ZENTRIFUGALSINTERSYSTEM

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

REFRACTORY PRODUCT HAVING HIGH ZIRCONIA CONTENT

La présente invention concerne un produit réfractaire fondu et coulé comportant, en pourcentages massiques sur la base des oxydes et pour un total de 100 % des oxydes : ZrO2 + Hf2O : complément à 100 % 4,5 % < SiO2 < 6,0 % Ai2O3 < 0,80 % 0,3 % < B2O3 < 1,0 % Ta2O5 + Nb2O5 < 0,15 % Na2O + K2O < 0,1 % K2O < 0,04 % CaO + SrO + MgO + ZnO + BaO < 0,4 % P2O6 < 0,05 % Fe2O3 + TiO2 < 0,55 % autres espèces oxydes, y compris optionneilement Y2O3 : < 1,5 %, avec Y2O3 < 0,3 % ie rapport « A/B » des teneurs massiques AI2O3 / B2O3 étant compris entre 0,5 et 2,0. Application aux fours de fusion de verre.

THE MANUFACTURING METHOD OF THE OPTICAL LAYER COMPRISING THE THERMOCHROMIC LAYER USING HYDROTHERMAL METHOD AND PHOTONIC SINTERING PROCESS

PRODUCTION OF ORIENTED MATERIAL OR COMPOSITE MATERIAL THROUGH CENTRIFUGAL BURNING

A process for producing a ceramic sinter or inorganic film in which anisotropic particles or anisotropic crystals have been oriented; or a process for producing a bonded composite material which comprises a base sample and another material tenaciously bonded to a surface of the base. The processes are characterized by imposing a centrifugal force during burning (heating). © KIPO & WIPO 2007 ...

POLYCRYSTALLINE ALUMINUM NITRIDE MATERIAL AND METHOD OF PRODUCTION THEREOF

Methods of preparing polycrystalline aluminum nitride materials that have high density, high purity, and favorable surface morphology are disclosed. The methods generally comprises pressing aluminum nitride powders to form a slug, sintering the slug to form a sintered, polycrystalline aluminum nitride boule, and optionally shaping the boule and/or polishing at least a portion of the boule to provide a finished substrate. The sintered, polycrystalline aluminum nitride materials beneficially are prepared without the use of any sintering aid or binder, and the formed materials exhibit excellent density, AlN purity, and surface morphology.

COMPOSITE MATERIAL AND PROCESS FOR PRODUCING THE SAME

A composite material based on the product of combustion synthesis and/or heat generation, and an effective process for producing the same. The composite material is essentially (1) a refractory/metal composite material which comprises one or more skeletal structures formed by joining three-dimensionally one or more types of refractory particle selected from among carbides, borides, nitrides and silicides of metals selected from among titanium, zirconium, tantalum, niobium, silicon, chromium, tungsten and molybdenum and a metallic phase comprising an alloy or intermetallic compound filled in the gaps within or among the skeletal structures, or (2) a sintered composite material comprising superabrasive grains dispersed in the surface or surface layer part including the part corresponding to the working face of a matrix or the whole of a matrix containing a metallic substance produced by combustion synthesis and/or a refractory. It is effective to use also superabrasive grains coated with ...

METHOD OF MANUFACTURING GARNET INTERFACES AND ARTICLES CONTAINING THE GARNETS OBTAINED THEREFROM

Disclosed herein is a method including disposing in a mold a powder that has a composition for manufacturing a scintillator material and compressing the powder to form the scintillator material; where an exit surface of the scintillator material has a texture that comprises a plurality of projections that reduce total internal reflection at the exit surface and that increase the amount of photons exiting the exit surface by an amount of greater than or equal to 5% over a surface that does not have the projections.

СПОСОБ ИЗГОТОВЛЕНИЯ УГЛЕРОДНЫХ ВОЛОКОН ИЗ БИОПРЕКУРСОРОВ И ПОЛУЧАЕМЫЕ УГЛЕРОДНЫЕ ВОЛОКНА

CENTRIFUGAL SINTER SYSTEM

TOOL DIFFERENTIAL COMPRESSION OF A POWDERY MATERIAL, COMPRISING A DEFORMABLE MEMBRANE

TOOL DIFFERENTIAL COMPRESSION OF A POWDERY MATERIAL, COMPRISING A DEFORMABLE MEMBRANE

L'invention concerne un outil (1) pour comprimer de façon différentielle un matériau poudreux (5). L'outil (5) comprend un piston de compression différentielle (4) et un support (2). Le piston (4) comprend une première partie (40) configurée pour exercer une pression sur une première région (51) d'une surface extérieure du matériau poudreux (5). Il comprend une deuxième partie (43) avec un évidement espacé latéralement de la première partie (40) et configuré pour être en regard d'une deuxième région (52) de la surface extérieure du matériau poudreux (5). L'outil (1) comprend une membrane (6) déformable par le piston (4), la membrane déformable (6) étant configurée pour retenir au moins partiellement le matériau poudreux (5) dans l'outil (1).

METHOD OF MAKING CARBON FIBER PRECURSORS FROM BIOSOURCES AND CARBON FIBER

CERAMIC MEMBER, CERAMIC HEATER, SUBSTRATE PLACING MECHANISM, SUBSTRATE PROCESSING APPARATUS AND METHOD FOR MANUFACTURING CERAMIC MEMBER

A wafer mounting table constituted as a ceramic heater has a power feeding terminal section for a heating element and a bonding section to a supporting member as portions which are likely to be crack starting points. The wafer mounting table is constituted to permit compressive stress to be generated in the power feeding terminal section and/or the bonding section which are likely to be the crack starting points.

STRUCTURE INCLUDING A THIN-FILM LAYER AND FLASH-SINTERING METHOD OF FORMING SAME

Methods of forming structures including a substrate (e.g., ceramic) and an interface layer comprising a metal are disclosed. Structures and electrochemical cells and batteries are also disclosed. Exemplary methods include flash sintering of metal and ceramic materials. Various structures may be suitable for use as solid electrolytes in solid-state electrochemical cells, as well as for many other applications.

CENTRIFUGAL SINTERING APPARATUS

PROBLEM TO BE SOLVED: To provide a rotor, shaft or sample holder of a centrifugal sintering apparatus. SOLUTION: The ceramic member used for a centrifugal sintering apparatus comprises a rotor, shaft or sample holder for applying the fields of centrifugal force and temperature to a formed compact comprising a ceramic or metal powder, or a ceramic precursor film. The ceramic member is composed so as to indirectly heat a sample by forming the rotor for rotating the sample holder using a conductive silicon carbide ceramic and by the selective self-heating of only the rotor using an induction heating means. Alternatively, the ceramic member is composed to indirectly heat the sample by forming the sample holder using a material having large dielectric loss and by the selective heating of only the holder using the induction heating means. COPYRIGHT: (C)2004,JPO&NCIPI ...

СПОСОБ ПРОИЗВОДСТВА ГРАНИЧНЫХ ПОВЕРХНОСТЕЙ ГРАНАТА И ИЗДЕЛИЯ, СОДЕРЖАЩИЕ ПОЛУЧЕННЫЕ ТАКИМ СПОСОБОМ ГРАНАТЫ

Изобретение может быть использовано при изготовлении сцинтилляционных материалов для томографов. Порошок для производства сцинтилляционного материала помещают в форму и сжимают одноосным или изостатическим сжатием. Порошок можно дополнительно нагреть до 480-2200 °C. Формируют сцинтилляционный материал, выходная поверхность которого содержит множество геометрических объектов, уменьшающих полное внутреннее отражение на выходной поверхности и увеличивающих количество фотонов, выходящих из выходной поверхности, на величину, большую или равную 5% по сравнению с поверхностью, у которой нет геометрических объектов. Сцинтилляционный материал имеет структуру граната и состав в соответствии с формулой MMMMO, где O - кислород, M, M, Mи Mотличаются друг от друга, M- редкоземельный элемент, включающий гадолиний или его комбинации с иттрием, лютецием, скандием, M- алюминий, M- галлий, M– содопант, являющийся церием и/или празеодимом; сумма а+b+c+d приблизительно равна 8, «a» от приблизительно 2 до приблизительно ...

Material with multiphase structure

Der Werkstoff mit mehrphasigem Gefüge umfassend wenigstens eine erste feste Phase und wenigstens eine zweite feste Phase, zeichnet sich dadurch aus, dass die erste Phase und die zweite Phase jeweils ein Metall, eine Metalllegierung, ein keramisches Material oder Kombinationen hiervon in Form eines Verbundwerkstoffs sind, die Phasen des Gefüges makroskopisch voneinander unterscheidbar sind, das mehrphasige Gefüge als Einlagerungsgefüge oder als dreidimensionales Durchdringungsgefüge ausgebildet ist, wobei das Einlagerungsgefüge die erste Phase als in drei Raumdimensionen kontinuierlich auftretende Matrixphase und die zweite Phase als diskontinuierliche, statistisch verteilte Einlagerungsphase aufweist, wobei die zweite Phase diskontinuierliche Bereiche aufweist, die in der Projektion jeweils eine Fläche von mindestens 0,2 mm2 aufweisen, und wobei die erste Phase durch Sintern unter Anwendung von Druck und Temperatur hergestellt ist.

Werkstoff mit mehrphasigem Gefüge

The invention relates to a material having a multiphase structure, comprising at least one first solid phase and at least one second solid phase, which material is characterized in that the first phase and the second phase are each a metal, a metal alloy, a ceramic material or combinations thereof in the form of a composite material, the phases of the structure can be distinguished from one another macroscopically, the multiphase structure is formed as an embedding structure or as a three-dimensional penetration structure, wherein the embedding structure has the first phase as a matrix phase occurring continuously in three spatial dimensions, and the second phase as a discontinuous, statistically distributed embedding phase, and wherein the first phase is produced by sintering.

METHOD FOR TREATING MAGNESITE, A SINTERED MAGNESIA PRODUCED BY THE METHOD, AND A SINTERED REFRACTORY CERAMIC PRODUCT PRODUCED BY THE METHOD

The invention relates to a method for treating magnesite, a sintered magnesia produced by the method, and a sintered, refractory ceramic product produced by the method.

Oxide sintered body and sputtering target, and method of manufacturing the same

Preparation method of sedimentation type self-propagating silicon nitride

CERAMIC MEMBER, CERAMIC HEATER, SUBSTRATE PLACING MECHANISM, SUBSTRATE PROCESSING APPARATUS AND METHOD FOR MANUFACTURING CERAMIC MEMBER

A wafer placing table (11) constituted as a ceramic heater has a power feeding section (14) for a heat generating body (13) and a bonding section (16) to a supporting member (12) as portions which can be break starting points. The wafer placing table is constituted to permit compressive stress to be generated in the power feeding terminal section (14) and/or the bonding section (16) which can be the break starting points. © KIPO & WIPO 2008 ...

