьшает прозрачность детектора в диапазоне длин волн 320-750 нм.2. Способ изготовления детекторов по п.1, содержащий этапы, на которых:a) смешивают компоненты исходного реагента детектора, включающие деионизированную воду, борную кислоту НВО, примесь Mn и связующий материал двуокись кремния SiO;b) увеличивают температуру упомянутой смеси до 75-85°С и добавление упомянутой смеси карбоната лития LiCO, чтобы получить основной материал LiBO;c) осуществляют старение, сушку и предварительный обжиг упомянутого ...

УСОВЕРШЕНСТВОВАННЫЙ СПОСОБ ПОЛУЧЕНИЯ ТЕРМОИЗОЛЯЦИОННОГО ПРОДУКТА ИЗ АЭРОГЕЛЯ ДИОКСИДА КРЕМНИЯ С ПОВЫШЕННОЙ ЭФФЕКТИВНОСТЬЮ

Способ изготовлени пенодиатомитовых кирпичей

... 1. Способ изготовления пенодиатомитовых кирпичей, включающий нагрев до максимальной температуры, выдержку в печи и ступенчатое охлаждение, отличающийся тем, что перед нагревом до максимальной температуры и выдержкой в печи, изготовленную и разлитую пенодиатомитовую сырьевую массу в формы, подвергают сушке в печах в течение времени и при температуре достаточных для доведения остаточной влажности пенодиатомитовой сырьевой массы не более 20%, постепенному охлаждению до температуры окружающей среды, затем заготовки кирпичей подвергают распалубке, отбраковке и укладке на вагонетки, после чего заготовки кирпичей нагревают в печах до максимальной температуры в течение 1/3 части времени цикла термообработки, выдерживают при этой температуре в течение следующих 1/3 части времени цикла термообработки, а затем в оставшееся время цикла термообработки выполняют ступенчатое охлаждение до температуры окружающей среды. 2. Способ по п.1, отличающийся тем, что после ступенчатого охлаждения кирпич подвергают ...

МАТЕРИАЛ ДЛЯ ГАЗИФИКАТОРА НА ОСНОВЕ ОКСИДОВ АЛЮМИНИЯ И МАГНИЯ

... 1. Плавлено-литое огнеупорное изделие, имеющее следующий химический состав в массовых процентах в пересчете на оксиды:2. Огнеупорное изделие по п.1, в котором содержание CuO составляет более или равно 0,10 мас.% и менее или равно 0,8 мас.%.3. Огнеупорное изделие по п.2, в котором содержание CuO составляет более или равно 0,15 мас.% и менее или равно 0,7 мас.%.4. Огнеупорное изделие по п.3, в котором содержание CuO составляет более или равно 0,20 мас.% и менее или равно 0,6 мас.%.5. Огнеупорное изделие по п.1, в котором содержание BOсоставляет более или равно 0,05 мас.%.6. Огнеупорное изделие по п.5, в котором содержание BOсоставляет более или равно 0,1 мас.%.7. Огнеупорное изделие по п.1, в котором содержание BOсоставляет менее или равно 0,6 мас.%.8. Огнеупорное изделие по п.7, в котором содержание BOсоставляет менее или равно 0,3 мас.%.9. Огнеупорное изделие по п.1, в котором содержание оксида алюминия AlOсоставляет менее или равно 70 мас.% и более или равно 55 мас.%.10. Огнеупорное изделие ...

ТИГЕЛЬ ДЛЯ КРИСТАЛЛИЗАЦИИ КРЕМНИЯ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

... 1. Тигель (1) для кристаллизации кремния, который содержит ! a) основание (2), имеющее нижнюю поверхность (21) и боковые стенки (22), образующие внутренний объем; ! b) защитное покрытие (3) на базе нитрида кремния, обращенное к внутреннему объему; ! отличающийся тем, что указанное защитное покрытие (3) содержит от 80 до 95 вес.% нитрида кремния, от 5 до 20 вес.% низкотемпературного минерального связующего материала, при полном содержании кислорода в диапазоне от 5 до 15% по весу. ! 2. Тигель по п.1, отличающийся тем, что полное содержание кислорода находится в диапазоне от 8 до 12% по весу. ! 3. Тигель по п.1, отличающийся тем, что защитное покрытие из нитрида кремния (3) имеет толщину от 50 до 500 мкм, преимущественно от 200 до 500 мкм. ! 4. Тигель по п.1, отличающийся тем, что защитное покрытие из нитрида кремния содержит частицы размером ≤1 мкм, ! 5. Тигель по п.4, отличающийся тем, что защитное покрытие из нитрида кремния также содержит более крупные частицы. ! 6. Тигель по п.5, отличающийся ...

ОПТИЧЕСКИЙ ЭЛЕМЕНТ ДЛЯ СВЕТОИЗЛУЧАЮЩЕГО УСТРОЙСТВА И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

... 1. Оптический элемент (3) бокового излучения, содержащий спеченное керамическое тело из первого слоя (4), и второго слоя (5), скомпонованного на упомянутом первом слое (4), в котором упомянутый первый слой (4) содержит конвертирующий длину волны материал, пористость упомянутого второго слоя (5) выше, чем пористость упомянутого первого слоя (4), а поры в упомянутом втором слое (5) скомпонованы для обеспечения рассеяния пучка света, таким образом, что упомянутый световой пучок излучается главным образом с боковой поверхности (7) первого слоя (4). ! 2. Оптический элемент (3) бокового излучения по п.1, в котором отражательная способность упомянутого второго слоя (5) составляет >90%. ! 3. Оптический элемент (3) бокового излучения по п.1 или 2, в котором средний диаметр пор в упомянутом втором слое (5) находится в интервале от 0,1 мкм до 1 мкм. ! 4. Оптический элемент (3) бокового излучения по п.1 или 2, в котором пористость упомянутого первого слоя (4) ниже приблизительно 10%. ! 5. Оптический ...

КЕРАМИЧЕСКОЕ ИЗДЕЛИЕ С ОРИЕНТИРОВАННЫМИ ЧАСТИЦАМИ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

СОДЕРЖАЩЕЕ ГРАФИТ ОГНЕСТОЙКОЕ ИЗДЕЛИЕ, СПОСОБ ЕГО ПОЛУЧЕНИЯ И ЕГО ПРИМЕНЕНИЯ

ПОЛИКРИСТАЛЛИЧЕСКИЕ АБРАЗИВНЫЕ МАТЕРИАЛЫ И СПОСОБ ИХ ИЗГОТОВЛЕНИЯ

... 1. Способ изготовления поликристаллического абразивного элемента, включающий стадии использования множества сверхтвердых абразивных частиц, обладающих витреофильными поверхностями, нанесения на сверхтвердые абразивные частицы покрытия из материала-предшественника матрицы, обработки обладающих покрытием сверхтвердых абразивных частиц, чтобы сделать их пригодными для спекания, и объединения и спекания обладающих покрытием сверхтвердых абразивных частиц при давлении и температуре, при которых они являются кристаллографически или термодинамически стабильными.2. Способ по п.1, в котором обладающие покрытием сверхтвердые абразивные частицы обрабатывают для превращения материала-предшественника матрицы в оксид, нитрид, карбид, оксинитрид, оксикарбид или карбонитрид материала-предшественника матрицы, или в элементную форму материала-предшественника матрицы, или в их комбинации.3. Способ по п.1, в котором материал-предшественник матрицы представляет собой аморфный или нанокристаллический оксид, ...

КЕРАМИЧЕСКИЕ ПАСТЫ, ИМЕЮЩИЕ НЕСТАНДАРТНУЮ РЕЦЕПТУРУ С СОДЕРЖАНИЕМ ФОСФОРА БОЛЕЕ 2 МАС.%, СПОСОБ ИХ ПРИГОТОВЛЕНИЯ И ИХ ПРЕИМУЩЕСТВА

... 1. Керамическая паста, в рецептуру которой входят соединения фосфора в количестве свыше 2%, отличающаяся следующим составом, мас.%: а) от 2 до 80% соединений фосфора, б) от 20 до 98% обезжиривающих материалов, в) от 0 до 80% воды. 2. Керамическая паста по п.1, отличающаяся тем, что указанные соединения фосфора по существу представляют собой соль или сочетание различных солей, выбранных из фосфатов аммония или гидрофосфатов аммония, фосфатов или гидрофосфатов одновалентных элементов, или смеси различных фосфатов аммония и гидрофосфатов и одновалентных элементов. 3. Керамическая паста по п.1 или 2, отличающаяся тем, что помимо указанных выше соединений фосфора в ее рецептуру могут входить фосфаты или гидрофосфаты двухвалентных элементов или элементов с множественной валентностью, включая валентность+2, фосфаты или гидрофосфаты трехвалентных элементов или элементов с множественной валентностью, включая валентность +3, и фосфаты или гидрофосфаты четырехвалентных элементов или элементов с множественной ...

ПРОНИЦАЕМЫЙ ОГНЕУПОРНЫЙ МАТЕРИАЛ ДЛЯ ПРОДУВАЕМОГО ГАЗОМ СОПЛА

... 1. Проницаемый материал, имеющий проницаемость по меньшей мере около 50 cD, представляющий собой связанный смолой материал, который изготовлен из композиции, которая содержит огнеупорный заполнитель; 0,5-15 вес.% по меньшей мере одного газопоглотителя кислорода; и связующее. 2. Проницаемый материал по п.1, в котором огнеупорный заполнитель составляет по меньшей мере 80 вес.% композиции, причем огнеупорный заполнитель содержит по меньшей мере около 60 вес.% заполнителя, имеющего размер частиц +80 меш или больше; меньше, чем 20 вес.% заполнителя, имеющего размер частиц от -80 до +325 меш; и меньше, чем 20 вес.% заполнителя, имеющего размер частиц меньше, чем -325 меш. 3. Проницаемый материал по п.2, в котором огнеупорный заполнитель содержит по меньшей мере один оксид, выбранный из группы, в которую входят оксид алюминия, оксид магния, диоксид кремния, диоксид циркония, оксид кальция, а также их смеси и соединения. 4. Проницаемый материал по одному из пп.1-3, в котором газопоглотитель кислорода ...

FEUERFESTE ZUSAMMENSETZUNGEN

Wässriges Bindemittelsystem für ein Schnellverfahren

HERSTELLUNG EINER KIESELSÄUREHALTIGEN, FEUERFESTEN MASSE

STABILE MISCHUNGEN VON KOLLOIDALER KIESELSAUERE UND FILMBILDENDEM POLYMER

Präkeramische Bor-enthaltende Polymere

Schlichtezusammensetzung für die Gießereiindustrie, enthaltend partikuläres, amorphes Siliziumdioxid und Säure

Es wird eine Schlichtezusammensetzung beschrieben, zur Verwendung in der Gießerei, insbesondere umfassend partikuläres, amorphes Siliziumdioxid (SiO) und eine wässrige Phase mit einem pH-Wert von höchstens 5, sowie geschlichtete, wasserglasgebundene Gießereiformkörper, insbesondere geschlichtete, wasserglasgebundene Gießereiformen und Gießereikerne, welche jeweils eine erfindungsgemäße Schlichtezusammensetzung umfassen. Weiter wird beschrieben die Verwendung einer erfindungsgemäßen Schlichtezusammensetzung zur Herstellung eines Überzugs auf einem wasserglasgebundenen Gießereiformkörper und ein Verfahren zur Herstellung eines mit einer wasserhaltigen Schlichte geschlichteten wasserglasgebundenen Gießereiformkörpers (Form oder Kern). Ebenfalls wird angegeben ein Kit, u.a. enthaltend eine erfindungsgemäße Schlichtezusammensetzung.

Selbsthaertender Formstoff zur Herstellung von Giessformen und Giesskernen

Keramischer Verbundwerkstoff.

Zinkoxid-Sinterkörper und Verfahren zur Herstellung desselben

Plättchenförmiger Zinkoxid-Sinterpressling, enthaltend 0,80 Gew.-% oder weniger mindestens ein erstes Dotierungselement, ausgewählt aus der Gruppe, bestehend aus Al, Ga und In, wobei der Rest im Wesentlichen aus ZnO besteht, wobei die (002)-Ebenenorientierung in der Platten-Oberfläche 60% oder mehr ist.

VERFAHREN ZUR HERSTELLUNG EINER LICHTEMPFINDLICHEN KERAMISCHEN ZUSAMMENSETZUNG UND MEHRSCHICHTIGES SUBSTRAT DAMIT

Gesinterte Cordierit-Keramik und Verfahren zur Herstellung derselben

KORROSIONSBESTÄNDIGES ELEMENT

Ein korrosionsbeständiges Element gemäß der Offenbarung weist eine Aluminiumoxid-Keramik auf, welche α-Aluminiumoxid und Anorthit enthält. Die Aluminiumoxid-Keramik enthält, bezogen auf die Masse, in Summe 0,4% oder mehr von Ca und Si in Form von CaO bzw. SiO, und ein Massenverhältnis von CaO/SiOfällt in einen Bereich von 0,5 bis 2. Darüber hinaus ist ein Verhältnis B/A einer Röntgenbeugungsspitzenintensität B für die (004)-Ebene des Anorthits zu einer Röntgenbeugungsspitzenintensität A für die (104)-Ebene des α-Aluminiumoxids in einer Oberfläche der Aluminiumoxid-Keramik 0,01 oder mehr.

Festelektrolytkörper für Gassensorelement, dessen Herstellungsverfahren und Gassensorelement

Ein Festelektrolytkörper für ein Gassensorelement (1), das durch die Festelektrolytpartikel (2) gebildet wird, die aus Zirconiumdioxid hergestellt sind, das einen Stabilisator enthält, eine Festelektrolytphase (M) aufweist, in welcher eine große Anzahl der Festelektrolytkörperpartikel aggregiert werden, und in der Festelektrolytphase Paare der Festelektrolytpartikel, die aneinander angrenzen, keine Partikelgrenzflächen-Verunreinigungsschicht zwischen ihren Partikelgrenzflächen (21) aufweisen, und die Partikelgrenzflächen einander direkt kontaktieren.

HERSTELLUNGSVERFAHREN EINES WABENFILTERS ZUR REINIGUNG VON ABGAS

Mehrschichtige keramische Platine, Verfahren zu ihrer Herstellung und ihre Anwendung.

Feuerfestes keramisches Material und zugehöriges Formteil und Masse

Feuerfestes keramisches Material der Zusammensetzung: a) 30 bis 66,5 M.-% MgO b) 10 bis 52,5 M.-% Al2O3 c) 5 bis 35,0 M.-% Cr2O3 d) 0 bis 5 M.-% sonstige Bestandteile mit a) + b) + c) + d) = 100 M.-%, dessen Gefüge zu 45 bis 95 M.-% aus einer MAC (MgOAl2O3Cr2O3) Spinellphase der Zusammensetzung e) 20 bis 28 M.-% MgO f) 17 bis 67 M.-% Al2O3 g) 6 bis 62 M.-% Cr2O3 h) 0 bis 5 M.-% sonstige Bestandteile und zu 5 bis 55 M.-% mindestens aus einer weiteren Gefügephase besteht, wobei Zusammensetzungen ausgeschlossen werden, die im Dreistoffsystem MgO-Al2O3-Cr2O3 innerhalb eines Bereichs liegen, der durch folgende Eckpunkte definiert ist, soweit sich dieser Bereich mit der Zusammensetzung gemäß a) bis d) überschneidet: A' = 53 Gew.-% MgO, 44 Gew.-% Al2O3 und 3 Gew.-% Cr2O3 A'' =...

