ФИЛЬТР, СОДЕРЖАЩИЙ ОБЪЕДИНЕННЫЙ КАТАЛИЗАТОР ДЛЯ ОКИСЛЕНИЯ САЖИ И NH-SCR КАТАЛИЗАТОР

Изобретение относится к фильтру с протеканием через стенки для фильтрования материала в виде частиц от протекающих отработанных газов и к способу его получения. Фильтр содержит катализатор для преобразования твердого углерода в материал в виде частиц с помощью кислорода и для селективного восстановления оксидов азота в отработанных газах с помощью азотистого восстановителя, причем катализатор содержит оксид церия и вольфрам. Изобретение также относится к выхлопной системе для транспортного средства, причем система содержит источник азотистого восстановителя, инжекционные средства для инжекции азотистого восстановителя в протекающих отработанных газах и фильтр с протеканием через стенки, расположенный после инжекционных средств. Технический результат заключается в уменьшении обратного давления в выхлопной системе, повышая эффективность двигателя. 3 н. и 10 з.п. ф-лы, 5 ил., 2 табл., 3 пр.

ХИМИЧЕСКИ СВЯЗАННЫЙ КЕРАМИЧЕСКИЙ РАДИАЦИОННО-ЗАЩИТНЫЙ МАТЕРИАЛ И СПОСОБ ЕГО ПОДГОТОВКИ

Группа изобретений относится к области химически связанных керамик на основе оксида-фосфата, в частности к химически связанным керамикам на основе оксида-фосфата, имеющим уникальные характеристики радиационной защиты. Состав вещества для удержания радиации и защиты от нее, содержащий химически связанную керамическую матрицу на основе оксида-фосфата и радиационно-защитный материал, в котором радиационно-защитный материал диспергирован в матрице химически связанного керамического цемента на основе оксида-фосфата, и радиационно-защитный материал выбран из группы, состоящей из барита, оксида бария, сульфата бария, оксида церия, оксида вольфрама, оксида гадолиния, оксида обедненного урана, отожженного свинцового стекла в виде порошка и волокон с содержанием свинца от 40% до 75%, цеолитов, клиноптилолитов и целестинов. Радиационно-защитный состав вещества, содержащий химически связанную керамическую матрицу на основе оксида-фосфата, имеющую катионную составляющую, демонстрирующую способность ...

ТЕПЛОИЗОЛЯЦИОННОЕ ИЗДЕЛИЕ

Теплоизоляционное изделие представляет собой стойкий к высоким температурам мат или плиту из неорганического волокна, пропитанный коллоидным неорганическим оксидом, прессованный и высушенный. Коллоидный неорганический оксид представляет собой композицию коллоидного неорганического оксида в комбинации с гелирующим агентом, при этом композиция коллоидного неорганического оксида включает коллоидный кремнезем, гелирующий агент в количестве примерно от 0,01 до 10 мас.% неорганических соли или оксида и примерно от 0,01 до 10 мас.% кислоты, а также воду в количестве, достаточном для растворения гелирующего агента, при необходимости в количестве, составляющем вплоть до примерно 70 мас.% от композиции. Изделие имеет рабочую температуру по меньшей мере до примерно 1000°С и сохраняет механическую целостность после воздействия рабочей температуры, имеет плотность больше 700 кг/сми прочность на сжатие по меньшей мере примерно 6800 кПа (70 кгс/см). Технический результат: снижение теплопроводности при ...

СПОСОБ ПОЛУЧЕНИЯ ПОДЛОЖКИ ИЗ НИТРИДА АЛЮМИНИЯ (AIN)

Изобретение относится к области металлургии, в частности, к способу получения подложки из нитрида алюминия (AlN) и может найти применение для изготовления изделий с покрытиями. Подложку получают напылением порошка на основание при высокой температуре и с высокой скоростью. Порошок содержит зерна AlN, покрытые слоем предшественника оксида, выбранного из предшественников оксидов, дающих оксид, образующий жидкую фазу вокруг зерен AlN в процессе напыления. В результате получают подложки толщиной, выдерживающей заданное напряжение частности, от 0,1 мм до 0,5 мм. 9 з.п. ф-лы.

СПОСОБ ПРОИЗВОДСТВА ГРАНУЛ ПО МЕНЬШЕЙ МЕРЕ ОДНОГО ОКСИДА МЕТАЛЛА

Настоящее изобретение относится к способу спекания прессованного порошка по меньшей мере одного оксида металла, выбранного из актинидов и лантанидов, для производства гранул ядерного топлива. Указанный способ включает следующие последовательные стадии, проведенные в печи в атмосфере, содержащей инертный газ, водород и воду: (a) повышение температуры от начальной температуры Tдо температуры Tвыдержки, которая находится на уровне 1400-1800°С, (b) выдерживание температуры при температуре Tвыдержки и (c) снижение температуры от температуры Tвыдержки до конечной температуры T. В ходе стадии (a) от температуры T, пока не будет достигнута промежуточная температура Tмежду 1000°C и T, отношение парциальных давлений P(H)/P(HO) является таким, что 500 < P(H)/P(HO) ≤ 50000. В ходе стадии (c) от второй промежуточной температуры Tмежду Tи 1000°C, пока не будет достигнута температура T, P(H)/P(HO) ≤ 500. Режим обжига может включать понижение температуры после выдержки при Tдо уровня 20-500°С с последующим ...

ЭКСТРУДИРОВАННЫЙ SCR-ФИЛЬТР

Изобретение относится к области очистки газов. Предложен фильтр с протеканием через стенки, содержащий катализатор для преобразования оксидов азота в присутствии восстанавливающего агента. Фильтр содержит экструдированную твердую массу, содержащую: 10-95% масс., по меньшей мере, одного компонента связующего вещества/матрицы; 5-90% масс. цеолитного молекулярного сита, нецеолитного молекулярного сита или смеси любых двух или более из них и 0-80% масс. необязательно стабилизированного оксида церия. Катализатор содержит, по меньшей мере, один металл, где: (i) по меньшей мере, один металл присутствует в экструдированной твердой массе, а также присутствует при более высокой концентрации на поверхности экструдированной твердой массы; (ii) по меньшей мере, один металл присутствует в экструдированной твердой массе, а также, его наносят в виде одного или нескольких слоев покрытия на поверхность экструдированной твердой массы, или (iii) по меньшей мере, один металл присутствует в экструдированной ...

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 ...

ЭЛЕМЕНТ ТУРБИНЫ С ТЕПЛОЗАЩИТНЫМ ПОКРЫТИЕМ

... 1. Элемент турбины, отличающийся тем, что он содержит подложку, образованную из керамического материала, выбранного из группы, состоящей из монолитного керамического материала и композиционного керамического материала, и теплозащитное покрытие, связанное с указанной подложкой. 2. Элемент турбины по п.1, отличающийся тем, что указанный керамический материал выбран из группы, состоящей из нитрида кремния и самоупрочненного нитрида кремния. 3. Элемент турбины по п.1, отличающийся тем, что указанный керамический материал выбран из группы, состоящей из композиционного материала на основе карбидокремниевого волокна и карбидокремниевой матрицы и композиционного материала на основе углеродного волокна и карбонизированной матрицы. 4. Элемент турбины по п.1, отличающийся тем, что указанное теплозащитное покрытие содержит по меньшей мере 15 мол.% по меньшей мере одного полуторного оксида лантанида, а остальное составляет первый оксид, выбранный из группы, состоящей из диоксида циркония, оксида церия ...

КЕРАМИЧЕСКАЯ АНОДНАЯ СТРУКТУРА (ВАРИАНТЫ) И ЕЕ ПРИМЕНЕНИЕ

... 1. Керамическая анодная структура, получаемая способом, включающим стадии: ! (a) получение суспензии диспергированием порошка электропроводной фазы и добавлением связующего вещества в дисперсию, в которой указанный порошок выбирают из группы, включающей легированный ниобием титанат стронция, легированный ванадием титанат стронция, легированный танталом титанат стронция и их смеси, ! (b) спекание суспензии со стадии (а), ! (c) получение раствора предшественника двуокиси церия, где указанный раствор содержит растворитель и поверхностно-активное вещество, ! (d) пропитка полученной спеченной структуры со стадии (b) раствором предшественника со стадии (с), ! (e) обжиг полученной структуры со стадии (d), и ! (f) проведение стадий (d)-(е), по крайней мере, один раз. ! 2. Керамическая анодная структура по п.1, где электропроводная фаза на стадии (а) также изначально содержит дополнительную проводящую ионы кислорода фазу или смешанную проводящую ионы кислорода и электропроводную фазу. ! 3. Керамическая ...

ПОЛИМЕРИЗУЕМЫЙ НЕОРГАНИЧЕСКИЙ-ОРГАНИЧЕСКИЙ РАСТВОР ПРЕДШЕСТВЕННИКА ДЛЯ НАНОРАЗМЕРНЫХ ОКСИДОВ МЕТАЛЛОВ, ЕГО ПРИМЕНЕНИЕ ДЛЯ ПОЛУЧЕНИЯ СПЕЧЕННОЙ МЕМБРАНЫ И ЕЕ ПРИМЕНЕНИЕ

... 1. Полимеризуемый неорганический-органический раствор предшественника для наноразмерных оксидов металлов, получаемый способом, включающим стадии: ! (a) получение раствора, по крайней мере, одного катиона металла и органического соединения, и ! (b) нагревание раствора до температуры от 20 до 300°С с получением полимеризуемого раствора предшественника для наноразмерных оксидов, и ! (c) завершение нагревания, когда вязкость при комнатной температуре составит от 10 до 500 мПа·сек. ! 2. Полимеризуемый неорганический-органический раствор предшественника по п.1, где, по крайней мере, один катион металла выбирают из группы, включающей Се, Gd, Co, Al, Sm, Fe, Mg, Ni, Y, Zr, La, Sr, Mn, Sc, Ti и их смеси. ! 3. Полимеризуемый неорганический-органический раствор предшественника по п.1, где, по крайней мере, одно органическое соединение имеет карбонильную группу или является мономерным соединением. ! 4. Полимеризуемый неорганический-органический раствор предшественника по п.3, где, по крайней мере, ...

ТЕПЛОИЗОЛЯЦИОННОЕ ИЗДЕЛИЕ

... 1. Теплоизоляционное изделие, представляющее собой стойкий к высоким температурам мат или плиту из неорганического волокна, пропитанный коллоидным неорганическим оксидом, прессованный и высушенный, отличающийся тем, что коллоидный неорганический оксид представляет собой композицию коллоидного неорганического оксида в комбинации с гелирующим агентом, при этом изделие имеет рабочую температуру, по меньшей мере, до примерно 1000°С и сохраняет механическую целостность после воздействия рабочей температуры, имеет плотность больше или равную примерно 500 кг/см3, и прочность на сжатие по меньшей мере примерно 4,900 кПа (50 кгс/см2). ! 2. Теплоизоляционное изделие по п.1, отличающееся тем, что коллоидный неорганический оксид представляет собой композицию коллоидного кремнезема в комбинации с гелирующим агентом, при этом изделие имеет плотность больше или равную 700 кг/см3, и прочность на сжатие, по меньшей мере, примерно 7,800 кПа (80 кгс/см3). ! 3. Теплоизоляционное изделие по п.2, отличающееся ...

БИОКЕРАМИЧЕСКАЯ ДЕТАЛЬ

УСТОЙЧИВЫЕ К СМАЧИВАНИЮ МАТЕРИАЛЫ И ИЗДЕЛИЯ ИЗ НИХ

... 1. Изделие (200), включающее !покрытие (202), обладающее связанной пористостью поверхности до примерно 5 об.%, где покрытие (202) включает материал, содержащий первичный оксид и вторичный оксид, где ! (i) первичный оксид содержит катион, выбранный из группы, состоящей из церия, празеодима, тербия и гафния, ! (ii) вторичный оксид содержит катион, выбранный из группы, состоящей из редкоземельных элементов, иттрия и скандия. ! 2. Изделие (200) по п.1, в котором покрытие (202) дополнительно имеет текстуру поверхности (206). ! 3. Изделие (200) по п.1, в котором первичный оксид содержит катион, выбранный из группы, состоящей из церия и гафния. ! 4. Изделие (200) по п.1, в котором вторичный оксид содержит катион, выбранный из группы, состоящей из лантана, празеодима и неодима. ! 5. Изделие (200) по п.1, в котором первичный оксид содержит оксид церия. ! 6. Изделие (200) по п.5, в котором вторичный оксид содержит оксид лантана. ! 7. Изделие (200) по п.6, в котором количество катиона церия составляет ...

ДЕТАЛЬ, СОДЕРЖАЩАЯ ПОДЛОЖКУ СО СЛОЕМ КЕРАМИЧЕСКОГО ПОКРЫТИЯ

... 1. Деталь, содержащая подложку, выполненную из электропроводящего материала, и имеющая покрытие на по меньшей мере части поверхности подложки, причем покрытие содержит керамический слой, причем деталь отличается тем, что указанный слой покрытия имеет в основе оксиды церия, и тем, что указанный слой покрытия имеет концентрацию кислородных вакансий, больше или равную 1×10см, содержит множество трещин, выходящих на его поверхность, и имеет толщину по меньшей мере 5 мкм и не более 100 мкм.2. Деталь по п.1, отличающаяся тем, что расстояние между двумя соседними трещинами составляет от 5 до 50 мкм.3. Деталь по п.1, отличающаяся тем, что указанный слой покрытия содержит:- от 0,5 до 35 ат.% оксидов церия,- от 0,5 до 75 ат.% кислорода, и- от 0,5 до 30 ат.% азота.4. Деталь по п.1, отличающаяся тем, что указанный слой покрытия содержит также по меньшей мере один оксигидроксид металла формулы MO.OH, где M означает металл, относящийся к группе, образованной лантанидами, иттрием, цирконием и/или гафнием ...

СЦИНТИЛЛЯЦИОННЫЙ МАТЕРИАЛ

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 ...

ТРОЙНОЙ КАТАЛИЗАТОР, СОДЕРЖАЩИЙ ЭКСТРУДИРОВАННУЮ ТВЕРДУЮ МАССУ

... 1. Тройной катализатор, содержащий экструдированную твердую массу, содержащую:10-95 мас.%, по меньшей мере, одного компонента связующего вещества/матрицы;5-90 мас.% цеолитного молекулярного сита, нецеолитного молекулярного сита или смеси любых двух или более из них и0-80 мас.% необязательно стабилизированного оксида церия,этот катализатор содержит, по меньшей мере, один благородный металл и, необязательно, по меньшей мере, один неблагородный металл, где:(i) по меньшей мере, один благородный металл находится в одном или нескольких слоях покрытия на поверхности экструдированной твердой массы;(ii) по меньшей мере, один металл присутствует в экструдированной твердой массе и, по меньшей мере, один благородный металл также находится в одном или нескольких слоях покрытия на поверхности экструдированной твердой массы или(iii) по меньшей мере, один металл присутствует в экструдированной твердой массе, присутствует при более высокой концентрации на поверхности экструдированной твердой массы и, по ...

ФЛУОРЕСЦЕНТНАЯ КЕРАМИКА

... 1. Способ производства флуоресцентного керамического материала с использованием одноосного горячего прессования, указанный способ включает стадии a) выбора пигментного порошка Gd2O2S, легированного M, и M представляет собой, по меньшей мере, один элемент, выбранный из группы, состоящей из Eu, Tb, Yb, Dy, Sm, Ho, Ce и/или Pr, при этом размер зерен указанного порошка, используемого для горячего прессования, составляет от 1 до 20 мкм, и указанное горячее прессование осуществляется при температуре от 1000 до 1400°C; и/или давлении от 100 до 300 МПа; b) отжига на воздухе при температуре от 700 до 1200°C в течение периода времени от 0,5 до 30 ч. 2. Способ по п.1, где между стадией a) и стадией b) осуществляется дополнительная стадия c), при этом стадия c) включает отжиг флуоресцентного керамического материала в вакууме при температуре от 1000 до 1400°C в течение периода времени от 0,5 до 30 ч. 3. Способ по п.1 или 2, где на стадии a) нелегированный порошкообразный Gd2O2S с размером зерен от 1 ...

Verfahren zur Herstellung einer Vorläufer-Lösung für die metallorganische Abscheidung unter Verwendung eines supraleitenden Oxids und ein Dünnschicht-Supraleiter

Verfahren zur Herstellung einer Vorläufer-Lösung für die metallorganische Abscheidung unter Verwendung eines supraleitenden Oxids als Ausgangsmaterial, umfassend: a) Dispergieren eines Pulvers von supraleitendem Material in einer wässerigen TFA-Säure-Lösung und deren Erwärmung, um das Pulver in der wässerigen TFA-Säure-Lösung zu lösen; b) Erhöhen der Temperatur eines heißen Substrats, wenn das Pulver vollständig gelöst und die Lösung klar ist, und kontinuierliche Erwärmung bis die Lösung eingedampft ist und in einem viskosen Gelzustand vorliegt; c) Beenden der Erwärmung, wenn die Lösung ihr Fließvermögen vollständig verliert, und Abkühlen der Lösung; und d) Lösen der Verbindung in dem bei Raumtemperatur gehärteten Gelzustand in einem organischen Lösungsmittel, um eine metallorganische Abscheidungslösung zur Beschichtung bereitzustellen.

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

Leuchtbauelement und Bildanzeige enthaltend ein fluoreszierendes Oxynitridmaterial

Ein Leuchtbauelement mit einer Emissionslichtquelle und einem fluoreszierenden Material, wobei das fluoreszierende Material ein fluoreszierendes Oxynitridmaterial ist, das als eine Hauptkomponente eine JEM-Phase enthält, die durch die allgemeine Formel MAI(Si6-zAlz)N10-zOz, wobei 0,1 ≤ z ≤ 3 ist, dargestellt ist, wobei- M La ist, wobei die JEM-Phase als ein Mutterkristall mit M1 als ein Lumineszenzzentrum vorliegt, wobei M1 ein oder zwei Elemente ist, die aus der Gruppe ausgewählt sind, die aus Ce, Eu und Tb besteht, mit M + M1 = 1, wobei das Verhältnis der Anzahl von Atomen von M1 und M 0,18 ≤ M1/M ≤ 10 beträgt, oder- M Ce ist.