POLYMER FILM, WATERPROOF SOUND-PERMEABLE MEMBRANE, WATERPROOF SOUND-PERMEABLE MEMBER, ELECTRONIC DEVICE, ELECTRONIC DEVICE CASE, WATERPROOF SOUND TRANSMISSION STRUCTURE, WATERPROOF GAS-PERMEABLE MEMBRANE, WATERPROOF GAS-PERMEABLE MEMBER, WATERPROOF VENTILATION STRUCTURE, SUCTION SHEET, METHOD FOR HOLDING WORKPIECE BY SUCTION ON SUCTION UNIT, METHOD FOR PRODUCING CERAMIC CAPACITOR, OPTICAL FILM, OPTICAL MEMBER, AND COMPOSITION

The polymer film of the present invention has through holes extending from one principal surface of the polymer film to the other principal surface of the polymer film. The through holes are straight holes having a central axis extending straight, and have a shape in which the area of a cross-section perpendicular to the direction of the central axis increases from the one principal surface of the polymer film toward the other principal surface. This polymer film has passages in its thickness direction, has an unconventional structure, and can be used in various applications, such as in a waterproof sound-permeable membrane, in a waterproof gas-permeable membrane, and in a suction sheet. The ratio a/b of the opening diameter a of the through holes at the one principal surface to the opening diameter b of the through holes at the other principal surface is 80% or is less than 80%.

PRODUCTION OF ORIENTED MATERIAL OR BONDING MATERIAL BY CENTRIFUGAL BURNING

Dielectric material and electrostatic chucking device

СПОСОБ ОБРАБОТКИ МАГНЕЗИТА, ПОЛУЧЕННАЯ ПОСРЕДСТВОМ СПОСОБА СПЕЧЕННАЯ МАГНЕЗИЯ И ИЗГОТОВЛЕННЫЙ ПОСРЕДСТВОМ СПОСОБА СПЕЧЕННЫЙ ОГНЕУПОРНЫЙ КЕРАМИЧЕСКИЙ ПРОДУКТ

CENTRIFUGAL SINTERING SYSTEM

REFRACTORY PRODUCT HAVING A HIGH ZIRCONIA CONTENT

La présente invention concerne un produit réfractaire fondu et coulé comportant, en pourcentages massiques sur la base des oxydes et pour un total de 100 % des oxydes : ZrO2 + Hf2O : complément à 100 % 4,5 % < SiO2 < 6,0 % 0,80 % = AI2O3 < 1,10 % 0,3 % < B2O3 < 1,5 % Ta2O5 + Nb2O5 < 0,15 % Na2O + K2O < 0,1 % K2O < 0,04 % CaO + SrO + MgO + ZnO + BaO < 0,4 % P2O5 < 0,05 % Fe2O3 + TiO2 < 0,55 % autres espèces oxydes : < 1,5 % le rapport « A/B » des teneurs massiques AI2O3 / B2O3 étant compris entre 0,75 et 1,6. Application aux fours de fusion de verre.

Core-shell structure carbon-coated aluminum nanocapsule Al2O3 composite substrate and preparation method thereof

METHOD OF MAKING CARBON FIBER PRECURSORS FROM BIOSOURCES AND CARBON FIBER

L'invention porte sur un procédé de fabrication (1) d'une fibre ou d'un ensemble de fibres hautement carbonés (2), caractérisé en ce qu'il comprend la combinaison (100) d'un précurseur structuré (10) comportant une fibre ou un ensemble de fibres d'hydrocellulose, et d'un précurseur non structuré (15), comportant de la lignine ou un dérivé de lignine, se présentant sous la forme d'une solution ayant une viscosité inférieure à 15 000 mPa.s-1 à la température à laquelle se déroule l'étape de combinaison (100), de façon à obtenir une fibre ou un ensemble de fibres d'hydrocellulose recouvertes de ladite lignine ou dérivé de lignine (20), ledit procédé comprenant en outre les étapes suivantes : - une étape de stabilisation thermique et dimensionnelle (200) de la fibre ou de l'ensemble de fibres d'hydrocellulose recouvertes de ladite lignine (20) de façon à obtenir une fibre ou un ensemble de fibres d'hydrocellulose recouvertes d'un dépôt de lignine ou dérivé de lignine (30), et - une étape de ...

Methods For Forming Ceramic Honeycomb Articles

Processes for manufacturing porous ceramic honeycomb articles are disclosed. The processes include mixing a batch of inorganic components with processing aids to form a plasticized batch. The batch of inorganic components include talc having dpt5010 m, a silica-forming source having dps5020 m, an alumina-forming source having a median particle diameter dpa50 of less than or equal to 10.0 m, and a pore former having dpp5020 m. The plasticized batch is formed into a green honeycomb article and fired under conditions effective to form a porous ceramic honeycomb article comprising a cordierite crystal phase and having a microcrack parameter (Nb3) of from about 0.05 to about 0.25. After firing, the green honeycomb article the porous ceramic honeycomb article is exposed to a microcracking condition, which increases the microcrack parameter (Nb3) by at least 20%.

Fluorescent member, its manufacturing method, and light-emitting apparatus

A fluorescent member according to present invention is composed of a sintered body for wavelength conversion containing a matrix containing magnesium oxide and magnesium hydroxide as main components, and phosphor particles dispersed in the matrix. A thermal conductivity of the fluorescent member is preferably 5 W/(m·K) or higher. A fluorescent member having both a satisfactory thermal conductivity and a satisfactory fluorescent property is provided without requiring a high-temperature sintering process (a high-temperature process at a temperature higher than 250° C.). Further, a method for manufacturing such a fluorescent member and a light-emitting apparatus using such a fluorescent member are provided.

MATERIAL HAVING A MULTIPHASE STRUCTURE

CERAMIC LAMINATED CIRCUIT SUBSTRATE AND MANUFACTURE THEREOF AS WELL AS APPLICATION THEREOF

PURPOSE: To obtain a ceramic laminated circuit substrate which is low in dispersion of burning shrinkage and in porosity in the substrate by forming a fiber composite ceramic insulating layer containing a fiber in its layer. CONSTITUTION: A fiber composite green sheet 21A is manufactured by adding at least a kind of fibers out of the fibers such as a whisker, glass filament, and chopped strand 1A to the material of a green sheet 21 and the above green sheet is laminated so that its casting direction has a different direction and then, a substance 24 laminated to a green sheet 21B which does not contain the fibers is formed after burning it. An insulating layer thus prevents burning shrinkage in the laminating direction of a ceramic insulation layer which does not contain the fibers by adding at least a layer of the fiber composite ceramic insulating layer to a laminated substance as a laminating layer or layers and further, prevents shrinkage in the surface direction of a ceramic laminated ...

ЗАГОТОВКА ДЛЯ ИЗГОТОВЛЕНИЯ ЗУБНОГО ПРОТЕЗА

Группа изобретений относится к заготовке для изготовления зубного протеза, к пористой подложке и к композитному блоку на основе такой заготовки, а также к способам изготовления указанных выше заготовки, подложки и композитного блока. Заготовка содержит группу агломерированных частиц керамики, стеклокерамики или стекла, так что (в об.%): более 40% и менее 90% частиц вышеупомянутой группы имеют размер более 0,5 мкм и менее 3,5 мкм (далее обозначены как «частицы эмали») и более 10% и менее 60% частиц группы имеют размер более 3,5 мкм и менее 5,5 мкм (далее обозначены как «частицы дентина»). Распределение частиц по размерам указанной группы частиц является бимодальным и содержит первую и вторую основные моды, причем первая основная мода составляет более 1,5 мкм и менее 3,5 мкм, и вторая мода составляет более 3,5 мкм и менее 5,5 мкм. Частицы эмали и дентина вместе составляют более 90 % объема агломерированных частиц. При этом микроструктура заготовки такова, что имеется ось X, называемая "осью ...

СПОСОБ ИЗГОТОВЛЕНИЯ УГЛЕРОДНЫХ ВОЛОКОН ИЗ БИОПРЕКУРСОРОВ И ПОЛУЧАЕМЫЕ УГЛЕРОДНЫЕ ВОЛОКНА

Изобретение относится к области углеродных волокон, и более конкретно к углеродным волокнам, производимым из получаемых из биоисточников прекурсоров. Способ получения углеродистого волокна или набора волокон включает объединение структурированного прекурсора, содержащего волокно или набор волокон гидроцеллюлозы, и неструктурированного прекурсора, содержащего лигнин или его производное, в форме раствора, имеющего вязкость менее чем 15000 мПа/с для получения волокна или набора волокон гидроцеллюлозы, покрытых лигнином или его производным. Причем способ дополнительно содержит стадию термической и размерной стабилизации и стадию карбонизации. Обеспечивается уменьшение количества стадий получения углеродных волокон, снижение энергозатрат, получение углеродных волокон с высокой механической стабильностью, высоким выходом по углероду и пониженной плотностью. 6 н. и 12 з.п. ф-лы, 3 ил., 1 табл.

Устройство для спекания керамических изделий с наложением внешнего давления

Полезная модель относится к области производства многослойных керамических материалов. Предложено устройство для спекания керамических изделий, содержащее нагревную камеру, пресс-форму, внутри которой располагается изделие, давление на которое передается посредством стержня от пресса, расположенного вне нагревной камеры. Верхняя формообразующая часть пресс-формы выполнена клиновым стержнем со съёмником и подвижными формообразующими элементами и прессующим пуансоном вертикального нагружения. Нижняя часть пресс-формы выполнена в виде плиты с подвижной и неподвижной частями для формирования боковых поверхностей спекаемого изделия. Неподвижная часть зафиксирована на плите, при этом подвижная часть соединена с неподвижной с помощью штока гидроцилиндра горизонтального нагружения на спекаемое изделие. На штоке гидроцилиндра вертикального нагружения и штоке гидроцилиндра горизонтального нагружения смонтированы фотодиодные системы для синхронизации движения втулки съёмника и штоков указанных гидроцилиндров ...

СПОСОБ ПРОИЗВОДСТВА ГРАНИЧНЫХ ПОВЕРХНОСТЕЙ ГРАНАТА И ИЗДЕЛИЯ, СОДЕРЖАЩИЕ ПОЛУЧЕННЫЕ ТАКИМ СПОСОБОМ ГРАНАТЫ

ЗАГОТОВКА ДЛЯ ИЗГОТОВЛЕНИЯ ЗУБНОГО ПРОТЕЗА

Joining metal to non-metallic, especially glass or ceramic part

A method of joining metal parts (especially of aluminium or copper) to non-metallic parts (especially of glass or ceramic) involves vibration welding with a vibratory motion, comprising closed oscillation paths which are identical for all points within the welding area, and with press-down force (AP) application acting perpendicularly to the welding area.

METHOD FOR PRODUCING CARBON FIBRES FROM BIOSOURCED PRECURSORS AND CARBON FIBRES PRODUCED

L'invention porte sur un procédé de fabrication (1) d'une fibre ou d'un ensemble de fibres hautement carbonés (2), caractérisé en ce qu'il comprend la combinaison (100) d'un précurseur structuré (10) comportant une fibre ou un ensemble de fibres d'hydrocellulose, et d'un précurseur non structuré (15), comportant de la lignine ou un dérivé de lignine, se présentant sous la forme d'une solution ayant une viscosité inférieure à 15 000 m Pa.s-1 à la température à laquelle se déroule l'étape de combinaison (100), de façon à obtenir une fibre ou un ensemble de fibres d'hydrocellulose recouvertes de ladite lignine ou dérivé de lignine (20), ledit procédé comprenant en outre les étapes suivantes : - une étape de stabilisation thermique et dimensionnelle (200) de la fibre ou de l'ensemble de fibres d'hydrocellulose recouvertes de ladite lignine (20) de façon à obtenir une fibre ou un ensemble de fibres d'hydrocellulose recouvertes d'un dépôt de lignine ou dérivé de lignine (30), et - une étape de ...

Centrifugal sintering system

Ceramic member and method of manufacturing the same, heater, placing mechanism, treatment apparatus

A wafer placing table (11) constituted as a ceramic heater has a power feeding section (14) for a heat generating body (13) and a bonding section (16) to a supporting member (12) as portions which can be break starting points. The wafer placing table is constituted to permit compressive stress to be generated in the power feeding terminal section (14) and/or the bonding section (16) which can be the break starting points.