Sizing liquids, useful for the production of a high temperature-stable coating, comprises at least a nanoscale inorganic binder system, boron nitride and at least a solvent

Sizing liquids for the production of a high temperature-stable coating comprises at least a nanoscale inorganic binder system, boron nitride and at least a solvent. INDEPENDENDANT CLAIMS are included for: (1) a method for the preparation of a high temperature-stable coating of metallic-, ceramic-, enamel- and/or glass- surfaces, comprising applying the sizing liquid on a surface and solidifying the applied mixture through heating; (2) a method for repairing a high temperature-stable coating of metallic-, ceramic-, enamelled- and/or glass- surfaces, comprising repairing the damaged coating by partial or complete application of the sizing liquid on the damaged coating and solidifying through heating; and (3) a high temperature-stable coating, which is obtained by the above method.

Abgasreinigungsfilter und Verfahren zu dessen Herstellung

Ein Verfahren zum Herstellen eines Abgasreinigungsfilters zum Einfangen von Partikeln zum Reinigen von Abgasen wird bereitgestellt. Ein ein organisches Bindemittel enthaltender Keramikwerkstoff wird in ein Wabenstück extrusionsgegossen, und das so gegossene Wabenstück wird dann getrocknet und auf eine vorbestimmte Länge geschnitten, sodass ein gegeossenes Wabenstück 100 vorbereitet ist, das Zwischenwände 11 und eine Vielzahl von Zellen 12 von im Wesentlichen dreieckigem Querschnitt aufweist. Große, bei Betrachtung von vorne im Wesentlichen sechseckige Öffnungen, werden durch das Verformen der Zwischenwände 11 bei Öffnungen 13 in den Zellen 12 des gegossenen Wabenstücks 100 bereitgestellt und geschlossene Abschnitte werden so angrenzend an die großen Öffnungen bereitgestellt. Danach wird das gegossene Wabenstück 100 kalziniert.

Verfahren zum Beschichten einer keramischen Wabenstruktur und Überzugsmaterial für die keramische Wabenstruktur

Verfahren zum Beschichten der äußeren Peripherie einer keramischen Wabenstruktur mit mehreren Zellen, die durch poröse keramische Trennwände voneinander getrennt sind, wobei das Verfahren: einen Beschichtungsmaterial-Einstellschritt zum Erhalt eines Beschichtungsmaterials durch Mischen von zumindest Wasser mit einem Keramikpulveraggregat mit nur einem Peak in einer Teilchengrößenverteilungskurve, einer durchschnittlichen Teilchengröße von 23 bis 39 m und einer Teilchengrößenverteilungsbreite von 15 bis 33, für den Fall, dass die Teilchengrößenverteilungsbreite eines Pulvers als ein Wert definiert ist, der durch Teilen der Halbwertsbreite der Peakhöhe in einer Teilchengrößenverteilungskurve, erhalten durch Plotten der Teilchengrößen-basierenden Häufigkeit, durch die Peakhöhe erhalten wird; einen Beschichtungsmaterial-Auftragungsschritt zum Auftragen des Beschichtungsmaterials zum Bedecken der äußeren Peripherie der Wabenstruktur; und einen Beschichtungsmaterial-Wärmetrocknungsschritt zum ...

KORROSIONSBESTAENDIGES GUSSFAEHIGES FEUERFESTGEMISCH

VERFAHREN ZUR HERSTELLUNG EINES FEUERFESTEN MATERIALS

Finely divided alpha-alumina powder, especially useful as a polishing additive in magnetic recording media, includes silicon, zirconium, phosphorus and/or boron oxide and titanium, iron and/or chromium oxide

Alumina powder with an average primary particle diameter of 10-100 nm and an alpha-alumina content of at least 90% (measured by X-ray diffraction) includes 0.1-10 wt.% silicon, zirconium, phosphorus and/or boron oxide and 0.1-30 wt.% titanium, iron and/or chromium oxide. An Independent claim is also included for producing an alpha-alumina powder by calcining a mixture of an aluminum-containing substance, a particle growth retardant and seed crystals in an atmosphere in which the partial pressure of water vapor is 600 Pa or less.

Mn-Zn Ferrit und Spulenbestandteil mit Mn-Zn- Ferritkern

Process for preparing a doping element metal oxide powder for ceramic zinc oxide varistors

The invention relates to a process for preparing a metal oxide powder containing the doping elements for a ceramic varistor based on doped zinc oxide. In this process, compounds of the required doping elements in the intended stoichiometric ratio are first mixed together with a zinc compound in an amount of not more than two tenths of the zinc oxide required in the varistor to give a common aqueous homogeneously dispersed solution and this is then subjected to spray pyrolysis. The metal oxide powder contains crystalline phases having a spinel and/or pyrochlore structure.

MAHLKUGELN UND HERSTELLUNGSVERFAHREN DAFÜR

Verglaster SiO 2 -Formkörper, Verfahren zu seiner Herstellung und Vorrichtung

Verfahren zur Herstellung eines in einem Teilbereich oder vollständig verglasten SiO2-Formkörpers, bei dem ein amorpher poröser SiO2-Grünkörper durch ein kontaktloses Erwärmen mittels einer Strahlung gesintert oder verglast wird und dabei eine Kontamination des SiO2-Formkörpers mit Fremdatomen vermieden wird, dadurch gekennzeichnet, dass als Strahlung der Strahl eines Lasers bei einem Unterdruck unter 1000 mbar eingesetzt wird.

New spinnable mass, obtained by reacting aluminum triacylate with carbonic acid and mixing with silicon dioxide containing solution, useful for preparing green fibers and/or ceramic fibers based on aluminum oxide

Spinnable mass (I) (obtained by reacting aluminum triacylate with carbonic acid, which can displace the acylate group of the aluminum triacylate, to form solution or suspension and mixing the solution or suspension with silicon dioxide containing sol or gel as far as the fibers should contain silicon dioxide), for preparing green fibers and/or ceramic fibers based on aluminum oxide or aluminum oxide-silicon dioxide, is new. An independent claim is also included for the preparation of (I).

PIEZOELEKTRISCHE KERAMIK

Ungeformte, feuerfeste Massen

Verfahren zur Herstellung eines Gegenstandes zumindest teilweise mit Siliziumkarbidgefüge aus einem Rohling aus einem kohlenstoffhaltigen Material

Die Erfindung betrifft ein Verfahren zur Herstellung eines Gegenstandes zumindest teilweise mit Siliziumkarbidgefüge aus einem Rohling aus einem kohlenstoffhaltigen Material, wobei in einem ersten Schritt der Gegenstand aus dem kohlenstoffhaltigen Material im Wesentlichen gemäß seiner gewünschten Endform und/oder Endmaße hergestellt wird und anschließend der Gegenstand aus dem kohlenstoffhaltigen Material mit einem kohlenstoffreichen Siliziumdioxid-Granulat zumindest bereichsweise umhüllt und in dieser Umhüllung in einer Schutzgasatmosphäre bei einer Glühtemperatur mindestens einmal geglüht wird, wobei das Siliziumdioxid-Granulat silizium-karbidhaltiges Gas abgibt, das in den Gegenstand eindringt und das kohlenstoffhaltige Material teilweise oder ganz in Siliziumkarbid umwandelt.

Dielectric material and capacitor comprising the dielectric material

A dielectric material suitable for use in an electronic component includes bismuth ferrite (BiFeO3); strontium titanate (SrTiO3) and an additive of barium titanate (BaTiO3). The barium titanate reduces the temperature capacitance change of the dielectric material and allows for increased working voltages. The material is useful for the construction of capacitors, and particularly capacitors intended for use at high temperatures. Also provided are a capacitor including the dielectric material, methods of manufacturing the dielectric material and the capacitor, and the use of an additive to improve the lifetime and/or reduce the dissipation factor of a capacitor. The capacitor 100 comprises a first electrode 12, a second electrode 14 and a capacitive layer 16 of the dielectric material. The dielectric material can be formed into the capacitive layer 16 by sintering a powder or sintering a slurry containing the powder.

Preparation method for high-density hexagonal boron nitride ceramic material

A preparation method for a high-density hexagonal boron nitride (hBN) ceramic material. The method adopts ethyl orthosilicate as a raw material to coat a uniformly dispersed SiO2 nano-particle layer onto the surface of an hBN powder, then obtains the high-density hBN ceramic material by adopting a pressureless sintering method, wherein the relative density of the prepared hBN ceramic material reaches not less than 80%. The method achieves the uniform dispersion of the SiO2 sintering aid by coating SiO2 onto the surface of the hBN powder, obtains the high-density hBN ceramic in combination with high-temperature pressureless sintering, and improves the high-temperature operating temperature and high-temperature properties of the hBN while reducing the usage amount of SiO2.

PROCESS FOR MAKING REFRACTORY LININGS

... 1434662 Moulding linings in receptacles J E GARREAU and G H GARREAU 14 Feb 1974 [2 March 1973] 6719/74 Heading B5A [Also in Division F4] A refractory lining 6 for a receptacle such as a casting ladle, crucible or electric furnace 1 is made by placing a former 8 therein and supplying the space therebetween with a quartzitebased material containing 0À5-1À5% by weight of at least one thermosetting agent, compacting the material and preheating it after compaction at a temperature between 100-280‹ C., removing the former and heating the material to bake it. The agent may be a phenol-formaldehyde resin and the material may contain 0À1-2% by weight of a fluxing agent for silica. The furnace shown includes a metallic jacket 1 with a safety lining 3 and induction coils 14. Material is fed from a spout 4 to form a lining base compacted by vibration; the former 8 composed of separable parts 8a, 8b, 8c is placed on the base and further material supplied to form the wall which is vibrated by means 11 ...

CERAMIC CORE MOLDING COMPOSITION

Investment casting binder comprising colloidal silicas

A binder for making an investment casting mould comprises an aqueous dispersion of a mixture of colloidal silicas having average particle diameters of 4, 8 and 13 nanometers preferably in amounts 20-70 wt%, 10-40 wt% and 10-40 wt% respectively. The binders may also contain latex polymers and/or water soluble polymers in amount 0.25-20 wt%. In another embodiment the binder has a solids content of greater than 15% and comprises silica particles at least 30% of which have an average diameter less than 4nm. The moulds have high green strength and low fired strength.

Silicon carbide fibers essentially devoid of whiskers and method for preparation thereof

Semiconductive ceramic positive temperature coefficient thermistor for degaussing degaussing circuit and method for manufacturing semiconductive ceramic

In a semiconductive ceramic which has a positive resistance temperature characteristic and is used as a degaussing thermistor element, the current attenuation characteristic is slowly changed without increasing the size of the element by setting a resistance temperature coefficient in the range of from about 10 to 17.

An additive used in forming ceramic articles by slip casting

Ceramic articles are formed from a slip casting composition consisting of a suspension in water comprising a particulate solid mixture of a kaolinitic clay, a fluxing material, a siliceous material and a dispersing agent for the particulate solid mixture, wherein the particulate solid mixture is substantially free of smectite clay and the kaolin clay is treated before being incorporated into the solid mixture with a water-soluble polyamine having a number average molecular weight not less than 100,000. Preferably the molecular weight of the polymer is not greater than 1,000,000. The polymer is not used at greater than 0.5%, based on the weight of the dry kaolinitic clay, preferably in the range from 0.05% to 0.4%. The polyamine may be quaternised so that it is in the form of a polyquaternary ammonium salt.

CERAMIC CORE MOLDING COMPOSITION

Dielectric ceramic composition and laminated ceramic condenser

Creating layers in thin-film structures

Polycrystalline diamond cutting elements having improved thermal resistance

Polycrystalline diamond constructions are disclosed which have a polycrystalline diamond body and a substrate attached thereto, wherein the diamond body has a material microstructure comprising a plurality of bonded-together diamond crystals forming a polycrystalline matrix phase, and second phase formed from different types of materials or sintering aids designed to reduce or eliminate the amount of free Group VIII elements therein. The materials used to combine or react with Group VIII elements include Cr, Mn, Ti, Zr, Hf, V, Nb, Mo, W, Ta and alloys thereof. The sintering aids may comprise Pd, Fe, Co, Ni, Mn, Ti, TiO2, Si, alkali earth metals, alkaline earth metals, rare earth elements and O. Thus the sintering aids may be titanates, SiO2 or complex oxides. The use of such materials and the reduction and/or elimination of free Group VIII elements, in addition to graphitization, facilitates the sintering the construction at high pressure/high temperature conditions, e.g., greater than ...

MONOLITHIC REFRACTORY MIX

Monolithic refractory mixes useful in forming linings for receptacles and related components used to handle or treat molten metal, such as ladles, tundishes, troughs and runners, comprise refractory aggregate, calcium aluminate cement (1-4 wt%) and finely divided silica (0.5-20 wt%) having a surface area between 0.1-100 square meters/gram, a particle size range between 0.1-1 micron and a mean particle size between 0.2-0.8 micron.

Dielectric ceramic composition and capacitor using the same

Refractory composition

A composition for use in the manufacture of thermally insulating refractory articles comprises a biogenic silica material. The composition also includes a fibrous material and a binding agent. The biogenic silica material is substantially devoid of cristobalite. In one embodiment of the invention the fibrous material is a mineral fibre. For preference, this silica is formed from calcined rice husks and the binder is either starch or a phenolic resin.

Spark plug

A spark plug exhibits a satisfactory withstand voltage characteristic and sufficient mechanical strength in a high temperature environment exceeding 700° C. The spark plug has a center electrode, an insulator, and a ground electrode, characterized in that the insulator is formed of an alumina-based sintered material containing an Si component, a Group 2 element (2A) component, and a rare earth element (RE) component; that the alumina-based sintered material has an RE-β-alumina crystal phase; and that the mean crystal grain size D A (RE) of the RE-β-alumina crystal phase and that of alumina D A (Al) satisfy the following relationship (1): 0.2≦D A (RE)/D A (Al)≦3.0.

Articles comprising phyllosilicate composites containing mica

Disclosed is a mica paper composite and a process for making the mica paper composite. Articles comprising the mica paper composite are also disclosed.

Synthesis of nanocomposite thermoelectric material

A process for forming thermoelectric nanoparticles includes the steps of forming a core material reverse micelle or micelle, adding a bismuth containing compound to the core material reverse micelle or micelle forming a reverse micelle or micelle having the bismuth containing compound dispersed therein, adding a tellurium containing compound with the formed micelle or reverse micelle in the presence of a reducing agent that alloys with the bismuth containing compound forming composite thermoelectric nanoparticles having a core and shell structure, and washing the core and shell nanoparticles in a solvent mixture including ammonium hydroxide, water and methanol wherein the core and shell nanoparticles remain un-agglomerated and have a particle size of from 1-25 nanometers.

Highly zirconia-based refractory and melting furnace

A highly zirconia-based refractory suitable for an electric melting furnace, which has a high electrical resistivity and does not exhibit a chipping off phenomenon and which is scarcely susceptible to extraction of components even when in contact with molten low alkali glass and, hence, is less susceptible to cracking during operation. The highly zirconia-based refractory that includes, as chemical components by mass %, from 85 to 95% of ZrO 2 in terms of inner percentage, from 3.0 to 10% of SiO 2 in terms of inner percentage, from 0.85 to 3.0% of Al 2 O 3 in terms of inner percentage, substantially no Na 2 O, from 0.01 to 0.5% of K 2 O in terms of outer percentage, from 1.5 to 3.0% of SrO in terms of inner percentage, and from 0.1 to 2.0% of Nb 2 O 5 and/or Ta 2 O 5 as a value obtained by [(Nb 2 O 5 content)+(Ta 2 O 5 content/1.66)], in terms of inner percentage.