Plateletverstärkter Sinterformkörper, dessen Verwendung und Verfahren zu seiner Herstellung

Sinterformkörper mit einem Matrixwerkstoff, dadurch gekennzeichnet, daß der Matrixwerkstoff mindestens eines der Platelets gemäß einer der allgemeinen Formeln Me1Al11O17, Me2Al12O19 und/oder Me3Al12O18 enthält, wobei Me1 für ein Alkalimetall, Me2' für Cadmium, Blei oder Quecksilber und Me3 für ein Seltenerdmetall steht und der Matrixwerkstoff tetragonal stabilisiertes Zirkoniumdioxid enthält.

Aluminiumnitridwerkstoffe für Anwendungen im Metallguss

Gegenstand der Erfindung ist ein Werkstoff auf Basis von Aluminiumnitrid, der für Anwendungen im Metallguss verwendet werden kann. In einer weiteren Ausführungsform ist der Gegenstand der Erfindung ein Bauteil aus Alumniumnitridwerkstoffen, die beim Aufschmelzen, Legieren oder Transport mit flüssigem Metall in Berührung kommen.

Piezoelektrische keramische Zusammensetzung und daraus hergestelltes Bauteil

SZINTILLATIONSSUBSTANZEN (VARIANTEN)

Material und Verfahren zur Abbauverhinderung von Zirconia in biomedizinische Implantate bei niedriger Temperatur

VERFAHREN ZUR HERSTELLUNG VON GESINTERTEN PORÖSEN MATERIALIEN

Three-way catalyst comprising extruded solid body.

A three way catalyst comprises an extruded solid body comprising: 10-100% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilised ceria, which catalyst comprising at least one precious metal and optionally at least one non-precious metal, wherein: (i) the at least one precious metal is carried in one or more coating layer(s) on a surface of the extruded solid body; (ii) at least one metal is present throughout the extruded solid body and at least one precious metal is also carried in one or more coating layer(s) on a surface of the extruded solid body; or (iii) at least one metal is present throughout the extruded solid body, is present in a higher concentration at a surface of the extruded solid body and at least one precious metal is also carried in one or more coating layer(s) on the surface of the extruded solid body.

Extruded SCR filter

Dielectric ceramic composition and laminated ceramic condenser

High Temperature Negative Temperature Coefficient Thermistor Material and Preparation Method Thereof

Oxidation catalyst

An oxidation catalyst comprises an extruded solid body comprising: 10-100% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilised ceria, which catalyst comprising at least one precious metal and optionally at least one non-precious metal, wherein: (i) a majority of the at least one precious metal is located at a surface of the extruded solid body; (ii) the at least one precious metal is carried in one or more coating layer(s) on a surface of the extruded solid body; (iii) at least one metal is present throughout the extruded solid body and is also present in a higher concentration at a surface of the extruded solid body; (iv) at least one metal is present throughout the extruded solid body and is also carried in one or more coating layers on a surface of the extruded solid body; or (v) at least one metal is present throughout the extruded ...

STABILISED METALLIC OXIDES

PROCESS FOR FORMING CERAMICS

IMPROVED MULLIT BODIES AND PROCEDURE FOR YOUR PRODUCTION

PARTICLE FROM ORGANIC ACID AND FEOOH (FERROXANEN) AND CERAMIC(S) AND CERAMIC(S) DIAPHRAGMS DERIVED FROM FERROXANEN

SINTERED, POLYCRYSTALLINE ZIRKONIA CONTAINING SHARPENING PARTICLES

PRODUCTION OF BLOCKFORMEN FROM A SELTNERERDHALOGENID, THEREBY MANUFACTURED BLOCKFORMEN, YOUR USE FOR THE PRODUCTION OF SINGLE CRYSTALS AND THEREBY MANUFACTURED SINGLE CRYSTALS

PROCEDURE FOR THE PRODUCTION OF AN PHOTO-SENSITIVE CERAMIC COMPOSITION AND MULTILEVEL SUBSTRATE THEREBY

RED LIGHT EMISSION LUMINESZIERENDE OXYNITRIDMATERIALIEN

GROUPS OF CERAMIC HOLLOW FIBERS, PROCEDURES FOR THEIR PRODUCTION AND THEIR USE

FAST SCINTILLATOR WITH HIGH LUMINOUS EFFICIENCY

DIELECTRIC CERAMIC(S) COMPOSITION AND CERAMIC(S) FILM CAPACITOR

PEROWSKITSTRUKTUR TITANATES OR THEIR DERIVATIVES AND YOUR APPLICATIONS

PROCEDURE FOR THE PRODUCTION OF A CATHODE

PROCEDURE FOR THE PRODUCTION OF ARTICLES FROM GLASS AS WELL AS SO MANUFACTURE OF GLASS CERAMIC ARTICLES

DIELECTRIC CERAMIC COMPOSITION AND ELECTRONIC DEVICE

LIGHT WITH ANIMAL END OF DEVICE WITH A POLYPHASE CERAMIC(S) MATERIAL ON SIALONBASIS

PIEZOELECTRIC CERAMIC COMPOSITION AND FROM IT MANUFACTURED CONSTRUCTION UNIT

CINDER LINE SEAL FOR NOZZLE WITH SUBMERGED ENTRANCE AND COMPOSITION FOR IT

Process of preparing mineral material with particular ceria-containing zirconium oxide grinding beads, obtained products and their uses

An object of the present invention is to provide a a process to grind at least one mineral material in the presence of ceria (CeO2)-containing zirconium oxide grinding beads having a specific ceria content (of between 14 and 20 % by weight relative to the total weight of said bead, preferably of between 15 and 18 %, and most preferably of approximately 16 %), and a specific average grain size (of less than 1 m, preferably of less than 0.5 m, and most preferably of less than 0.3 m), wherein such beads are more resistant to wear than conventional beads of the prior art. An other object of the present invention lies in the ground material in the form of an aqueous suspension and in the form of a dry product. An other object of the present invention lies in the uses of such products in any sector making use of mineral materials, and notably in the paper, paint and plastic industries.

High light yield fast scintillator

CERAMIC ANODE SOLID OXIDE FUEL CELL

Scintillation substances (variants)

Treated refractory material and methods of making

Ceramic composite material consisting of aluminium oxide and zirconium oxide as main constituents

The invention relates to a composite material consisting of aluminium oxide as a ceramic matrix and zirconium oxide dispersed therein. The invention also relates to a method for the production thereof and to the use of same.

Composite nanoparticle materials and method of making the same

Molten and cast refractory product with high zirconia content

Biosoluble inorganic fiber and method for producing same

An inorganic fiber which comprises a biosoluble fiber and a cationic surfactant adhering thereto, wherein the amount of the surfactant is 0.01-2 wt%, taking the whole inorganic fiber carrying the surfactant adhered thereto as 100 wt%.

Sintered alumina particle

The invention relates to a sintered particle manufactured from a feedstock containing 4 wt % to 25 wt % of zircon relative to the weight of the dry feedstock, and having the following chemical composition, in weight percent for a total of 100%: 70 % ≤ Al ...

Slagline sleeve for submerged entry nozzle and composition therefor

Wear resistant ceramic

CERAMIC LAMINATED SINTERED BODIES, A METHOD OF PRODUCING THE SAME, ELECTROCHEMICAL CELLS, CONDUCTIVE INTERCONNECTORS FOR THE SAME AND ELECTROCHEMICAL DEVICES

A laminated ceramic sintered compact comprised of a porous ceramic article having a thickness of 300 .mu.m or more and a dense ceramic article having a thickness of 25 .mu.m or less, characterized in that it exhibits a helium leak rate of 10-6Pa .cndot. m3/s or less; and a method for preparing a laminated ceramic sintered compact comprised of a porous ceramic matrial (8) having a thickness of 300 .mu.m or more and a dense ceramic material (9) having a thickness of 25 .mu.m or less, characterized in that it comprises laminating a green formed product (5) for the porous ceramic material and a green formed product (3) for the dense ceramic material, pressing the resultant laminate by the cold isostatic pressing method to give a press-formed article (6), and sintering the press-formed article (6), to provide the laminated ceramic sintered compact. The laminated ceramic sintered compact allows the improvement of the efficiency in the operation of a cell, the suppression of deterioration of the ...

REFRACTORY MATERIAL FOR CASTING A RARE-EARTH ALLOY AND ITS PRODUCTION METHOD AS WELL AS METHOD FOR CASTING THE RARE-EARTH ALLOYS

In casting a rare earth alloy into a sheet (6) using a tundish (3, 13), as a refractory for a tundish which can be used for dispensing with a preheating step for the purpose of improving the flow of a melt (2), use is made of a refractory which consists substantially of 70 wt.% or more of Al2O3 and 30 % or less of SiO2 or consists substantially of 70 wt.% or more of ZrO2 and 30 % or less of one or more of Y2O3, Ce2O3, CaO, MgO, Al2O3, TiO2 and SiO2, and has a bulk density of 1 g/cm3, a thermal conductivity in a temperature range of 1200 to 1400 ~C of 0.5 kcal/(mh ~C) or less, and a heat loss under a heating condition of one hour at 1400 ~C of 0.5 wt.% or less.

PYROLYSIS REACTOR MATERIALS AND METHODS

In one aspect, the invention includes a reactor apparatus for pyrolyzing a hydrocarbon feedstock, the apparatus including: a reactor component comprising a refractory material in oxide form, the refractory material having a melting point of at least 20600C and which remains in oxide form when exposed to a gas having an oxygen partial pressure of 10"15 bar, a carbon partial pressure above the carbon partial pressure of the zirconium carbide and zirconium oxide phase transition at the same temperature, and at temperatures below the temperature of the zirconium triple point at the oxygen partial pressure of 10"15 bar; and ii) when exposed to a gas having an oxygen partial pressure of 10"15 bar and at temperatures above the zirconium triple point at the oxygen partial pressure of 10"15 bar. In some embodiments, the reactor comprises a regenerative pyrolysis reactor apparatus and in other embodiments it includes a reverse flow regenerative reactor apparatus. In other aspects, this invention ...

CERAMIC ANODE SOLID OXIDE FUEL CELL

A solid oxide fuel cell including a cathode, at least an electrolyte membrane, and an anode comprising a ceramic material and an alloy com~ prising nickel and at least a second metal, said alloy having an average particle size not higher than 20 nm.

METHOD OF MAKING ARTICLES FROM GLASS AND GLASS CERAMIC ARTICLES SO PRODUCED

Method of making an article, the method comprising coalescing a plurality of the glass particles. The article may comprise glass, glass-ceramic, and/or crystalline ceramic. Examples of articles include kitchenware (e.g., plates), dental brackets, and reinforcing fibers, cutting tool inserts, abrasives, and structural components of gas engines, (e.g., valves and bearings).

CATALYST-CONTAINING OXYGEN TRANSPORT MEMBRANE

A method is described of producing a catalyst-containing composite oxygen ion membrane and a catalyst-containing composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (Ln1-xAx)wCr1-yByO3-d and a doped zirconia. Adding certain catalyst metals into the fuel oxidation layer not only enhances the initial oxygen flux, but also reduces the degradation rate of the oxygen flux over long-term operation. One of the possible reasons for the improved flux and stability is that the addition of the catalyst metal reduces the chemical reaction between the (Ln1-xAx)wCr1-yByO3-d and the zirconia phases during membrane fabrication and operation, as indicated by the X-ray diffraction results.

COMPOSITIONS FOR EROSION AND MOLTEN DUST RESISTANT ENVIRONMENTAL BARRIER COATINGS

Coating systems are provided for positioning on a surface of a substrate, along with the resulting coated components and methods of their formation. The coating system may include a layer having a compound of the formula: Al-b B b Z1-d D d MO6 where: A is Al, Ga, In, Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Fe, Cr, Co, Mn, Bi, or a mixture thereof; b is 0 to about 0.5; Z is Hf, Ti, or a mixture thereof; D is Zr, Ce, Ge, Si, or a mixture thereof; d is 0 to about 0.5; and M is Ta, Nb, or a mixture thereof.

MULTI-INLET GAS DISTRIBUTOR FOR CHEMICAL VAPOR DEPOSITION COATING OF TRISO PARTICLES

A multi-inlet gas distributor for a fluidized bed chemical vapor deposition reactor may include a distributor body having an inlet surface, an exit surface opposed to the inlet surface, and a side perimeter surface. The distributor body may also include multiple-inlets evenly spaced from each other, wherein the multiple-inlets penetrate the distributor body from the inlet surface to a first depth. The distributor body may additionally include cone-shaped apertures connecting to corresponding ones of the multiple-inlets at the first depth and extend from the first depth toward the exit surface. An apex may be formed on the exit surface at the intersection of the cone-shaped apertures.

HIGH ENERGY RESOLUTION SCINTILLATORS HAVING HIGH LIGHT OUTPUT

A scintillator composition includes a matrix material, where the matrix material includes an alkaline earth metal and a lanthanide halide. The scintillator composition further includes an activator ion, where the activator ion is a trivalent ion. In one embodiment, the scintillator composition includes a matrix material represented by A2LnX7, where A includes an alkaline earth metal, Ln includes a lanthanide ion, and X includes a halide ion. In another embodiment, the scintillator composition includes a matrix material represented by ALnX5, where A includes an alkaline earth metal, Ln includes a lanthanide ion, and X includes a halide ion. In these embodiments, the scintillator composition includes an activator ion, where the activator ion includes cerium, or bismuth, or praseodymium, or combinations thereof.

NITRIDE PHOSPHOR AND METHOD FOR PREPARATION THEREOF, AND LIGHT EMITTING DEVICE

To provide a phosphor containing a comparatively much red component and having high light emitting efficiency, high brightness and further high durability, the nitride phosphor is represented by the general formula L X M Y N((2/3)X+(4/3)Y):R or L X M Y O Z N((2/3)X+(4/3)Y-(2/3)Z):R (wherein L is at least one or more selected from the group II Elements consisting of Mg, Ca, Sr, Ba and Zn, M is at least one or more selected from the Group IV Elements in which Si is essential among C, Si and Ge, and R is at least one or more selected from the rare earth elements in which Eu is essential among Y, La, Ce, Px, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er and Lu.); contains the another elements.

METHOD FOR MAKING METAL OXIDES

A method of producing porous complex oxides includes the steps of providing a mixture of a) precursor elements suitable to produce the complex oxide; or b) one or more precursor elements suitable to produce particles of the complex oxide and one or more metal oxide particles; and c) a particulate carbon- containing pore-forming material selected to provide pore sizes in the range of approximately 7 nm to 250 nm, and treating the mixture to (i) form the porous complex oxide in which two or more of the precursor elements from (a) above or one or more of the precursor elements and one or more of the metals in the metal oxide particles from (b) above are incorporated into a phase of the complex metal oxide and the complex metal oxide has grain sizes in the range of about 1 nm to 150 nm; and (ii) remove the pore-forming material under conditions such that the porous structure and composition of the complex oxide is substantially preserved. The method may be used to produce non-refractory metal ...

SCINTILLATION SUBSTANCES (VARIANTS)

The inventions relate to the scintillation substances and they may be utilized in nuclear physics, medecine and oil industry for recording and measurements of X-ray, gamma -ray and alpha- ray, nondestructive testing of solid states structure, three-dimensional positron-emission tomography and X-ray computer tomography and fluorography. The scintillating substances based on a silicate comprising a lutetium (Lu) and cerium (Ce) characterised in that the compositions of substances are represented by the chemical formulae CexLu2+2y- xSi1-yO5+y CexLiq+pLu2-p+2y-x-zAzSi1-yO5+y-p CexLiq+pLu9,33-x-p-z 0,67AzSi6O26- p where A is at least one element selected from the group consisting of Gd, Sc, Y, La, Eu, Tb, x ia a value between 1x10-4f. units and 0.02 f. units., y is a value between 0.024 f. units and 0.09 f. units, z is a value does not exceeding 0.05 f. units, q is a value does not exceeding 0.2 f. units, p is a value does not exceeding 0.05 f. units, CexLi1+q+pLu9-x-p-zAzSi6O26-p z is a value ...

PROCESS FOR MANUFACTURING AN LTM PEROVSKITE PRODUCT

La présente invention concerne un produit fondu comportant du pérovskite de LTM, L désignant le lanthane, T étant un élément choisi parmi le strontiu m, le calcium, le magnésium, le baryum, l'yttrium, l'ytterbium, le cérium et des mélanges de ces éléments, et M désignant le manganèse.

POLYMERISED INORGANIC-ORGANIC PRECURSOR SOLUTIONS

Polymerised inorganic-organic precursor solution obtainable according to a process comprising the steps of (a) forming a solution of at least one metal cation and an organic compound and (b) heating the solution to a temperature between 20 -- 300.degree.C to form a polymerised solution of precursor for nano--sized oxides, and (c) concluding the heating when the room temperature vis-cosity of the solution is from 10 to 500 mPa.cndot.s.

HIGH LIGHT YIELD FAST SCINTILLATOR

The invention concerns a material comprising a compound of formula Pr(1-x-y)LnyCexX3 wherein - Ln is chosen from the elements or mixtures of at least two elements, of the group: La, Nd, Pm, Sm, Eu, Gd, Y, - X is chosen from the halides or mixtures of at least two halides, of the group: Cl, Br, I, - x is above 0.0005 and is lower than 1 , - y is from 0 to less than 1 and - x+y) is less than 1 , and its use as scintillation detector, for example in PET scanner with time of flight apabilities.