Method for closed pore ceramic

A method includes forming a ceramic member that has a plurality of closed pores within a ceramic matrix. The forming includes compacting a ceramic powder to form intra-particle pores between particles of the ceramic powder, and sintering the compacted ceramic powder to cause diffusion of the ceramic powder and formation of the ceramic matrix. The diffusion does not fill the intra-particle pores and leaves the closed pores.

Dense composite material, method for producing the same, joined body, and member for semiconductor manufacturing device

According to the present invention, a dense composite material includes titanium silicide in an amount of 43 to 63 mass %; silicon carbide in an amount less than the mass percentage of the titanium silicide; and titanium carbide in an amount less than the mass percentage of the titanium silicide. In the dense composite material, a maximum value of interparticle distances of the silicon carbide is 40 μm or less, a standard deviation of the interparticle distances is 10 or less, and an open porosity of the dense composite material is 1% or less.

Centrifugal sintering system

PREFORM FOR A DENTAL PROSTHESIS

L'invention concerne une préforme poreuse destinée à la fabrication d'une prothèse dentaire, ladite préforme comportant un ensemble de particules agglomérées, en matière céramique, en matière vitrocéramique ou en verre, tel que, en pourcentages volumiques : - plus de 40% et moins de 90% des particules dudit ensemble présentent une taille supérieure à 0,5 µm et inférieure à 3,5 µm, lesdites particules étant désignées ci-après « particules d'émail », et - plus de 10% et moins de 60% des particules dudit ensemble présentent une taille supérieure à 3,5 µm et inférieure à 5,5 µm, lesdites particules étant désignées ci-après « particules de dentine », le rapport Ve/(Ve+Vd) du pourcentage volumique Ve en particules d'émail sur le pourcentage volumique Ve en particules de dentine évoluant de manière continue suivant un axe X, dit « axe de variation ».

PRODUCTION OF CERAMIC SINTER AND CERAMIC FILM THROUGH CENTRIFUGAL BURNING

THE MANUFACTURING METHOD OF THE OPTICAL LAYER COMPRISING THE THERMOCHROMIC LAYER USING HYDROTHERMAL METHOD AND PHOTONIC SINTERING PROCESS

Method of producing a multi-layer ceramic electronic component, multi-layer ceramic electronic component, and circuit board

A method of producing a multi-layer ceramic electronic component includes: forming a base film formed from an electrically conductive material on a surface of a ceramic body including internal electrodes laminated and drawn to the surface in such a manner that the base film is connected to the internal electrodes; forming a first nickel film on the base film by an electrolytic plating method; performing, after forming the first nickel film, heat treatment in a weakly reducing atmosphere at a temperature equal to or higher than a temperature at which the first nickel film is recrystallized; and forming a second nickel film on the first nickel film, on which the heat treatment is performed, by an electrolytic plating method.

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

POROUS MoSi2 MATERIAL BY SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS, AND MANUFACTURING METHOD THEREOF

PURPOSE: Provided is a fabrication method of porous MoSi2 material with high mechanical durability and controlled pore size distribution by self-propagating high temperature synthesis, and a manufacturing method thereof are provided. CONSTITUTION: The material comprises an uppermost MoSi2 layer formed using coarse Mo powder with an average particle size of 200 μm and coarse Si powder with an average particle size of 200 μm, a plurality of intermediate MoSi2 layers formed using coarse Mo powder with an average particle size of 200 μm and fine Si powder with an average particle size of 1.5 μm and a lowermost MoSi2 layer formed using fine Mo powder with an average particle size of 1.5 μm and fine Si powder with an average particle size of 1.5 μm. The method comprises the steps of (a) mixing Mo powder with Si powder with a stoichiometric mixing ratio of 1:2, wherein Si powder is additionally added to the powder mixture according to stoichiometric ratio by 1 to 20 wt.%, (b) moulding the powder ...

Oxide sintered body and sputtering target, and method for producing same

An oxide sintered body which is obtained by mixing and sintering zinc oxide, indium oxide, gallium oxide and tin oxide. The relative density of the oxide sintered body is 85% or more and the average crystal grain size of crystal grains observed on the surface of the oxide sintered body is less than 10 [mu]m. X-ray diffraction of the oxide sintered body shows that a Zn2SnO4 phase and an InGaZnO4 phase are the main phases and that an InGaZn2O5 phase is contained in an amount of 3 volume% or less.

MULTILAYER CERAMIC ELECTRONIC COMPONENT/FILM ELECTRONIC COMPONENT AND ITS MANUFACTURING METHOD

The invention provides a baking method comprising a baking step for multilayer ceramic electronic components such as multilayer piezoelectric ceramic actuators and multilayer piezoelectric ceramic transformers and film-structure electronic components while suppressing cracking in layers and separation of layers due to contraction difference during heating. The inventions relates to a baking method including a baking step for baking a film or a multilayer structural body on a substrate, wherein a centrifugal force is exerted on the film or the interface of the multilayer in a vertical direction to effect pressure-sintering, and the contraction of the film or the interface between layers in a horizontal direction is significantly decreased so as to prevent defects. The intention further relates to a baking method improving the interface adhesion by matching the junction interface and to a film or multilayer structural body and a filmy or multilayer electronic member fabricated by the baking ...

Resonant multilayer ceramic capacitors

Provided is an improved multilayered ceramic capacitor and an electronic device comprising the multilayered ceramic capacitor. The multilayer ceramic capacitor comprises first conductive plates electrically connected to first external terminations and second conductive plates electrically connected to second external terminations. The first conductive plates and second conductive plates form a capacitive couple. A ceramic portion is between the first conductive plates and said second conductive plates wherein the ceramic portion comprises paraelectric ceramic dielectric. The multilayer ceramic capacitor has a rated DC voltage and a rated AC VPPwherein the rated AC VPPis higher than the rated DC voltage.

Ceramic electronic component and method of manufacturing the same

A ceramic electronic component includes a body including a dielectric layer and an internal electrode; and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a plurality of crystal grains and a grain boundary disposed between adjacent crystal grains. A ratio (C2/C1) of an Mg content (C2) of the grain boundary to an Mg content (C1) of at least one of the plurality of crystal grains is 3 or more.

METHOD FOR PREPARING GRAPHENE-CCTO BASED CERAMIC COMPOSITE DIELECTRIC MATERIAL

Provided is a method for preparing a graphene-copper calcium titanate CCTO based ceramic composite dielectric material, which includes: dissolving metal ion sources in respective solvents to obtain respective solutions, and mixing the solutions evenly to obtain a precursor collosol of the CCTO based ceramic; allowing the precursor collosol of the CCTO based ceramic to stand for aging, followed by adding a graphene oxide dispersion to mix with the precursor collosol evenly, drying the resulting mixture to obtain dry precursor powders of the graphene-CCTO based ceramic, which are then grinded into fine powders, followed by irradiating by a low-power laser to obtain graphene-CCTO based ceramic composite powders; and compacting and molding the graphene-CCTO based ceramic composite powders, followed by catalytic synthesis with a high-power laser to obtain the graphene-CCTO based ceramic composite dielectric material.

Fast-densified ceramic matrix composite

A densified ceramic matrix composite (CMC) material densified CMC exhibits superior strength and toughness, relative to prior CMCs The material can be made by a process that includes impregnating a set of ceramic fibers with a non-fibrous ceramic material, resulting in a precursor matrix, stabilizing the precursor matrix, resulting in a stabilized matrix, and densifying the stabilized matrix using a frequency assisted sintering technology (FAST) process, resulting in the densified CMC material.

The optical layer comprising the thermochromic layer having good optical characteristic controlling photonic evaporation and photonic sintering conditions

Centrifugal sintering method and use thereof

This invention provides a process for producing a ceramic sinter or inorganic film which is composed of orientated particles or crystals following anisotropic or crystalline ceramic particles (including one or more types of particles selected from oxides, nitrides, carbides, and borate) or anisotropic crystals have been oriented through sinter centrifugation; products thereof; a process for producing a composite material which can tenaciously bond film or block materials to base surface of a base sample; and a composite material with predetermined functions and properties.

MATERIAL FOR HIGH TEMPERATURES

The present invention relates to a material for use at temperatures exceeding 1200 °C and in oxidizing atmospheres consisting generally of an alloy between a metal, aluminium (Al) and carbon (C) or nitrogen (N). The invention is characterized in that the alloy has a composition MzAlyXw where M essentially consists of titanium (Ti), chromium (Cr) and/or niobium (Nb) and where X is carbon (C) or where X is nitrogen (N) and/or carbon (C) when M is titanium (Ti); and in that z lies in the range of 1.8 to 2.2, y lies in the range of 0.8-1.2 and w lies in the range 0.8-1.2, and wherein a protective oxide layer of Al2O3 is formed after heating to the mentioned temperature.

Preform for the production of a dental prosthesis

The invention relates to a porous preform for the production of a dental prosthesis, said preform comprising a group of agglomerated ceramic, glass-ceramic or glass particles, such that (expressed as volume percent): more than 40% and less than 90% of the particles of the aforementioned group have a size greater than 0.5 µm and less than 3.5 µm, said particles being hereafter referred to as "enamel particles"; and more than 10% and less than 60% of the particles of the group have a size greater than 3.5 µm and less than 5.5 µm, said particles being hereafter referred to as "dentin particles", the Ve/(Ve+Vd) ratio of the volume percent Ve of enamel particles to the volume percent Vd of dentin particles changing continuously along an axis X, known as the "axis of variation".

산화물 소결체 및 스퍼터링 타깃, 및 그 제조 방법

... 산화아연과; 산화인듐과; 산화갈륨과; 산화주석을 혼합 및 소결하여 얻어지는 산화물 소결체. 상기 산화물 소결체의 상대 밀도는 85％ 이상이며, 상기 산화물 소결체의 표면에 있어서 관찰되는 결정립의 평균 결정립경은 10㎛ 미만이다. 상기 산화물 소결체를 X선 회절하였을 때, Zn2SnO4상과 InGaZnO4상이 주상이며, InGaZn2O5상이 3체적％ 이하이다.

그린 가넷 박막의 캐스팅 및 소결을 위한 방법 및 재료

... 본 명세서에는 세라믹 원료 분말 및 전구체 반응물, 결합제, 및 작용성 첨가제를 소결되지 않은 박막으로 캐스팅하는 단계, 및 이어서 제어된 대기 하에 특정 기판 상에 박막을 소결하는 단계에 의해 세라믹 박막을 제조하기 위한 공정 및 재료가 기술된다.

Refractory product having a high zirconia content

The present invention relates to a fused cast refractory product comprising, in percentages by weight on the basis of the oxides and for a total of 100% of the oxides: ZrO2+Hf2O: balance up to 100% 4.5% < SiO2 < 6.0% Al2O3 < 0.80% 0.3% < B2O3 < 1.0% Ta2O5+Nb2O5 < 0.15% Na2O+K2O < 0.1% K2O < 0.04% CaO+SrO+MgO+ZnO+BaO < 0.4% P2O5 < 0.05% Fe2O3+TiO2 < 0.55% other oxide species: < 1.5%, the A/B ratio of the mass contents, Al2O3/B2O3, being between 0.5 and 2.0, the Y2O3 content being less than 0.3%. Application in glass melting furnaces.