Refractory product with high zirconia content

A fused and cast refractory product including, in mass percentages on the basis of the oxides and for a total of 100% of the oxides: ZrO 2 + Hf 2 O: balance to 100%; SiO 2 :  7.0% to 11.0%; Al 2 O 3 : 0.2% to 0.7%; Na 2 O + K 2 O: <0.10%; B 2 O 3 : 0.3% to 1.5%; CaO + SrO + MgO + ZnO + BaO:  <0.4%; P 2 O 5 : <0.15%; Fe 2 O 3 + TiO 2 : <0.55%; Other oxide species:  <1.5%; the mass content of a dopant selected from Nb 2 O 5 , Ta 2 O 5 and mixtures thereof being of less or equal to 1.0%, and the A/B ratio of the Al 2 O 3 /B 2 O 3 mass contents being less than or equal to 2.0.

Process And Apparatus For Manufacturing Ceramic Honeycombs

Methods and apparatus for making ceramic honeycombs by steps including compounding a plasticized ceramic batch mixture and forming the mixture into ceramic honeycombs by continuous extrusion, drying and firing, wherein one or more ceramic powders for the batch mixture are supplied by in-line homogenization as a powder feed having a median particle size D 50 that varies from a maximum value to a minimum value by an amount not exceeding 15% of the maximum value during a 24-hour period of continuous extrusion.

Refractory material with stainless steel and organic fibers

A refractory includes a cement, a binder and a matrix. The matrix comprises both stainless steel fibers and organic fibers. The refractory can be easily cast, without additional steel reinforcement, into large fire wall 16 panels 10 capable of meeting the requirements of testing conducted in accordance with ASTM E-119, Standard Test Methods for Fire Tests of Building Construction and Materials in support of IEEE Std. 979-1994, Guide for Substation Fire Protection . The fire wall 16 assembly withstood the fire endurance test without passage of flame and gases hot enough to ignite cotton waste during a four-hour fire exposure. The assembly also withstood a 45 psi water stream for five minutes immediately following the four-hour fire exposure period. This is a stringent mechanical requirement, as all fire walls 16 must maintain their integrity before, during and after a fire, per the Universal Building Code's definition of a true fire wall 16.

Self-Toughened High-Strength Proppant and Methods Of Making Same

Methods are described to make strong, tough, and lightweight whisker-reinforced glass-ceramic composites through a self-toughening structure generated by viscous reaction sintering of a complex mixture of oxides. The present invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.

Piezoelectric ceramic, method for producing same, and piezoelectric device

Disclosed is a piezoelectric ceramic which is characterized by containing [K 1-x Na x ] 1-y Li y [Nb 1-z-w Ta z Sb w ]O 3 (wherein x, y, z and w each represents a molar ratio and satisfies 0≦x≦1, 0≦y≦1, 0≦z≦1, 0≦w≦1) as the main phase and K 3 Nb 3 O 6 Si 2 O 7 as a sub-phase, while containing, as an additive, a Cu compound in an amount of 0.02-5.0 mol in terms of CuO relative to 100 mol of the main phase.

Low expansion corrosion resistant ceramic foam filters for molten aluminum filtration

A ceramic foam filter for molten aluminum alloys comprising an alumina silicate rich core and a boron glass shell and a chemical composition comprising: 20-70 wt % Al 2 O 3 , 20-60 wt % SiO 2 , 0-10 wt % CaO, 0-10 wt %; MgO and 2-20 wt % B 2 O 3 .

Refractory material impregnated with phase change material, method for making the same, and temperature controlled chamber formed by the same

The present invention is directed to methods for forming heat absorbing bodies (and the resulting heat absorbing bodies and enclosures formed thereby) that utilize capillary action to draw a fluidic composition comprising a molten phase change material (PCM) into the interstitial spaces of a porous body of a refractory material. In one embodiment, the fluidic composition saturates substantially all of the interstitial spaces of a porous body of a fibrous ceramic refractory material.

Method for producing perovskite type composite oxide

A method is provided which includes a reaction step of reacting at least titanium oxide, a calcium compound, and barium hydroxide in a slurry solution so as to produce a perovskite-type composite oxide. The perovskite-type composite oxide is represented by (Ba 1-x Ca x ) m TiO 3 , and x is within a range of 0<x≦0.125. In addition, the method provides a perovskite-type composite oxide in which a water-soluble calcium compound is used as the calcium compound, and when the perovskite-type composite oxide is represented by (Ba 1-x Ca x ) m TiO 3 , x is within a range of 0<x≦0.20.

Dielectric ceramic composition and ceramic electronic device

A dielectric ceramic composition comprises barium titanate as a main component, and as subcomponents, 1.00 to 2.50 moles of an oxide of Mg, 0.01 to 0.20 mole of an oxide of Mn and/or Cr, 0.03 to 0.15 mole of an oxide of at least one element selected from a group consisting of V, Mo and W, 0.20 to 1.50 mole of an oxide of R1 where R1 is at least one selected from a group consisting of Y and Ho, 0.20 to 1.50 mole of an oxide of R2 where R2 is at least one selected from a group consisting of Eu, Gd and Tb and 0.30 to 1.50 mole of an oxide of Si and/or B, in terms of each oxide with respect to 100 moles of the barium titanate.

Coating compositions

Silicon nitride coated crucibles for holding melted semiconductor material and for use in preparing multicrystalline silicon ingots by a directional solidification process; methods for coating crucibles; methods for preparing silicon ingots and wafers; compositions for coating crucibles and silicon ingots and wafers with a low oxygen content.

Ceramic Honeycomb Structure Skin Coating

A porous ceramic (honeycomb) structure skin coating and a method of producing a porous ceramic structure skin coating which provides a hardshell, strong, acid- and alkali-resistant, chip-resistant ceramic honeycomb structure coating which resists pollution control catalyst from being absorbed into the skin coating.

Process for producing ceramics fired body

The present invention aims to provide a process for producing a fired body with a high linear shrinkage ratio during firing (firing shrinkage ratio) without a damage of the shape of the shaped body, such as the honeycomb structure. The present invention is a process for producing a ceramics fired body comprising a step of firing a shaped body, wherein a linear shrinkage ratio in dimension of the fired body to the shaped body (the linear shrinkage ratio (%)=(dimension of the shaped body−dimension of the fired body)/(dimension of the shaped body)×100) is not lower than 1% and the shaped body is fired while being disposed on a mat made of a ceramics having a high thermal conductivity.

Alpha-alumina inorganic membrane support and method of making the same

Compositions for making alpha-alumina supports for, for example, inorganic membranes are described. Methods for controlling the alumina and pore former particle sizes and other process variables are described which facilitate desirable porosity, pore distribution and strength characteristics of the resulting alpha-alumina inorganic membrane supports.

Filtering structure, including plugging material

Filter structure of the honeycomb type for filtering particulate-laden gases, said structure being characterized in that: a) the filtering walls of said honeycomb structure are made of a material having, after firing, an average thermal expansion coefficient, measured between 25 and 1100° C., of less than 2.5×10 −6 K −1 ; and b)the material constituting the plugs comprises: a filler formed from refractory grains, the melting temperature of which is above 1500° C., and the median diameter of which is between 5 and 50 microns; and a glassy binder phase.

Process for producing zinc oxide varistor

A process for producing zinc oxide varistors possessed a property of breakdown voltage (V1mA) ranging from 230 to 1,730 V/mm is to perform the doping of zinc oxide and the sintering of zinc oxide grains with a high-impedance sintered powder through two independent procedures, so that the doped zinc oxide and the high-impedance sintered powder are well mixed in a predetermined ratio and then used to make the zinc oxide varistors through conventional technology by low-temperature sintering (lower than 900° C.); the resultant zinc oxide varistors may use pure silver as inner electrode and particularly possess breakdown voltage ranging from 230 to 1,730 V/mm.

Phosphor composite member, led device and method for manufacturing phosphor composite member

Provided is a phosphor composite member having excellent thermal resistance, high color rendition, controllability of various chromaticities from a daylight color to a light bulb color, and high luminescence intensity. A phosphor composite member in which a sintered inorganic powder body layer containing a SnO—P 2 O 5 -based glass and an inorganic phosphor powder is formed on a surface of a ceramic base material, wherein upon irradiation with an excitation light, the ceramic base material and the sintered inorganic powder body layer emit different fluorescences having different wavelengths.

Process for production of honeycomb structure, honeycomb structure, and particulate filter

A method of manufacturing a honeycomb structure comprises a step of forming a molded article by molding a raw material containing a ceramic powder and a pore-forming agent; and a step of manufacturing a honeycomb structure by sintering the molded article, wherein the pore-forming agent is powder formed of a material that disappears at a sintering temperature or less where the molded article is sintered, the powder is obtained by mixing a small particle size powder and a large particle size powder, a median particle size of which a ratio of a cumulative mass with respect to a total mass of the small particle size powder is 50% is 5 to 20 μm, a median particle size of which a ratio of a cumulative mass with respect to a total mass of the large particle size powder is 50% is 30 μm or more, and a ninety-percentage particle size of which a ratio of a cumulative mass with respect to a total mass of the large particle size powder is 90% is 80 μm or less.

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.

Dielectric composition and ceramic electronic component including the same

There is provided a dielectric composition including: a base powder; a first accessory component including a content (x) of 0.1 to 1.0 at % of an oxide or a carbonate including transition metals, based on 100 moles of the base powder; a second accessory component including a content (y) of 0.01 to 5.0 at % of an oxide or a carbonate including a fixed valence acceptor element, based on 100 moles of the base powder; a third accessory component including an oxide or a carbonate including a donor element; and a fourth accessory component including a sintering aid.

Solid electrolyte material and lithium battery

A main object of the present invention is to provide a Li—La—Zr—O-based solid electrolyte material having favorable denseness. The present invention solves the problem by providing a solid electrolyte material including Li, La, Zr, Al, Si and O, having a garnet structure, and being a sintered body.

Refractory powder comprising coated mullite grains

A powder is disclosed having a coarse fraction representing more than 60% and less than 85% of the powder, as a weight percentage on the basis of the oxides, and that is constituted of particles having a size greater than or equal to 50 μm, referred to as “coarse particles”, the powder comprising at least 5% of coated grains having a size greater than or equal to 50 μm, as a weight percentage on the basis of the oxides of the powder, and a fine fraction, forming the balance to 100% as a weight percentage on the basis of the oxides, constituted of particles having a size of less than 50 μm, referred to as “matrix particles”. The powder can be applied in combustion chambers in which the temperature may reach 1400° C.

Electrostatic chuck

There is provided an electrostatic chuck an electrostatic chuck in which it is hard for the power of suppressing residual adsorption to deteriorate over time. There is provided an electrostatic chuck including an insulating substrate, and an adsorption electrode, wherein a region which includes at least an upper face of the insulating substrate containing Mn is made of ceramics containing a first transition element composed of at least one of Fe and Cr, and a ratio C2/C1 of a content C2 (mol) of the first transition element to a content C1 (mol) of Mn contained in the insulating substrate is 1 or more.

Method of forming ceramic coatings and ceramic coatings and structures formed thereby

A method of forming a ceramic coating, the resulting ceramic coating, and structures produced by forming the ceramic coating on a ceramic fiber shape. The method includes forming an aqueous mixture containing water, an alumino-silicate precursor, and a dispersion of a ceramic fiber material. The alumino-silicate precursor contains a colloidal suspension of silica particles, silica fume particles, and micron-sized and submicron-sized alumina particles. The ceramic fiber material includes micron-sized and submicron-sized ceramic fibers. The aqueous mixture is applied to a surface of a ceramic fiber shape, after which the aqueous mixture is cured to form a ceramic coating that contains the ceramic fiber material dispersed in an alumino-silicate matrix.

Fluorescent member and light emitting module

In a plate-shaped fluorescent member configured to convert the wavelength of the light emitted by a semiconductor light emitting element, the fluorescent member is formed of an inorganic material having a refractive index of 1.5 or more and a light transmittance at the emission peak wavelength of the semiconductor light emitting element of less than 20%. A concave portion is formed, of the surfaces of the fluorescent member, on the surface on the side where the light in the semiconductor light emitting element is mainly emitted. In the fluorescent member, the light transmittance of the light having a wavelength of 380 nm to 500 nm may be less than 20%. The concave portion may be a groove. The concave portion may be a plurality of holes that are scattered.

Semiconductive ceramic sintered compact

There is provided a semiconductive ceramic sintered compact that has a conductivity high enough to attain static electricity removal and antistatic purposes and, at the same time, has excellent mechanical properties or stability over time. The semiconductive ceramic sintered compact includes a main phase and a conductive phase present between the main phases, wherein the main phase is a ceramic sintered phase including Al 2 O 3 particles, the area ratio of the conductive phase to the main phase is 0% (exclusive) to 10% (inclusive), and the conductive phase includes two or more metals selected from Mn (manganese), Fe (iron), and Ti (titanium) and has a composition meeting a relation of Mn/(Ti+Mn+Fe)>0.08 or Mn/Ti>0.15.

High zirconia fused cast refractory

To provide a high zirconia fused cast refractory which hardly has cracks, and has excellent durability and reusability, at the time of production of the refractory and during use for a glass melting furnace. A high zirconia fused cast refractory which has a chemical composition comprising from 85 to 95 mass % of ZrO 2 , at least 2.5 mass % of SiO 2 , at most 0.04 mass % of Na 2 O, at most 0.04 mass % of B 2 O 3 , and at most 0.04 mass % of P 2 O 5 , containing SrO as an essential component, and containing at least one of K 2 O and Cs 2 O, wherein contents of SrO, K 2 O and Cs 2 O satisfy the relations of the following formula (1) and (2) at the same time: 0.20≦[0.638×C K2O +0.213×C Cs2O +0.580×C SrO ]/C SiO2 ≦0.40   (1) 0.10≦0.580×C SrO /C SiO2   (2)

Sintered body and cutting tool

A sintered body containing alumina crystal particles and zirconia crystal particles as main components includes the tetragonal crystal particles as the zirconia crystal particles. The zirconia crystal particles satisfy relations 0%≦A≦3%, 3%≦B≦22% and 77%≦C≦96%, where A, B and C are as defined herein.

Electronic component element housing package

An electronic component element housing package is produced by firing a ceramic substrate for housing an electronic component element and a metal layer for bonding to the ceramic substrate to form an electrical path, simultaneously in a reducing atmosphere. The ceramic substrate comprises alumina (Al 2 O 3 ), a partially stabilized zirconia by forming solid solution with yttria (Y 2 O 3 ) and a sintering agent. The sintering agent comprises magnesia (MgO), and at least 1 type selected from silica (SiO 2 ), calcia (CaO), or manganese oxides (MnO, MnO 2 , Mn 2 O 3 , Mn 3 O 4 ).

Reactor Components

The present disclosure relates to insulation components and their use, e.g., in regenerative reactors. Specifically, a process and apparatus for managing temperatures from oxidation and pyrolysis reactions in a reactor, e.g., a thermally regeneratating reactor, such as a regenerative, reverse-flow reactor is described in relation to the various reactor components.

Ceramic powder and multi-layer ceramic capacitor

A ceramic powder that contains, as a main composition, barium titanate powder having a perovskite structure with an average particle size (median size) of 200 nm or smaller as measured by SEM observation, wherein the barium titanate powder is such that the percentage of barium titanate particles having twin defects in the barium titanate powder is 13% or more as measured by TEM observation and that its crystal lattice c/a is 1.0080 or more. The ceramic powder has a wide range of optimum sintering temperatures and thus offers excellent productivity and is particularly useful in the formation of thin dielectric layers of 1 μm or less.