METHOD FOR FABRICATING A COLOURED, ZIRCONIA-BASED ARTICLE; IN PARTICULAR AN ORANGE COLOURED ARTICLE; AND A COLOURED, ZIRCONIA-BASED ARTICLE OBTAINED ACCORDING TO THE METHOD

The invention concerns a method for producing an orange item made from zirconia characterised by the fact that it comprises the successive steps consisting of producing a first mixture comprising zirconia powder, 3 to 20% by weight of at least one stabiliser chosen from the group of oxides comprising yttrium oxide, magnesium oxide, and calcium oxide alone or in combination, 0.1% to 5% by weight of at least one element intended to produce a vitreous phase, and chosen from the group comprising silicon oxide, aluminium oxide, lithium oxide and yttrium oxide alone or in combination, 1% to 6% by weight of a cerium oxide powder; producing a second mixture comprising said first mixture and a binder; producing a granulated mixture by granulating said second mixture; forming a blank by giving this granulated second mixture the shape of the desired item; sintering in air for at least thirty minutes at a temperature of between 1,250 and 1,500 degrees C, and annealing the desired item at a temperature ...

POWDER FOR THERMAL SPRAYING, THERMAL SPRAYING METHOD, AND THERMALLY SPRAYED COATING

To provide powder for thermal spraying, a method of thermal spraying, and a thermally sprayed coating, which can efficiently work supplying of a dry state powder by using a powder supplying apparatus with a thermal spraying apparatus, and which prevent variation and pulsation or lowering of supplied amount of powder and achieve a required film forming rate, and can obtain a denser coating on the surface of the substrate to be thermally sprayed. [Solution] Powder for thermal spraying 1 is a powder mixture obtained by mixing ceramic powder A whose particle diameter is D1 and ceramic powder B whose particle diameter is D2, wherein D1 is 0.5 to 12 µp? as a median diameter, D2 is 0.003 to 0.100 µ?? as an average particle diameter converted from the BET specific surface area, and when, in the powder mixture, the total weight of the ceramic powder A to be used whose prescribed particle diameter D1 is W1, and the total weight of the ceramic powder B to be added to the ceramic powder A is W2, an ...

SINTERED COMPACT AND CUTTING TOOL

This sintered body includes a first material which is a cubic boron nitride, a second material which is an oxide of zirconium, and a third material which is an oxide of aluminum. The second material includes a cubic ZrO2 and ZrO, and the third material includes an a-type Al2O3. The sintered body satisfies 0.9=Izro2(111)/Ial(110)=30 and 0.3=Izro(111)/Ial(110)=3, where the X-ray diffraction intensities of the a-type Al2O3 (110) plane, the cubic ZrO2 (111) plane, and the ZrO (111) plane are respectively represented as Ial(110), Izro2(111), and Izro(111).

FUSED CERAMIC PRODUCT, METHOD OF FABRICATION AND USES

Produit fondu sous la forme d'une particule présentant une sphéricité supérieure ou égale à 0,6, présentant la composition chimique suivante, en pourcentages en masse sur la base des oxydes et pour un total de 100 %: (ZrO2 + HfO2) : complément à 100 %, 6 % < CeO2 < 31 %, 0,8 % < Y2O3 < 8,5 %, 0 % < AI2O3 < 30 %, 0 % < SiO2 < 17 %, 0 < TiO2 < 8,5 %, 0 < MgO < 6 %, et autres oxydes < 1 %, pourvu que, en désignant par = C = le rapport en masse CeO2/(ZrO2+ HfO2) et par = Y = le rapport en masse Y2O3/(ZrO2 + HfO2), 0 < C < 0,6 et Y > 0,02 et Min(63,095.Y2 - 11,214.Y+ 0,4962; 0,25) < C (I) et C = 250.Y2 - 49,1.Y + 2,6 (II).

COMPOSITE ELECTROLYTE CONSISTING OF FULLY STABILIZED ZIRCONIA AND PARTIALLY STABILIZED ZIRCONIA

Composite electrolyte materials comprising at least one component from fully stabilized zirconia (such as 10Sc1CeSZ) and at least one component from partially stabilized zirconia (such as 6Sc1CeSZ) as the electrolyte material for solid state electrochemical devices.

BODY MADE OF A CERAMIC MATERIAL

The present invention relates a body made of a ceramic material stabilized by a stabilizing agent, characterized in that the body comprises a surface region extending from the surface of the body to a predetermined depth, the stabilizing agent being enriched in said surface region.

FUSED CERAMIC BEADS

A method of manufacturing a colored article; in particular orange colored; zirconia and decorative article colored zirconia obtained according to this method.

Linvention concerne un procédé de fabrication dun article orange à base de zircone caractérisé par le fait quil comprend les étapes successives consistant à réaliser un premier mélange comprenant une poudre de zircone, 3 à 20% en poids dau moins un stabilisant choisi parmi lensemble des oxydes comprenant loxyde dyttrium, loxyde de magnésium, et loxyde de calcium seuls ou en combinaison, 0,1% à 5% en poids dau moins un élément destiné à réaliser une phase vitreuse, et choisi parmi lensemble comprenant de loxyde de silicium, de loxyde daluminium, de loxyde lithium et de loxyde dyttrium seuls ou en combinaison, 1% à 6% en poids dune poudre doxyde de cérium; réaliser un deuxième mélange comprenant ledit premier mélange et un liant; réaliser un mélange granulé en opérant une granulation dudit deuxième mélange; former une ébauche en conférant à ce deuxième mélange granulé la forme de larticle désiré; fritter sous air pendant au moins trente minutes à une température comprise entre 1250 et 1500 ...

Colored one sintered body on zircon oxide basis, method for production the same and use as decoration element.

Diese Erfindung stellt einen gefärbten gesinterten Körper auf Zirkonoxidbasis zur Verfügung, der hauptsächlich aus Zirkonoxid besteht, das einen Stabilisator beinhaltet, das Aluminiumoxid und Nickelspinell enthält und einen neuen Farbton besitzt, sowie eine Methode zur Herstellung eines derartigen gesinterten Körpers auf Zirkonoxidbasis. Der gefärbte gesinterte Körper auf Zirkonoxidbasis ist nicht nur für äusserst dekorative Produkte wie Uhren einsetzbar, sondern auch für Messer, Pinzetten, Lehren für die Maschinenbearbeitung, Haltevorrichtungen für elektronische Bauteile und Gleitelemente.

HIGH EFFECTIVE FUEL ELECTRODE FOR SOLID-OXIDE ELECTROCHEMICAL ELEMENT

REFRACTORY ARTICLE WITH HIGH ZIRCONIUM DIOXIDE CONTENT

МЕМБРАНА ДЛЯ ВЫДЕЛЕНИЯ КИСЛОРОДА

В заявке описана композиция, содержащая компонент с электронной проводимостью и компонент с кислородно-ионной проводимостью, отличающаяся тем, что компонент с электронной проводимостью является также проводником ионов кислорода, причем композиция применима в мембране с избирательной проницаемостью для кислорода для выделения кислорода из газообразной смеси, содержащей кислород, в частности из воздуха, и такое выделение может осуществляться в реакторе, имеющем первую и вторую зоны, в первую из которых подают кислородсодержащий газ, а во вторую - реагент, и во второй зоне реактора протекает реакция с потреблением кислорода.

ПЛАВЛЕННЫЙ КЕРАМИЧЕСКИЙ ПРОДУКТ, СПОСОБ ПРОИЗВОДСТВА И ПРИМЕНЕНИЕ

Плавленый продукт в виде частицы, характеризующейся сферичностью, большей или равной 0,6, имеющий следующий химический состав, выраженный в мас.% на основе оксидов при общей сумме 100%: при условии, что где С обозначает массовое соотношение CeO2/(ZrO2+HfO2) и Y обозначает массовое соотношение Y2O3/(ZrO2+HfO2).

СПЕЧЕННЫЙ ШАР НА ОСНОВЕ ДИОКСИДА ЦИРКОНИЯ И ОКСИДА ЦЕРИЯ

Спеченный шар, демонстрирующий следующие данные химического анализа (мас.%) при условии, что общая сумма составляет 100%: ZrO2+HfO2=78-85%; CeO2=15%; Al2O3 > 0,1%; добавка > 0,1%; примеси < 1%; где добавка выбрана из MnO, MnO2, Fe2O3, CuO, TiO2, Y2O3, Sb2O3, ZnO и их смесей. Применение в области микроизмельчения и микродисперсии.

СПОСОБ ПОЛУЧЕНИЯ КАТАЛИЗАТОРОВ И ПОЛУЧЕННЫЕ НА ЕГО ОСНОВЕ КАТАЛИЗАТОРЫ

Изобретение предлагает способ получения катализаторов путем порошкового инжекционного формования и полученные на его основе катализаторы, где катализаторы изготавливают путем приготовления керамического состава с регулируемыми температурой реологическими свойствами, содержащего каталитические компоненты, нагрева данного порошкового состава вплоть, по меньшей мере, до температуры перехода в текучее состояние, формования образца путем впрыскивания текучего порошкового состава в инжекционную форму с последующим охлаждением инжектированного порошкового состава ниже температуры перехода в текучее состояние, отсоединения формованного образца и спекания формованного образца с образованием керамического катализатора. Альтернативно может быть исходно сформована керамическая структура с последующим покрытием керамической структуры одним или несколькими каталитическими соединениями.

СПОСОБ ПОЛУЧЕНИЯ ПОЛИКРИСТАЛЛИЧЕСКИХ БЛОКОВ ГАЛОГЕНИДОВ РЕДКОЗЕМЕЛЬНЫХ МЕТАЛЛОВ, ПОЛИКРИСТАЛЛИЧЕСКИЙ БЛОКИ И МОНОКРИСТАЛЛЫ, ПОЛУЧЕННЫЕ ИЗ ПОЛИКРИСТАЛЛИЧЕСКИХ БЛОКОВ

Изобретение относится к способу получения поликристаллического блока галогенида формулы AeLn1X(3f+e); в которой Ln означает один или больше редкоземельных металлов, Х означает один или больше атомов галогенида, выбранных из Сl, Br или I, и А означает один или больше щелочных металлов, таких как К, Li, Na, Rb или Cs, е, которое может быть равно нулю, является меньше или равняться , и f больше или равно 1, которое имеет низкое содержание воды и оксигалогенида, который включает стадию нагревания смеси, которая имеет, с одной стороны, как минимум одно соединения с как минимум одной Ln-X связью и, с другой стороны, достаточное количество NH4X для того, чтобы получить желаемое содержание оксигалогенида, причем упомянутая стадия нагревания приводит к расплавлению массы, который содержит галогенид редкоземельного металла, где за указанной стадией нагревания наступает стадия охлаждения, и на стадии нагревания после достижения 300 ºС температура не снижается ниже 200 ºС до того, как получена расплавленная ...

БЫСТРЫЙ СЦИНТИЛЛЯТОР С ВЫСОКИМ СВЕТОВЫМ ВЫХОДОМ

Настоящее изобретение относится к материалу, содержащему соединение формулы Pr(1-х-у)LnyCexX3, где Ln выбирается из элементов или смесей по меньшей мере двух элементов, из группы La, Nd, Pm, Sm, Eu, Gd, Y, X выбирается из галогенидов или смесей по меньшей мере двух галогенидов из группы Cl, Br, I, х выше 0,0005 и ниже чем 1, у равен от 0 до менее чем 1, и х+у меньше чем 1, и к его использованию в качестве детектора сцинтилляций, например в PET сканере с возможностью регистрации времени пролета.

РОЗПЛАВЛЕНИЙ ТА ВИЛИТИЙ ВОГНЕТРИВКИЙ МАТЕРІАЛ З ВИСОКИМ ВМІСТОМ ДІОКСИДУ ЦИРКОНІЮ І СПОСІБ ЙОГО ОДЕРЖАННЯ

Винахід стосується розплавленого і вилитого вогнетривкого матеріалу, що містить понад 85 % діоксиду цирконію (ZrO2), для застосування переважно в скловарних печах і способу його одержання. Матеріал відрізняється тим, що має такий склад, виражений у відсотках від ваги оксидів: ZrO2 > 92 %, SiO2: від 2 до 8 %, Na2O: від 0,12 до 1 %, Аl2О3: від 0,2 до 2 %, 0,5 % Y2O3+ CaO 2,6 % при умові, що Y 2O3: від 0,3 до 2 %, або що CaO: від 0,5 до 1,93 %.

ЗАГУЩЕНИЕ ЭЛЕКТРОЛИТОВ НА ОСНОВЕ ОКСИДА ЦЕРИЯ

Предлагается способ получения электролитов на основе оксида церия с плотностью больше, чем 97% от теоретически достижимой плотности, при температуре ниже чем 1200°С, предпочтительно приблизительно 1000°С. Электролит имеет концентрацию двухвалентных катионов минус установленную концентрацию трехвалентных катионов между 0, 01 и 0,1 мол.%.

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.

Phosphor, production method thereof and light emitting instrument

A light emitting element includes a light-emitting source for emitting light at a wavelength of 330 to 500 nm and a constituent phosphor. The constituent phosphor includes a compound including M, A, Al, O, and N, where M is at least one kind of element selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb, and A is at least one kind of element selected from C, Si, Ge, Sn, B, Ga, In, Mg, Ca, Sr, Ba, Sc, Y, La, Gd, Lu, Ti, Zr, Hf, Ta, and W.

Dielectric ceramic and laminated ceramic capacitor

A dielectric ceramic and a laminated ceramic capacitor using the dielectric ceramic are achieved which provide favorable thermal shock resistance without damaging properties or characteristics such as dielectric properties, insulation properties, temperature characteristics, and characteristics in high temperature loading, even when the dielectric layers are reduced in thickness and the number of stacked layers increased. The dielectric ceramic contains, as its main constituent, a barium titanate based compound represented by the general formula ABO 3 , and a crystalline oxide containing Al, Mg, and Si is present as secondary phase grains in the dielectric ceramic.

Light-emitting device with a luminescent medium, corresponding lighting system comprising the light-emitting device and corresponding luminescent medium

The invention relates to a light emitting device ( 1 ) with high colour rendering comprising a wavelength converting member ( 2 ) with a luminescent medium for wavelength conversion of blue light and/or ultraviolet light ( 10 ) into red light and/or yellow and/or green light and a light source ( 3 ) emitting blue light ( 10 ) and/or ultraviolet light arranged to pump the luminescent medium, said luminescent medium essentially having a main phase of a solid state host material which is doped with Ce 3+ -ions. According to the invention the host material comprises ions of a further rare-earth material Ln, wherein the host material is selected such that the emission energy of the 5d-4f emission on Ce 3+ -ions is energetically higher than the absorption energy into an upper 4f n state of the further rare-earth material Ln, and wherein the light emission of wavelength converted light is caused by an intra-atomic 4f n -4f n transition within the ions of the further rare-earth material. The invention further relates to a corresponding lighting system comprising the light-emitting device and a corresponding luminescent medium.

Green emitting material

The invention relates to an improved green emitting material of the form M I 3-x-y M II x Si 6-x Al x O 12 N 2 :Eu y , whereby M I is an earth alkali metal and M II is a rare earth metal or Lanthanum. This material can be made as a ceramic using a low temperature sintering step, resulting in a better and more uniform ceramic body.

Dielectric composition having high dielectric constant, multi layered ceramic condensers comprising the same, and method of preparing for multi layered ceramic condensers

A dielectric composition having a high dielectric constant, multi layered ceramic condensers comprising the same, and a method of preparing for multi layered ceramic condensers. The dielectric composition includes: a compound represented by general formula (Ba 1-X Ca x ) m (Ti 1-y Zr y )O 3 (0.995≦m≦1.010, 0.001≦x≦0.10, 0.001, 0.001≦y≦0.20) as a main component; an Al oxide as a first sub-component; at least one metal selected from a group consisting of Mg, Sr, Ba, Ca, and Zr and the salt thereof, as a second sub-component; at least one metal selected from a group consisting of Sc, Y, La, Ac, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu and the salt thereof, as a third sub-component; at least one metal selected from a group consisting of Cr, Mo, W, Mn, Fe, Co, and Ni and the salt thereof, as a fourth sub-component; and a fifth sub-component selected from Si containing glass forming compounds.

Oxidation catalyst

An oxidation catalyst comprises an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilised ceria, which catalyst comprising at least one precious metal and optionally at least one non-precious metal, wherein: (i) a majority of the at least one precious metal is located at a surface of the extruded solid body; (ii) the at least one precious metal is carried in one or more coating layer(s) on a surface; (iii) at least one metal is present throughout the extruded solid body and in a higher concentration at a surface; (iv) at least one metal is present throughout the extruded solid body and in a coating layer(s) on a surface; or (v) a combination of (ii) and (iii).

Shaded zirconium oxide articles and methods

A dental article includes yttria stabilized tetragonal zirconia polycrystalline ceramic, and no more than about 0.15 wt. % of one or more coloring agents of one or more of: Pr, Tb, Cr, Nd, Co, oxides thereof, and combinations thereof, whereby the dental article is provided with a color corresponding to a natural tooth shade; and wherein the dental article has a flexural strength of at least about 800 MPa. Corresponding methods are also described.

Biosoluble inorganic fiber

An inorganic fiber having the following composition: 71 wt % to 80 wt % of SiO 2 , 18 wt % to 27 wt % of CaO, 0 to 3 wt % of MgO, and 1.1 wt % to 3.4 wt % of Al 2 O 3 , wherein the amount of each of ZrO 2 and R 2 O 3 (R is selected from Sc, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y or mixtures thereof) is 0.1 wt % or less, the amount of each alkaline metal oxide is 0.2 wt % or less and the total amount of SiO 2 , CaO, MgO and Al 2 O 3 is 99 wt % or more.

Tablet for ion plating, production method therefor and transparent conductive film

A tablet for ion plating which enables to attain high rate film-formation of a transparent conductive film suitable for a blue LED or a solar cell, and a noduleless film-formation not generating splash, an oxide sintered body most suitable for obtaining the same, and a production method thereof. A tablet for ion plating obtained by processing an oxide sintered body comprising indium and cerium as oxides, and having a cerium content of 0.3 to 9% by atom, as an atomicity ratio of Ce/(In+Ce), characterized in that said oxide sintered body has an In 2 O 3 phase of a bixbyite structure as a main crystal phase, has a CeO 2 phase of a fluorite-type structure finely dispersed as crystal grains having an average particle diameter of equal to or smaller than 3 μm, as a second phase; and the oxide sintered body is produced by mixing raw material powder consisting of indium oxide powder with an average particle diameter of equal to or smaller than 1.5 μm, then molding the mixed powder, and sintering the molding by a normal pressure sintering method, or molding and sintering the mixed powder by a hot press method.