METHODS FOR FORMING CERAMIC HONEYCOMB ARTICLES

DISCRETE SOLIDIFICATION OF MELT INFILTRATION

A ceramic matrix composite (CMC) is formed by infiltrating a metal or alloy into a fiber preform in a reactor or furnace that is separated into multiple discrete temperature zones. The gradual cooling of the CMC is controlled, such that upon solidification, a narrow, planar, solidification front is created which allows the expanding metal or alloy to move into a hotter section of the fiber preform, opposed to the surface of the CMC. A discrete solidification front is established that moves through the ceramic matrix composite (CMC) as the composite cools.

Process for in - situ preparation of alumina - (Ti, Zr) borides composite

The present invention relates to an improved process for in-situ preparation of alumina—(Ti,Zr) borides composite. The present invention particularly relates to fast and in-situ process for synthesis and consolidation of Al2O3—Zr/Ti B2 composites of approximate-95% density with controlled grain-growth in the range of less than or the order of 5 micrometer or less grain size using a dynamic Self propagating high temperature synthesis (SHS) process.

Verfahren zum Verbinden von metallischen Teilen mit nichtmetallischen Teilen

Preform for the production of a dental prosthesis

The invention relates to a porous preform for the production of a dental prosthesis, said preform comprising a group of agglomerated ceramic, glass-ceramic or glass particles, such that (expressed as volume percent): more than 40% and less than 90% of the particles of the aforementioned group have a size greater than 0.5 µm and less than 3.5 µm, said particles being hereafter referred to as "enamel particles"; and more than 10% and less than 60% of the particles of the group have a size greater than 3.5 µm and less than 5.5 µm, said particles being hereafter referred to as "dentin particles", the Ve/(Ve+Vd) ratio of the volume percent Ve of enamel particles to the volume percent Vd of dentin particles changing continuously along an axis X, known as the "axis of variation".

Dense composite material, method for producing same, bonded body, and member for semiconductor manufacturing device

The invention provides a dense composite material, a method for producing the same, a bonded body, and a member for a semiconductor manufacturing device. According to the present invention, a dense composite material includes titanium silicide in an amount of 43 to 63 mass %; silicon carbide in an amount less than the mass percentage of the titanium silicide; and titanium carbide in an amount less than the mass percentage of the titanium silicide. In the dense composite material, a maximum value of interparticle distances of the silicon carbide is 40 microns or less, a standard deviation of the interparticle distances is 10 or less, and an open porosity of the dense composite material is 1% or less.

Oxide sintered body and sputtering target, and method for producing same

Mesoporous silica/ceria-silica composite and the preparation method thereof

... 본 발명은 메조다공성 실리카/세리아-실리카 복합체 및 메조다공성 실리카/세리아-실리카의 제조방법에 관한 것으로, 더욱 구체적으로 육방형 또는 입방형 구조의 메조다공성 실리카 및 상기 메조다공성 실리카의 표면 및 기공에 구비된 육방형 구조의 세리아로 이루어지고, 상기 세리아의 산화상태(oxidation state)는 Ce4+ 및 Ce3+인 것을 특징으로 하는 메조다공성 실리카/세리아-실리카 복합체에 관한 것이다.

METHOD FOR LIGHT SINTERING OF CERAMIC FILM

Piezoelectric composition, methods and applications thereof

The present disclosure relates to piezoelectric compositions of Formula I comprising Lead Zirconate—Lead Titanate solid solution. The disclosure further relates to a method of obtaining said composition, method of preparing/fabricating piezoelectric component(s) and piezoelectric component(s)/article(s) obtained thereof. The piezoelectric composition and articles of the present disclosure show excellent electromechanical characteristics along with very large insulation resistance (IR).

REFRACTORY PRODUCT HAVING A HIGH ZIRCONIA CONTENT

AbstractRefractory product having a high zirconia contentThe invention relates to a molten cast refractory product comprising, in weight percentages on the basis of the oxides and relative to a total of 100% of the oxides: Zr02 + Hf20 is the remainder making up 100%,4.5% < Si02 < 6.0%,0.80% Al203 < 1.10%,0.3%<13203<1.5%,Ta205 + Nb205< 0.15%,Na20 + K20 < 0.1%,1(20 <0.04%,Ca0 + Sr() + Mg° + ZnO + Ba0 < 0.4%,P205 < 0.05%,Fe203 + Ti02< 0.55%,and other oxide species < 1.5%,the "A/B" ratio of the Al203 / B203 contents by weight being between 0.75 and 1.6. The invention can be applied to glass melting furnaces.

Refractory product having a high zirconia content

CERAMIC MEMBER, CERAMIC HEATER, SUBSTRATE PLACING MECHANISM, SUBSTRATE PROCESSING APPARATUS AND METHOD FOR MANUFACTURING CERAMIC MEMBER

A wafer placing table (11) constituted as a ceramic heater has a power feeding section (14) for a heat generating body (13) and a bonding section (16) to a supporting member (12) as portions which can be break starting points. The wafer placing table is constituted to permit compressive stress to be generated in the power feeding terminal section (14) and/or the bonding section (16) which can be the break starting points.

POLYCRYSTALLINE ALUMINUM NITRIDE MATERIAL AND METHOD OF PRODUCTION THEREOF

Ceramic molded part production comprises forming molding composition from powdered ceramic and meltable binder, contacting two molding bodies, heating to form a further molding body, and dewaxing and sintering

Ceramic molded part production comprises: forming molding composition from powdered ceramic and meltable binder; molding bodies A and B from the molding composition; contacting the molding bodies; heating the bodies to a temperature above that of the binder but below the decomposition temperature and simultaneous movement to form molding body C; and dewaxing and sintering molding body C in a known manner. Preferred Features: The meltable binder is made from wax. The molding bodies A and B have different chemical and/or physical properties. The movement is carried out by shaking, vibrating or by using ultrasound.

유전체 재료 및 정전 척 장치

... 본 발명의 유전체 재료는, 절연성 재료 중에 도전성 입자를 분산한 복합 소결체로 이루어지는 유전체 재료이며, 주파수 40Hz에 있어서의 유전율은 10 이상, 또한, 이 복합 소결체의 표면 내에서 주파수 1MHz에 있어서의 유전 손실의 최댓값과 최솟값의 차는 0.002 이하이다.

Resonant Multilayer Ceramic Capacitors

Provided is an improved multilayered ceramic capacitor and an electronic device comprising the multilayered ceramic capacitor. The multilayer ceramic capacitor comprises first conductive plates electrically connected to first external terminations and second conductive plates electrically connected to second external terminations. The first conductive plates and second conductive plates form a capacitive couple. A ceramic portion is between the first conductive plates and said second conductive plates wherein the ceramic portion comprises paraelectric ceramic dielectric. The multilayer ceramic capacitor has a rated DC voltage and a rated AC Vwherein the rated AC Vis higher than the rated DC voltage. 1. A multilayer ceramic capacitor comprising:first conductive plates electrically connected to first external terminations and second conductive plates electrically connected to second external terminations wherein said first conductive plates and said second conductive plates form a capacitive couple; anda ceramic portion between said first conductive plates and said second conductive plates wherein said ceramic portion comprises paraelectric ceramic dielectric;{'sub': PP', 'PP, 'wherein said multilayer ceramic capacitor has a rated DC voltage and a rated AC Vwherein said rated AC Vis higher than said rated DC voltage.'}2. The multilayer ceramic capacitor of wherein said rated AC Vis 950 Vto 5700 V.3. The multilayer ceramic capacitor of wherein said paraelectric ceramic dielectric comprises an oxide defined by General Formula A:{'br': None, 'sub': e', 'g', 'j', 'k', 'p', 'q', '3, '(CaSr)(ZrTi)O\u2003\u2003 General Formula A'}wherein:e=0.60 to 1.00;g=0.00 to 0.40;k=0.50 to 0.97;p=0.03 to 0.50; andj/q=0.99 to 1.01.4. The multilayer ceramic capacitor of wherein at least 90 mole % of said ceramic portion is said paraelectric ceramic dielectric defined by General Formula A.5. The multilayer ceramic capacitor of wherein said Ca or Zr are substituted with Ba or Mg.6. The ...

Semiconductor processing apparatus with protective coating including amorphous phase

Embodiments of the invention relate to compositions including a yttrium-based fluoride crystal phase, or a yttrium-based oxyfluoride crystal phase, or an oxyfluoride amorphous phase, or a combination of these materials. The compositions may be used to form a solid substrate for use as a semiconductor processing apparatus, or the compositions may be used to form a coating which is present upon a surface of substrates having a melting point which is higher than about 1600°, substrates such as aluminum oxide, aluminum nitride, quartz, silicon carbide and silicon nitride, by way of example.

METHOD OF MANUFACTURING MULTILAYER CERAMIC CAPACITOR

A method of manufacturing a multilayer ceramic capacitor includes printing an internal electrode pattern on a dielectric layer, forming a dielectric pattern in a region other than a region in which the internal electrode pattern is printed, laminating dielectric layers to form a multilayer body, exposing the internal electrode pattern and the dielectric pattern from a side surface of the multilayer body, removing at least a portion of the exposed dielectric pattern, and forming a dielectric gap layer on the side surface.

Production of oriented material or composite material through centrifugal burning

CEMENTED CARBIDE POWDERS FOR ADDITIVE MANUFACTURING

Cemented carbide powder compositions are provided for use in the production of various articles by one or more additive manufacturing techniques. In one aspect, a powder composition comprises sintered cemented carbide particles having at least a bimodal particle size distribution, wherein sintered cemented carbide particles of a first mode exhibit a D50 particle size of 25 μm to 50 μm, and sintered cemented carbide particles of a second mode exhibit a D50 of less than 10 μm, and the powder composition has an apparent density of 3.5 g/cm3 to 8 g/cm3.

Verfahren zur Herstellung von nicht oxidischen, keramischen Pulvern

Es wird ein Verfahren zur Herstellung eines nicht oxidischen, keramischen Pulvers, umfassend ein Nitrid, ein Karbid, ein Borid oder wenigstens eine MAX-Phase mit der allgemeinen Zusammensetzung MAX, bereitgestellt, mit M = wenigstens ein Element aus der Gruppe der Übergangselemente (Sc, Ti, V, Cr, Zr, Nb, Mo, Hf und Ta), A = wenigstens ein A-Gruppen-Element aus der Gruppe (Si, AI, Ga, Ge, As, Cd, In, Sn, Tl und Pb), X = Kohlenstoff (C) und/oder Stickstoff (N) und/oder Bor (B) und n = 1, 2 oder 3.Erfindungsgemäß werden entsprechende Mengen an elementaren Ausgangsstoffen oder anderen Vorstufen mit wenigstens einem Halogensalz (NZ) vermischt, verpresst (Pellet) und zur Synthese zusammen mit einem Halogensalz (NZ) aufgeheizt.Das verpresste Pellet kann direkt in ein geschmolzenes Halogensalzbad gegeben werden. Alternativ kann das Pellet zunächst mit weiterem Halogensalz ummantelt, erneut verpresst, in einem Salzbad angeordnet und zusammen mit diesem bis oberhalb der Schmelztemperatur des Salzes ...

Refractory product having a high zirconia content

"produto refratário com elevado teor de zircônio".