Process for preparing cellular inorganic monolithic materials and uses of these materials

A process is provided for preparing an inorganic material in the form of an alveolar monolith of a silica matrix where the monolith includes interconnected macropores. The process includes at least one step of mineralizing an oil-in-water emulsion formed from droplets of an oily phase dispersed in a continuous aqueous phase and in which colloidal solid particles are present at the interface formed between the continuous aqueous phase and the dispersed droplets of oily phase. Such materials obtained according to this process may be used, especially for separative chemistry and filtration, for performing chemical reactions catalysed in heterogeneous phase, as thermal or phonic insulators, or as templates for manufacturing controlled-porosity carbon skeletons.

Sputtering target and manufacturing method thereof, and transistor

One object is to provide a deposition technique for forming an oxide semiconductor film. By forming an oxide semiconductor film using a sputtering target including a sintered body of a metal oxide whose concentration of hydrogen contained is low, for example, lower than 1×10 16 atoms/cm 3 , the oxide semiconductor film contains a small amount of impurities such as a compound containing hydrogen typified by H 2 O or a hydrogen atom. In addition, this oxide semiconductor film is used as an active layer of a transistor.

Method and apparatus for sintering flat ceramics

A method and apparatus for sintering flat ceramics using a mesh or lattice is described herein.

Alumina sintered body, abrasive grains, and grindstone

Provided are an alumina sintered compact containing a titanium compound and an iron compound, wherein FeTiAlO 5 grains exist in the grain boundary of the alumina grains and the mean grain size of the FeTiAlO 5 grains is from 3.4 to 7.0 μm; and an abrasive grain and a grain stone using the alumina sintered compact.

Alumina sintered body, abrasive grains, and grindstone

Provided are an alumina sintered compact containing a titanium compound and an iron compound, wherein the total amount of the TiO 2 -equivalent content of the titanium compound, the Fe 2 O 3 -equivalent content of the iron compound and the alumina content is at least 98% by mass, the total amount of the TiO 2 -equivalent content of the titanium compound and the Fe 2 O 3 -equivalent content of the iron compound is from 5 to 13% by mass, and the ratio by mass of the TiO 2 -equivalent content of the titanium compound to the Fe 2 O 3 -equivalent content of the iron compound (TiO 2 /Fe 2 O 3 ) is from 0.85/1.15 to 1.15/0.85; and an abrasive grain and a grain stone using the alumina sintered compact.

Piezoelectric porcelain composition

Provided is a Sr 2-x Ca x NaNb 5 O 15 type piezoelectric ceramic composition wherein the inhibition of cracking and an improvement in the piezoelectric characteristics are attained by improving the composition uniformity and the microstructure uniformity. In the basic Sr 2-x Ca x NaNb 5 O 15 composition, the (Sr, Ca)/Na ratio is changed, whereby the occupancies of Sr, Ca and Na in lattices which constitute the tungsten-bronze type structure and into which Sr, Ca, and Na can enter are reduced to facilitate the entrance of Sr into the lattices and thus inhibit the formation of a secondary phase. Further, a predetermined amount of Al and/or Si is added to lower the sintering temperature and to make the microstructure uniform. Additionally, a predetermined amount of Mn is added to make the polarization easy.

Oxide sintered body and sputtering target

Provided are an oxide sintered body and a sputtering target which are suitable for use in producing an oxide semiconductor film for display devices and combine high electroconductivity with a high relative density and with which it is possible to form an oxide semiconductor film having a high carrier mobility. In particular, even when used in production by a direct-current sputtering method, the oxide sintered body and the sputtering target are less apt to generate nodules and have excellent direct-current discharge stability which renders long-term stable discharge possible. This oxide sintered body is an oxide sintered body obtained by mixing zinc oxide, tin oxide, and an oxide of at least one metal (M metal) selected from the group consisting of Al, Hf, Ni, Si, Ga, In, and Ta, and sintering the mixture, the oxide sintered body having a Vickers hardness of 400 Hv or higher.

Highly efficient method for producing ceramic microparticles

Provided is a more suitable method for producing ceramic microparticles. The present invention uses at least two types of fluids to be processed; at least one of the fluids to be processed is a fluid containing a ceramic starting material liquid that mixes and/or dissolves a ceramic starting material in a basic solvent; of the fluids aside from the ceramic starting material liquid, at least one of the fluids to be processed is a fluid containing a solvent for precipitating ceramic microparticles; and ceramic microparticles are precipitated by mixing the fluid containing the ceramic starting material liquid and the fluid containing the solvent for precipitating ceramic microparticles within a thin film fluid formed between at least two surfaces ( 1,2 ) for processing that are provided facing each other, are able to approach and separate each other, and of which one is able to rotate with respect to the other. Ceramic microparticles having as increased crystallinity are obtained by mixing the fluid containing the precipitated ceramic microparticles precipitate and a fluid containing an acidic substance.

Porous carbon product with layer composite structure, method for producing same and use thereof

Inexpensive product consisting of porous carbon, with a pore structure which is suitable for retaining electrode parts which can be used in particular for a use as an electrode material for a lithium-sulphur secondary battery, and a method comprising the following method steps: (a) providing a template consisting of inorganic material which contains spherical nanoparticles and pores, (b) infiltrating the pores of the template with a precursor for carbon of a first variety, (c) carbonizing so as to form an inner layer on the nanoparticles with a first microporosity, (d) infiltrating the remaining pores of the template with a precursor substance for carbon of a second variety, (e) carbonizing the precursor substance, wherein an outer layer with a second microporosity which is lower than the first microporosity is produced on the inner layer, and (f) removing the template so as to form the carbon product with layer composite structure, comprising an inner layer consisting carbon with a first, relatively high microporosity, which has a free surface facing a cavity, and an outer layer consisting of carbon with a second, relatively low microporosity, which has a free surface facing away from the cavity.

Calcium titanate containing mold compositions and methods for casting titanium and titanium aluminide alloys

The disclosure relates generally to mold compositions comprising calcium aluminate and calcium titanate. The disclosure also relates to methods of molding and the articles so molded using the mold compositions. More specifically, the disclosure relates to calcium aluminate/calcium titanate mold compositions and methods for casting titanium-containing articles, and the titanium-containing articles so molded.

Honeycomb structure

A honeycomb structure 100 has a plurality of flow paths 110 a and 110 b which are partitioned by partition walls 120 and are substantially parallel to each other; and one end of the flow path 110 a is plugged by a plugging part 130 at one end surface 100 a of the honeycomb structure 100 , and one end of the flow path 110 b is plugged by a plugging part 130 at the other end surface 100 b of the honeycomb structure 100 , wherein, in an image of the partition walls 120 obtained by X-ray CT measurement, when the number of communicating holes detected when resolution of the image is 1.5 μm/pixel is defined as X, and the number of communicating holes detected when resolution of the image is 2.5 μam/pixel is defined as Y, Y/X is 0.58 or more.

White emitting light source and luminescent material

The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b(MN)*c(SiN4/3)*d1CeO3/2*d2 EuO*xSiO2*yAlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.

Joint of metal material and ceramic-carbon composite material, method for producing same, carbon material joint, jointing material for carbon material joint, and method for producing carbon material joint

Provided are a joint of a metal material and a ceramic-carbon composite material which can be used at high temperatures, a method for producing the same, a novel carbon material joint, a jointing material for a carbon material joint, and a method for producing a carbon joint. A joint 6 of a metal material 4 and a ceramic-carbon composite material 1 is a joint of a metal material 4 made of metal and a ceramic-carbon composite material 1. The ceramic-carbon composite material 1 includes a plurality of carbon particles 2 and a ceramic portion 3 made of ceramic. The ceramic portion 3 is formed among the plurality of carbon particles 2. The metal material 4 and the ceramic-carbon composite material 1 are joined through a joining layer 5. The joining layer 5 contains a carbide of the metal and the ceramic.

Method and apparatus for treating waste materials

A method and apparatus for treating waste materials comprising, particulating the waste materials into discrete particles, heating and drying the particles in a non-oxidizing atmosphere in a drier at a temperature in the range of 800° to 860° C. for carbonizing the particles, crushing the carbonized particles and leaching the crushed carbonized particles in an acid solution for dissolution of heavy metals into the solution, separating the leach solution containing heavy metal from the carbonized particles, adding to the carbonized particles particulate sodium hydroxide, silica, feldspar and limestone in a ratio of 100:0.3-0.5:8-12:2-4, mixing said particles with 15 to 18% by weight water to form a wet mixture and continuously extruding the wet mixture to form an elongated continuous extrusion, severing the elongated extrusion into blocks or planks of predetermined length, drying the blocks or planks and heating the dried blocks or planks in a kiln at a temperature in the range of 1200° to 1300° C. for a time sufficient in an oxygen deficient atmosphere to sinter the blocks or planks and to form carbides, and separating and recovering CO 2 gas from combustion gases in the kiln.

COATING COMPOSITION FOR THE FOUNDRY INDUSTRY, CONTAINING PARTICULATE, AMORPHOUS SILICON DIOXIDE AND ACID

A coating composition is described, for use in the foundry, in particular comprising particulate, amorphous silicon dioxide (SiO) and an aqueous phase having a pH of at most 5, and also coated, waterglass-bound foundry molding elements, especially coated, waterglass-bound foundry molds and foundry cores, which each comprise a coating composition of the invention. Further described is the use of a coating composition of the invention for producing a coating on a waterglass-bound foundry molding element and a method for producing a waterglass-bound foundry molding element (mold or core) coated with a water-containing refractory coating. Likewise specified is a kit whose contents include a coating composition of the invention. 1. The method of a coating composition comprising(a) an aqueous phase having a pH of at most 5,(b) particulate, amorphous silicon dioxide, and(c) one or more further refractories,for producing a coating on a waterglass-bound mold or a waterglass-bound core, for use in the foundry.2. The method as claimed in claim 1 ,where the primary particles of the particulate, amorphous silicon dioxide of constituent (b) (i) are spherical and/or (ii) possess a D90<10 μm, determined by laser diffraction,where preferably the primary particles of the particulate, amorphous silicon dioxide of constituent (b) (i) are spherical and possess a sphericity of 0.9 or more, determined by evaluation of two-dimensional microscope images.3. The method as claimed in claim 1 ,where the constituent (c) comprises one or more substances selected from the group consisting of quartz, aluminum oxide, zirconium dioxide, aluminum silicates, phyllosilicates, zirconium silicates, olivine, talc, mica, graphite, coke, feldspar, diatomite, kaolins, calcined kaolins, metakaolinite, iron oxide, and bauxite,and/orwhere the constituent (a) comprises one or more acids, preferably having a pKa<5, more preferably having a pKa<4, which are selected from the group consisting of inorganic and ...

Method for the production of a part made from a composite material

A method of fabricating a composite part, includes forming a fiber preform for the part that is to be obtained by depositing a plurality of fiber structures impregnated with a thermoplastic polymer onto a surface, with deposition being performed by automated fiber placement; eliminating the thermoplastic polymer present in the preform by dissolution with a solvent; and injecting a liquid impregnation composition into the pores of the fiber preform after eliminating the thermoplastic polymer in order to form a matrix in the pores of the fiber preform.

REFRACTORY COMPOSITIONS AND IN SITU ANTI-OXIDATION BARRIER LAYERS

A refractory composition for forming a working lining in a metallurgical vessel contains a coarse-grain refractory particle fraction and a fine-grain refractory particle fraction, or at least 0.25% additive calcium oxide, or at least 0.25% titanium dioxide. The coarse-grain refractory particles can include alumina particles, magnesia particles, magnesium aluminate spinel particles, zirconia particles, or doloma particles, or a combination of any of these particles. The fine-grain refractory particles can be comprised of any low-magnesia refractory oxide. The refractory composition can be applied to a metallurgical vessel by spraying, gunning, shotcreting, vibrating, casting, troweling, or positioning preformed refractory shapes, or a combination of any of these techniques. When contacted by molten metal, the molten metal penetrates into the refractory material, wetting the coarse-grain refractory particles, and forming a refractory-metal composite barrier layer that decreases or blocks oxygen transport through the refractory lining. 123-. (canceled)25. The refractory composition of claim 24 , comprising claim 24 , in percent by total mass of the refractory composition:at least 50.0% coarse-grain refractory particles; andat least 25.0% low-magnesia oxide, fine-grain refractory particles.26. The refractory composition of claim 24 , wherein the coarse-grain refractory particles are essentially free of silica.27. The refractory composition of claim 24 , wherein the composition is essentially free of iron oxide.28. The refractory composition of claim 24 , wherein the coarse-grain refractory particles are essentially free of calcium oxide claim 24 , olivine claim 24 , and silica.29. The refractory composition of claim 24 , wherein the coarse-grain refractory particles comprise alumina particles having a particle size of at least 300 micrometers (+48 mesh).30. The refractory composition of claim 24 , comprising claim 24 , in percent by total mass of the refractory ...

CERAMIC MATERIAL AND METHOD OF PREPARING THE SAME

A ceramic material, including: BaWO-xMCO-yBaO-zBO-wSiO, where x=0-0.2 mole, y=0-0.05 mole, z=0-0.2 mole, w=0-0.1 mole, M represents an alkali metal ion selected from Li, K, Na, and x, y, z, and w are not zero at the same time. 1. A ceramic material , comprising: BaWO-xMCO-yBaO-zBO-wSiO , wherein x=0-0.2 mole , y=0-0.05 mole , z=0-0.2 mole , w=0-0.1 mole , M represents an alkali metal ion selected from Li , K , Na , and x , y , z , and w are not zero at the same time.2. A method , comprising:{'sub': 3', '3', '2', '3', '2', '3', '2', '4', '2', '3', '2', '3', '2, 'sup': +', '+', '+, '1) weighing and mixing BaCO, WO, MCO, BOand SiObased on a chemical formula BaWO-xMCO-yBaO-zBO-wSiO, wherein x=0-0.2 mole, y=0-0.05 mole, z=0-0.2 mole, w=0-0.1 mole, M represents an alkali metal ion selected from Li, K, Na, and x, y, z, and w are not zero at the same time, to yield a first powder;'}2) mixing the first powder obtained in 1), zirconia balls, and deionized water according to a mass ratio of 1:5:1-2, ball-milling for 4-7 h, drying at 80-120° C., sieving with a 40-60 mesh sieve, calcining in air atmosphere at 700-900° C. for 2-4 h, to yield a second powder;3) mixing the second powder obtained in 2), zirconia balls, and deionized water according to a mass ratio of 1:5:1-2, ball-milling for 3-6 h, drying, to yield a third powder, and adding a binder to the third powder; and4) compression molding a resulting product obtained in 3) under a pressure of 20 megapascal, drying at 400-500° C. and sintering at 850° C.-900° C. for 0.5-2 h.3. The method of claim 2 , wherein the binder is an acrylic solution. Pursuant to 35 U.S.C. § 119 and the Paris Convention Treaty, this application claims foreign priority to Chinese Patent Application No. 201910603226.3 filed Jul. 5, 2019, the contents of which, including any intervening amendments thereto, are incorporated herein by reference. Inquiries from the public to applicants or assignees concerning this document or the related applications ...