Luminescent Ceramic Composite Converter and Method of Making the Same

A luminescent converter for a light emitting element (e.g., LED) includes a transparent, sol-gel-derived ceramic matrix having particles of at least one type of phosphor embedded therein that change a wavelength of the input light to light that has a different wavelength. The ceramic matrix is 20-80% porous with a majority of the pores having a diameter in a range of 2-20 nm. A method of making this converter includes preparing a sol-gel ceramic matrix embedded with the particles of phosphor in the matrix, and drying the matrix at no more than 600° C. to form the converter.

Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus

A piezoelectric element comprises a piezoelectric layer consisting of a complex oxide having a perovskite structure containing bismuth and iron and electrodes provided to the piezoelectric layer. The complex oxide further contains a first dopant element that is at least one selected from the group consisting of sodium, potassium, calcium, strontium and barium, and a second dopant element that is cerium.

Process for production of scandia-stabilized zirconia sheet, scandia-stabilized zirconia sheet obtained by the process, and scandia-stabilized zirconia sintered powder

The process for production of a scandia-stabilized zirconia sheet according to the present invention is characterized in comprising the steps of pulverizing a scandia-stabilized zirconia sintered body to obtain a scandia-stabilized zirconia sintered powder having an average particle diameter (De) determined using a transmission electron microscope of more than 0.3 μm and not more than 1.5 μm, and an average particle diameter (Dr) determined by a laser scattering method of more than 0.3 μm and not more than 3.0 μm, and a ratio (Dr/De) of the average particle diameter determined by the laser scattering method to the average particle diameter determined using the transmission electron microscope of not less than 1.0 and not more than 2.5; preparing a slurry containing the scandia-stabilized zirconia sintered powder and a zirconia unsintered powder, wherein a percentage of the scandia-stabilized zirconia sintered powder to a sum of the scandia-stabilized zirconia sintered powder and the zirconia unsintered powder in the slurry is not less than 2 mass % and not more than 40 mass %; forming the slurry into a greensheet; and sintering the greensheet.

Scintillation crystal including a rare earth halide, and a radiation detection system including the scintillation crystal

A scintillation crystal can include Ln (1-y )RE y X 3 , wherein Ln represents a rare earth element, RE represents a different rare earth element, y has a value in a range of 0 to 1, and X represents a halogen. In an embodiment, RE is Ce, and the scintillation crystal is doped with Sr, Ba, or a mixture thereof at a concentration of at least approximately 0.0002 wt. %. In another embodiment, the scintillation crystal can have unexpectedly improved linearity and unexpectedly improved energy resolution properties. In a further embodiment, a radiation detection system can include the scintillation crystal, a photosensor, and an electronics device. Such a radiation detection system can be useful in a variety of radiation imaging applications.

Luminescent particles, methods and light emitting devices including the same

A luminescent particle includes an interior portion of the luminescent particle comprising a luminescent compound that reacts with atmospherically present components and a passivating layer on an outer surface of the luminescent particle that is operable to inhibit the reaction between the luminescent compound and the atmospherically present components.

Phosphor and leds containing same

There is herein described a phosphor for use in white pc-LED applications. The phosphor has a composition represented by (Y 1-x-y Gd x Ce y ) 3 (Al 1-z Sc z ) 5 O 12 wherein 0<x≦0.3, 0<y≦0.04 and 0<z≦0.3. White pc-LEDs containing the phosphor exhibit less sensitivity to variations in the blue emission of LED dies than pc-LEDs containing conventional YAG:Ce and YGdAG:Ce phosphors. The phosphor may used in multiple pc-LED configurations including as a sintered ceramic converter or applied as a powder dispersed in a silicone encapsulant.

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.

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.

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.

Method for producing catalysts and catalysts thereof

The invention relates to a process to produce catalysts by powder injection moulding and the catalysts thereof, wherein the catalysts are made by preparing a ceramic formulation with temperature controlled rheological properties comprising catalytic components, heating the powder formulation up to at least the fluid state transition temperature, shaping a sample by injecting the fluid powder formulation into an injection mould followed by cooling the injected powder formulation below the fluid state transition temperature, de-binding the shaped sample, and sintering the shaped sample to form a ceramic catalyst. Alternatively the ceramic structure may be formed initially followed by a coating of the ceramic structure by one or more catalytic compounds.

Dielectric Ceramic Material and Multilayer Ceramic Capacitor Using the Same

A dielectric ceramic material comprises a primary component of barium titanate (BaTiO 3 ) and at least one additive component. The additive component has a mole percentage from 1% to 50% and is selected from the group consisting of lithium tantalite (LiTaO3), barium cerate (BaCeO 3 ), sodium metaniobate (NaNbO 3 ) and the combinations thereof.

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 Heating Element

A heating element can comprise a ceramic material doped with various elements. The heating element can be heated by forcing a fuel to flow through the ceramic material, where the fuel interacts with the dopants. The interaction can produce energy in the form of heat. Inventive aspects of the present material include apparatus and methods for modulation of the heat energy, physical features providing for an increase in the rate of heat release, optimization of materials and material morphology for quantity and efficiency of heat release and provision for fueling and maintenance.

Solid oxide fuel cell

Provided is a solid oxide fuel cell having a service life of approximately 90,000 hours, a level required to encourage the widespread use of SOFC. The solid oxide fuel cell according to the present invention comprises a solid electrolyte layer, an oxygen electrode layer provide to one side of the solid electrolyte layer, and a fuel electrode layer provide to the other side of the solid electrolyte layer. The oxygen electrode layer is made from a material including iron or manganese, the solid electrolyte layer is made from a scandia-stabilized zirconia electrolyte material containing alumina, and the solid electrolyte layer has a lanthanoid oxide and/or yttria dissolved therein.

Translucent polycrystalline material and manufacturing method thereof

Provided is a method for manufacturing a translucent polycrystalline material with optical properties continuously varying in the material. A slurry including single crystal grains that are acted upon by a force when placed in a magnetic field is immobilized in a gradient magnetic field with a spatially varying magnetic flux density and then sintered. For example, where a slurry including single crystal grains of YAG doped with Er and single crystal grains of YAG undoped with a rare earth material is immobilized in the gradient magnetic field, the region with a strong magnetic field becomes a laser oscillation region that is rich in Er-doped YAG, whereas the region with a weak magnetic field becomes a translucent region rich in YAG undoped with a rare earth material. A polycrystalline material having a core with laser oscillations and a guide surrounding the core are obtained at once.

Use of monazite or xenotime solution precursors to increase the density and shear strength of oxide composites

Aqueous precursor solutions are described that comprise at least one monazite-based material precursor, at least one xenotime-based material precursor or a combination thereof; and a plurality of fine suspended particles of an oxide material. Contemplated oxide composites, as described herein, comprise a plurality of fibers surrounded by at least one monazite or xenotime-based material, wherein the oxide composite has nearly a fully dense matrix. Contemplated embodiments disclosed herein provides a method for producing an oxide composite with nearly fully dense matrix and with all fibers surrounded by a monazite- or xenotime-based material that prevents embrittlement at temperatures at least as high as 1200° C. Oxide composites are described that contain a plurality of fibers, a matrix containing at least one or more oxide materials, and at least one monazite-based material, xenotime-based material or combination thereof, wherein the monazite-based or xenotime-based material is formed from the aqueous precursor solutions disclosed herein. Contemplated methods of production include: a) providing a composite comprising oxide-reinforcing fibers and a porous matrix of oxide materials, and b) infiltrating the porosity in the matrix with a solution that contains precursors for at least one monazite-based material, at least one xenotime-based material or a combination thereof; and c) heat treating the composite to convert the precursors to monazite, xenotime, or combinations thereof.

Coatings for dissipating vibration-induced stresses in components and components provided therewith

A coating material suitable for use in high temperature environments and capable of providing a damping effect to a component subjected to vibration-induced stresses. The coating material defines a damping coating layer of a coating system that lies on and contacts a substrate of a component and defines an outermost surface of the component. The coating system includes at least a second coating layer contacted by the damping coating layer. The damping coating layer contains a ferroelastic ceramic composition having a tetragonality ratio, c/a, of greater than 1 to 1.02, where “c” is a c axis of a unit cell of the ferroelastic ceramic composition and “a” is either of two orthogonal axes, a and b, of the ferroelastic ceramic composition.

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.

COATING COMPOSITION FOR INHIBITING BUILD-UP OF CARBONACEOUS MATERIAL AND APPARATUS COMPRISING THE COATING AND METHOD

A composition useful in methods and apparatuses for inhibiting the build-up of byproduct carbonaceous material includes a perovskite material or a precursor therefor; and a yttrium doped ceria or a precursor therefor. 1. A composition comprising:a perovskite material or a precursor therefor; anda yttrium doped ceria or a precursor therefor.2. The composition of claim 1 , wherein the perovskite material is of formula ABO claim 1 , wherein0.9 Подробнее

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 ...

Scintillation crystal, a radiation detection system including the scintillation crystal, and a method of using the radiation detection system

A scintillation crystal can include Ln (1-y) RE y X 3 , wherein Ln represents a rare earth element, RE represents a different rare earth element, y has a value in a range of 0 to 1, and X represents a halogen. In an embodiment, RE is Ce, and the scintillation crystal is doped with Sr, Ba, or a mixture thereof at a concentration of at least approximately 0.0002 wt. %. In another embodiment, the scintillation crystal can have unexpectedly improved linearity and unexpectedly improved energy resolution properties. In a further embodiment, a radiation detection system can include the scintillation crystal, a photosensor, and an electronics device. Such a radiation detection system can be useful in a variety of radiation imaging applications.

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 ...

Sintering material, and powder for manufacturing sintering material

The present invention is a sintering material including a granule, the sintering material having an apparent tap density of 1.0 to 2.5 g/cm 3 , a 50% cumulative volume particle diameter (D 50N ) of 10 to 100 μm as measured before ultrasonication by laser diffraction/scattering particle size distribution analysis, a 50% cumulative volume particle diameter (D 50D ) of 0.1 to 1.5 μm as measured after ultrasonication at 300 W for 15 minutes by laser diffraction/scattering particle size distribution analysis, and an X-ray diffraction pattern in which the maximum peak observed in the 20 angle range of from 20° to 40° is assigned to a rare earth oxyfluoride of the form LnOF when analyzed by X-ray diffractometry using Cu—Kα or Cu—Kα 1 rays.

STRONTIUM MAGNESIUM MOLYBDENUM OXIDE MATERIAL HAVING DOUBLE PEROVSKITE STRUCTURE AND METHOD FOR PREPARING THE SAME

The present invention relates to a strontium magnesium molybdenum oxide material having perovskite structure and the method for preparing the same. Citric acid is adopted as the chelating agent. By using sol-gel pyrolysis and replacing a portion of strontium in SrMgMoOby cerium and a portion of magnesium by copper, a material with a chemical formula of SrCeMgCuMoOis produced, where 0≦x<2, 0 Подробнее

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 ...

PLASMA RESISTANT SEMICONDUCTOR PROCESSING CHAMBER COMPONENTS

Described herein are components of a semiconductor processing apparatus, where at least one surface of the component is resistant to a halogen-containing reactive plasma. The component includes a solid structure having a composition containing crystal grains of yttrium oxide, yttrium fluoride or yttrium oxyfluoride and at least one additional compound selected from an oxide, fluoride, or oxyfluoride of neodymium, cerium, samarium, erbium, aluminum, scandium, lanthanum, hafnium, niobium, zirconium, ytterbium, hafnium, and combinations thereof. 1. A component of a semiconductor processing apparatus , wherein a surface of the component is resistant to a halogen-comprising reactive plasma , the component comprising: crystal grains selected from a group consisting of yttrium oxide, yttrium fluoride and yttrium oxyfluoride, and', 'at least one additional compound selected from a group consisting of an oxide, fluoride, or oxyfluoride of neodymium, cerium, samarium, erbium, aluminum, scandium, lanthanum, hafnium, niobium, zirconium, ytterbium and combinations of an oxide, fluoride or oxyfluoride of at least one of these elements., 'a solid structure having an overall uniform composition, wherein the composition comprises2. The component of claim 1 , wherein the composition further comprises an amorphous phase comprising yttrium and fluorine.3. The component of claim 1 , wherein the composition comprises a yttrium aluminum oxyfluoride (Y—Al—O—F) amorphous phase.4. The component of claim 1 , wherein the composition comprises a yttrium oxide.5. The component of claim 1 , wherein in the composition comprises a yttrium fluoride.6. The component of claim 1 , wherein the composition comprises a yttrium oxyfluoride.7. The component of claim 1 , wherein the at least one additional compound comprises aluminum oxide claim 1 , aluminum fluoride or aluminum oxyfluoride.8. The component of claim 1 , wherein the at least one additional compound comprises zirconium oxide claim 1 , ...

GARNET MATERIALS FOR LI SECONDARY BATTERIES AND METHODS OF MAKING AND USING GARNET MATERIALS

Set forth herein are garnet material compositions, e.g., lithium-stuffed garnets and lithium-stuffed garnets doped with alumina, which are suitable for use as electrolytes and catholytes in solid state battery applications. Also set forth herein are lithium-stuffed garnet thin films having fine grains therein. Disclosed herein are novel and inventive methods of making and using lithium-stuffed garnets as catholytes, electrolytes and/or anolytes for all solid state lithium rechargeable batteries. Also disclosed herein are novel electrochemical devices which incorporate these garnet catholytes, electrolytes and/or anolytes. Also set forth herein are methods for preparing novel structures, including dense thin (<50 um) free standing membranes of an ionically conducting material for use as a catholyte, electrolyte, and, or, anolyte, in an electrochemical device, a battery component (positive or negative electrode materials), or a complete solid state electrochemical energy storage device. Also, the methods set forth herein disclose novel sintering techniques, e.g., for heating and/or field assisted (FAST) sintering, for solid state energy storage devices and the components thereof. 1. A composition comprising a lithium stuffed garnet and AlO , wherein the lithium-stuffed garnet is characterized by the empirical formula{'sub': A', 'B', 'C', 'D', 'E', 'F, 'LiLaM′M″ZrO, wherein 4 Подробнее

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 ...

METHOD AND REACTOR FOR CRACKING HYDROCARBON

A method for cracking hydrocarbon, comprises: providing steam and hydrocarbon; and feeding steam and hydrocarbon into a reactor accessible to hydrocarbon and comprising a perovskite material of formula ABCDO, wherein 0 Подробнее

Rare earth aluminate sintered compact and method for producing rare earth aluminate sintered compact

A rare earth aluminate sintered compact including rare earth aluminate phosphor crystalline phases and voids, wherein an absolute maximum length of 90% or more by number of rare earth aluminate phosphor crystalline phases is in a range from 0.4 μm to 1.3 μm, and an absolute maximum length of 90% or more by number of voids is in a range from 0.1 μm to 1.2 μm.

CERAMIC MATERIAL, LAYER AND LAYER SYSTEM

A ceramic material which contains yttrium oxide as stabilizers and at least one of the materials erbium oxide or ytterbium oxide provides a phase having sintering stability for a ceramic material for ceramic layers and a ceramic layer system which maintain the mechanical and thermal properties for a long time even when used at high temperatures. 1. A ceramic material based on{'sub': 2', '2', '3, 'zirconium oxide (ZrO) with yttrium oxide (YO) and'} [{'sub': 2', '3, 'erbium oxide (ErO) and'}, {'sub': 2', '3, 'ytterbium oxide (YbO) and'}, {'sub': 2', '2, 'optionally with at least one further oxide, in particular with at least two further oxides, selected from the group consisting of: hafnium oxide (HfO), cerium oxide (CeO), calcium oxide (CaO) and/or magnesium oxide (MgO) present in a proportion of in particular at least 0.1 mol %, in particular at least 0.5 mol % and in particular at most 5 mol %, in particular in that the ceramic material consists thereof.'}], 'at least one further oxide selected from the group consisting of2. The ceramic material as claimed in claim 1 ,{'sub': 2', '3', '2', '3', '2', '3', '2', '2, 'in which yttrium oxide (YO), erbium oxide (ErO) and ytterbium oxide (YbO) are used as oxides, optionally with at least one further oxide, in particular with at least two further oxides, selected from the group consisting of: hafnium oxide (HfO), cerium oxide (CeO), calcium oxide (CaO) and/or magnesium oxide (MgO), in particular only these.'}3. The ceramic material as claimed in claim 1 ,{'sub': 2', '3', '2', '3', '2', '2, 'in which yttrium oxide (YO) and erbium oxide (ErO) are used as oxides, optionally with at least one further oxide, in particular with at least two further oxides, selected from the group consisting of: hafnium oxide (HfO), cerium oxide (CeO), calcium oxide (CaO) and/or magnesium oxide (MgO), in particular only these.'}4. The ceramic material as claimed in claim 1 ,{'sub': 2', '3', '2', '3', '2', '2, 'in which yttrium oxide (YO) and ...

Polycrystalline dielectric thin film and capacitor element

A polycrystalline dielectric thin film and capacitor element has a small dielectric loss tan δ. The polycrystalline dielectric thin film, in which the main composition is a perovskite oxynitride. The perovskite oxynitride is expressed by the compositional formula AaBbOoNn (a+b+o+n=5), where a/b>1 and n≥0.7.

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.