Refractory product having a high zirconia content

The present invention relates to a fused cast refractory product comprising, in percentages by weight on the basis of the oxides and for a total of 100% of the oxides: ZrO2+Hf2O: balance up to 100% 4.5 % < SiO2 < 6.0% 0.80% Al2O3 < 1.10% 0.3% < B2O3 < 1.5% Ta2O5+Nb2O5 < 0.15% Na2O+K2O < 0.1% K2O < 0.04% CaO+SrO+MgO+ZnO+BaO < 0.4% P2O5 < 0.05% Fe2O3+TiO2 < 0.55% other oxide species: < 1.5%, the A/B ratio of the mass contents, Al2O3/B2O3, being between 0.75 and 1.6, the SnO2+CuO content being less than 0.05%, as a percentage by weight on the basis of the oxides. Application in glass melting furnaces.

METHOD FOR MAKING CERAMIC MATRIX COMPOSITE ARTICLES WITH PROGRESSIVE MELT INFILTRATION

A method of melt infiltrating a green ceramic matrix composite (CMC) article, wherein the green CMC article includes a ceramic reinforcing structure. The method includes heating a localized region of the green CMC article; melting a metal alloy infiltrant to form a molten metal alloy; and introducing the molten metal alloy into the localized region to infiltrate the reinforcing structure of the green CMC article with the metal alloy infiltrant and form the CMC article.

PRODUCTION OF ORIENTED MATERIAL OR COMPOSITE MATERIAL THROUGH CENTRIFUGAL BURNING

Magneto-optic nanocrystalline oxides and methods of forming the same

Rare earth magneto-optical nanocrystalline oxides provide a material that is transparent in the visible range and has a high magnetic response to external magnetic fields. The material can be manufactured using current activated pressure assisted densification (CAPAD). The result is a rare earth magneto-optical nanocrystalline oxide having an average grain size of less than about 100 nm and a Verdet constant greater than or equal to about 300 rad T −1 m −1 for light having a wavelength of about 632.8 nm.

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.

Method of consolidating ultrafine metal carbide and metal boride particles and products made therefrom

Ultrafine metal carbide or metal boride particles are consolidated by a method including sintering at intermediate pressures. A green body comprising the ultrafine metal carbide or metal boride particles may be preheated under vacuum and then pressurized to the intermediate sintering pressure. After sintering, the article may be densified at an intermediate temperature below the sintering temperature, and at an elevated pressure above the intermediate sintering temperature. The resultant consolidated metal carbide or metal boride article may then be cooled and used for such applications as armor panels, abrasion resistant nozzles, and the like.

Flexible ceramic matrix composite structures and methods of forming the same

Methods of forming ceramic matrix composite structures include joining at least two lamina together to form a flexible ceramic matrix composite structure. Ceramic matrix composite structures include at least one region of reduced inter-laminar bonding at a selected location between lamina thereof. Thermal protection systems include at least one seal comprising a ceramic matrix composite material and have at least one region of reduced inter-laminar bonding at a selected location between lamina used to form the seal. Methods of forming thermal protection systems include providing one or more such seals between adjacent panels of a thermal protection system.

Nano-porous precursors for opto-ceramics via novel reactive dissolution

The invention relates to a process for preparing porous glass particles suitable for use as precursor materials for production of an opto-ceramic element. The process comprises: providing particles of a soluble glass composition comprising at least one soluble component, at least one component having low solubility in an aqueous solution, and at least one lasing dopant which also has a low solubility in the aqueous solution; and immersing the particles in an aqueous solution having low solubility for said at least one component and said at least one lasing dopant, to thereby dissolve substantially all of the soluble portions of the glass particles.

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.

Ti3SiC2 BASED MATERIAL, ELECTRODE, SPARK PLUG AND MANUFACTURING METHOD THEREOF

The present invention provides a Ti 3 SiC 2 based material that exhibits excellent arc resistance, an electrode, a spark plug, and methods of manufacturing the same. A Ti 3 SiC 2 based material according to the present invention includes Ti 3 SiC 2 as a main phase, the Ti 3 SiC 2 based material having a TiC content of 0.5 mass % or less and an open porosity of 0.5% or less. It may be preferable that 0 to 30 mol % of Si contained in the main phase Ti 3 SiC 2 be substituted with Al. A spark plug according to the present invention includes an electrode formed using the Ti 3 SiC 2 based material.

Method and device for producing a component of a turbomachine

The invention relates to a method for producing a component ( 10 ) of a turbomachine, especially a structural part of a turbine or a compressor, the method being a generative production method for the layer-by-layer buildup of the component ( 10 ). After production of one or more successive component layers pressure is applied to at least sections of the surface of the most recently produced component layer ( 12 ), the pressure being induced by laser or plasma. The invention further relates to a device for producing a component ( 10 ) of a turbomachine, especially a structural part of a turbine or a compressor, the device ( 26 ) comprising at least one powder feed ( 28 ) for the deposition of at least one powder component material ( 16 ) onto a component platform, at least one radiation source ( 14 ) for a local layer-by-layer fusion or sintering of the component material ( 16 ) and at least one laser radiation source ( 20 ) or at least one plasma impulse source.

Dielectric ceramic composition and ceramic electronic device

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

Composite Material of Electroconductor Having Controlled Coefficient of Thermical Expansion

The present invention relates to a composite material comprising a ceramic component, characterized in that it has a negative coefficient of thermal expansion, and carbon nanofilaments, to its obtainment process and to its uses as electrical conductor in microelectronics, precision optics, aeronautics and aerospace.

Laminate and manufacturing method for same

A layered material 1 includes two metal sheets 2,3 and one ceramic sheet 4 , wherein the metal sheets 2,3 and the ceramic sheet 4 are stacked so that the ceramic sheet 4 is disposed between the two metal sheets 2,3 , and then bonded together through spark plasma sintering. The difference in melting temperature between the metal sheets 2 and 3 is 140° C. or less. The layered material 1 is produced by stacking two metallic sheets 2,3 that have a difference in melting temperature of 140° C. or less and the ceramic sheet 4 so that the ceramic sheet 4 is placed between the both metal sheets 2,3 , then disposing the stacked structure of the metal sheet 2,3 and the ceramic sheet 4 between a pair of electrodes in a spark plasma sintering device, and bonding the metal sheets 2,3 and the ceramic sheet 4 by applying a pulse current between the electrodes while maintaining the conduction between the electrodes.

Nanostructured dielectric materials for high energy density multilayer ceramic capacitors

A multilayer ceramic capacitor, having a plurality of electrode layers and a plurality of substantially titanium dioxide dielectric layers, wherein each respective titanium dioxide dielectric layer is substantially free of porosity, wherein each respective substantially titanium dioxide dielectric layer is positioned between two respective electrode layers, wherein each respective substantially titanium dioxide dielectric layer has an average grain size of between about 200 and about 400 nanometers, wherein each respective substantially titanium dioxide dielectric layer has maximum particle size of less than about 500 nanometers. Typically, each respective substantially titanium dioxide dielectric layer further includes at least one dopant selected from the group including P, V, Nb, Ta, Mo, W, and combinations thereof, and the included dopant is typically present in amounts of less than about 0.01 atomic percent.

Oriented Perovskite Oxide Thin Film

A thin film which comprises an organic metal salt or an an alkoxide salt or an amorphous thin film is formed on a substrate, wherein each of the thin films enables the formation of a Dion-Jacobson perovskite-type metal oxide represented by the composition formula A(B n−1 M n O 3n+1 ) (wherein n is a natural number of 2 or greater; A represents one or more monovalent cations selected from Na, K, Rb and Cs; B comprises one or more components selected from a trivalent rare earth ion, Bi, a divalent alkaline earth metal ion and a monovalent alkali metal ion; and M comprises one or more of Nb and Ta; wherein a solid solution may be formed with Ti and Zr) on a non-oriented substrate. The resulting product is maintained at the temperature between room temperature and 600° C.; and crystallization is achieved while irradiating the amorphous thin film or the thin film comprising the organic metal salt or the alkoxide salt on the substrate with ultraviolet light such as ultraviolet laser. In this manner, it becomes possible to produce an oriented Dion-Jacobson perovskite-type oxide thin film characterized in that thin film can be oriented on the substrate in a (001) direction.

Corrugated carbon fiber preform

In one example, a method includes mixing a plurality of carbon fibers in a liquid carrier to form a mixture, depositing the carbon fiber mixture in a layer, forming a plurality of corrugations in the carbon fiber layer, and rigidifying the corrugated carbon fiber layer to form a corrugated carbon fiber preform. In another example, a method includes substantially aligning a first ridge on a first surface of a first corrugated carbon fiber preform and a first groove on a first surface of a second corrugated carbon fiber preform, bringing the first surface of the first corrugated carbon fiber preform into contact with the first surface of the second corrugated carbon fiber preform, and densifying the first corrugated carbon fiber preform and the second carbon fiber preform to bond the first corrugated carbon fiber preform and the second carbon fiber preform.

Method for fabricating a ceramic material

A method for fabricating a ceramic material includes impregnating a porous structure with a mixture that includes a preceramic polymer and a filler. The filler includes at least one free metal. The preceramic polymer material is then rigidized to form a green body. The green body is then thermally treated to convert the rigidized preceramic polymer material into a ceramic matrix located within pores of the porous structure. The same thermal treatment or a second, further thermal treatment is used to cause the at least one free metal to move to internal porosity defined by the ceramic matrix or pores of the porous structure.

Structured Layers Composed of Crosslinked or Crosslinkable Metal-Organic Compounds, Shaped Bodies Containing Them as well as Processes for Producing Them

The invention relates to a process for producing a structured shaped body or a layer of this type from a precursor of a metal oxide or mixed oxide selected from among magnesium, strontium, barium, aluminum, gallium, indium, silicon, tin, lead and the transition metals.

Refractory metal ceramics and methods of making thereof

A composition having nanoparticles of a refractory-metal carbide or refractory-metal nitride and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising a metal component and an organic component. The metal component is nanoparticles or particles of a refractory metal or a refractory-metal compound capable of decomposing into refractory metal nanoparticles. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining particles of a refractory metal or a refractory-metal compound capable of reacting or decomposing into refractory-metal nanoparticles with an organic compound having a char yield of at least 60% by weight to form a precursor mixture.

Nano-structured refractory metals, metal carbides, and coatings and parts fabricated therefrom

Refractory metal and refractory metal carbide nanoparticle mixtures and methods for making the same are provided. The nanoparticle mixtures can be painted onto a surface to be coated and heated at low temperatures to form a gas-tight coating. The low temperature formation of refractory metal and refractory metal carbide coatings allows these coatings to be provided on surfaces that would otherwise be uncoatable or very difficult to coat, whether because they are carbon-based materials (e.g., graphite, carbon/carbon composites) or temperature sensitive materials (e.g., materials that would melt, oxidize, or otherwise not withstand temperatures above 800° C.), or because the high aspect ratio of the surface would prevent other coating methods from being effective (e.g., the inner surfaces of tubes and nozzles). The nanoparticle mixtures can also be disposed in a mold and sintered to form fully dense components.

Sputtering target and manufacturing method thereof, and transistor

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

Alumina sintered body, abrasive grains, and grindstone

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

Alumina sintered body, abrasive grains, and grindstone

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

Porous, silicate, ceramic body, dental restoration and method for the production thereof

The present invention relates to a porous, silicate, ceramic body, possibly with different colors, with a first density, which can be sintered into a silicate, ceramic body with a second density, wherein the ratio of the first density to the second density is 2/5 to 98/100, and the three-point bending strength of the porous, silicate ceramic body with a first density, measured according to ISO 6872, amounts to 25 to 180 MPa.