ZIRCONIA COMPOSITION, ZIRCONIA SEMI-SINTERED BODY AND ZIRCONIA SINTERED BODY, AS WELL AS DENTAL PRODUCT

There are provided zirconia composition, zirconia semi-sintered body and zirconia sintered body, and dental product in which defect-generation is suppressed and transparency varies. The zirconia sintered body contains 4 mol % to 7 mol % of yttria as stabilizer. The zirconia sintered body contains shielding material. The zirconia sintered body comprises first region and second region having a higher content ratio of the shielding material than the first region. Difference between content ratio of yttria in the first region and that of yttria in the second region is 1 mol % or less. 1. A partially stabilized zirconia sintered body , comprising 4 mol % to 7 mol % of yttria as a stabilizer ,whereinthe zirconia sintered body comprises a light shielding material,the zirconia sintered body has a first region, and a second region having a higher content ratio of the light shielding material than the first region, anda difference between a content ratio of yttria in the first region and a content ratio of yttria in the second region is 1 mol % or less.2. The zirconia sintered body according to claim 1 , wherein:L * value of color degree in L * a * b * color system measured on white background is defined as first L * value,L * value of color degree in L * a * b * color system measured on black background is defined as second L * value, andin a case where a value calculated by subtracting the second L * value from the first L * value is defined as ΔL , ΔL of the first region is larger than ΔL of the second region.3. The zirconia sintered body according to claim 2 , wherein ΔL of the first region is by 0.8 or more larger than ΔL of the second region.4. The zirconia sintered body according to claim 2 , wherein ΔL of the first region is 8 to 12 and ΔL of the second region is 4 to 11.5. The zirconia sintered body according to claim 2 , wherein ΔL of the second region is 7.5 or less.6. The zirconia sintered body according to claim 2 , wherein the first region and the second region ...

LIGHT-TRANSMITTING CERAMIC SINTERED BODY AND METHOD FOR PRODUCING SAME

The present invention relates to a light-transmitting ceramic sintered body which contains air voids having pore diameters of 1 μm or more but less than 5 μm at a density within the range of from 10 voids/mmto 4,000 voids/mm(inclusive), while having a closed porosity of from 0.01% by volume to 1.05% by volume (inclusive). With respect to this light-transmitting ceramic sintered body, a test piece having a thickness of 1.90 mm has an average transmittance of 70% or more in the visible spectrum wavelength range of 500-900 nm, and the test piece having a thickness of 1.90 mm has a sharpness of 60% or more at a comb width of 0.5 mm. 1. A light-transmitting ceramic sintered body containing air bubbles each having a pore size of 1 μm or more and less than 5 μm in an amount of 10 bubbles/mmor more and 4 ,000 bubbles/mmor less , and having a closed porosity of 0.01 vol % or more and 1.05 vol % or less; andhaving an average transmittance of a test specimen of the light-transmitting ceramic sintered body having a thickness of 1.90 mm of 70% or more with respect to a visible spectrum with a wavelength of 500 to 900 nm, and a clarity in a comb width of 0.5 mm of a test specimen of the light-transmitting ceramic sintered body having a thickness of 1.90 mm of 60% or more.2. A light-transmitting ceramic sintered body containing air bubbles each having a pore size of 1 μm or more and less than 5 μm in an amount of 10 bubbles/mmor more and 4 ,000 bubbles/mmor less , and having a closed porosity of 0.01 vol % or more and 1.05 vol % or less; andhaving an average transmittance of a test specimen of the light-transmitting ceramic sintered body having a thickness of 0.80 mm of 74% or more with respect to a visible spectrum with a wavelength of 500 to 900 nm, and a clarity in a comb width of 0.5 mm of a test specimen of the light-transmitting ceramic sintered body having a thickness of 0.80 mm of 75% or more.3. A light-transmitting ceramic sintered body containing air bubbles each having ...

Monolithic base and production method therefor

The monolithic base is a porous alumina body that includes pores and that is configured by alumina particles as an aggregate and an oxide phase as a binding material. The alumina particles include microscopic alumina particles having a particle diameter of greater than or equal to 0.5 μm and less than or equal to 5 μm and coarse alumina particles having a particle diameter of greater than 5 μm. The number of microscopic alumina particles that are encapsulated in the oxide phase is greater than or equal to 50% of the total number of microscopic alumina particles and coarse alumina particles.

IMPROVED PROCESS FOR PRODUCING SILICA AEROGEL THERMAL INSULATION PRODUCT WITH INCREASED EFFICIENCY

The invention relates to an improved method for producing silica aerogel in pure and flexible sheet form having effective suppression of radiative heat transport at high temperatures and increased thermal insulation property. The suppression of radiative heat transport was achieved by in-situ production of titanium dioxide nanoparticles in very minor concentrations during gelation of silica precursor, with nanoporous surface area more than 300 m2/g and acts as an infra red reflecting agent. When aerogel is subjected to heat during hot object insulation, it automatically turn into infra red reflecting material. Said silica aerogel can be incorporated into the inorganic fibre mat matrix individually or into two or more layers with organic sponge sheet placed in between and stitched together to form a sandwich sheet to form highly insulating flexible sheet. 118.-. (canceled)19. A method for preparation of a silica aerogel thermal insulation product , the method comprising:(a) preparing a hydro-alcoholic solution containing at least one alkali;(b) adding a solution of a metal oxide precursor to the hydro-alcoholic solution to form a dispersion effecting in-situ formation and precipitation of nanoparticles of at least one metal oxide, wherein the metal oxide precursor comprises one or more metals selected from the group consisting of iron, manganese, magnesium, zirconium, zinc, chromium, cobalt, titanium, tin, and indium;(c) mixing at least one silica precursor with the dispersion to form a first mixture;(d) stirring the first mixture to obtain a viscous mixture with the nanoparticles entrapped therewithin;(e) aging the viscous mixture to form an aged viscous mixture; and(f) effecting supercritical drying of the aged viscous mixture, to obtain the silica aerogel thermal insulation product.20. The method of claim 19 , wherein the at least one silica precursor is selected from the group consisting of tetraethylorthosilicate claim 19 , tetramethylorthosilicate claim 19 , ...

MULTI-ZONE SILICON NITRIDE WAFER HEATER ASSEMBLY HAVING CORROSION PROTECTIVE LAYER, AND METHODS OF MAKING AND USING THE SAME

A wafer heater assembly comprises a heater substrate and a non-porous outermost layer. The heater substrate comprises silicon nitride (SiN) and includes at least one heating element embedded therein. The non-porous outermost layer is associated with at least a first surface of the heater substrate. The non-porous outermost layer comprises a rare-earth (RE) disilicate (RESiO); where RE is one of Yb and Y. The non-porous outermost layer includes an exposed surface configured to contact a wafer for heating, the exposed surface opposite the first surface of the heater substrate. Methods of making wafer heater assemblies are also disclosed as well as methods of using the wafer heater assembly. 1. A wafer heater assembly , the assembly comprising:{'sub': 3', '4, 'a heater substrate comprising silicon nitride (SiN), the heater substrate including at least one heating element embedded therein, the heater substrate having a first surface; and'}{'sub': 2', '2', '7, 'a non-porous outermost layer associated with the first surface of the heater substrate, the non-porous outermost layer comprising a rare-earth (RE) disilicate (RESiO), wherein RE is one of Yb and Y; and the non-porous outermost layer having an exposed surface opposite the first surface, the exposed surface configured to contact a wafer for heating.'}2. The wafer heater assembly of claim 1 , wherein the rare-earth disilicate of the non-porous outermost layer comprises ytterbium disilicate (YbSiO).3. The wafer heater assembly of claim 2 , wherein the non-porous outermost layer comprises between at least about 95 volume percent and about 100 volume percent of the rare earth disilicate having a Keiviite crystal structure.4. The wafer heater assembly of claim 2 , wherein the rare earth disilicate non-porous outermost layer and the silicon nitride heater substrate further include an interface therebetween claim 2 , and the interface is characterized as having between about 0 volume percent and at most about 5 volume ...

INCREASED RESONANT FREQUENCY ALKALI-DOPED Y-PHASE HEXAGONAL FERRITES

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material, such as Y-phase hexagonal ferrite material, and methods of manufacturing. In some embodiments, sodium or potassium can be added into the crystal structure of the hexagonal ferrite material in order to achieve improved resonant frequencies in the range of 500 MHz to 1 GHz useful for radiofrequency applications. 1. (canceled)2. A method for increasing the resonant frequency of a hexagonal ferrite material , the method comprising:providing a Y phase hexagonal ferrite material having a strontium site and a crystal structure of an intergrowth between a magnetoplumbite and a spinel crystal structure;doping the Y phase hexagonal ferrite material with sodium, potassium, or other univalent alkali metal on the strontium site; anddoping the Y phase hexagonal ferrite material with scandium or indium for charge compensating with the sodium, potassium, or other univalent alkali metal to form a doped Y phase hexagonal ferrite material.3. The method of claim 2 , wherein the Y phase hexagonal ferrite material includes Sr claim 2 , a metal claim 2 , Fe claim 2 , and O.4. The method of claim 3 , wherein the metal is Co.5. The method of claim 3 , wherein aluminum is added into the crystal structure of the Y phase hexagonal ferrite material to replace the Fe.6. The method of claim 5 , wherein the doped Y phase hexagonal ferrite material has a composition SrCoFeAlOor Sr(K claim 5 ,Na)CoMFeAlO claim 5 , M being the scandium or the indium.7. The method of claim 6 , wherein the doped Y phase hexagonal ferrite material has the composition SrNaCoScFeAlOor SrNaCoScFeAlO.8. The method of claim 2 , wherein the indium or the scandium are located on a cobalt site of the Y phase hexagonal ferrite material.9. The method of claim 2 , further including adding silica into the crystal structure of the Y phase hexagonal ferrite material.10. The method of claim 2 , further including adding silicon into the ...

HONEYCOMB SHAPED POROUS CERAMIC BODY, MANUFACTURING METHOD FOR SAME, AND HONEYCOMB SHAPED CERAMIC SEPARATION MEMBRANE STRUCTURE

There are disclosed a honeycomb shaped porous ceramic body to manufacture a honeycomb shaped ceramic separation membrane structure in which a separation performance does not deteriorate under a higher operation pressure than before, a manufacturing method for the porous body, and a honeycomb shaped ceramic separation membrane structure. The honeycomb shaped ceramic separation membrane structure includes a honeycomb shaped substrate , an intermediate layer , an alumina surface layer , and a separation layer . The structure has the alumina surface layer on the intermediate layer , whereby even when the insides of the cells are pressurized, cracks are not easily generated in a porous body or the separation layer and the deterioration of the separation performance does not easily occur. 1. A honeycomb shaped porous ceramic body comprising:a honeycomb shaped substrate which has partition walls made of a porous ceramic material provided with a large number of pores and in which there are formed a plurality of cells to become through channels of a fluid passing through the porous ceramic body by the partition walls;an intermediate layer which is made of a porous ceramic material provided with a large number of pores and having an average pore diameter smaller than that of the surface of the substrate and which is disposed at the surface of the substrate; andan alumina-containing alumina surface layer at the outermost surface of the intermediate layer.2. The honeycomb shaped porous ceramic body according to claim 1 ,wherein the alumina surface layer is formed of alumina particles having particle diameters of 0.4 to 3 μm.3. The honeycomb shaped porous ceramic body according to claim 1 ,wherein the alumina surface layer includes a magnesium component.4. The honeycomb shaped porous ceramic body according to claim 2 ,wherein the alumina surface layer includes a magnesium component.5. The honeycomb shaped porous ceramic body according to claim 1 ,wherein the alumina surface ...

Catalytic extruded, solid honeycomb body

An extruded, solid honeycomb body comprises a copper-promoted, small pore, crystalline molecular sieve catalyst for converting oxides of nitrogen in the presence of a reducing agent, wherein the crystalline molecular sieve contains a maximum ring size of eight tetrahedral atoms, which extruded, solid honeycomb body comprising: 20-50% by weight matrix component comprising diatomaceous earth, wherein 2-20 weight % of the extruded, solid honeycomb body is diatomaceous earth; 80-50% by weight of the small pore, crystalline molecular sieve ion-exchanged with copper; and 0-10% by weight of inorganic fibres.

CASTABLE REFRACTORY COMPOSITION

A castable refractory composition may include from 5% to 95% by weight of alumina, aluminosilicate, or mixtures thereof; from 0.5% to 1.5% by weight alkaline earth metal oxide and/or hydroxide, and 0.1% to 5% by weight of silica having a surface area of at least about 10 m/g. The refractory composition may include no more than 0.5% by weight of cementitious binder. The refractory composition may release less than 25 cmof hydrogen gas per kilogram of castable refractory composition upon addition of water. The refractory compositions may set on addition of water. 118-. (canceled)19. A castable refractory composition comprising:5% to 95% by weight of alumina, aiuminosilicate, or mixtures thereof;from 0.5% to 1.5% by weight alkaline earth metal oxide and/or hydroxide; and{'sup': '2', '0.1% to 5% by weight of silica having a surface area of at least about 10 m/g;'}wherein the refractory composition includes no more than 0.5% by weight of cementitious binder;{'sup': '3', 'wherein the refractory composition releases less than 25 cmof hydrogen gas per kilogram of castable refractory composition upon addition of water; and'}wherein the refractory compositions sets on addition of water.201. A castable refractory composition according to claim , further 0.01% to 3% by weight solid powdered organic additives ,211. A castable refractory composition according to claim , further comprising 0.01% to 3% by weight soluble mineral additives.221. A castable refractory composition according to claim , further comprising up to about 1% by weight of metallic additives.231. A castable refractory composition according to claim , further comprising up to about 5% by weight of an additive or combination of additives which suppress or prevent the oxidation of carbon.241. A castable refractory composition according to claim , further comprising up to 0.5% by weight of organic fibers.251. A castable refractory composition according to claim , wherein the alumina , aluminosilicate or mixture ...

DIELECTRIC CERAMIC COMPOSITION AND MULTILAYER CERAMIC CAPACITOR CONTAINING THE SAME

There are provided a dielectric ceramic composition and a multilayer ceramic capacitor containing the same. The dielectric ceramic composition may contain a base material powder represented by (CaSr)(ZrTi)O(0≦x≦1.0 and 0.3≦y≦0.8). A multilayer ceramic capacitor may include a ceramic body in which dielectric layers and first and second internal electrodes are alternately stacked, wherein the dielectric layers contain a dielectric ceramic composition containing a base material powder represented by (CaSr)(ZrTi)O(0≦x≦1.0 and 0.3≦y≦0.8). 1. A dielectric ceramic composition comprising a base material powder represented by (CaSr)(ZrTi)O(0≦x≦1.0 and 0.3≦y≦0.8).2. The dielectric ceramic composition of claim 1 , further comprising 0.2 to 4.0 at % of a first accessory ingredient including at least one of Mn claim 1 , V claim 1 , Cr claim 1 , Fe claim 1 , Ni claim 1 , Co claim 1 , Cu claim 1 , and Zn claim 1 , based on 100 at % of the base material powder.3. The dielectric ceramic composition of claim 2 , wherein the first accessory ingredient includes oxide or carbonate.4. The dielectric ceramic composition of claim 1 , further comprising 4.0 at % or less of a second accessory ingredient including at least one of Y claim 1 , Dy claim 1 , Ho claim 1 , La claim 1 , Ce claim 1 , Nd claim 1 , Sm claim 1 , Gd claim 1 , and Er claim 1 , based on 100 at % of the base material powder.5. The dielectric ceramic composition of claim 4 , wherein the second accessory ingredient includes oxide or carbonate.6. The dielectric ceramic composition of claim 1 , further comprising 0.5 to 4.0 at % of a third accessory ingredient including Si claim 1 , based on 100 at % of the base material powder.7. The dielectric ceramic composition of claim 6 , wherein the third accessory ingredient includes oxide claim 6 , carbonate claim 6 , or glass compound.8. The dielectric ceramic composition of claim 1 , wherein a permittivity of the dielectric ceramic composition is constant with a variable electric ...