WAVELENGTH CONVERSION MEMBER AND PRODUCTION METHOD THEREOF

A method for producing a wavelength conversion member includes disposing a phosphor ceramic layer on a substrate; removing a portion of the phosphor ceramic layer so that a plurality of phosphor ceramic elements are disposed in a direction perpendicular to the thickness direction of the substrate in spaced-apart relation; forming a cover layer containing an inorganic substance on the substrate so as to cover the surface of the phosphor ceramic element; and cutting the cover layer and the substrate in the thickness direction so as to include at least one of the phosphor ceramic elements. 1. A method for producing a wavelength conversion member , the method comprising the steps of:disposing a phosphor ceramic layer on a substrate,removing a portion of the phosphor ceramic layer so that a plurality of phosphor ceramic elements are disposed in a direction perpendicular to the thickness direction of the substrate in spaced-apart relation,forming a cover layer containing an inorganic substance on the substrate so as to cover the surface of the phosphor ceramic element, andcutting the cover layer and the substrate in the thickness direction so as to include at least one of the phosphor ceramic elements.2. The method for producing a wavelength conversion member according to claim 1 , wherein the forming step includes a step of applying claim 1 , on the substrate claim 1 , and curinga ceramic ink, ora curable resin composition containing a curable resin and at least one inorganic particle of inorganic oxide particles and metal particles.3. The method for producing a wavelength conversion member according to claim 1 , wherein the removing step includes a step of scraping off a portion of the phosphor ceramic layer using a blade.4. The method for producing a wavelength conversion member according to claim 1 , wherein the substrate is an easy-release sheet.5. A wavelength conversion member produced by the method according to . The present invention relates to a wavelength ...

Composite Ceramic Material Comprising Zirconia

The invention relates to a composite ceramic material which comprises: 1. Process for preparing a ceramic powder composition comprising zirconia containing CeOas a stabilizer , and an aluminate , which process comprises:(i) providing an aqueous solution containing salts of zirconium, cerium, aluminum and at least one further metal;(ii) adding a base to obtain a precipitate; and(iii) drying and/or calcining the precipitate.2. Process for the preparation of a composite ceramic material comprising a first phase based on zirconia containing CeOas a stabilizer , and a second phase based on an aluminate , which process comprises:{'sub': '2', '(i) providing a ceramic powder composition comprising zirconia containing CeOas a stabilizer, and an aluminate;'}(ii) optionally forming a ceramic body; and(iii) sintering the ceramic powder composition or the ceramic body.3. Process for the preparation of a composite ceramic material comprising a first phase based on zirconia containing CeOas a stabilizer , and a second phase based on an aluminate , which process comprises:{'sub': '2', '(i) providing a first slurry comprising zirconia containing CeOas stabilizer, a second slurry comprising an aluminate and optionally a third slurry comprising an aluminate which is different from the aluminate of the second slurry;'}(ii) mixing the first slurry with the second and optionally third slurry to obtain a mixed slurry;(iii) forming a ceramic body; and(iv) sintering the ceramic body.4. Process according to claim 2 , wherein sintering is performed at a temperature of about 1000 to about 1600° C. claim 2 , for a time of about 15 minutes to about 72 hours.5. Process according to claim 2 , wherein sintering is performed at a temperature of about 1100 to about 1550° C. claim 2 , for a time of about 30 minutes to about 24 hours.6. Process according to claim 2 , wherein sintering is performed at a temperature of about 1400 to about 1500° C. claim 2 , for a time of about 2 to 10 h.7. Process ...

Fluorescent member and light-emitting module

A fluorescent member includes: a wavelength converter including an incidence part on which a light of a light source is incident and an output part from which a converted light subjected to wavelength conversion as a result of excitation by an incident light is output; and a reflecting part provided in at least a portion of a surface of the wavelength converter. The wavelength converter is comprised of a material whereby a degree of scattering of the light of the light source incident via the incidence part and traveling toward the output part is smaller than in the case of a polycrystalline material.

MANUFACTURING METHOD OF MULTILAYER SHELL-CORE COMPOSITE STRUCTURAL COMPONENT

A manufacturing method of a multilayer shell-core composite structural component comprises the following procedures: (1) respectively preparing feeding material for injection forming of a core layer, a buffer layer and a shell layer, wherein the powders of feeding material of the core layer and the shell layer are selected from one or more of metallic powder, ceramic powder or toughened ceramic powder, and are different from each other, and the powder of feeding material of the buffer layer is gradient composite material powder; (2) layer by layer producing the blank of multilayer shell-core composite structural component by powder injection molding; (3) degreasing the blank; and (4) sintering the blank to obtain the multilayer shell-core composite structural component. The multilayer shell-core composite structural component has the advantages of high surface hardness, abrasion resistance, uniform thickness of the shell layer, stable and persistent performance. 1. A method for manufacturing a ball valve body having a multilayer shell-core composite structure , comprising:preparing feedstocks of a shell layer, at least one transition layer and a liner layer respectively, each of the feedstocks being formed by mixing a main powder of one of the three layers, a binder and an additive comprising a surface active agent and a plasticizer, wherein the main powder of the at least one transition layer comprises at least one mixed powder formed by mixing the main powder of the shell layer with the main powder of the liner layer at a ratio;performing a powder injection molding with the feedstocks, to obtain a green body of the ball valve body comprising the shell layer, the at least one transition layer and the liner layer;performing debinding on the green body of the ball valve body; andsintering the green body of the ball valve body after being debound, to obtain the ball valve body;wherein the main powder of the liner layer is made of a powdered toughened ceramic material, ...

WAVELENGTH CONVERSION MEMBER AND PRODUCTION METHOD THEREOF

A method for producing a wavelength conversion member includes preparing an element-disposed substrate including a substrate, a plurality of phosphor ceramic elements disposed on the substrate in spaced-apart relation in a direction perpendicular to the thickness direction of the substrate; embedding the plurality of phosphor ceramic elements in a curable layer containing the inorganic substance; producing a cover layer by curing the curable layer; and cutting the cover layer and the substrate in the thickness direction so as to include at least one of the phosphor ceramic elements. 1. A method for producing a wavelength conversion member , the method comprising the steps of:preparing an element-disposed substrate including a substrate, a plurality of phosphor ceramic elements disposed on the substrate in spaced-apart relation in a direction perpendicular to the thickness direction of the substrate,embedding the plurality of phosphor ceramic elements in a curable layer containing the inorganic substance,producing a cover layer by curing the curable layer, andcutting the cover layer and the substrate in the thickness direction so as to include at least one of the phosphor ceramic elements.2. The method for producing a wavelength conversion member according to claim 1 ,wherein the curable layer is formed froma ceramic ink, ora curable resin composition containing a curable resin and at least one inorganic particle of inorganic oxide particles and metal particles.3. The method for producing a wavelength conversion member according to claim 1 , wherein the substrate is an easy-release sheet.4. A wavelength conversion member produced by the method according to . The present invention relates to a wavelength conversion member and a production method thereof; in particular, the present invention relates to a method for producing a wavelength conversion member, and a wavelength conversion member produced by the method.A light-emitting diode device generally includes an LED ...

PROTON CONDUCTOR, SOLID ELECTROLYTE LAYER FOR FUEL CELL, CELL STRUCTURE, AND FUEL CELL INCLUDING THE SAME

A solid electrolyte layer contains a proton conductor having a perovskite structure, the proton conductor being represented by formula (1): BaZrCeMO(where element M is at least one selected from the group consisting of Y, Yb, Er, Ho, Tm, Gd, and Sc, 0.85≦x<0.98, 0.70≦y+z<1.00, a ratio of y/z is 0.5/0.5 to 1/0, and δ is an oxygen vacancy concentration). 2. The solid electrolyte layer for a fuel cell according to claim 1 , wherein 0.85≦x≦0.96.3. The solid electrolyte layer for a fuel cell according to claim 1 , wherein 0.75≦y+z≦0.90.4. The solid electrolyte layer for a fuel cell according to claim 1 , wherein the element M is at least one selected from the group consisting of Y and Yb.5. The solid electrolyte layer for a fuel cell according to claim 1 ,wherein letting a thickness of the solid electrolyte layer be T, letting a ratio of Ba at a position 0.25T from one surface of the solid electrolyte layer be x1, and letting a ratio of Ba at a position 0.25T from the other surface of the solid electrolyte layer be x2, x1>x2 is satisfied, andthe other surface is brought into contact with a cathode of a fuel cell.6. The solid electrolyte layer for a fuel cell according to claim 1 , wherein the ratio of y/z claim 1 , namely claim 1 , Zr/Ce claim 1 , is 0.5/0.5 to 0.9/0.1.8. A fuel cell comprising:{'claim-ref': {'@idref': 'CLM-00007', 'claim 7'}, 'the cell structure according to ;'}an oxidant channel to supply an oxidant to the cathode; anda fuel channel to supply a fuel to the anode. The present invention relates to a proton conductor, and in particular, to an improvement in a solid electrolyte layer for a fuel cell.Fuel cells include a cathode, an anode, a cell structure including a solid-electrolyte layer arranged therebetween, an oxidant channel to supply an oxidant to the cathode, and a fuel channel to supply a fuel to the anode. Perovskite oxides, such as BaCeYO(BCY) and BaZrYO(BZY), having proton conductivity are highly conductive in an intermediate temperature range ...

PHOSPHOR AND LIGHT-EMITTING EQUIPMENT USING PHOSPHOR

Phosphors include a CaAlSiNfamily crystal phase, wherein the CaAlSiNfamily crystal phase comprises at least one element selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb. 1. Light-emitting equipment , comprising at least one light source , the light source comprising at least one light-emitting source and a phosphor , wherein:the light-emitting source emits a light having a wavelength of 330 to 500 nm; andthe phosphor comprises an inorganic compound which is a composition containing at least M Element, A Element, D Element, E Element, and X Element;the M Element is one or two or more elements selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb;the A Element is one or two or more elements selected from the group consisting of divalent metal elements other than M Element;the D Element is one or two or more elements selected from the group consisting of tetravalent metal elements;the E Element is one or two or more elements selected from the group consisting of trivalent metal elements;the X Element is one or two or more elements selected from the group consisting of O, N, and F;the M Element comprises at least Eu;the A Element comprises at least Ca or at least Ca and Sr;the D Element comprises at least Si;the E Element comprises at least Al;the X Element comprises at least N; and {'br': None, 'sub': a', 'b', 'c', 'd', 'e, 'MADEX'}, 'the inorganic compound is a composition given bywhere:a+b=1;0.00001≤a≤0.1;0.5≤c≤1.8;0.5≤d≤1.8;0.8×(2/3+4/3×c+d)≤e; ande≤1.2×(2/3+4/3×c+d).2. The light-emitting equipment according to claim 1 , wherein the light-emitting source emits a light having a wavelength of 420 to 500 nm.3. The light-emitting equipment according to claim 2 , wherein the phosphor further comprises at least one of:a phosphor having an emission peak at a wavelength of 500 to 570 nm; anda phosphor having an emission peak at a wavelength of 550 to 600 nm.4. The light-emitting equipment according ...

Shape Memory Ceramic Particles and Structures Formed Thereof

There is provided a shape memory ceramic structure including an aggregate population of crystalline particles. Each crystalline particle in the population, of crystalline particles comprises a shape memory ceramic particle material. Each crystalline particle in the population of crystalline particles has a crystalline particle extent that is between about 0.5 microns and about fifty microns. At least a portion of the population of crystalline particles has a crystalline structure that is either oligocrystalline or monocrystalline. 1. A shape memory ceramic structure comprising:an aggregate population of crystalline particles;each crystalline particle in the population of crystalline particles comprising as shape memory ceramic particle material and having a crystalline particle extent between about 0.5 microns and about fifty microns; andat least a portion of the population of crystalline particles having a crystalline structure selected from the group consisting of oligocrystalline and monocrystalline.2. The shape memory ceramic structure of wherein the shape memory ceramic material comprises an element selected from the group consisting of zirconium claim 1 , cerium claim 1 , and oxygen.3. The shape memory ceramic structure of wherein the shape memory ceramic material comprises ZrO.4. The shape memory ceramic structure of wherein the shape memory ceramic material comprises ZROdoped with at least one dopant selected from the group consisting of Ce claim 1 , Y claim 1 , Ca claim 1 , Mg claim 1 , Ti claim 1 , Ge claim 1 , La claim 1 , Pb claim 1 , Nb claim 1 , Ta claim 1 , Mn.56. The shape memory ceramic structure of wherein the shape memory ceramic material comprises a shape memory ceramic material selected from the group consisting a AlSiO claim 1 , CaSiO claim 1 , MgSiO claim 1 , MgSiO. cm . The shape memory ceramic structure of wherein each crystalline particle in the population of crystalline particles has a particle geometry selected from the group consisting ...

GLASS FORMING APPARATUS AND METHODS OF FORMING A GLASS RIBBON

A glass forming apparatus comprises a forming device configured to form a glass ribbon from a quantity of molten glass. The glass forming apparatus includes a refractory material comprising monazite (REPO). In another example, a method of forming a glass ribbon with a glass forming apparatus includes the step of supporting a quantity of molten glass with a refractory member comprising a refractory material comprising monazite (REPO). The method further includes the step of forming the glass ribbon from the quantity of molten glass. 1. A glass forming apparatus comprising a forming device configured to form a glass ribbon from a quantity of molten glass , wherein the glass forming apparatus comprises a refractory material comprising monazite (REPO4).2. The glass forming apparatus of claim 1 , wherein the forming device comprises the refractory material.3. The glass forming apparatus of claim 2 , wherein the refractory material comprises an outer layer of the forming device.4. The glass forming apparatus of claim 1 , further comprising a melting furnace configured to melt a quantity of material into the quantity of molten glass claim 1 , wherein a containment wall of the melting furnace comprises the refractory material.5. The glass forming apparatus of claim 4 , wherein the refractory material comprises an inner layer of the containment wall that at least partially defines a containment area of the melting furnace.6. The glass forming apparatus of claim 1 , wherein the refractory material comprises at least 50 volume percent of monazite (REPO4).7. The glass forming apparatus of claim 6 , wherein the refractory material comprises at least 75 volume percent of monazite (REPO4).8. The glass forming apparatus of claim 7 , wherein the refractory material comprises at least 90 volume percent of monazite (REPO4).9. The glass forming apparatus of claim 1 , wherein the refractory material further comprises zircon (ZrSiO4).10. The glass forming apparatus of claim 1 , wherein ...

Phosphor and light emitting device having the same

Disclosed are a phosphor and a light emitting device including the same. The light emitting device includes a light emitting chip, a phosphor layer on the light emitting chip, and a phosphor added into the phosphor layer to absorb a light emitted from the light emitting chip and emit a central wavelength having a first blue color. The phosphor has a composition formula of La x O y Si 6 Al 4 N 12 :Ce 3+ z , a range of the x is 2≦x≦8, and a range of the y is 3≦y≦12.

COATING FOR HOT-SHAPING CORE

The invention concerns a method for coating a core () for producing a turbomachine part () by isostatic compacting, for example a leading-edge shield of a blade, the coating method comprising the steps of:—S covering the core () by means of a first solution comprising a first refractory component configured to oppose the diffusion of species, the first component comprising a metal oxide,—S covering the core () by means of a second solution comprising a second component designed to bind the first component in such a way as to form a homogeneous layer, the second component comprising a mineral binder;—S applying a heat treatment to the covered core () in such a way as to dry the solution and solidify the coating. 112-. (canceled)13. A process for coating a core for a manufacture of a turbomachine part by isostatic pressing , for example a leading-edge shield of a blade , the coating process comprising the steps of:{'b': '1', 'claim-text': 'the first component comprising a metal oxide;', 'S: Coating the core with a first solution comprising a first refractory component configured to oppose species diffusion,'}{'b': '2', 'claim-text': 'the second component comprising an inorganic binder; and', 'S: Coating the core with a second solution comprising a second component configured to bind the first component so as to form a homogeneous layer,'}{'b': '3', 'S: Applying a heat treatment to the coated core so as to dry the solution and solidify the coating.'}1413. The coating process as claimed in claim 13 , wherein steps S to S are repeated at least once.15. The coating process as claimed in claim 13 , whereinthe first component comprises an oxide of a transition metal, andthe second component comprises a colloid of a lanthanide.16. The coating process as claimed in claim 13 , whereinthe first solution is aqueous, andthe first component comprises an yttrium oxide filler in powder form.17. The coating process as claimed in claim 13 , wherein the second component comprises a ...

POROUS CERAMIC STRUCTURE

A porous ceramic structure includes a porous honeycomb structure composed primarily of cordierite, and Ce- and Zr-containing particles fixedly attached to the honeycomb structure. The Ce- and Zr-containing particles contain Ce and Zr. The Ce- and Zr-containing particles have a fixedly attached portion located inside the honeycomb structure and a protrusion contiguous with the fixedly attached portion and protruding from the honeycomb structure.

Method for making porous acicular mullite bodies

Acicular mullite bodies are made in two-step firing process in which a green body is converted first to a fluorotopaz and then to acicular mullite. The bodies are contained within an enclosed region of the furnace. A flow of process gas is provided through the enclosed region during the fluorotopaz-forming step. The process gas is introduced into the enclosed region through multiple openings on at least one side of the enclosed region, and withdrawn through multiple openings on another side of the enclosed region. During the acicular mullite-forming step, a flow of purge gas is maintained in the exterior portion of the furnace. This purge gas may be removed by flowing it into the enclosed region of the furnace and out of the furnace from the enclosed region without re-entering the exterior portion for the furnace.