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

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

Method for producing silicon carbide-carbon composite

Provided is a novel method for producing a silicon carbide-carbon composite. A green body containing a carbonaceous material 2 having silicon nitride attached to a surface thereof is fired to obtain a silicon carbide-carbon composite 1.

Additive manufacturing material for powder rapid prototyping manufacturing

A molding material is provided which, despite containing a ceramic, enables efficient molding for producing high-density molded articles. The present invention provides a molding material to be used in powder laminate molding. This molding material contains a first powder which contains a ceramic, and a second powder which contains a metal. Further, the first powder and the second powder configure granulated particles. Ideally, the ratio of the content of the second powder to the total content of the first powder and the second powder is greater than 10 mass % and less than 90 mass %.

Synthesis and Processing of Ultra High Hardness Boron Carbide

A super-hard material is a late transition metal doped BC ceramic. The lightweight ceramics can display Vickers Hardness in excess of 45 GPa. Transition metals, such as Ni, Co, Rh, and Pd can be doped into the boron carbide at levels up to about 2.5%. A spark plasma sintering (SPS) of an evacuated powder of BC and the transition metal at temperatures up to 2000° C., and pressures of up to about 100 GPa forms a super-hard material as a body. The late transition metal doped BC ceramic can be used for armor, grinding materials, thermoelectric materials, and catalysts. 1. A super-hard material , comprising a late transition metal doped boron carbide , wherein the Vickers Hardness is greater than 35 GPa.2. The super-hard material of claim 1 , wherein the boron carbide is BC.3. The super-hard material of claim 1 , wherein the late transition metal is Ni claim 1 , Co claim 1 , Rh or Pd.4. The super-hard material of claim 1 , wherein the late transition metal is 0.5 to 2 atom %.5. The super-hard material of claim 1 , wherein the late transition metal is Ni at 1 atom %.6. The super-hard material of claim 1 , wherein the Vickers Hardness is greater than 45 GPa.7. A method for preparing a super-hard material comprises:{'sub': '4', 'preparing a mixture of a late transition metal and BC powder;'}loading a die assembly with the powder;placing said die assembly in a sintering chamber of a spark plasma sintering (SPS) apparatus;evacuating the chamber; andapplying a pulsed current, pressure, and heat.8. The method of claim 7 , wherein the late transition metal is Ni claim 7 , Co claim 7 , Rh or Pd.9. The method of claim 7 , wherein the late transition metal is 0.5 to 2 atom % of the mixture.10. The method of claim 7 , wherein the sintering chamber is evacuated to 40 Pa or less.11. The method of claim 7 , wherein heating is to 1 claim 7 ,000 to 2 claim 7 ,000° C.12. The method of claim 7 , wherein the maximum pressure is 100 GPa.13. An armor component claim 7 , comprising a late ...

Selective area coating sintering

The present disclosure is directed to a variable sintered coating or a variable microstructure coating as well as an apparatus and method of making such a variable coating onto substrates. The substrate has some electrical conductivity and is used as one electrode while an ionized gas is used as the other electrode that is moved over the areas of the powder coating to be sintered. An electrical current is used to cause a plasma produced through the gas, resulting in a combined energy and temperature profile sufficient for powder-powder and powder-substrate bonding. This preferred method is referred to as “flame-assisted flash sintering” (FAFS). 1. A method of manufacturing a coated area with variable amounts of sintering , the method comprising:a) providing a substrate having an exposed first surface,b) disposing powder onto said first surface of said substrate to form a powder layerd) providing a gas capable of creating an electric plasma,e) providing a conduit capable of dispensing said plasma generating gas toward said powder layer on said substrate,f) creating a gas flow that closely enough connects a first electrode to the plasma generating gas so that a high voltage current can pass through the gas and powder layer to said substrate, which is at a second electrical potential,g) electrically energizing said electrode causing a current flow through said gas and the powder layer,h) wherein said electrical potential enhances the powder sintering and creates a net electrical flow of at least 1 mA, andi) consolidating said powder on said substrate in said current flow area,2. A device for sintering a powder coating on to a substrate comprising:a) at least one gas source capable of supplying an ionizing gasb) a gas delivery means, capable of delivering at least one gas to or close to at least one electrodec) said electrode capable of producing an electric current sufficient through the gas to produce a plasmad) an electrical circuit configured to flow current through ...

POROUS PLATE-SHAPED FILLER

Provided is a porous plate-shaped filler that can be used as a material for a heat-insulation film having excellent heat insulation performance. In a porous plate-shaped filler having a plate shape, an aspect ratio is 3 or higher, a minimum length is 0.5 to 50 μm, and an overall porosity is 20 to 90%, and the porosity is lower in the circumferential part than in the center part. When this porous plate-shaped filler of the present invention is contained in a heat-insulation film, the infiltration of a matrix into the filler is reduced, and thus the thermal conductivity can be lowered. Therefore, even a thin heat-insulation film can have a greater heat-insulation effect than before. 1. A porous plate-shaped filler having a plate shape with an aspect ratio of 3 or higher , a minimum length of 0.5 to 50 μm , and an overall porosity of 20 to 90% , wherein the porosity is lower in the circumferential part than in the center part.2. The porous plate-shaped filler according to claim 1 , wherein the center part and the circumferential part have the same type of material for a base material.3. The porous plate-shaped filler according to claim 1 , wherein the center part and the circumferential part have a different type of material for a base material.4. The porous plate-shaped filler according to claim 1 , wherein the type of material of the circumferential part contains at least one of a fluororesin claim 1 , a silicone resin claim 1 , a polyimide resin claim 1 , a polyamide resin claim 1 , an acrylic resin claim 1 , and an epoxy resin.5. The porous plate-shaped filler according to claim 1 , wherein the circumferential part has a porosity which is lower by 10% or more than the center part.6. The porous plate-shaped filler according to claim 1 , wherein the average pore diameter is smaller in the circumferential part than in the center part.7. The porous plate-shaped filler according to claim 1 , wherein the average pore diameter of the circumferential part is 0.1 μm or less ...

Method of Joining Metal-Ceramic Substrates to Metal Bodies

A method of joining a metal-ceramic substrate having metalization on at least one side to a metal body by using a metal alloy is disclosed. The metal body has a thickness of less than 1.0 mm, and the metal alloy contains aluminum and has a liquidus temperature of greater than 450° C. The resulting metal-ceramic module provides a strong bond between the metal body and the ceramic substrate. The resulting module is useful as a circuit carrier in electronic appliances, with the metal body preferably functioning as a cooling body. 112-. (canceled)13. A module comprising:a metal-ceramic substrate having metalization on at least one side, wherein the metal-ceramic substrate is adapted to have a semiconductor component disposed on at least one metalized side of the metal-ceramic substrate, and wherein the metal-ceramic substrate includes a ceramic substrate and no more than two metal layers each of which directly contacts the ceramic substrate;a metal body having a thickness of less than 1 mm; anda joining region joining the ceramic substrate to the metal body, the joining region including a metal alloy containing aluminum and having a liquidus temperature of greater than 450° C.14. The module of claim 13 , wherein the peeling force required for separating the metal-ceramic substrate from the metal body is greater than 3 N/mm.15. The module of used as a circuit carrier in an electronic appliance.16. The module of claim 13 , wherein a surface of the metal-ceramic substrate that contacts the metal alloy has a first surface area claim 13 , wherein a surface of the metal body that contacts the metal alloy has a second surface area claim 13 , and wherein the first surface area is smaller than the second surface area.17. The module of claim 13 , wherein the metal alloy further comprises silicon.18. The module of claim 13 , wherein the metal alloy further comprises magnesium.19. The module of claim 13 , wherein based on the total weight of the metal alloy claim 13 , the metal ...

METHOD FOR FABRICATING A CERAMIC MATERIAL

A method for fabricating a ceramic material includes impregnating a porous structure with a mixture that includes a preceramic polymer and a filler. The filler includes at least one free metal. The preceramic polymer material is then rigidized to form a green body. The green body is then thermally treated to convert the rigidized preceramic polymer material into a ceramic matrix located within pores of the porous structure. The same thermal treatment or a second, further thermal treatment is used to cause the at least one free metal to move to internal porosity defined by the ceramic matrix or pores of the porous structure. 1. A method for fabricating a ceramic material , the method comprising:infiltrating a porous structure with a mixture that includes a preceramic material and a filler, the filler including at least one free metal;rigidizing the preceramic material to form a green body; andthermally treating the green body to convert the rigidized preceramic material into a ceramic matrix within pores of the porous structure, wherein the thermal treatment or a second, further thermal treatment is used to cause the at least one free metal to move to internal porosity defined by the ceramic matrix or residual open pores of the porous structure.2. The method as recited in claim 1 , wherein the porous structure comprises a fibrous structure.3. The method as recited in claim 1 , wherein the at least one free metal comprises silicon.4. The method as recited in claim 1 , wherein the at least one free metal is selected from a group consisting of boron claim 1 , titanium claim 1 , vanadium claim 1 , chromium claim 1 , zirconium claim 1 , niobium claim 1 , molybdenum claim 1 , ruthenium claim 1 , rhodium claim 1 , hafnium claim 1 , tantalum claim 1 , tungsten claim 1 , rhenium claim 1 , osmium claim 1 , iridium and combinations thereof.5. The method as recited in claim 1 , wherein the filler includes ceramic particles coated with the at least one free metal.6. The method as ...

OXIDE SINTERED BODY AND TRANSPARENT CONDUCTIVE OXIDE FILM

An oxide sintered body containing indium, hafnium, tantalum, and oxygen as constituent elements, in which when indium, hafnium, and tantalum are designated as In, Hf, and Ta, respectively, the atomic ratio of Hf/(In+Hf+Ta) is equal to 0.002 to 0.030, and the atomic ratio of Ta/(In+Hf+Ta) is equal to 0.0002 to 0.013. 1. A transparent conductive oxide film , comprising:an oxide including indium, hafnium, tantalum, and oxygen as constituent elements,wherein the oxide satisfies that an atomic ratio of Hf/(In+Hf+Ta) is equal to 0.002 to 0.030, and that an atomic ratio of Ta/(In+Hf+Ta) is equal to 0.0002 to 0.013, where In, Hf and Ta are indium, hafnium, and tantalum, respectively.2. The transparent conductive oxide film according to claim 1 , wherein the atomic ratio of Hf/(In+Hf+Ta) is equal to 0.005 to 0.025.3. The transparent conductive oxide film according to claim 1 , wherein the atomic ratio of Hf/(In+Hf+Ta) is equal to 0.007 to 0.021.4. The transparent conductive oxide film according to claim 1 , wherein the atomic ratio of Ta/(In+Hf+Ta) is equal to 0.001 to 0.010.5. The transparent conductive oxide film according to claim 1 , wherein the atomic ratio of Ta/(In+Hf+Ta) is equal to 0.003 to 0.010.6. The transparent conductive oxide film according to claim 1 , wherein the atomic ratio of Hf/(In+Hf+Ta) is equal to 0.005 to 0.025 claim 1 , and the atomic ratio of Ta/(In+Hf+Ta) is equal to 0.001 to 0.010. The present application is a divisional of and claims the benefit of priority to U.S. application Ser. No. 16/078,488, filed Aug. 21, 2018, which is the National Stage of the International Patent Application No. PCT/JP2017/006045, filed Feb. 20, 2017, which is based upon and claims the benefit of priority to Japanese Patent Application Nos. 2016-031403, filed Feb. 22, 2016, and 2016-223540, filed Nov. 16, 2016. The entire contents of all of the above applications are incorporated herein by reference.The present invention relates to an oxide sintered body, a sputtering ...