OXIDE BASED CERAMIC MATRIX COMPOSITES

A method of making a ceramic matrix composites (CMC) having superior properties at high temperatures. The CMC can include a sol gel mixture mixed or blended metal oxide particles. The sol-gel mixture can be an aqueous colloidal suspension of a metal oxide, preferably from about 10 wt % to about 25 wt % of the metal oxide, containing a metal oxide such as alumina (AlO), silica (SiO) or alumina-coated silica. The mixture can be infiltrated into a ceramic fiber, gelled, dried and sintered to form the CMC of the present teachings. 1. A method of forming a ceramic composite , comprising:mixing a water based mixture that does not have a polymer by mixing (1) alumina particles having a size range of 0.1 to 1.0 micrometers, including submicron particles with (2) an aqueous colloidal suspension sol-gel having about 10 wt % to about 25 wt % of silica, alumina, or alumina coated silica, the sol-gel having particles having a size in a range of 4 to 150 nanometers wherein the formed mixture has 40 wt % to about 70 wt % sol-gel and about 30 wt % to about 60 wt % alumina particles;completely infiltrating a fabric consisting essentially of a ceramic fiber with the mixture of the sol-gel and the alumina particles;draping the fabric on a tool to form one or more layers of an infiltrated fabric into a shape;rigidifying the infiltrated fabric on the tool by curing the infiltrated fabric so that the infiltrated fabric maintains the shape after the tool is removed, wherein the curing the infiltrated fabric on the tool comprises autoclaving the infiltrated fabric while the infiltrated fabric is on the tool, and wherein the curing the infiltrated fabric includes subjecting the infiltrated fabric while placed on the tool to a vacuum bag cure to apply 30-100 psi at a temperature of about 350 degrees Fahrenheit;after rigidifying the infiltrated fabric in the shape, removing the tool from the infiltrated fabric and maintaining in the infiltrated fabric the shape; andheat treating the ...

A Heating Element

The present disclosure relates to a heating element comprising at least two parts which are composed of different molybdenum disilicide-based compositions, wherein at least one of the molybdenum disilicide-based parts is based on a chromium-alloyed based molybdenum disilicide composition ((MoCr)Siwhere x is of from 0.05 to 0.25); and at least one part is based on a molybdenum disilicide-based composition comprising more than or equal to weight % Mo(Si,Al)The present disclosure also relates to the use of the heating element. 1. A heating element composed of at least two molybdenum disilicide-based parts{'sub': 1-x', 'x', '2, 'wherein at least one of the molybdenum disilicide-based parts is based on a molybdenum disilicide-based composition having more than or equal to 90 weight % of (MoCr)Siwhere xis of from 0.05 to 0.25; and'}{'sub': '2', 'wherein at least one of molybdenum disilicide-based parts is based on a molybdenum disilicide-based composition comprising more than or equal to 90 weight % Mo(Si,Al).'}2. The heating element according to claim 1 , wherein the heating element consists of two molybdenum disilicide-based parts.3. The heating element according to claim 1 , wherein the heating element consists of three molybdenum disilicide-based parts wherein two parts of the are based on the same molybdenum disilicide-based composition and one part is based on another molybdenum disilicide-based composition.4. The heating element according to claim 3 , wherein two parts are based on a molybdenum disilicide-based composition having more than or equal to 90 weight % of (MoCr)Siwhere xis of from 0.05 to 0.25; and one part is based on a molybdenum disilicide-based composition comprising more than or equal to 90 weight % Mo(Si claim 3 ,Al).5. The heating element according to claim 1 , wherein the heating element consists of four molybdenum disilicide-based parts and wherein two parts of the heating element are based on a molybdenum disilicide-based composition having ...

ION BEAM SPUTTERING WITH ION ASSISTED DEPOSITION FOR COATINGS ON CHAMBER COMPONENTS

An article comprises a body and a conformal protective layer on at least one surface of the body. The conformal protective layer is a plasma resistant rare earth oxide film having a thickness of less than 1000 μm, wherein the plasma resistant rare earth oxide is selected from a group consisting of YF, ErAlO, ErAlO, and a ceramic compound comprising YAlOand a solid-solution of YO—ZrO. 1. An article comprising:a body; and{'sub': 3', '4', '2', '9', '3', '4', '2', '9', '2', '3', '2, 'a conformal protective layer on at least one surface of the body, wherein the conformal protective layer is a plasma resistant rare earth-containing film having a thickness of less than 1000 μm, wherein a porosity of the conformal protective layer is less than 1%, and wherein the plasma resistant rare earth-containing film is selected from a group consisting of YF, ErAlO, ErAlO, and a ceramic compound comprising YAlOand a solid-solution of YO—ZrO.'}2. The article of claim 1 , the conformal protective layer having been formed by ion beam sputtering with ion assisted deposition.3. The article of claim 1 , wherein the conformal protective layer has a thickness of 0.2-20 μm.4. The article of claim 1 , wherein the porosity of the conformal protective layer is below 0.1%.5. The article of claim 1 , wherein the plasma resistant rare earth-containing film comprises the ceramic compound comprising YAlOand the solid-solution of YO—ZrO claim 1 , wherein the ceramic compound has a composition of 40 mol % to less than 100 mol % of YO claim 1 , over 0 mol % to 60 mol % of ZrO claim 1 , and over 0 mol % to 9 mol % of AlO.6. The article of claim 1 , wherein the plasma resistant rare earth-containing film comprises the ceramic compound comprising YAlOand the solid-solution of YO—ZrO claim 1 , wherein the ceramic compound has a composition of 40-60 mol % of YO claim 1 , 31-50 mol % of ZrO claim 1 , and 10-20 mol % of AlO.7. The article of claim 1 , wherein the plasma resistant rare earth-containing film ...

ION BEAM SPUTTERING WITH ION ASSISTED DEPOSITION FOR COATINGS ON CHAMBER COMPONENTS

An article comprises a body and a conformal protective layer on at least one surface of the body. The conformal protective layer is a plasma resistant rare earth oxide film having a thickness of less than 1000 μm, wherein the plasma resistant rare earth oxide film is selected from a group consisting of an Er—Y composition, an Er—Al—Y composition, an Er—Y—Zr composition, and an Er—Al composition. 1. An article comprising:a body; anda conformal protective layer on at least one surface of the body, wherein the conformal protective layer is a plasma resistant rare earth oxide film having a thickness of less than 1000 μm, wherein a porosity of the conformal protective layer is less than 1%, and wherein the plasma resistant rare earth oxide film has a composition selected from a group consisting of an Er—Y oxide composition, an Er—Al—Y oxide composition, an Er—Y—Zr oxide composition, and an Er—Al oxide composition.2. The article of claim 1 , wherein the plasma resistant rare earth oxide film comprises the Er—Y composition claim 1 , and wherein the Er—Y oxide composition comprises 80 wt % ErOand 20 wt % YO.3. The article of claim 1 , wherein the plasma resistant rare earth oxide film comprises the Er—Al—Y composition claim 1 , and wherein the Er—Al—Y oxide composition comprises 70 wt % ErO claim 1 , 10 wt % AlO claim 1 , and 20 wt % YO.4. The article of claim 1 , wherein the plasma resistant rare earth oxide film comprises the Er—Y—Zr composition claim 1 , and wherein the Er—Y—Zr oxide composition comprises 70 wt % ErO claim 1 , 20 wt % YO claim 1 , and 10 wt % ZrO.5. The article of claim 1 , the conformal protective layer having been formed by ion beam sputtering with ion assisted deposition.6. The article of claim 1 , wherein the conformal protective layer has a thickness of 0.2-20 μm.7. The article of claim 1 , wherein a porosity of the conformal protective layer is below 0.1%.8. The article of claim 1 , further comprising:a second protective layer on the conformal ...

Plate-like alumina particle and a manufacturing method for the same

[Solving Means] The above problem is solved by providing a plate-like alumina particle including a step of firing an aluminum compound in the presence of a shape-controlling agent and a molybdenum compound serving as a fluxing agent. The above problem is solved also by providing a method for producing a plate-like alumina particle, the method including a step in which the aluminum compound and the molybdenum compound react with each other to form aluminum molybdate and a step in which the aluminum molybdate is decomposed to obtain the plate-like alumina particle.

Dielectric ceramic composition and multilayer ceramic capacitor containing the same

A dielectric ceramic composition and a multilayer ceramic capacitor containing the same are provided. The dielectric ceramic composition contains a base material powder represented by (1−x)BaTiO 3 −xPbTiO 3 containing a first main ingredient represented by BaTiO 3 and a second main ingredient represented by PbTiO 3 , wherein x satisfies 0.0025≦x≦0.4. The multilayer ceramic capacitor includes a ceramic body in which dielectric layers containing the dielectric ceramic composition are alternately stacked with first and second internal electrodes, and first and second external electrodes formed on both end portions of the ceramic body and respectively electrically connected to the first and second internal electrodes.

Method of fabricating a sputtering target, sputtering target fabricated by using the method, and an organic light-emitting display apparatus fabricated using the sputtering target

A method of fabricating a sputtering target, a sputtering target fabricated by the method, and an organic light-emitting display apparatus fabricated by using the sputtering target. The sputtering target may be used for forming a thin film encapsulation layer. The sputtering target includes tin oxide as a main component, and a copper fluoride compound as a dopant.

METHOD FOR MANUFACTURING A PART OF COMPLEX SHAPE BY PRESSURE SINTERING STARTING FROM A PREFORM

This invention relates to a method for manufacturing a part of complex shape () by successive deposition of layers according to a technique of 3D additive printing and pressure sintering, comprising the following steps: an initial step of producing a model () from a material chosen from a porous or pulverulent material based on a metal alloy, a ceramic, a composite material and a lost material by formation of successive layers deposited according to the digitally controlled 3D additive printing technique, followed by a step of introducing a preform () made of porous or pulverulent material to be densified, derived from the model (), into a mold () filled with a sacrificial porous or pulverulent material () in addition to the preform (), the uniaxial densifying pressure sintering () then being applied to the mold () in order to form the part () which is finally extracted from the mold (). 138. A method for manufacturing a part of complex shape (; ) by successive deposition of layers according to a technique of 3D additive printing and pressure sintering , the method comprising the steps of:{'b': 1', '4, 'producing a model (; ) from a material chosen from porous or pulverulent materials based on a metal alloy, a ceramic, a composite material, or a lost material by formation of successive layers deposited according to the digitally controlled 3D additive printing technique;'}{'b': 1', '6', '1', '4', '2', '13', '9', '1', '6', '10', '2', '3', '8', '2, 'introducing a preform (; ) made of porous or pulverulent material, derived from the model (; ), to be densified into a mold () filled with sacrificial porous or pulverulent material (; ) in addition to the preform (; ), the uniaxial densifying pressure sintering () then being applied to the mold () to form the part (; ) which is finally extracted from the mold ().'}2. The method as claimed in claim 1 , wherein the 3D additive printing technique is chosen from stereolithography claim 1 , binder jetting claim 1 , controlled ...

BOP WATER FILTER CARTRIDGE

A water filter may include a diatomite-based ceramic filter having a median pore size greater than about 5 microns, and at least one of a halogen source, a UV source, an active carbon source, or a filtration membrane. A method of filtering water includes passing water from a source chamber through a diatomite-based ceramic filter having a median pore size greater than about 5 microns, and passing the water through at least one of a halogen source, an active carbon source, a UV source, or a filtration membrane to a collection chamber. The diatomite-based ceramic filter may further include bentonite. The water filter may include a biocide. The water filter may have a flow rate greater than about 5 L/hr when normalized to a surface area of 0.015 m. The water filter may reduce bacteria by greater than about 6-log. The halogen source may include a halogen elution system or a surface modification of the diatomite-based ceramic filter. 1. A water filter comprising:a diatomite-based ceramic filter having a median pore size greater than about 5 microns; andat least one of a halogen source, a UV source, an active carbon source, or a filtration membrane.2. (canceled)3. (canceled)4. The water filter of claim 1 , wherein the diatomite-based ceramic filter is disc-shaped.5. The water filter of claim 1 , wherein the diatomite-based ceramic filter is candle-shaped.6. The water filter of claim 1 , wherein the diatimote-based ceramic filter further comprises bentonite claim 1 ,7. The water filter of claim 1 , further comprising a biocide.8. The water filter of claim 7 , wherein the biocide comprises at least one of germicides claim 7 , bactericides claim 7 , fungicides claim 7 , algaeicides claim 7 , and drinking water disinfectants.9. The water filter of claim 7 , wherein the biocide comprises at least one silver acetate claim 7 , silver carbonate claim 7 , silver chloride claim 7 , silver copper zeolite claim 7 , silver fluoride claim 7 , silver iodide claim 7 , silver nitrate ...

CERAMIC CAPACITOR DIELECTRIC MATERIAL

A ceramic capacitor dielectric material includes BaTiO, BaZrO, SrTiO, MgCO, SiO, and at least one compound selected from transition element and rare earth element. The amount of the BaTiOin the ceramic capacitor dielectric material is 40-80 mol %; the amount of the BaZrOis 20-40 mol %; and the amount of the SrTiOis smaller than or equal to 20 mol %. The permittivity of the ceramic capacitor dielectric material is larger than 350, and the dielectric loss is lower than 0.5%. Moreover, the resistivity can reach 10Ω-cm under room temperature, and further reach 10Ω-cm at 125° C. Besides, the performance of the capacitance change rate of the ceramic capacitor dielectric material under DC bias is excellent, thus the ceramic capacitor dielectric material can fulfil the X7T dielectric properties of EIA. 1. A ceramic capacitor dielectric material comprising BaTiO , BaZrO , SrTiO , MgCO , SiO , and at least one compound selected from transition element and rare earth element , wherein an amount of the BaTiOis 40-80 mol %; an amount of the BaZrOis 20-40 mol %; and an amount of the SrTiOis smaller than or equal to 20 mol %.2. The ceramic capacitor dielectric material according to claim 1 , wherein an amount of the MgCOis 2-6 mol %.3. The ceramic capacitor dielectric material according to claim 1 , wherein an amount of the SiOis smaller than or equal to 2 mol %.4. The ceramic capacitor dielectric material according to claim 1 , wherein the rare earth element is selected from a group consisting of LaO claim 1 , CeO claim 1 , PrO claim 1 , NdO claim 1 , PmO claim 1 , SmO claim 1 , EuO claim 1 , GdO claim 1 , DyO claim 1 , HoO claim 1 , ErO claim 1 , TmO claim 1 , and YbO.5. The ceramic capacitor dielectric material according to claim 1 , wherein the transition element is selected from a group consisting of NbO claim 1 , WO claim 1 , TaO claim 1 , CoCO claim 1 , CuO claim 1 , MnCO claim 1 , CrO claim 1 , TiO claim 1 , ZrO claim 1 , SeO claim 1 , NiO claim 1 , and ZnO.6. The ceramic ...

Thermal and environmental barrier coating for ceramic substrates

A thermal and environmental barrier coating composed of ceramic hollow microspheres sintered together. In one embodiment the microspheres are sintered together with a powder of another material that acts as a binder, or with a powder of a material that may be the same as the material of the hollow microspheres, forming a matrix in which the hollow microspheres are embedded. The hollow microspheres may be composed of a material with a high temperature capability, and with a low coefficient of thermal expansion.