Composite Articles Comprising Metal Carbide Fibers

A method of producing, from a continuous or discontinuous (e.g., chopped) carbon fiber, partially to fully converted metal carbide fibers. The method comprises reacting a carbon fiber material with at least one of a metal or metal oxide source material at a temperature greater than a melting temperature of the metal or metal oxide source material (e.g., where practical, at a temperature greater than the vaporization temperature of the metal or metal oxide source material). Additional methods, various forms of carbon fiber, metal carbide fibers, and articles including the metal carbide fibers are also disclosed. 1. An article comprising:metal carbide fibers dispersed in a matrix, the metal carbide fibers comprising metal carbide in fiber form, the metal carbide comprising at least one of aluminum carbide, beryllium carbide, calcium carbide, cerium carbide, chromium carbide, dysprosium carbide, erbium carbide, europium carbide, gadolinium carbide, hafnium carbide, holmium carbide, iron carbide, lanthanum carbide, lithium carbide, magnesium carbide, manganese carbide, molybdenum carbide, niobium carbide, neodymium carbide, praseodymium carbide, samarium carbide, scandium carbide, tantalum carbide, terbium carbide, thulium carbide, thorium carbide, titanium carbide, tungsten carbide, uranium carbide, vanadium carbide, ytterbium carbide, yttrium carbide, or zirconium carbide.2. The article of claim 1 , wherein the matrix comprises at least one of a ceramic material claim 1 , a refractory carbide material claim 1 , a metal material claim 1 , a polymer material claim 1 , or combinations thereof.3. The article of claim 1 , wherein the article is one of claim 1 , or a portion of an article selected from the group comprising a magnet claim 1 , laser claim 1 , maser claim 1 , recording device claim 1 , electrical motor claim 1 , chemical reducing agent claim 1 , ceramic capacitor claim 1 , battery electrode claim 1 , hydrogen storage device claim 1 , mercury vapor lamp claim 1 ...

Composition for use as an electrolyte in a protonic ceramic fuel cell and a fuel cell thereof

The present invention relates to a solid oxide fuel cell especially protonic ceramic fuel cell which can operate at intermediate temperature and fuel cell thereof. The composition comprising a formula BaCe 0.7 Zr 0.25-x Y x Zn 0.05 O 3-δ or BaCe 0.7 Zr 0.1 Y 0.2-x Pr x O 3-δ , wherein x=0.05, 0.1, 0.15, 0.2 or 0.25 to vary Zr and Y percentage at the B-site, and Ba=100%, Ce=70%; and Zn=5%.

Manufacturing method of femoral condyle prosthesis

A manufacturing method of a femoral condyle prosthesis having a multilayer shell-core composite structure comprises the following procedures: (1) respectively preparing feeding material for injection forming of a core layer, a buffer layer and a shell layer, wherein the powders of feeding material of the core layer and the shell layer are selected from one or more of metallic powder, ceramic powder or toughening ceramic powder, and are different from each other, and the powder of feeding material of the buffer layer is gradient composite material powder; (2) layer by layer producing the blank of multilayer shell-core composite structural component by powder injection molding; (3) degreasing the blank; (4) sintering the blank to obtain the multilayer shell-core composite structural component. The femoral condyle prosthesis has the advantages of high surface hardness, abrasion resistance, uniform thickness of the shell layer, stable and persistent performance.

Porous ceramic structure

A honeycomb structure that is the porous ceramic structure is made of a ceramic material and has pores in a structure interior, the honeycomb structure has cerium dioxide, at least a part of the cerium dioxide is incorporated in the structure interior, at least a part of the incorporated cerium dioxide is exposed on pore surfaces of the pores, and at least a part of the exposed cerium dioxide is constituted as an oxide-containing cerium dioxide including iron oxide on the surface and/or in the part.

PROCESS FOR PRODUCING ZIRCONIA-BASED MULTI-PHASIC CERAMIC COMPOSITES

A process is described, for producing zirconia-based multi-phasic ceramic composite materials, comprising the steps of: providing at least one ceramic suspension by dispersing at least one ceramic zirconia powder in at least one aqueous medium to obtain at least one matrix for such composite material; providing at least one aqueous solution containing one or more inorganic precursors and adding such aqueous solution to such ceramic suspension to surface modify such ceramic zirconia powder and obtain at least one additived suspension; quickly drying such additived suspension to obtain at least one additived powder; heat treating such additived powder to obtain at least one zirconia powder coated on its surface by second phases; and forming such zirconia powder coated on its surface by second phases. 1. A process for producing a zirconia-based multi-phasic ceramic composite material , the process comprising the steps of:a) providing at least one ceramic suspension by dispersing at least one ceramic zirconia powder in at least one aqueous medium to obtain at least one ceramic suspension;b) providing at least one aqueous solution containing one or more inorganic precursors and adding the aqueous solution to the ceramic suspension to surface modify the ceramic zirconia powder, thereby forming a surface modified ceramic zirconia powder;c) drying the surface modified ceramic zirconia powder to obtain an additive powder, through nebulization of the surface modified ceramic zirconia powder to an aerosol of micro-drops at a temperature between 80° C. and 200° C.; andd) heat treating the additive powder to obtain at least one zirconia powder coated on its surface by second phases;thereby producing the zirconia-based multi-phasic ceramic composite material.2. The process according to claim 1 , wherein the ceramic zirconia powder is stabilized by an oxide claim 1 , the oxide comprising cerium oxide or yttrium oxide.3. The process according to claim 2 , wherein the molar ratio of ...

ZIRCONIA ARTICLE WITH HIGH ALUMINA CONTENT, PROCESS OF PRODUCTION AND USE THEREOF

The invention relates to a porous zirconia article in particular for use in the dental or orthodontic field, the porous zirconia article comprising ZrO: 80 to 87 wt. %,YO: 3 to 5 wt. %, AIO: 10 to 14 wt. %, wt. % with respect to the weight of the porous zirconia article, the porous zirconia article being characterized by a BET surface from 15 to 100 m/g. The invention also relates to a sintered zirconia article in particular for use in the dental or orthodontic field, the sintered zirconia article comprising ZrO: 80 to 87 wt 5, YO: 3 to 5 wt. %), AIO: 10 to 14 wt. %, wt. %) with respect to the weight of the porous zirconia article, the sintered zirconia article being characterized by a corundum crystal phase content of 7 to 12 wt. %>and a flexural strength of at least 2,000 MPa. 2. The porous zirconia article of claim 1 , further being characterized by one or more of the following parameters:{'sub': '2', 'showing a Nadsorption and/or desorption isotherm with a hysteresis loop;'}{'sub': '2', 'showing a Nadsorption and desorption of isotherm type IV according to IUPAC classification and a hysteresis loop;'}{'sub': '2', 'showing a Nadsorption and desorption isotherm of type IV with a hysteresis loop of type H1 according to IUPAC classification; and'}{'sub': '2', 'showing a Nadsorption and desorption isotherm of type IV with a hysteresis loop of type H1 according to IUPAC classification in a p/p0 range of 0.70 to 0.99.'}3. The porous zirconia article of claim 1 , further comprising one or more of the following components:CaO in an amount less than or equal to 1 wt. %;MgO in an amount less than or equal to 1 wt. %;{'sub': '2', 'CeOin an amount less than or equal to 1 wt. %; and'}{'sub': 2', '3, 'LaOin an amount less than or equal to 1 wt. %;'}wherein wt. % is with respect to the weight of the porous zirconia article.4. A sintered zirconia article comprising:{'sub': '2', 'ZrO: 80 to 87 wt. %,'}{'sub': 2', '3, 'YO: 3 to 5 wt. %, and'}{'sub': 2', '3, 'AlO: 10 to 14 wt. %;'} ...

Methods of preparing novel enhanced high q material compositions

A framework for developing high quality factor (Q) material for electronic applications in the radio frequency range is provided. In one implementation, ceramic materials having a tungsten bronze crystal structure is modified by substituting one or more elements at one or more lattice sites on the crystal structure. The substitute elements are selected based on the ionic radius and other factors. In other implementations, the modified ceramic material is prepared in combination with compositions such as rutile or a perovskite to form a orthorhombic hybrid of perosvkite and tetragonal tungsten bronze.

LAMINATED CERAMIC CAPACITOR

A ceramic capacitor having dielectric ceramic layers that include Ba, Re (Re is at least one of La, Ce, Pr, Nd, and Sm), Ti, Zr, M (M is at least one of Mg, Al, Mn, and V), Si, and optionally Sr, where at least some of the Ba, Re, Ti, and Zr and optionally Sr are in the form of a perovskite compound. Respective amounts, expressed as parts by mol, of the elements of the dielectric ceramic layers satisfy, with respect to a total of 100 of the Ti amount and the Zr amount, 0≦a≦20.0 where a is the Sr amount; 0.5≦b≦10.0 where b is the Re amount; 46≦c≦90 where c is the Zr amount; 0.5≦d≦10.0 where d is the M amount; 0.5≦e≦5.0 where e is the Si amount; and 0.990≦m≦1.050 where m is a ratio of a total of the Ba amount, the Sr amount, and the Re amount, to the total of the Ti amount and the Zr amount. 2. The laminated ceramic capacitor according to claim 1 , wherein the dielectric ceramic layers have a dielectric constant of 70 or more.3. The laminated ceramic capacitor according to claim 1 , wherein0≦a≦20.0;0.5≦b≦5.0;46≦c≦80;0.5≦d≦5.0;1.0≦e≦3.0; and0.990≦m≦1.050.4. The laminated ceramic capacitor according to claim 3 , wherein the dielectric ceramic layers have a dielectric constant of 100 or more. (from [0086])5. The laminated ceramic capacitor according to claim 1 , wherein0≦a≦20.0;1.0≦b≦5.0;60≦c≦80;1.0≦d≦5.0;1.0≦e≦3.0; and1.010≦m≦1.040.6. The laminated ceramic capacitor according to claim 5 , wherein the dielectric ceramic layers have a dielectric constant of 100 or more.7. The laminated ceramic capacitor according to claim 1 , wherein at least some of the Ba claim 1 , Re claim 1 , Ti claim 1 , Zr and optionally Sr in said dielectric ceramic layers is in the form of a perovskite compound.8. The laminated ceramic capacitor according to claim 7 , wherein the dielectric ceramic layers have a dielectric constant of 70 or more.9. The laminated ceramic capacitor according to claim 7 , wherein0≦a≦20.0;0.5≦b≦5.0;46≦c≦80;0.5≦d≦5.0;1.0≦e≦3.0; and0.990≦m≦1.050.10. The laminated ...

GARNET MATERIALS FOR LI SECONDARY BATTERIES AND METHODS OF MAKING AND USING GARNET MATERIALS

Disclosed herein are garnet material compositions, e.g., lithium-stuffed garnets and lithium-stuffed garnets doped with alumina, which are suitable for use as electrolytes and catholytes in solid state battery applications. Also disclosed herein are lithium-stuffed garnet thin films having fine grains therein. Also disclosed herein are methods of making and using lithium-stuffed garnets as catholytes, electrolytes and/or anolytes for all solid state lithium rechargeable batteries. Also disclosed herein are electrochemical devices which incorporate these garnet catholytes, electrolytes and/or anolytes. Also disclosed herein are methods for preparing dense thin (<50 um) free standing membranes of an ionically conducting material for use as a catholyte, electrolyte, and, or, anolyte, in an electrochemical device, a battery component (positive or negative electrode materials), or a complete solid state electrochemical energy storage device. Also disclosed herein are sintering techniques, e.g., for heating and/or field assisted (FAST) sintering, for solid state energy storage devices and the components thereof. 21. (canceled)22. A sintered film comprising:a first layer comprising a sintered lithium-stuffed garnet; anda second layer interfacing the first layer, the second layer comprising a sintered metal;wherein the sintered film thickness is less than 200 μm and greater than 1 nm.23. The film of claim 22 , wherein the lithium-stuffed garnet comprises at least one member selected from the group consisting of LiLaM′M″ZrO claim 22 , LiLaM′M″TaO claim 22 , and LiLaM′M″NbO claim 22 , wherein 4 Подробнее

Cordierite aluminum magnesium titanate compositions and ceramic articles comprising same

Disclosed are ceramic bodies comprised of composite cordierite aluminum magnesium titanate ceramic compositions and methods for the manufacture of same.

SCINTILLATION CRYSTAL, A RADIATION DETECTION SYSTEM INCLUDING THE SCINTILLATION CRYSTAL, AND A METHOD OF USING THE RADIATION DETECTION SYSTEM

A scintillation crystal can include LnREX, wherein Ln represents a rare earth element, RE represents a different rare earth element, y has a value in a range of 0 to 1, and X represents a halogen. In an embodiment, RE is Ce, and the scintillation crystal is doped with Sr, Ba, or a mixture thereof at a concentration of at least approximately 0.0002 wt. %. In another embodiment, the scintillation crystal can have unexpectedly improved linearity and unexpectedly improved energy resolution properties. In a further embodiment, a radiation detection system can include the scintillation crystal, a photosensor, and an electronics device. Such a radiation detection system can be useful in a variety of radiation imaging applications. 1. A scintillation crystal , comprising:{'sub': 1-y', 'y', '3, 'claim-text': Ln represents a rare earth element selected from the group consisting of La, Gd, Y, Sc, Lu, and any mixture thereof;', 'RE represents a different rare earth element than Ln;', 'y has a value in a range of 0 to 1; and', 'X represents a halogen., 'a material including Ln()REX, wherein2. The scintillation crystal of claim 1 , wherein the material further contains Me and wherein Me represents Sr claim 1 , Br claim 1 , Ba claim 1 , Zn or any mixture thereof.3. The scintillation crystal of claim 1 , wherein RE is selected from the group consisting of Ce claim 1 , Eu claim 1 , Pr claim 1 , Tb claim 1 , Nd claim 1 , or any mixture thereof.4. The scintillation crystal of claim 1 , wherein the scintillation crystal has a property including:for a radiation energy range of 60 keV to 356 keV, the scintillation crystal has an average value for a departure from perfect linearity of no less than −0.35%.5. The scintillation crystal of claim 1 , wherein the scintillation crystal has a property including:for a radiation energy range of 2000 keV to 2600 keV, the scintillation crystal has an average value for a departure from perfect linearity of no greater than 0.07%;6. The scintillation ...

PREPARATION METHOD AND USE OF GREEN FLUORESCENT TRANSPARENT CERAMIC

A preparation method and use of a green fluorescent transparent ceramic are disclosed. The preparation method includes: weighing, according to a stoichiometric ratio, elements present in CaCeAScBSiCO, in forms of oxides, carbonates or nitrates as raw materials; mixing the raw materials, annealing, melting at a high temperature, cooling and annealing at a low temperature; putting the glass into a high-temperature furnace, holding, raising the temperature, and performing crystallization and densification sintering; finally cutting, reducing and surface-polishing, where A is at least one from the group consisting of Lu, Y, Gd, La and Na; B is at least one from the group consisting of Zr, Hf and Mg; C is at least one from the group consisting of Al and P; x, y, z and m satisfy 0.001≤x≤0.06, 0≤y≤0.06, 0≤z≤0.06 and 0≤m≤0.3, respectively. 1. A green fluorescent transparent ceramic , wherein the green fluorescent transparent ceramic is prepared according to a stoichiometric ratio of elements present in a chemical formula of CaCeAScBSiCO , wherein A is at least one selected from the group consisting of Lu , Y , Gd , La and Na; B is at least one selected from the group consisting of Zr , Hf and Mg; C is at least one selected from the group consisting of Al and P; x , y , z and m satisfy 0.001≤x≤0.06 , 0≤y≤0.06 , 0≤z≤0.06 and 0≤m≤0.3 , respectively.2. A preparation method of the green fluorescent transparent ceramic , comprising the following steps:{'sub': 3-x-y', 'x', 'y', '2-z', 'z', '3-m', 'm', '12, '(1) weighing, according to a stoichiometric ratio, elements present in a chemical formula of CaCeAScBSiCO, in forms of oxides, carbonates or nitrates as starting materials; mixing the starting materials evenly to obtain a mixture; annealing the mixture; fully melting the mixture at a first temperature; cooling the mixture to obtain a transparent glass; annealing the transparent glass at a second temperature of 700-950° C. for 1-10 h to remove an internal stress of the ...

NANOCRYSTALLINE CERAMIC OXIDE BEADS

Plurality of nanocrystalline percent by volume crystalline ceramic oxide beads, wherein the nanocrystalline ceramic oxide beads have an average crystallite size up to 250 nm, wherein each bead collectively comprises, on a theoretical oxides basis, at least one of AlO, SiO, TiO, or ZrOat least 40 weight percent, and at least 1 weight percent of at least one of a transition metal oxide or at least one BiOor CeO, based on the total weight of the nanocrystalline ceramic oxide beads, and are visibly dark and infrared transmissive. The beads are useful, for example, in pavement markings. 1. A plurality of nanocrystalline ceramic oxide beads , wherein the nanocrystalline ceramic oxide beads have an average crystallite size up to 250 nm , wherein each bead collectively comprises , on a theoretical oxides basis , at least 40 weight percent of at least one of AlO , SiO , TiO , or ZrO , and at least 1 weight percent of at least one of a transition metal oxide or at least one of BiOor CeO , based on the total weight of the nanocrystalline ceramic oxide beads , and are visibly dark and infrared transmissive.2. The plurality of nanocrystalline ceramic oxide beads of collectively comprising claim 1 , on a theoretical oxides basis claim 1 , at least 80 percent by weight SiOand ZrO claim 1 , based on the total weight of the nanocrystalline ceramic oxide beads.3. The plurality of nanocrystalline ceramic oxide beads of collectively comprising claim 1 , on a theoretical oxides basis claim 1 , at least 80 percent by weight AlO claim 1 , SiO claim 1 , and ZrO claim 1 , based on the total weight of the nanocrystalline ceramic oxide beads.4. The plurality of nanocrystalline ceramic oxide beads of collectively comprising claim 1 , on a theoretical oxides basis claim 1 , at least 70 percent weight AlO claim 1 , SiO claim 1 , TiO claim 1 , and ZrO claim 1 , based on the total weight of the nanocrystalline ceramic oxide beads.5. The plurality of nanocrystalline ceramic oxide beads of ...

Composite ceramic layered body and manufacturing method

Provided is a composite ceramic layered body, including: a substrate; and a composite ceramic that coats the substrate, the composite ceramic including a nitride phase and an oxide phase having an elastic modulus that differs from an elastic modulus of the nitride phase by 10% or more. The composite ceramic includes, among the nitride phase and the oxide phase, a first phase that occupies a largest area ratio, and a toughening phase that occupies an area ratio of 1% or more and has a largest difference in elastic modulus from an elastic modulus of the first phase. In a case in which the first phase is the nitride phase, the toughening phase is the oxide phase, and in a case in which the first phase is the oxide phase, the toughening phase is the nitride phase.