ELECTRONIC COMPONENT

A multilayer ceramic capacitor includes a multilayer body including dielectric layers and internal electrode layers laminated alternately on each other, and external electrode layers provided on opposing end surfaces of the multilayer body in a length direction orthogonal or substantially orthogonal to a lamination direction, and each connected with the internal electrode layers, in which the dielectric layers each include at least one of Ca, Zr, or Ti, the internal electrode layers each include Cu, and when a dimension in the lamination direction of the multilayer body is defined as T0, a dimension in the length direction of the multilayer body is defined as L0, and a dimension in a width direction orthogonal or substantially orthogonal to the lamination direction and the length direction is defined as W0, a relationship of L0 Подробнее

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

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

ZIRCONIA PRE-SINTERED BODY SUITABLE FOR DENTAL USE

The present invention provides a zirconia pre-sintered body that can be fired into a sintered body having translucency and strength suited for dental use (particularly, at the dental clinic), even with a short firing time. The present invention relates to a zirconia pre-sintered body comprising: zirconia; and a stabilizer capable of inhibiting a phase transformation of zirconia, wherein the zirconia predominantly comprises a monoclinic crystal system, and the zirconia pre-sintered body comprises a plurality of layers that differ from each other in the content of the stabilizer relative to the total mole of the zirconia and the stabilizer. 1. A zirconia pre-sintered body comprising:zirconia; anda stabilizer capable of inhibiting a phase transformation of zirconia,wherein the zirconia predominantly comprises a monoclinic crystal system, andthe zirconia pre-sintered body comprises a plurality of layers that differ from each other in a content of the stabilizer relative to a total mole of the zirconia and the stabilizer.2. The zirconia pre-sintered body according to claim 1 , wherein the monoclinic crystal system accounts for at least 55% of the zirconia.3. The zirconia pre-sintered body according to claim 1 , wherein the monoclinic crystal system accounts for at least 75% of the zirconia.4. The zirconia pre-sintered body according to claim 1 , wherein at least a part of the stabilizer is undissolved in the zirconia as a solid solution.5. The zirconia pre-sintered body according to claim 1 , wherein claim 1 , on a straight line extending along a first direction from one end to the other end of the zirconia pre-sintered body claim 1 , the content of the stabilizer relative to the total mole of the zirconia and the stabilizer shows unchanging patterns of increase and decrease from the one end toward the other end.67-. (canceled)8. The zirconia pre-sintered body according to claim 1 , wherein the stabilizer is yttria.9. The zirconia pre-sintered body according to claim 8 , ...

Gas nozzle, manufacturing method of gas nozzle, and plasma treatment device

A gas nozzle according to the present disclosure includes a supply hole having a tubular shape and configured to guide a gas and an injection hole connecting to the supply hole. The gas nozzle configured to inject the gas from the injection hole is made from ceramics or single crystal including an oxide, a fluoride, or an oxyfluoride of a rare earth element or an yttrium aluminum composite oxide as a primary component. An arithmetic mean roughness Ra of an inner circumferential surface forming the supply hole is smaller on an outflow side than on an inflow side of the gas.

Systems and Methods for Enabling Communication Between USB Type-C Connections and Legacy Connections Over an Extension Medium

Techniques for supporting USB and video communication over an extension medium are provided. In some embodiments, an upstream facing port device (UFP device) is coupled to legacy connectors of a host device, and a downstream facing port device (DFP device) is coupled to a USB Type-C receptacle of the sink device that may provide both USB and DisplayPort information. The UFP device and DFP device communicate to properly configure the USB Type-C connection for use in the extension environment. In some embodiments, a source device is coupled to the UFP device via a USB Type-C connection, and legacy video and USB devices are coupled to the DFP device. The UFP device and DFP device again communicate to cause the source device to properly configure the USB Type-C connection for use in the extension environment.

METHOD FOR PREPARING A MATERIAL MADE FROM ALUMINOSILICATE AND METHOD FOR PREPARING A COMPOSITE MATERIAL HAVING AN ALUMINOSILICATE MATRIX

The invention relates to a method for preparing a material based on an aluminosilicate selected from barium aluminosilicate BAS, barium-strontium aluminosilicate BSAS, and strontium aluminosilicate SAS, said aluminosilicate consisting of aluminosilicate with a hexagonal structure, characterised in that it includes a single sintering step in which a mixture of powders of precursors of said aluminosilicate, including an aluminium hydroxide Al(OH)powder, are sintered by a hot-sintering technique with a pulsed electric field SPS; whereby a material based on an aluminosilicate, said aluminosilicate consisting of an aluminosilicate with a hexagonal structure is obtained. The material based on an aluminosilicate prepared by said method can be used in a method for preparing a composite material consisting of an aluminosilicate matrix reinforced by reinforcements made of metalloid or metal oxide. 1. A method for preparing a material based on an aluminosilicate selected from among barium aluminosilicate BAS , barium and strontium aluminosilicate BSAS , and strontium aluminosilicate SAS , said aluminosilicate consisting of aluminosilicate with a hexagonal structure , the method comprising a single sintering step wherein the sintering of a mixture of powders of precursors of said aluminosilicate , comprising an aluminum hydroxide powder Al(OH)is carried out , by a hot sintering technique with a pulsed electric field SPS; whereby a material based on an aluminosilicate , said aluminosilicate consisting of aluminosilicate with a hexagonal structure , is obtained.2. The method according to claim 1 , wherein the powders of precursors other than the aluminium hydroxide powder Al(OH)are selected from the group consisting of powders of barium carbonate BaCO claim 1 , powders of silica SiO claim 1 , and powders of strontium carbonate.3. The method according to claim 2 , wherein the aluminosilicate is barium aluminosilicate BAS claim 2 , and the mixture of the powders of precursors ...

ALUMINUM NITRIDE PARTICLES

Aluminum nitride particles used as a material of an aluminum nitride sintered compact are disclosed. The aluminum nitride particles may have a same crystal orientation. The aluminum nitride particles each have an aspect ratio of 3 or more, a plate-like shape, a planar length of 0.6 μm or more and 20 μm or less, and a thickness length of 0.05 μm or more and 2 μm or less. 1. Aluminum nitride particles used as a material of an aluminum nitride sintered compact , whereinthe aluminum nitride particles have a same crystal orientation, andthe aluminum nitride particles each have an aspect ratio of 3 or more; a plate-like shape; a planar length of 0.6 μm or more and 20 μm or less; and a thickness length of 0.05 μm or more and 2 μm or less.2. The aluminum nitride particles according to claim 1 , wherein a surface area is 0.4 m/g or more and 16 m/g or less.3. The aluminum nitride particles according to claim 2 , wherein a metal impurity concentration in the particles is 0.2 mass % or less.4. The aluminum nitride particle according to claim 3 , wherein an oxygen concentration in the particles is 2 mass % or less.5. The aluminum nitride particles according to claim 1 , wherein a metal impurity concentration in the particles is 0.2 mass % or less.6. The aluminum nitride particle according to claim 1 , wherein an oxygen concentration in the particles is 2 mass % or less.7. The aluminum nitride particle according to claim 2 , wherein an oxygen concentration in the particles is 2 mass % or less.8. The aluminum nitride particle according to claim 5 , wherein an oxygen concentration in the particles is 2 mass % or less. The disclosure herein discloses art related to aluminum nitride particles. Especially, the disclosure herein discloses art related to aluminum nitride particles used as a material of an aluminum nitride sintered compact.Aluminum nitride particles having a high aspect ratio (planar length L/thickness length D) are described in International Publication No. WO2014/ ...

DIELECTRIC COMPOSITION AND MULTILAYER CERAMIC ELECTRONIC COMPONENT

A dielectric composition includes dielectric particles. At least one of the dielectric particles include a main phase and a secondary phase. The main phase has a main component of barium titanate. The secondary phase exists inside the main phase and has a higher barium content than the main phase. 1. A dielectric composition comprising dielectric particles , wherein at least one of the dielectric particles include:a main phase having a main component of barium titanate; anda secondary phase existing inside the main phase and having a higher barium content than the main phase.2. The dielectric composition according to claim 1 , wherein the secondary phase has a particle size of 10 nm or more and 100 nm or less.3. The dielectric composition according to claim 1 , wherein a ratio (Ba/Ti) of a barium element content to a titanium element content in the secondary phase is 1.2-2.0.4. The dielectric composition according to claim 1 , wherein an area ratio occupied by the dielectric particles each including the secondary phase in a cross section of the dielectric composition is 30-80%.5. The dielectric composition according to claim 1 , whereinthe dielectric particles include large particles having a circle equivalent diameter of 0.5 μm or more and small particles having a circle equivalent diameter of less than 0.5 μm, andthe secondary phase exists inside the main phase of the large particles.6. The dielectric composition according to claim 5 , wherein a ratio of an area occupied by the large particles each including the secondary phase to an area occupied by the large particles in a cross section of the dielectric composition is 50% or more.7. The dielectric composition according to claim 5 , wherein a ratio of an area occupied by the large particles in a cross section of the dielectric composition is 50-90%.8. The dielectric composition according to claim 6 , wherein a ratio of the area occupied by the large particles in the cross section of the dielectric composition is ...

METHOD FOR MATERIAL ADDITIVE MANUFACTURING OF AN INORGANIC FILTER SUPPORT AND RESULTING MEMBRANE

The present invention relates to a method for manufacturing at least one monolithic inorganic porous support () having a porosity comprised between 10% and 60% and an average pore diameter ranging from 0.5 μm to 50 μm, using a 3D printer type machine (I) to build, in accordance with a 3D digital model, a manipulable three-dimensional raw structure () intended to form, after sintering, the monolithic inorganic porous support(s) (). 11657421. A method for manufacturing monolithic inorganic porous support () having a porosity comprised between 10% and 60% and an average pore diameter ranging from 0.5 μm to 50 μm , using a 3D printing machine (I) including an extrusion head () movably mounted in space relative to and above a fixed horizontal plate () , said 3D printing machine allowing the deposition of a string () of inorganic composition () to build , from a 3D digital model (M) , a manipulable three-dimensional raw structure () intended to form the monolithic inorganic porous support(s) () , the method consisting of:{'b': '4', 'having the inorganic composition () including a powdery solid inorganic phase in the form of particles with an average diameter comprised between 0.1 μm and 150 μm, and a matrix,'}{'b': 6', '4', '7, 'sub': 'i,j', 'supplying the extrusion head () of the 3D printing machine (I) with the inorganic composition () and causing its extrusion to form the string (),'}{'b': 7', '5', '2, 'sub': 'i,j', 'building, using said string () on said horizontal plate (), the manipulable three-dimensional raw structure () in accordance with the 3D digital model (M),'}{'b': 2', '7, 'sub': 'i,j', 'accelerating the consolidation of the manipulable three-dimensional raw structure () in accordance with the 3D digital model (M) as the string () is extruded,'}{'b': '2', 'placing this manipulable three-dimensional raw structure () in a heat treatment furnace in order to carry out a sintering operation at a temperature comprised between 0.5 and 1 time the melting ...