ZIRCONIA SINTERED BODY, AND ZIRCONIA COMPOSITION AND CALCINED BODY

A zirconia sintered body, where when cross-sectional area of each zirconia crystal-grain is calculated in image of cross section of zirconia sintered body, converted crystal-grain size of each zirconia crystal-grain is calculated based on cross-sectional area where each zirconia crystal-grain has circular cross-sectional shape, zirconia crystal-grains are classified into class of <0.4 μm, class of ≧0.4 and <0.76 μm, and class of ≧0.76 μm based on converted crystal-grain size, total cross-sectional area of zirconia crystal-grains is calculated in each of classes, and rate of cross-sectional area to total cross-sectional area of all zirconia crystal-grains whose cross-sectional area has been calculated is calculated in each class, rate of cross-sectional area of zirconia crystal-grains in class of <0.4 μm is 4% to 35%, rate of cross-sectional area of zirconia crystal-grains in class of ≧0.4 and <0.76 μm is 24% to 57%, and rate of cross-sectional area of zirconia crystal-grains in class of ≧0.76 μm—is 16% to 62%.

REFRACTORIES AND USE THEREOF

A refractory has the form of a dry, mineral batch of fire-resistant mineral materials combined in such a way that refractories which are long-term resistant to fayalite-containing slags, sulfidic melts (mattes), sulfates and non-ferrous metal melts and are used for refractory linings in industrial non-ferrous metal melting furnaces can be manufactured. The refractory at least contains:—at least one coarse-grained magnesia raw material as the main component;—magnesia (MgO) meal;—at least one fire-resistant reagent which, during the melting process, acts (in situ) in a reducing manner on non-ferrous metal oxide melts and/or non-ferrous metal iron oxide melts and converts same into non-ferrous metal melts. 1. Refractory product in the form of a dry , mineral batch of refractory mineral materials , composed , in terms of materials , in such a manner that refractory products for fire-side lining of industrial non-ferrous metal smelting furnaces that are resistant to fayalite slags , sulfidic melts (mattes) , sulfates , and non-ferrous metal melts , over the long term , can be produced from them , and having:at least one coarse-grained magnesia raw material as the main component,magnesia meal (MgO meal),at least one refractory reagent that acts to reduce non-ferrous metal oxide melts and/or non-ferrous metal iron oxide melts during the smelting process (in situ) and to convert them to non-ferrous metal melts.2. Product according to claim 1 , whereinthe reagent is fine-grained carbon, particularly graphite and/or carbon black and/or anthracite and/or coke, but preferably graphite.3. Product according to claim 1 ,comprising the following dry substance compositions:30 to 74, particularly 40 to 60 wt.-% coarse-grained magnesia, particularly with more than 90, particularly more than 95 wt.-% MgO,25 to 50, particularly 35 to 45 wt.-% magnesia meal, particularly with >90, particularly >95 wt.-% MgO,1 to 20, particularly 5 to 15 wt.-% reagent.4. Product according to claim 1 , ...

Ceramic foam

The invention relates to a method for preparing a ceramic material, in particular porcelain, having a porous, foam-like structure, comprising the steps of providing a clay composition comprising kaolin clay; alkali metal salt and/or alkaline earth metal salt, or a mixture thereof; a plastic mineral clay; and a frit; and water; shaping said composition in a mould; drying said composition in said mould by subjecting it to temperatures below 140° C.; firing said composition in said mould by subjecting it to temperatures within the range of 700-1200° C. The invention also pertains to objects made of this foamed ceramic material.

Preceramic resin formulations, impregnated fibers comprising the preceramic resin formulations, composite materials, and related methods

A preceramic resin formulation comprising a polycarbosilane preceramic polymer, an organically modified silicon dioxide preceramic polymer, and, optionally, at least one filler. The preceramic resin formulation is formulated to exhibit a viscosity of from about 1,000 cP at about 25° C. to about 5,000 cP at a temperature of about 25° C. The at least one filler comprises first particles having an average mean diameter of less than about 1.0 μm and second particles having an average mean diameter of from about 1.5 μm to about 5 μm. Impregnated fibers comprising the preceramic resin formulation are also disclosed, as is a composite material comprising a reaction product of the polycarbosilane preceramic polymer, organically modified silicon dioxide preceramic polymer, and the at least one filler. Methods of forming a ceramic matrix composite are also disclosed.

Cellulose nanocrystal-modified ceramic blank and preparation method thereof

A cellulose nanocrystal-modified ceramic blank and a preparation method thereof are disclosed. Cellulose nanocrystals are added into a ceramic blank in gelcasting. The cellulose nanocrystal-modified ceramic blank comprises, by weight, 0.1 to 10 parts of cellulose nanocrystals, 0.1 to 30 parts of organic gel and 70 to 99 parts of ceramic powder. The cellulose nanocrystal has length of 100 to 300 nm, a diameter of 10 to 20 nm, a slenderness ratio of 10 to 15 , and an elastic modulus of 100 to 150 GPa. The drying strength of the ceramic blank with the cellulose nanocrystals is obviously improved.

CERAMIC HONEYCOMB STRUCTURE AND ITS PRODUCTION METHOD

A ceramic honeycomb structure having pluralities of flow paths partitioned by porous cell walls; (a) the cell walls having porosity of 50-60%; and (b) in a pore diameter distribution in the cell walls measured by mercury porosimetry, (i) pore diameters at cumulative pore volumes corresponding to particular percentages of the total pore volume being within specific ranges and having specific relationships; and (ii) the difference between a logarithm of the pore diameter at a cumulative pore volume corresponding to 20% of the total pore volume and a logarithm of the pore diameter at 80% being 0.39 or less, and its production method. 1. A method for producing a ceramic honeycomb structure comprising the steps of extrusion-molding a moldable material comprising a ceramic material and hollow resin particles as a pore-forming material to a predetermined green body , and drying and sintering said green body;said moldable material comprising 3-9% by mass of said pore-forming material per 100% by mass of said ceramic material;said pore-forming material having a median particle diameter D50 of 20-53 μm, a particle diameter D5 at a cumulative volume corresponding to 5% of the total volume being 12-27 μm, a particle diameter D10 at a cumulative volume corresponding to 10% of the total volume being 15-30 μm, a particle diameter D90 at a cumulative volume corresponding to 90% of the total volume being 50-75 μm, a particle diameter D95 at a cumulative volume corresponding to 95% of the total volume being 60-90 μm, and D50/(D90-D10) being 0.85-1.30, in a curve of a cumulative volume to a particle diameter;said ceramic material comprising 15-25% by mass of silica, 40-43% by mass of talc, and 15-30% by mass of alumina, per 100% by mass of said ceramic material;said silica having a median particle diameter D50 of 15-30 μm, D10 of 10-20 μm, and D90 of 40-60 μm, the percentage of particles having diameters of 5μm or less being 1% or less by mass, the percentage of particles having ...

Preceramic resin formulations, ceramic materials comprising the preceramic resin formulations, and related articles and methods

A preceramic resin formulation comprising a polycarbosilane preceramic polymer and an organically modified silicon dioxide preceramic polymer. A ceramic material comprising a reaction product of the polycarbosilane preceramic polymer and organically modified silicon dioxide preceramic polymer is also described. Articles comprising the ceramic material are also described, as are methods of forming the preceramic resin formulation and the ceramic material.

DIELECTRIC CERAMIC AND MULTILAYER CERAMIC CAPACITOR

A dielectric ceramic that contains Al and Si, as well as a barium titanate-based compound having a perovskite type crystal structure as a primary component. The total molar amount of Al and Si is 2 to 4 parts by mole with respect to 100 parts by mole of Ti, and the content ratio of Al with respect to the total molar amount is 0.2 or less (excluding 0) on the molar ratio basis. The dielectric ceramic may also contain at least one specific rare earth element Re, such as Gd, Tb, or Dy.

Manufacturing method of ceramic powder

A manufacturing method of ceramic powder includes mixing a barium carbonate having a specific surface are of 15 m2/g or more, a titanium dioxide having a specific surface area of 20 m2/g or more, a first compound of a donor element having a larger valence than Ti, and a second compound of an acceptor element having a smaller valence than Ti and having a larger ion radium than Ti and the donor element, and synthesizing barium titanate powder by calcining the barium carbonate, the titanium dioxide, the first compound and the second compound until a specific surface area of the barium titanate powder becomes 4 m2/g or more and 25 m2/g or less.

MAGNETODIELECTRIC Y-PHASE STRONTIUM HEXAGONAL FERRITE MATERIALS FORMED BY SODIUM SUBSTITUTION

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase strontium hexagonal ferrite material. In some embodiments, sodium can be added into the crystal structure of the hexagonal ferrite material in order to achieve high resonance frequencies while maintaining high permeability. 1. (canceled)2. A modified sodium substituted strontium hexagonal ferrite comprising:a Y-phase strontium hexagonal ferrite crystal structure including elements strontium, sodium, cobalt, iron, oxygen and one of a tetravalent ion and a trivalent ion, the at least one of the tetravalent ion and the trivalent ion configured to charge balance for the sodium substituting at least partially for the strontium in the crystal structure; anda permeability of between 5 and 6.3. The modified sodium substituted strontium hexagonal ferrite of wherein the crystal structure contains the trivalent ion.4. The modified sodium substituted strontium hexagonal ferrite of wherein greater than zero and less than or equal to 1.5 of the trivalent ion is included in the crystal structure.5. The modified sodium substituted strontium hexagonal ferrite of wherein the trivalent ion is selected from the group consisting of Al claim 3 , Ga claim 3 , Sc claim 3 , Cr claim 3 , Mn claim 3 , In claim 3 , Yb claim 3 , Er claim 3 , Y and lanthanide elements.6. The modified sodium substituted strontium hexagonal ferrite of wherein the trivalent ion is scandium.7. The modified sodium substituted strontium hexagonal ferrite of wherein the crystal structure contains the tetravalent ion.8. The modified sodium substituted strontium hexagonal ferrite of wherein greater than zero and less than or equal to 0.75 of the tetravalent ion is included in the crystal structure.9. The modified sodium substituted strontium hexagonal ferrite of wherein the tetravalent ion is selected from the group consisting of Si claim 7 , Ge claim 7 ...

MULTILAYER CERAMIC CAPACITOR AND MANUFACTURING METHOD FOR SAME

A multilayer ceramic capacitor () has a laminate body () constituted by dielectric layers () and internal electrode layers () stacked alternately. The dielectric layers () contain (BaCaSr)(TiZr)O, where 0.03≤x≤0.16, 0≤y≤0.02, 0 Подробнее

EXOTHERMIC POWDERS FOR ADDITIVE MANUFACTURING

A method of additive manufacturing to form a component comprises successively depositing a plurality of layers to form the component. Depositing at least one of the plurality of layers includes depositing a layer of a first particulate precursor over a platen, depositing a second particulate precursor on portions of the platen over the layer of the first particulate precursor specified by a controller, and directing energy to the second particulate precursor deposited on the portion of the platen to cause an exothermic chemical reaction between the first particulate precursor and the second particulate precursor. The exothermic chemical reaction produces heat that sinters products of the chemical reaction to fabricate the layer of the component. 1. A method of additive manufacturing to form a component , the method comprising: depositing a layer of a first particulate precursor on a platen;', 'depositing a second particulate precursor on portions of the platen over the layer of the first particulate precursor specified by a controller; and', 'directing energy to the second particulate precursor deposited on the portion of the platen to cause an exothermic chemical reaction between the first particulate precursor and the second particulate precursor, wherein the exothermic chemical reaction produces heat that sinters products of the chemical reaction to fabricate the layer of the component., 'successively depositing a plurality of layers to form the component, wherein depositing at least one of the plurality of layers includes'}2. The method of claim 1 , wherein the first particulate precursor is a metal oxide claim 1 , the metal oxide being MoO claim 1 , FeO claim 1 , NiO claim 1 , or CuO claim 1 , or a combination thereof.3. The method of claim 1 , wherein the second particulate precursor is aluminum claim 1 , silicon or carbon claim 1 , or a combination thereof.4. A method of additive manufacturing to form a component claim 1 , the method comprising: depositing a ...

Plasma processing device member, plasma processing device comprising said plasma processing device member, and method for manufacturing plasma processing device member

A plasma processing device member according to the disclosure includes a base material and a film formed of an oxide, or fluoride, or oxyfluoride, or nitride of a rare-earth element, the film being disposed on at least part of the base material, the film including a surface to be exposed to plasma, the surface having an area occupancy of open pores of 8% by area or more, and an average diameter of open pores of 8 μm or less.

High zirconia fused cast refractory

[Problems] To provide a high zirconia fused cast refractory that suffers less cracks in production and on heating, has excellent productivity, is hard to form zircon crystals with the refractory solely and under conditions where the refractory is in contact with molten glass, is hard to suffer cracks on receiving heat cycles in operation of a glass melting furnace, and has durability for a prolonged period of time. [Solution to Problems] A high zirconia fused cast refractory containing, as chemical components, from 85 to 95% by weight of ZrO 2 , from 0.4 to 2.5% by weight of Al 2 O 3 , from 3.5 to 10% by weight of SiO 2 , from 0.05 to 1% by weight in total of Na 2 O and K 2 O, more than 0.04% by weight and 1% by weight or less of B 2 O 3 , 0.02% by weight or less of P 2 O 5 , 0.05% by weight or less of MgO, from 0.01 to 0.2% by weight of CaO, in the case where any one of SrO and BaO is contained, from 0.3 to 3% by weight of SrO or more than 0.5% by weight and 3% by weight or less of BaO, and in the case where both of them are contained, 0.3% by weight or more of SrO and from 0.3 to 3% by weight in total of SrO and BaO, from 0.01 to 0.7% by weight of SnO 2 , and 0.3% by weight or less in total of Fe 2 O 3 and TiO 2 .

METHOD FOR PRODUCING SURFACE-MODIFIED BASE MATERIAL, METHOD FOR PRODUCING JOINED BODY, NEW HYDROSILANE COMPOUND, SURFACE TREATMENT AGENT, SURFACE TREATMENT AGENT KIT, AND SURFACE-MODIFIED BASE MATERIAL

The method for producing a surface-modified base material according to the present invention includes a step of bringing a base material having a polar group present on a surface thereof into contact with a hydrosilane compound having a molecular structure A and having a Si—H group composed of a silicon atom of the molecular structure A and a hydrogen atom bonded to the silicon atom in the presence of a borane catalyst so as to allow a dehydrocondensation reaction to take place between the base material and the compound, thereby forming the base material surface-modified with the molecular structure A. This production method is capable of surface-modifying a base material at a lower temperature in a shorter time than conventional methods and allows a wide variety of options for the form, type, and application of the base material, the mode of the modification reaction, and the type of the molecular structure with which the base material is surface-modified. 1. A method for producing a surface-modified base material , comprising a step of bringing a base material having a polar group present on a surface thereof into contact with a hydrosilane compound having a molecular structure A and having a Si—H group composed of a silicon atom of the molecular structure A and a hydrogen atom bonded to the silicon atom in the presence of a borane catalyst so as to allow a dehydrocondensation reaction to take place between the base material and the compound , thereby forming the base material surface-modified with the molecular structure A.2. The method for producing a surface-modified base material according to claim 1 , wherein the polar group is a hydroxy group and/or a carbonyl group.3. The method for producing a surface-modified base material according to claim 1 , wherein the polar group is a hydroxy group.4. The method for producing a surface-modified base material according to claim 1 , wherein the catalyst is tris(pentafluorophenyl)borane.5. The method for producing a ...