Ceramic sintered body and ceramic powder

A ceramic sintered body of the present disclosure contains zirconia as a main component, includes a plurality of sintered body crystals and a grain boundary part located between the plurality of sintered body crystals, contains at least CeO2, and has a content of Ce higher in the grain boundary than in a central region of the sintered body crystal.

GARNET MATERIALS FOR LI SECONDARY BATTERIES AND METHODS OF MAKING AND USING GARNET MATERIALS

Set forth herein are garnet material compositions, e.g., lithium-stuffed garnets and lithium-stuffed garnets doped with alumina, which are suitable for use as electrolytes and catholytes in solid state battery applications. Also set forth herein are lithium-stuffed garnet thin films having fine grains therein. Disclosed herein are novel and inventive methods of making and using lithium-stuffed garnets as catholytes, electrolytes and/or anolytes for all solid state lithium rechargeable batteries. Also disclosed herein are novel electrochemical devices which incorporate these garnet catholytes, electrolytes and/or anolytes. Also set forth herein are methods for preparing novel structures, including dense thin (<50 um) free standing membranes of an ionically conducting material for use as a catholyte, electrolyte, and, or, anolyte, in an electrochemical device, a battery component (positive or negative electrode materials), or a complete solid state electrochemical energy storage device. Also, the methods set forth herein disclose novel sintering techniques, e.g., for heating and/or field assisted (FAST) sintering, for solid state energy storage devices and the components thereof. 1. A composition comprising a lithium stuffed garnet and AlO , wherein the lithium-stuffed garnet is characterized by the empirical formula LiLaM′M″ZrO , wherein 4 Подробнее

Ce-DOPED PZT-BASED PIEZOELECTRIC FILM

A Ce-doped PZT-based piezoelectric film is provided which is formed of Ce-doped composite metal oxides represented by a general formula: PbCeZrTiO. x, y, and z in the general formula satisfy a relationship of 0.005≦x≦0.05, a relationship of 0.40≦y≦0.55, and a relationship of 0.95≦z≦1.15, respectively. It is preferable that the hysteresis of the polarization quantity of the Ce-doped PZT-based piezoelectric film be shifted from the center of the hysteresis to a negative side by 4 kV/cm or more. 1. A Ce-doped PZT-based piezoelectric film formed of Ce-doped composite metal oxides represented by a general formula: PbCeZrTiO ,wherein x, y, and z in the general formula satisfy a relationship of 0.005≦y≦0.05, a relationship of 0.40≦y≦0.55, and a relationship of 0.95≦z≦1.15, respectively.2. The Ce-doped PZT-based piezoelectric film according to claim 1 ,wherein the hysteresis of the polarization quantity is shifted from the center of the hysteresis to a negative side by 4 kV/cm or more.3. The Ce-doped PZT-based piezoelectric film according to claim 1 ,wherein a (100) orientation degree obtained by X-ray diffraction is equal to or greater than 80%.4. The Ce-doped PZT-based piezoelectric film according to claim 1 ,wherein a film thickness is from 1000 nm to 5000 nm. The present invention relates to a Ce-doped PZT-based piezoelectric film used in a piezoelectric element, an IPD, a pyroelectric element, a gyro sensor, a vibration power generation element, or an actuator.Priority is claimed on Japanese Patent Application No. 2014-065632, filed Mar. 27, 2014, the content of which is incorporated herein by reference.Patent Document 1 discloses a composition for forming a ferroelectric thin film for forming one kind of ferroelectric thin film selected from the group consisting of PLZT, PZT, and PT, which is a liquid composition for forming a thin film formed of a mixed composite metal oxide in which a composite metal oxide B containing Ce is mixed with a composite metal oxide A ...

Thermal Shock-Resistant Composite Materials

A composite material green body film includes a ceramic matrix including zirconium oxide, at least one secondary phase dispersed in the ceramic matrix, and an optional chemical stabilizer. The composite material green body film can be used to make a sensor. 1. A composite material green body film , comprising:a ceramic matrix comprising zirconium oxide, the ceramic matrix forming at most 99 percent by weight of the composite material green body film, 90 to 99% of a total amount of the zirconium oxide being in the tetragonal and cubic phase;{'sub': '4', 'at least one secondary phase dispersed in the ceramic matrix, the at least one secondary phase forming 1 to 30 percent by weight of the composite material green body film, the at least one secondary phase comprising ZrSiO; and'}{'sub': 2', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3, '0 to less than 12 mol % of a chemical stabilizer based on a content of the zirconium oxide, the chemical stabilizer comprising one or more selected from MgO, CaO, CeO, GdO, SmO, ErO, YO, YbO, and ScO, the tetragonal and cubic phase of the zirconium oxide being chemically stabilized and optionally mechanically stabilized when the composite material green body film is sintered and comprises the chemical stabilizer, and the tetragonal and cubic phase of the zirconium oxide being mechanically stabilized when the composite material green body film is sintered and does not comprise the chemical stabilizer,'}wherein the zirconium oxide has an average microstructure grain size of 0.5 to 2.0 μm, and a d50 microstructure grain size of the at least one secondary phase is less than or equal to a d50 microstructure grain size of the zirconium oxide, andwherein the composite material green body film has a thickness of 10 μm to 1 mm.2. The composite material green body film according to claim 1 , wherein the zirconium oxide has an average microstructure grain size of 0.5 to 1.5 μm.3. The composite material green body film according to ...

Apparatus and Method for Three-Dimensional Laminating and Coloring a Dental Ceramic Crown

An apparatus for three-dimensional laminating and coloring a dental ceramic crown includes a slurry layering module, a coloring module, a light curing module and a main controller. The main controller controls the slurry layering module to lay a slurry from a slurry tank to form a slurry layer, controls the coloring module to color the slurry layer with the colorant in a color tank to form a colorant layer according to a plurality of coloring parameter data, controls the light curing module to cure the slurry layer according to a plurality of laminated graphics. The apparatus may color each slurry layer, and the color can be easily changed as desired. The overall coloring effect of the dental ceramic crown is natural with good light transmittance, and the color is saturated without any blooming formed between the colored layers.

COMPOSITION FOR FORMING Ce-DOPED PZT-BASED PIEZOELECTRIC FILM

A composition for forming a Ce-doped PZT-based piezoelectric film contains: PZT-based precursors containing metal atoms configuring the composite metal oxides; a diol; and polyvinylpyrrolidone. The PZT-based precursors are contained so that a metal atom ratio (Pb:Ce:Zr:Ti) in the composition satisfies (1.00 to 1.28):(0.005 to 0.05):(0.40 to 0.55):(0.60 to 0.45) and the total of Zr and Ti in a metal atom ratio is 1. A concentration of the PZT-based precursor in 100 mass % of the composition is from 17 mass % to 35 mass % in terms of an oxide concentration, a rate of diol in 100 mass % of the composition is from 16 mass % to 56 mass %, and a molar ratio of polyvinylpyrrolidone to 1 mole of the PZT-based precursor is 0.01 moles to 0.25 moles in terms of monomers. 1. A composition for forming a PZT-based piezoelectric film formed of Ce-doped composite metal oxides , the composition comprising:PZT-based precursors containing metal atoms configuring the composite metal oxides;a diol; andpolyvinylpyrrolidone or polyethylene glycol,wherein the PZT-based precursors are contained so that a metal atom ratio (Pb:Ce:Zr:Ti) in the composition satisfies (1.00 to 1.28):(0.005 to 0.05):(0.40 to 0.55):(0.60 to 0.45) and the total of Zr and Ti in a metal atom ratio is 1 in the composition,a concentration of the PZT-based precursor in 100 mass % of the composition is from 17 mass % to 35 mass % in terms of an oxide concentration,a rate of diol in 100 mass % of the composition is from 16 mass % to 56 mass %, anda molar ratio of polyvinylpyrrolidone or polyethylene glycol to 1 mole of the PZT-based precursor is 0.01 moles to 0.25 moles in terms of monomers.2. The composition for forming a Ce-doped PZT-based piezoelectric film according to claim 1 , further comprising:linear monoalcohol having 6 to 12 carbon atoms of which a rate added in 100 mass % of the composition is from 0.6 mass % to 10 mass %. The present invention relates to a composition for forming a Ce-doped PZT-based ...

Porous material, honeycomb structure, and method of producing porous material

A porous material includes an aggregate, and a binding material that binds the aggregate together in a state where pores are formed. The porous material contains 0.1 to 10.0 mass % of an MgO component, 0.5 to 25.0 mass % of an Al 2 O 3 component, and 5.0 to 45.0 mass % of an SiO 2 component with respect to the mass of the whole porous material, and further contains 0.01 to 5.5 mass % of an Sr component in terms of SrO.

Increased resonant frequency potassium-doped hexagonal ferrite

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, strontium can be substituted out for a trivalent or tetravalent ion composition including potassium, thereby providing for advantageous properties.

Coloring solution for dental zirconia ceramics and method for using the same

A coloring solution for dental zirconia ceramics and a method for using the same are provided. The coloring solution consists of coloring agents, a solvent, and an additive. The coloring agents are a combination of two or more rare earth metal compounds, wherein the rare earth metal compounds having rare earth metal ions selected from the group consisting of praseodymium (Pr) ions, erbium (Er) ions, cerium (Ce) ions, and neodymium (Nd) ions. The concentration of the rare earth metal ions in the solution is 0.05˜3 mol/liter solvent. The molar ratio of Pr ions:Er ions:Ce ions:Nd ions in the solution is 1:(10˜50):(0˜20):(0˜30).

Method to reduce radiation-induced conductivity in ceramic dielectrics via the incorporation of deep traps

The radiation-induced conductivity in ceramic dielectrics can be reduced via the incorporation of deep traps. For example, the addition of deep traps via substituting Ce onto the Ti site in BaTiOreduces the radiation-induced conductivity by ˜30-40%. 1. A method to reduce the radiation-induced conductivity in a ceramic capacitor , comprising doping the ceramic dielectric of the capacitor with a dopant that provides a deep trap in the band gap of the ceramic dielectric.2. The method of claim 1 , wherein the dielectric comprises BaTiO.3. The method of claim 1 , wherein the dielectric comprises (BaSr)TiO claim 1 , Pb(Zr claim 1 ,Ti)O claim 1 , Ca(Zr claim 1 ,Ti)Oor (NaK)NbO.4. The method of claim 1 , wherein the dopant comprises a neutral dopant.5. The method of claim 4 , wherein the neutral dopant comprises Ce.6. The method of claim 4 , wherein the neutral dopant comprises a lanthanide.7. The method of claim 1 , wherein the dopant comprises a positively charged donor compensated by an acceptor.8. The method of claim 7 , wherein the donor dopant comprises an early transition metal.9. The method of claim 7 , wherein the acceptor comprises a late transition metal or alkali metal.10. The method of claim 7 , wherein the acceptor or donor is compensated by an intrinsic defect.11. The method of claim 1 , wherein the concentration of dopant is less than 10 mol %.12. The method of claim 1 , wherein the energy level of the deep trap is greater than 20% of the band gap energy of the ceramic dielectric. This application claims the benefit of U.S. Provisional Application No. 62/572,021, filed Oct. 13, 2017, which is incorporated herein by reference.This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.The present invention relates to radiation effects in ceramic dielectric materials and, in particular, to a method ...

RED ZIRCONIUM-OXIDE SINTERED BODY, PREPARATION METHOD AND USE

A red zirconium-oxide sintered body includes oxide of cerium, auxiliary metal oxide and oxide of zirconium, wherein the auxiliary metal oxide includes any one or a combination of at least two of oxide of yttrium, oxide of magnesium, oxide of calcium and oxide of ytterbium; the red zirconium-oxide sintered body satisfies conditions that the oxide of cerium has a content of mol %; the oxide of cerium comprises trivalent cerium oxide; a sum of contents of the oxide of cerium and the auxiliary metal oxide is mol %; and the sintered body has fracture toughness ≥ MPa•m. The zirconium-oxide sintered body has red appearance and toughness more than 8 MPa•m, and can be used for products such as mobile phone backboards, ornaments and dial plates. 120-. (canceled)21. A red zirconium-oxide sintered body , comprising an oxide of cerium , an auxiliary metal oxide and an oxide of zirconium , wherein the auxiliary metal oxide comprises any one of an oxide of yttrium , an oxide of magnesium , an oxide of calcium and an oxide of ytterbium , or a combination of at least two therefrom; andthe red zirconium-oxide sintered body satisfies conditions (1)-(4):(1) the oxide of cerium has a content of 0.2 to 1.5 mol %;(2) the oxide of cerium comprises a trivalent cerium oxide;(3) a sum of the oxide of cerium and the auxiliary metal oxide in content is 1.1 to 1.3 mol %; and{'sup': '1/2', '(4) the sintered body has fracture toughness ≥8 MPa•m,'}{'sub': 2', '2', '3, 'wherein the oxide of cerium is calculated based on CeO, and the oxide of yttrium is calculated based on YO.'}22. The red zirconium-oxide sintered body according to claim 21 , wherein the sintered body has a three-point bending strength ≥1000 MPa.23. The red zirconium-oxide sintered body according to claim 21 , wherein the sintered body has an average grain size ≤500 nm.24. The red zirconium-oxide sintered body according to claim 21 , wherein a particle size distribution of the grain size of the sintered body is 150 to 400 nm.25. The ...

RADIOFREQUENCY COMPONENT INCORPORATING TEMPERATURE COMPENSATED DIELECTRIC MATERIAL

Disclosed are embodiments of tungsten bronze crystal structures that can have both a high dielectric constant and low temperature coefficient, making them advantageous for applications that experience temperature changes and gradients. In particular, tantalum can be substituted into the crystal structure to improve properties. Embodiments of the material can be useful for radiofrequency applications such as resonators and antennas. 1. (canceled)2. A ceramic material formed from a Ba—Sm—Ti—Ta—O system and comprising a tungsten bronze crystal structure modified by substituting one or more lattice sites with one or more elements selected to increase the quality factor (Q) of the material , the ceramic material thereby having a dielectric constant of at least 60 and temperature coefficient of resonant frequency of less than 15.3. The ceramic material of wherein the tungsten bronze crystal structure is an orthorhombic tungsten bronze crystal structure and the one or more elements includes tantalum.4. The ceramic material of wherein the material has the chemical formula: BaSmTiTaOor BaSmTiTaO claim 2 , x being between 0 and 3.5. The ceramic material of wherein x=0.2 claim 4 , giving the formula BaSmTiTaO.6. The ceramic material of wherein the temperature coefficient of resonant frequency of less than 5.7. The ceramic material of wherein the material has no aluminum.8. The ceramic material of wherein the material has no rutile or perovskite phase.9. The ceramic material of further including CeO.10. The ceramic material of wherein the material has a Qf at 1 GHz of at least 7000.11. The ceramic material of wherein the material has a Qf at 1 GHz of at least 8000.12. A ceramic material having the composition BaSmTiTaO claim 2 , x being between 0 and 3 claim 2 , and comprising a tungsten bronze crystal structure modified by substituting one or more lattice sites with one or more elements selected to increase the quality factor (Q) of the material claim 2 , the ceramic material ...

Module

The present invention relates to a module (1) which comprises a power semiconductor device (2) and a ceramic capacitor (3) which is configured for cooling the power semiconductor device (2).

POROUS SiC CERAMIC AND METHOD FOR THE FABRICATION THEREOF

There is provided a method for the fabrication of porous SiC ceramic. The method comprises oxidizing particles of SiC ceramic thereby forming amorphous silica on the surface of the particles. The oxidized SiC particles are then mixed with an additive. Alternatively, layer(s) of the additive is (are) deposited on their surface by sol-gel technique. The oxidized SiC particles mixed or coated with the additive are then mixed with at least one pore-former. Alternatively, the oxidized SiC particles mixed or coated with the additive are coated with layer(s) of a polymer or pore-former by in-situ polymerization. In embodiments where the oxidized SiC particles are mixed with an additive and a pore-former or polymer, a further additive may be used. In each of these embodiments, the resulting product is then compacted into a green body which is heated and sintered to yield the porous SiC ceramic material. There is also provided a porous SiC ceramic fabricated by the method according to the invention.

Paramagnetic garnet-type transparent ceramic, magneto-optical material, and magneto-optical device

(In the formula, 0<x<0.08, 0≤y≤0.01, 0.004<z<0.16.)

COMPOSITE CERAMIC MATERIALS, ARTICLES, AND METHOD OF MANUFACTURE

Composite ceramic materials are disclosed herein which comprise two or more crystalline phases, wherein a first crystalline phase comprises a first refractory material having a first melting point, and a second crystalline phase comprises a second refractory material having a second melting point which is lower than the first melting point, and the second crystalline phase comprises large domain sizes of the second refractory material. Articles comprising such a composite ceramic material, such as honeycomb bodies, catalytic substrates, and particulate filters, are also disclosed herein, in addition to methods of manufacture thereof. 1. A ceramic material comprising:a first crystalline phase comprised of a first refractory material, the first crystalline phase having a first melting point;{'sup': '2', 'a second crystalline phase comprised of a second refractory material having a second melting point which is lower than the first melting point, wherein the second crystalline phase comprises domain sizes of greater than 5,000 μmas measured by Electron Backscattered Diffraction (EBSD).'}2. The ceramic material of wherein the first crystalline phase constitutes at least 50% by volume of the ceramic material.3. The ceramic material of wherein the second crystalline phase constitutes less than 50% by volume of the ceramic material.4. The ceramic material of wherein the first crystalline phase constitutes at least 50% by weight of the ceramic material.5. The ceramic material of wherein the second crystalline phase constitutes less than 35% by weight of the ceramic material.6. The ceramic material of wherein the first crystalline phase constitutes at least 55% by weight of the material claim 1 , and the second crystalline phase constitutes less than 35% by weight of the ceramic material.7. The ceramic material of wherein the first crystalline phase constitutes at least 60% by weight of the material claim 1 , and the second crystalline phase constitutes less than 30% by ...

CHROMIUM-FREE SILICATE-BASED CERAMIC COMPOSITIONS WITH REDUCED CURING TEMPERATURE

A composition based on a certain chromium-free silicate-based binder is described. The composition is an aqueous solution of lithium-doped potassium silicate in combination with an aluminum or aluminum alloy powder, zinc powder or a combination thereof. The coatings of the present invention are capable of achieving a full cure at temperatures as low as 350-450 degrees F. by the inclusion of a colloidal solution of a nano-sized ceria, thus making the coatings especially suitable for application on temperature sensitive base materials. 1. An aqueous slurry composition for the production of a coating on a substrate comprising:a binder comprising an aqueous solution of lithium doped potassium silicate, the binder characterized by an absence of chromium;an aluminum powder or an aluminum alloy powder incorporated into the binder; anda cure catalyst comprising nano-sized cerium oxide colloidal solution.2. The aqueous slurry composition of claim 1 , wherein the aluminum powder and the binder or the aluminum alloy powder and the binder are contained as a one-part composition.3. The aqueous slurry composition of claim 1 , wherein the nano-sized cerium oxide colloidal solution is stored separately from the mixture of the binder with the aluminum powder.4. The aqueous slurry composition of claim 1 , wherein the lithium doped potassium silicate and aluminum or aluminum alloy powder in the slurry are contained in a weight ratio of about 0.12:1 to 0.50:1 silicate to the aluminum or the aluminum alloy powder.5. An aqueous slurry composition for the production of a coating on a substrate comprising:a binder comprising an aqueous solution of lithium doped potassium silicate, the binder characterized by an absence of chromium;a zinc powder in combination with an aluminum or an aluminum alloy powder; anda cure catalyst accelerator comprising a nano-sized cerium oxide colloidal solution.6. The aqueous slurry composition of claim 5 , wherein the aluminum or aluminum alloy powder in the ...

PHOSPHOR AND LIGHT-EMITTING EQUIPMENT USING PHOSPHOR

Phosphors include a CaAlSiNfamily crystal phase, wherein the CaAlSiNfamily crystal phase comprises at least one element selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb. 126-. (canceled)27. Light-emitting equipment , comprising at least one light source , the light source comprising at least one light-emitting source and a phosphor , wherein:the light-emitting source emits a light having a wavelength of 330 to 500 nm; and{'sub': 3', '3, 'the phosphor comprises at least one of a nitride phosphor comprising at least one of CaAlSiNactivated with Eu and (Ca,Sr)AlSiNactivated with Eu.'}28. The liaht-emitting equipment according to claim 27 , wherein the light-emitting source emits a light having a wavelength of 420 to 500 nm.29. The light-emitting equipment according to claim 28 , wherein the phosphor further comprises at least one of:a phosphor having an emission peak at a wavelength of 500 to 570 nm; anda phosphor having an emission peak at a wavelength orf 550 to 600 nm.30. The light-emitting equipment according to claim 27 , wherein the light-emitting source emits a light having a wavelength of 330 to 420 nm.31. The light-emitting equipment according to claim 30 , wherein the phosphor further comprises:a phosphor having an emission peak at a wavelength of 420 to 500 nm; anda phosphor having an emission peak at a wavelength of 500 to 570 nm.32. The light-emitting equipment according to claim 27 , wherein the light-emitting equipment is lighting equipment.33. The light-emitting equipment according to claim 27 , wherein the light-emitting equipment is an image display unit.34. The light-emitting equipment according to claim 27 , wherein the nitride phosphor comprises a crystal phase having a crystal structure belonging to the Cmc2space group.36. The light-emitting equipment according to claim 35 , wherein the X Element is at least one element selected from the group consisting of O and N.37. The light-emitting equipment according ...

CERAMIC MATERIALS, DEVICES, AND METHODS FOR MICROWAVE APPLICATIONS

Ceramic materials, devices, and methods for microwave applications. In some embodiments, a composition can include a material with a formula BaSmTiAlO, with the quantity y being in a range 0 Подробнее

Method for producing ceramic composite

A method for producing a ceramic composite includes: preparing a sintered body in a plate form containing a fluorescent material having a composition of a rare earth aluminate, and aluminum oxide; and eluting the aluminum oxide from the sintered body by contacting the sintered body with a basic substance, for example, contained in an alkali aqueous solution, and the dissolution amount of the fluorescent material eluted from the sintered body in the step of eluting the aluminum oxide is 0.5% by mass or less based on an amount of the fluorescent material contained in the sintered body as 100% by mass.

Multilayer ceramic capacitor

A multilayer ceramic capacitor include: a ceramic body including first and second surfaces opposing each other and third and fourth surfaces connecting the first and second surfaces; a plurality of internal electrodes disposed inside the ceramic body and exposed to the first and second surfaces, the plurality internal electrodes each having one end exposed to the third or fourth surface; and first and second side margin portions disposed on sides of the internal electrodes exposed to the first and second surfaces. A dielectric composition of the first and second side margin portions is different from a dielectric composition of the ceramic body, and a dielectric constant of the first and second side margin portions is lower than a dielectric constant of the ceramic body.

GRINDING METHOD AND GRINDING MEDIUM

A method for manufacturing microfibrillated cellulose, a particulate grinding medium suitable for use in said method, a material which wears rough, and a method for making said particulate grinding medium. 144.-. (canceled)45. A method for manufacturing microfibrillated cellulose , the method comprising a step of microfibrillating a fibrous substrate comprising cellulose by grinding in the presence of a particulate grinding medium which is to be removed after the completion of grinding , wherein the particulate grinding medium has a specific gravity of at least about 3.5 , and wherein at the beginning of grinding the particulate grinding medium has a surface roughness of at least about 0.5 μm.46. A method for manufacturing microfibrillated cellulose , the method comprising a step of microfibrillating a fibrous substrate comprising cellulose by grinding in the presence of a particulate grinding medium which is to be removed after the completion of grinding , wherein the particulate grinding medium has a specific gravity of at least about 3.5 , and wherein at the beginning of grinding the particulate grinding medium has a mean coefficient of friction of at least about 0.10.47. The method according to claim 45 , wherein at the beginning of grinding the particulate grinding medium also has a mean coefficient of friction of at least about 0.10.48. The method according to claim 47 , wherein after the completion of grinding claim 47 , the surface roughness is at least about 90% of the surface roughness at the beginning of grinding.49. The method according to claim 47 , wherein after the completion of grinding the mean coefficient of friction is at least about 90% of the mean coefficient of friction at the beginning of grinding.50. The method according to claim 47 , wherein after the completion of grinding claim 47 , the surface roughness is at least the same as the surface roughness at the beginning of grinding.51. The method according to claim 47 , wherein after the ...

Chemically Stable Proton Conducting Doped BaCeO3

Solid electrolytes, anodes and cathodes for SOFC. Doped BaCeOuseful for solid electrolytes and anodes in SOFCs exhibiting chemical stability in the presence of CO, water vapor or both and exhibiting proton conductivity sufficiently high for practical application. Proton-conducting metal oxides of formula BaSrCeZrGdYO where x, y1, y2, and y3 are numbers as follows: x is 0.4 to 0.6; y1 is 0.1-0.5; y2 is 0.05 to 0.15, y3 is 0.05 to 0.15, and cathode materials of formula II GdPrBaCoFeO where z is a number from 0 to 1, and δ is a number that varies such that the metal oxide compositions are charge neutral. Anodes, cathodes and solid electrolyte containing such materials. SOFC containing anodes, cathodes and solid electrolyte containing such materials. 1. A metal oxide of formula I:{'br': None, 'sub': 1−x', 'x', '1−y1−y2−y3', 'y1', 'y2', 'y3', '3−δ, 'BaSrCeZrGdYO'}where x, y1, y2, and y3 are numbers as follows:x is 0.4 to 0.6;y1 is 0.1-0.5;y2 is 0.05 to 0.15y3 is 0.05 to 0.15, where all ranges are inclusive, andδ is a number that varies such that the metal oxide composition is charge neutral.2. (canceled)3. The metal oxide of claim 1 , wherein y1 is 0.1 to 0.3 claim 1 , y2=y3 and x is 0.4 to 0.6.4. (canceled)5. The metal oxide of claim 1 , which is Perovskite 1 claim 1 , BSCZGY2 claim 1 , BSCZGY3 or BSCZGY6.6. A dense claim 1 , proton-conducting solid electrolyte comprising the metal oxide of .7. (canceled)8. (canceled)9. A composite of Ni or NiO with the proton-conducting metal oxide of claim 1 , wherein the volume ratio of Ni to the proton-conducting metal oxide ranges from 30:70 to 70:30.10. The composite of claim 9 , wherein the volume ratio of Ni to the proton-conducting metal oxide ranges from 45:55 to 55 to 45.11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. An anode for a proton-conducting solid oxide fuel cell which comprises a proton-conducting metal oxide of claim 1 , and Ni claim 1 , wherein the volume ratio of Ni to the proton-conducting metal ...

HONEYCOMB STRUCTURE AND PRODUCTION METHOD FOR SAID HONEYCOMB STRUCTURE

The present invention relates to a honeycomb structured body including a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body is an extrudate containing ceria-zirconia composite oxide particles and alumina particles, and when the pore size of the partition wall of the honeycomb fired body is measured by mercury porosimetry, and the measurement results are shown as a pore size distribution curve with pore size (μm) on the horizontal axis and log differential pore volume (ml) on the vertical axis, at least one peak is present in each of the pore size ranges of 0.01 to 0.1 μm and 0.1 to 5 μm. 1. A honeycomb structured body comprising:a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween,wherein the honeycomb fired body is an extrudate containing ceria-zirconia composite oxide particles and alumina particles, andwhen the pore size of the partition wall of the honeycomb fired body is measured by mercury porosimetry, and the measurement results are shown as a pore size distribution curve with pore size (μm) on the horizontal axis and log differential pore volume (ml) on the vertical axis,at least one peak is present in each of the ranges of 0.01 to 0.1 μm and 0.1 to 5 μm.2. The honeycomb structured body according to claim 1 ,wherein the volume of pores having a size of 0.1 μm or less is 50% by volume or more relative to the total pore volume.3. The honeycomb structured body according to claim 2 ,wherein the volume of pores having a size of 0.1 μm or less is 70% by volume or more relative to the total pore volume.4. The honeycomb structured body according to claim 1 ,wherein the honeycomb fired body has a porosity of 55 to 70%.5. The honeycomb structured body according to claim 1 ,wherein the alumina particles are θ-phase alumina particles.6. The honeycomb ...

Shaped Ceramic Abrasive Particle and Method for Producing a Shaped Ceramic Abrasive Particle

A shaped ceramic abrasive particle based on alpha-AlOcontains a proportion of 5% to 30% by weight of ZrO. The alpha-AlOhas a medium crystallite size of 0.5 μm to 3 μm and the ZrOhas a medium crystallite size of 0.25 μm to 8 μm. 1. A shaped ceramic abrasive particle based on alpha-AlOcomprising:{'sub': '2', 'a ZrOportion comprising from 5% by weight to 30% by weight of the abrasive particle,'}{'sub': 2', '3', '2, 'wherein the alpha-AlOhas an average crystallite size of from 0.5 μm to 3 μm and the ZrOhas an average crystallite size of from 0.25 μm to 8 μm.'}2. The shaped ceramic abrasive particle as claimed in claim 1 , wherein the ZrOportion comprises from 10% by weight to 25% by weight of the abrasive particle.3. The shaped ceramic abrasive particle as claimed in claim 1 , wherein a ratio of the average crystallite size of the alpha-AlOto the average crystallite size of the ZrOis from 0.4 to 7.4. The shaped ceramic abrasive particle as claimed in claim 1 , further comprising:{'sub': '2', 'a stabilizer that stabilizes the ZrO, the stabilizer comprising less than or equal to 20% by weight of the abrasive particle,'}wherein the stabilizer includes at least one of yttrium oxide, magnesium oxide, calcium oxide, and cerium oxide.5. The shaped ceramic abrasive particle as claimed in claim 1 , further comprising:a MgO portion comprising less than or equal to 0.5% by weight of the abrasive particle.6. The shaped ceramic abrasive particle as claimed in claim 1 , further comprising:{'sub': '2', 'a SiOportion comprising from 0.01% by weight to 2% by weight of the abrasive particle.'}7. The shaped ceramic abrasive particle as claimed in claim 1 , further comprising:{'sub': '2', 'a NaO portion comprising from 0.01% by weight to 0.5% by weight of the abrasive particle.'}8. The shaped ceramic abrasive particle as claimed in claim 1 , further comprising:a CaO comprising from 0.01% by weight to 0.03% by weight of the abrasive particle.9. The shaped ceramic abrasive particle as ...

Additive manufacturing process for producing ceramic articles using a sol containing nano-sized particles

The present invention relates to a process for producing a ceramic article, the process comprising the steps of providing a printing sol, the printing sol comprising solvent, nano-sized particles, radiation curable monomer(s) and photoinitiator, the printing sol having a viscosity of less than 500 mPa*s at 23° C., processing the printing sol as construction material in an additive manufacturing process to obtain a 3-dim article being in a gel state, the 3-dim article having a Volume A, transferring the 3-dim article being in a gel state to a 3-dim article being in an aerogel state, heat treating the 3-dim article to obtain a sintered 3-dim ceramic article, the ceramic article having a Volume F, Volume A of the 3-dim article in a gel state being more than 500% of Volume F of the ceramic article in its sintered state. The invention also relates to a ceramic article obtainable according to such a process. The ceramic article can have the shape of a dental or orthodontic article.

METHOD FOR MANUFACTURING WAVELENGTH CONVERSION MEMBER

A method for manufacturing a wavelength conversion member that offers a high emission intensity and a high light conversion efficiency is provided. The method for manufacturing a wavelength conversion member includes providing a green body containing an yttrium-aluminum-garnet phosphor with a composition represented by Formula (I) below and alumina particles with an alumina purity of 99.0% by mass or more, primary-sintering the green body to obtain a first sintered body, and secondary-sintering the first sintered body by applying a hot isostatic pressing (HIP) treatment to obtain a second sintered body. 1. A method for manufacturing a wavelength conversion member , the method comprising: an yttrium-aluminum-garnet phosphor having a composition represented by Formula (I) below; and', 'alumina particles with an alumina purity of 99.0% by mass or more;, 'providing by applying a cold isostatic pressing (CIP) treatment a green body comprisingprimary-sintering the green body at a temperature in a range of 1200° C. or more and 1800° C. or less to obtain a first sintered body; and {'br': None, 'sub': 1-a-b', 'a', 'b', '3', '5', '12, '(YGdCe)AlO\u2003\u2003(I)'}, 'secondary-sintering the first sintered body by applying a hot isostatic pressing (HIP) treatment to obtain a second sintered body,'}wherein a and b satisfy 0≤a≤0.3 and 0 Подробнее

MANUFACTURING METHOD OF MULTILAYER SHELL-CORE COMPOSITE STRUCTURAL COMPONENT

A manufacturing method of a multilayer shell-core composite structural component comprises the following procedures: (1) respectively preparing feeding material for injection forming of a core layer, a buffer layer and a shell layer, wherein the powders of feeding material of the core layer and the shell layer are selected from one or more of metallic powder, ceramic powder or toughened ceramic powder, and are different from each other, and the powder of feeding material of the buffer layer is gradient composite material powder; (2) layer by layer producing the blank of multilayer shell-core composite structural component by powder injection molding; (3) degreasing the blank; and (4) sintering the blank to obtain the multilayer shell-core composite structural component. The multilayer shell-core composite structural component has the advantages of high surface hardness, abrasion resistance, uniform thickness of the shell layer, stable and persistent performance. 1. A method for manufacturing an acetabulum having a multilayer shell-core composite structure , comprising:preparing feedstocks of a shell layer, at least one transition layer and a core layer respectively;performing a powder injection molding with the feedstocks, to obtain a green body of the acetabulum comprising the shell layer, the at least one transition layer and the core layer;performing debinding on the green body of the acetabulum; andsintering the green body of the acetabulum after being debound, to obtain the acetabulum;wherein preparing a feedstock of each of the shell layer, the transition layer and the core layer comprises: mixing a main powder of the each layer, a binder and an additive comprising a surface active agent and a plasticizer to obtain a mixture, where the main powder of the core layer is made of a powdered ceramic material, the main powder of the shell layer is made of a metal powder material or a powdered toughened ceramic material, and the main powder of the transition layer ...

ZIRCONIA SINTERED BODY, ZIRCONIA COMPOSITION, ZIRCONIA PRE-SINTERED BODY AND PREPARING METHOD THEREOF, AND DENTAL PROSTHESIS

A zirconia sintered body having gradation is provided. A method for preparing a zirconia composition comprises preparing a plurality of powders for lamination; the lamination powders containing zirconia, a stabilizer(s) suppressing phase transition of zirconia and a pigment(s) at respective different pigment content ratios, and laminating the lamination powders in a mold. In the laminating step, the mold is vibrated after at least two lamination powders are charged into the mold. 113-. (canceled)14. A zirconia pre-sintered body , produced by a method comprising:preparing a first powder and a second powder each comprising zirconia, a stabilizer capable of suppressing phase transition of zirconia, and a pigment, where the first powder has a lower content ratio of the pigment than the second powder;mixing the first powder and the second powder to form at least one powder for lamination; andlaminating at least two of the first powder, the second powder, and the at least one powder for lamination in a mold, to prepare a zirconia composition,wherein, when a first test zirconia pre-sintered body is prepared by pre-sintering the zirconia composition at a pre-sintering temperature of 800° C. to 1200° C., and a second test zirconia pre-sintered body is prepared by pre-sintering only one of the first powder, the second powder, and the at least one powder for lamination at the pre-sintering temperature,a flexural strength of the first test zirconia pre-sintered body is not less than 90% of a flexural strength of the second test zirconia pre-sintered body, where the flexural strength of the first test zirconia pre-sintered body is measured pursuant to JISR1601 such that a load point of a three-point bending test is aligned with an interlayer boundary formed by the laminating and that a load is applied in a direction along the interlayer boundary.15. A zirconia pre-sintered body , produced by a method comprising:preparing a first powder and a second powder each comprising ...