Low-K And Mid-K LTCC Dielectric Compositions And Devices

LTCC devices are produced from dielectric compositions comprising a mixture of precursor materials that, upon firing, forms a dielectric material comprising a barium-tungsten-silicon host. 1. A composition comprising a mixture of precursor materials that , upon firing , forms a lead-free and cadmium-free dielectric material comprising a barium-tungsten-silicon oxide host material.2. The composition according to claim 1 , wherein the dielectric material exhibits a dielectric constant of 1 to 50.3. A host material comprising:(i) 30-50 wt % BaO,{'sub': '3', '(ii) 45-65 wt % WO,'}{'sub': '2', '(iii) 1-10 wt % SiO,'}(iv) no lead, and(v) no cadmium.7. A lead-free and cadmium-free composition comprising a mixture of precursors that claim 1 , upon firing claim 1 , forms a lead-free and cadmium-free dielectric material comprising:(a) 10-55 wt % BaO,{'sub': '3', '(b) 15-60 wt % WO,'}{'sub': '2', '(c) 0.5-15 wt % SiO,'}(d) 0-27 wt % CaO,{'sub': '2', '(e) 0-35 wt % TiO,'}(f) 0-15 wt % SrO,{'sub': 2', '3, '(g) 0.05-5 wt % BO,'}(h) 0.05-5 wt % Li2O,(i) 0-5 wt % LiF,(j) 0-5 wt % CuO, and(k) 0-10 wt % ZnO.810-. (canceled)11. An electric or electronic component comprising claim 4 , prior to firing claim 4 , the lead-free and cadmium-free dielectric material of claim 4 , together with a conductive paste comprising:a. 60-90 wt % Ag+Pd+Pt+Au,b. 1-10 wt % of an additive selected from the group consisting of silicides, carbides, nitrides, and borides of transition metals,c. 0.5-10 wt % of at least one glass frit, andd. 10-40 wt % of an organic portion.12. The electric or electronic component of claim 11 , wherein the electric or electronic component is selected from the group consisting of high Q resonators claim 11 , electro-magnetic interference filter claim 11 , band pass filters claim 11 , wireless packaging systems claim 11 , and combinations thereof.13. A method of forming an electronic component comprising:{'claim-ref': {'@idref': 'CLM-00004', 'claim 4'}, '(a1) applying dielectric ...

CERAMIC MATERIAL WITH HIGH THERMAL SHOCK RESISTANCE AND HIGH EROSION RESISTANCE

Certain embodiments of the present disclosure relate to ceramic materials with high thermal shock resistance and high erosion resistance. In one embodiment, a ceramic material is formed from a composition comprising AlO, MgO, SiO. 1. A component adapted for use in a semiconductor processing chamber , the component comprising a ceramic material formed from a composition comprising:{'sub': 2', '3, 'about 40 wt % to 80 wt % of AlO;'}about 10 wt % to 50 wt % of MgO; and{'sub': 2', '2', '3', '2, 'about 2 wt % to 30 wt % of SiO, provided that the amounts of each of the AlO, the MgO, and the SiOsum to 100 wt % or less.'}2. The component of claim 1 , wherein the ceramic material comprises at least one phase comprising one or more of a sapphirine phase claim 1 , a cordierite phase claim 1 , a spinel phase claim 1 , or an enstatite phase.3. The component of claim 1 , wherein the ceramic material comprises a sapphirine phase.4. The component of claim 1 , wherein the ceramic material is substantially non-porous.5. The component of claim 1 , wherein the composition comprises:{'sub': 2', '3, 'about 55 wt % to 70 wt % of AlO;'}about 25 wt % to 35 wt % MgO; and{'sub': '2', 'about 5 wt % to 20 wt % SiO.'}6. The component of claim 1 , wherein the ceramic material is thermal shock resistant up to about 300° C.7. The component of claim 6 , wherein an erosion rate of the ceramic material when exposed to plasma is within about 50% of an erosion rate for ceramic material consisting essentially of YO.8. The component of claim 1 , wherein the ceramic material is formed by sintering the composition at a temperature of about 1000° C. to about 1600° C. for a duration of about 2 minutes to about 10 hours.9. The component of claim 1 , wherein the ceramic material is formed by plasma-spraying the composition.10. The component of claim 1 , wherein the component is selected from a group consisting of: a heater claim 1 , an electrostatic chuck claim 1 , a nozzle claim 1 , a gas distribution plate ...

Apparatus And Method For Forming Melt-Formed Inorganic Fibres

Apparatus for forming melt-formed fibres comprises: • a source of molten material; • a spinning head comprising one or more rotors; • a plurality of nozzles or slots disposed around at least part of the one or more rotors, configured to supply a stream of gas; • a conveyor; and • a barrier () between the spinning head and the conveyor (), an upper edge of the barrier lying below a horizontal line () lying in a first vertical plane () including axis of rotation () of at least one rotor of the one or more rotors and intersecting the intersection of the axis of rotation with a second vertical plane () orthogonal to the first vertical plane and including a vertical line () through said region, the included angle between the horizontal line () and a line () in the first vertical plane joining the upper edge of the barrier and the intersection of the horizontal line and axis of rotation being in the range of 40°-85°. Method of making melt-formed fibres using the apparatus. Melt formed biosoluble fibres being alkaline earth silicate fibers having a low shot content. 1. Apparatus for forming melt-formed inorganic fibres comprising:a source of molten material; i. a spinning head comprising one or more rotors each having an axis of rotation, at least one rotor being configured to receive molten material from the source of molten material at a region of the rotor to which melt is delivered;', {'sup': '−1', 'ii. a plurality of nozzles or slots disposed around at least part of the one or more rotors, configured to supply a stream of gas at a velocity in excess of 40 m.s;'}], 'a fibre forming region housingthe fibre forming region being delimited at an end remote from the at least one rotor by a barrier;a wool bin beyond the barrier to receive fibres from the fibre forming regiona conveyor disposed to receive fibres produced from the molten material and settling from the wool bin:the barrier being between the spinning head and the conveyor,an upper edge of the barrier lying below ...

Composite particles and method for producing composite particles

Provided are: composite particles having excellent oxidation resistance; and a method for producing composite particles. The composite particles are obtained by forming a composite of TiC and at least one of Zr and Si. In the method for producing composite particles, a titanium oxide powder and at least one of a zirconium oxide powder and a silicon oxide powder are used as raw material powders, and composite particles are produced using a gas phase method.

FILAMENTOUS ORGANISM-DERIVED CARBON-BASED MATERIALS, AND METHODS OF MAKING AND USING SAME

The invention provides filamentous organism-derived carbonaceous materials doped with organic and/or inorganic compounds, and methods of making the same. In certain embodiments, these carbonaceous materials are used as electrodes in solid state batteries and/or lithium-ion batteries. In another aspect, these carbonaceous materials are used as a catalyst, catalyst support, adsorbent, filter and/or other carbon-based material or adsorbent. In yet another aspect, the invention provides battery devices incorporating the carbonaceous electrode materials. 138-. (canceled)39. A method of producing a carbonaceous material , the method comprising:carbonizing a dried organic material comprising a filamentous organism to provide a carbonaceous material that is a graphitic, partially graphitic, or an amorphous carbon matrix.40. The method of claim 39 , wherein the dried organic material is shaped or pressed claim 39 , wherein optionally the shaped or pressed dried organic material is contacted with a conductive wire before carbonization.41. The method of claim 39 , wherein the dried organic material comprises a binding material or is in powder form.42. The method of claim 39 , further comprising low-heat drying claim 39 , flash freezing claim 39 , lyophilizing claim 39 , or flash freezing and lyophilizing claim 39 , the filamentous organism to form the dried organic material.43. The method of claim 42 , wherein the filamentous organism is grown in a medium under light and optionally in the presence of at least one organic or inorganic compound.44. The method of claim 39 , wherein the filamentous organism is at least one selected from the group consisting of a filamentous algae claim 39 , filamentous fungus claim 39 , and filamentous bacterium.45Neurospora crassa.. The method of claim 39 , wherein the filamentous organism is a wild type or genetically modified46. The method of claim 43 , wherein at least one applies:(a) the filamentous organism is grown for a period of time of ...

Process for making tiles

The present disclosure relates to a process for making ceramic tiles characterized by the addition to the ceramic raw materials of an aqueous slurry comprising a swellable clay of the smectite family, a binder and a water-soluble salt of a monovalent cation.

CASTABLE REFRACTORY MATERIAL

A castable refractory material for use in the manufacture of refractory products including fused silica, ceramic fibre, microsilica and a bonding material comprising colloidal silica. 1. A castable refractory material for use in the manufacture of refractory products , wherein the castable refractory material includes fused silica , ceramic fiber , microsilica and a bonding material comprising colloidal silica.2. The castable refractory material according to claim 1 , comprising fused silica in a range of 30-90% by weight.3. The castable refractory material according to claim 1 , comprising ceramic fiber in a range of 5-45% by weight.4. The castable refractory material according to claim 1 , comprising microsilica in a range of 2-15%.5. The castable refractory material according to claim 1 , comprising colloidal silica in a range of 3-25%.6. The castable refractory material according to claim 1 , wherein the fused silica includes particle sizes in a range of 150 μm to 3.5 μm.7. The castable refractory material according to claim 6 , wherein the fused silica includes particles of mesh size 200 and particles of mesh size 325.8. The castable refractory material according claim 1 , wherein the ceramic fiber is a synthetic ceramic fibre.9. The castable refractory material according to claim 1 , wherein the ceramic fiber is an alkaline earth silicate fibre.10. The castable refractory material according to claim 1 , wherein the ceramic fiber is soluble in physiological fluids.11. The castable refractory material according to claim 1 , wherein the ceramic fiber is a chopped fibre having a fibre length in a range of 9-15 μm.12. The castable refractory material according to claim 1 , further comprising a dispersing agent.13. The castable refractory material according to claim 1 , further comprising a non-wetting agent in a range a 0%-12% by weight.14. A refractory product for use in aluminium processing claim 1 , comprising a cast refractory material according to .15. The ...

Dielectric ceramic composition and multilayer ceramic capacitor comprising the same

A dielectric ceramic composition includes a barium titanate (BaTiO3)-based base material main ingredient and an accessory ingredient, the accessory ingredient including dysprosium (Dy) and praseodymium (Pr) as first accessory ingredients. A content of the Pr satisfies 0.233 mol≤Pr≤0.699 mol, based on 100 mol of the barium titanate base material main ingredient.

Combined Warmer and Seat Fumigator Using Bioceramics

The present invention relates to a combined warmer and seat fumigator using bioceramics and, more specifically, to a combined warmer and seat fumigator using bioceramics, the combined warmer and seat fumigator being capable of carrying out both thermotherapy and fumigation therapy, having excellent heat insulation, ultralight weight, nonflammability, low gas toxicity, thermal conductivity and deodorizability, and having immune function improvement and inflammation alleviation efficacy through far infrared ray emissivity, radiant energy, anion generation and antibacterial ability. 1. A combined warmer and seat fumigator using bioceramic comprising:a main body including a first partitioned body of an arc shape of which a central angle is 90 degrees, and a second partitioned body of an arc shape of which one end is coupled to the first partitioned body by a hinge and of which a central angle is 90 degrees, and a structure capable of being folded or unfolded;thermal modules respectively mounted on the inner circumferential surfaces of the first partitioned body and the second partitioned body to emit heat; andwherein bioceramic is mounted on the thermal modules or on the inner circumferential surface of the main body,wherein when the main body is unfolded to become a semicircle, a user can lay in the main body to get thermotherapy, andwherein when the main body is folded and a sitting mat is mounted on the upper surface of the main body, the user can sit on the sitting mat to get thermotherapy.2. The combined warmer and seat fumigator according to claim 1 , further comprising:fumigation modules respectively mounted on the inner circumferential surfaces of the first partitioned body and the second partitioned body.3. The combined warmer and seat fumigator according to claim 2 , wherein each of the fumigation modules comprises: a heating plate mounted in the first partitioned body and the second partitioned body claim 2 , a container getting in contact with the heating ...

Thermal Insulation

The present invention relates to inorganic fibres having a composition comprising: 65.7 to 70.8 wt % SiO 2 ; 27.0 to 34.2 wt % CaO; 0.10 to 2.0 wt % MgO; and optional other components providing the balance up to 100 wt %, wherein the sum of SiO 2 and CaO is greater than or equal to 97.8 wt %; and the other components, when present, comprise no more than 0.80 wt % Al 2 O 3 ; and wherein the amount of MgO and other components are configured to inhibit the formation of surface crystallite grains upon heat treatment at 1100° C. for 24 hours, wherein said surface crystallite grains comprise an average crystallite size in a range of from 0.0 to 0.90 μm.

MOLTEN ALUMINA-ZIRCONIA GRAINS

A fused grain having the following chemical composition in percent by weight in relation to the oxides: ZrO: 16% to 30%, provided that HfO<2%, AlO: percentage needed to bring the total to 100%, CrO: ≥0.2%, TiO: ≥0.5%, CrO+TiO: <7%, other elements: <3%, provided that SiO+CaO+MgO<1.5%. 1. A fused grain exhibiting the following chemical analysis , as percentages by weight based on the oxides:{'sub': 2', '2, 'ZrO: 16% to 30%, provided that HfO<2%,'}{'sub': 2', '3, 'AlO: remainder to 100%,'}{'sub': 2', '3, 'CrO: ≥0.2%,'}{'sub': '2', 'TiO: ≥0.5%,'}{'sub': 2', '3', '2, 'CrO+TiO: <7%,'}{'sub': '2', 'Other elements: <3%, provided that SiO+CaO+MgO<1.5%.'}2. The grain as claimed in claim 1 , in which CrO>0.4%.3. The grain as claimed in claim 1 , in which{'sub': 2', '3, 'the CrOcontent is less than or equal to 4% and'}{'sub': '2', 'the TiOcontent is less than or equal to 6%,'}as percentages by weight based on the oxides.4. The grain as claimed in claim 1 ,{'sub': '2', 'in which the ZrOcontent is greater than 18%, and/or'}{'sub': 2', '3, 'in which the CrOcontent is greater than 0.5%, and/or'}{'sub': '2', 'in which the TiOcontent is greater than 0.8%,'}as percentages by weight based on the oxides.5. The grain as claimed in claim 4 ,{'sub': '2', 'in which the ZrOcontent is greater than 20%, and/or'}{'sub': '2', 'in which the TiOcontent is greater than 1%,'}as percentages by weight based on the oxides.6. The grain as claimed in claim 1 ,{'sub': '2', 'in which the ZrOcontent is less than 29%, and/or'}{'sub': 2', '3, 'in which the CrOcontent is less than 3.2%, and/or'}{'sub': '2', 'in which the TiOcontent is less than 4.4%,'}as percentages by weight based on the oxides.7. The grain as claimed claim 6 ,{'sub': '2', 'in which the ZrOcontent is less than 27%, and/or'}{'sub': 2', '3, 'in which the CrOcontent is less than 2.2%, and/or'}{'sub': '2', 'in which the TiOcontent is less than 2.8%,'}as percentages by weight based on the oxides.8. The grain as claimed in claim 1 , in which the ...

Ceramic proppant and method for producing same

The invention relates to a method for producing a ceramic proppant, including a step for preparing an original charge material, involving the grinding of source materials, particularly magnesium-containing materials, and auxiliary materials, thus producing a charge material, granulating the charge material so as to produce granules of a proppant precursor, and firing the granules of proppant precursor, thus producing proppant granules, wherein the method includes a step for pre-firing the magnesium-containing material in a reducing atmosphere. The invention also relates to a ceramic proppant produced via the indicated method.