METHOD FOR CLOSED PORE CERAMIC

A method includes forming a ceramic member that has a plurality of closed pores within a ceramic matrix. The forming includes compacting a ceramic powder to form intra-particle pores between particles of the ceramic powder, and sintering the compacted ceramic powder to cause diffusion of the ceramic powder and formation of the ceramic matrix. The diffusion does not fill the intra-particle pores and leaves the closed pores. 1. A method comprising: compacting a ceramic powder to form intra-particle pores between particles of the ceramic powder, and', 'sintering the compacted ceramic powder to cause diffusion of the ceramic powder and formation of the ceramic matrix, wherein the diffusion does not fill the intra-particle pores and leaves the closed pores., 'forming a ceramic member that has a plurality of closed pores within a ceramic matrix, wherein the forming includes'}2. The method as recited in claim 1 , wherein the compacting compacts the ceramic powder to 40% to 60% theoretical density.3. The method as recited in claim 2 , wherein the compacting compacts the ceramic powder to about 50% theoretical density.4. The method as recited in claim 2 , wherein the ceramic matrix includes at least one of yttria stabilized zirconia claim 2 , zirconia claim 2 , hafnia claim 2 , gadolinia claim 2 , molybdenum disulphide claim 2 , alumina claim 2 , or mullite.5. The method as recited in claim 1 , wherein the ceramic member has 20 vol % to 80 vol % of the closed pores.6. The method as recited in claim 1 , wherein the ceramic member has 33 vol % to 66 vol % of the closed pores.7. The method as recited in claim 6 , wherein the ceramic matrix includes at least one of zirconia claim 6 , hafnia claim 6 , or gadolinia.8. The method as recited in claim 7 , wherein the sintering is partial sintering such that the ceramic powder is less than 100% sintered in the final ceramic member.9. The method as recited in claim 7 , wherein the sintering is partial sintering prior to the ceramic ...

METHOD AND APPARATUS FOR OXIDATION OF TWO-DIMENSIONAL MATERIALS

In accordance with an example embodiment of the present invention, a method is disclosed. The method comprises providing a two-dimensional object comprising a lll-V group material, e.g. Boron nitride (BN), Boron carbon nitride (BCN), Aluminium nitride (AIN), Gallium nitride (GaN), Indium Nitride (InN), Indium phosphide (InP), Indium arsenide (InAs), Boron phosphide (BP), Boron arsenide (BAs), and Gallium phosphide (GaP) and/or a Transition Metal Dichalcogenides (TMD) group material, e.g Molybdenum sulfide (MoS2), Molybdenum diselenide (MoSe2), Tungsten sulfide (WS2), Tungsten diselenide (WSe2), Niobium sulfide (NbS2), Vanadium sulfide (VS2,), and Tantalum sulfide (TaS2) into an environment comprising oxygen; and exposing at least one part of the two-dimensional object to photonic irradiation in said environment, thereby oxidizing at least part of the material of the exposed part of the two-dimensional object. 120-. (canceled)21. A method , comprising:providing a two-dimensional object comprising a III-V group material and/or a Transition Metal Dichalcogenides (TMD) group material into an environment comprising oxygen; andexposing at least one part of the two-dimensional object to photonic irradiation in said environment, thereby oxidizing at least part of the material of the exposed part of the two-dimensional object.22. The method of claim 21 , further comprising:providing a substrate, andprior to providing the two-dimensional object into an environment comprising oxygen, depositing the III-V group material and/or the TMD group material onto the substrate, thereby forming the two-dimensional object comprising the III-V group material and/or the Transition Metal Dichalcogenides (TMD) group material.23. The method of claim 22 , wherein depositing the III-V group material and/or the TMD group material onto the substrate is performed by at least one of the following techniques: spray coating claim 22 , spin-coating claim 22 , drop-coating claim 22 , thin film transfer ...

MO-DOPED COZZ-TYPE FERRITE COMPOSITE MATERIAL FOR USE ULTRA-HIGH FREQUENCY

A CoZ hexaferrite composition is provided containing molybdenum and one or both of barium and strontium, having the formula (BaSrCo)MoFeOwhere x=0.01 to 0.20; y=20 to 24; and z=0 to 3. The composition can exhibit high permeabilities and equal or substantially equal values of permeability and permittivity while retaining low magnetic and dielectric loss tangents and loss factors. The composition is suitable for high frequency applications such as ultrahigh frequency and microwave antennas and other devices. 2. The hexaferrite composition of claim 1 , wherein x=0.08 to 0.15.3. The hexaferrite composition of claim 1 , wherein x=0.10 to 0.12.4. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permeability at least 3.0 over a frequency range of 0.1 to 3.0 GHz.5. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permeability at least 7.0 over a frequency range of 0.1 to 3.0 GHz.6. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permeability ranging from 7.0 to 12.0 over a frequency range of 0.1 to 3.0 GHz.7. The hexaferrite composition of claim 1 , wherein z=1.2 to 3.0 claim 1 , and the hexaferrite composition has a real permeability ranging from 8.0 to 12.0 over a frequency range of about 0.1 GHz to at least 1.0 GHz.8. The hexaferrite composition of claim 1 , wherein z=0 to 0.5 claim 1 , and the hexaferrite composition has a real permeability ranging from 2.0 to 4.0 over a frequency range of about 0.1 GHz to about 3.0 GHz.9. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permittivity at least 6.0 over a frequency range of 0.1 to 3.0 GHz.10. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permittivity at least 8.0 over a frequency range of 0.1 to 3.0 GHz.11. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permittivity ranging from 6.0 to ...

THERMALLY CONDUCTIVE COMPOSITE PARTICLES, METHOD FOR PRODUCING SAME, INSULATING RESIN COMPOSITION, INSULATING RESIN MOLDED BODY, LAMINATE FOR CIRCUIT BOARDS, METAL BASE CIRCUIT BOARD AND POWER MODULE

A thermally conductive composite particle, including: a core portion including an inorganic particle; and a shell portion including a nitride particle and covering the core portion, is provided. The thermally conductive composite particle is a sintered body. 1. A thermally conductive composite particle as a sintered body , comprising:a core portion including an inorganic particle; anda shell portion including a nitride particle and covering the core portion.2. The thermally conductive composite particle according to claim 1 , including at least boron nitride or silicon nitride as the nitride particle.3. The thermally conductive composite particle according to claim 1 , wherein at least part of the shell portion is layered claim 1 , and covers at least part of the core portion along a shape of the core portion.4. The thermally conductive composite particle according to claim 1 , wherein the shell portion is a sintered member of a mixture including the nitride particle and a sintering aid claim 1 , and the shell portion includes an atom derived from the sintering aid.5. The thermally conductive composite particle according to claim 4 , wherein the sintering aid is at least one selected from YO claim 4 , CeO claim 4 , LaO claim 4 , YbO claim 4 , TiO claim 4 , ZrO claim 4 , FeO claim 4 , MoO claim 4 , MgO claim 4 , AlO claim 4 , CaO claim 4 , BC claim 4 , or B.6. The thermally conductive composite particle according to claim 4 , wherein part of the atoms derived from the sintering aid is unevenly distributed on a surface of the core portion.7. The thermally conductive composite particle according to claim 4 , wherein the shell portion includes at least yttrium as the atom derived from the sintering aid.8. The thermally conductive composite particle according to claim 4 , wherein a total volume of the nitride particle and the sintering aid with respect to a total volume of the inorganic particle claim 4 , the nitride particle claim 4 , and the sintering aid is 30% by ...

Manufacturing method of ceramic powder

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

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 and apparatus for pyrolyzing an electrode

An electrode heat treatment device and associated method for fabricating an electrode are described, and include forming a workpiece, including coating a current collector with a slurry. The workpiece is placed on a first spool, and the first spool including the workpiece is placed in a sealable chamber, wherein the sealable chamber includes the first spool, a heat exchange work space, and a second spool. An inert environment is created in the sealable chamber. The workpiece is subjected to a multi-step continuous heat treatment operation in the inert environment, wherein the multi-step continuous heat treatment operation includes continuously transferring the workpiece through the heat exchange work space between the first spool and the second spool and controlling the heat exchange work space to an elevated temperature.

MANUFACTURING OF A CERAMIC ARTICLE FROM A METAL PREFORM OR METAL MATRIX COMPOSITE PREFORM PROVIDED BY 3D-PRINTING OR 3D-WEAVING

The present invention relates to a method of manufacturing a ceramic article () from a metal or metal matrix composite preform () provided by 3D-printing or by 3D-weaving. The preform () is placed in a heating chamber (), and a predetermined time-temperature profile is applied in order to controllably react the preform () with a gas introduced into the heating chamber (). The metal, the gas and the time-temperature profile are chosen so as to induce a metal-gas reaction resulting in at least a part of the preform () transforming into a ceramic. Preferred embodiments of the invention comprises a first oxidation stage involving a metal-gas reaction in order to form a supporting oxide layer () at the surface of the metal, followed by a second stage in which the heating chamber () is heated to a temperature above the melting point of the metal to increase the kinetics of the chemical reaction. The invention also relates to a number of advantageous uses of a ceramic article manufactured as described. 2. Method according to claim 1 , wherein the preform 3D-printed using an additive manufacturing method selected from the group consisting of powder-bed claim 1 , blown-powder and wire-fed.3. Method according to claim 1 , wherein the 3D-printing process deploys one or more heat sources selected from the group consisting of: laser claim 1 , electron beam claim 1 , plasma and incoherent light claim 1 , to melt the metal.4. Method according to claim 1 , wherein the metal pre-form is 3D-printed into a shape selected from the group consisting of: a lattice claim 1 , an open cellular foam claim 1 , a porous article claim 1 , a mould and die.5. Method according to claim 1 , wherein the time-temperature profile comprises a first oxidation stage in which the heating chamber is heated to below the melting point of the metal to allow metal-gas reaction in order to form a supporting oxide layer at the surface of the metal claim 1 , followed by a second stage in which the heating chamber ...

Processes and materials for casting and sintering green garnet thin films

Set forth herein are processes and materials for making ceramic thin films by casting ceramic source powders and precursor reactants, binders, and functional additives into unsintered thin films and subsequently sintering the thin films under controlled atmospheres and on specific substrates.

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

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

METHOD FOR FABRICATION OF FULLY CERAMIC MICROENCAPSULATED NUCLEAR FUEL

Currently, the commercial fuel of choice, UO-zircaloy, is economical due to an established and simple fabrication process. However, the alternatives to the UO-zircaloy that may improve on system safety are sought. The fully ceramic microencapsulated (FCM) fuel system that is potentially inherently safe fuel and is an improvement on the UO-zircaloy system is prohibitively expensive because of the known methods to produce it. Disclosed herein is a new production route and fixturing that produces identical or superior FCM fuel consistent with mass production by providing a plurality of tristructural-isotropic fuel particles; mixing the plurality of tristructural-isotropic fuel particles with ceramic powder to form a mixture; placing the mixture in a die; and applying a current to the die so as to sinter the mixture by direct current sintering into a fuel element. 1. A method comprising:providing a plurality of tristructural-isotropic fuel particles;mixing the plurality of tristructural-isotropic fuel particles with ceramic powder to form a mixture;placing the mixture in a die; andapplying a current to the die so as to sinter the mixture by direct current sintering into a fuel element.2. The method according to claim 1 , further comprising adding the mixture to a ceramic fuel sleeve prior to the step of placing the mixture within the ceramic fuel sleeve in the die.3. The method according to claim 2 , wherein the ceramic fuel sleeve comprises silicon carbide (SiC).4. The method according to claim 2 , wherein the ceramic fuel sleeve comprises the same composition as the ceramic powder.5. The method according to claim 1 , wherein the die includes more than one parallel opening and the method includes placing a mixture of the plurality of tristructural-isotropic fuel particles with ceramic powder in each of the openings.6. The method according to claim 2 , wherein the die includes more than one parallel opening and the method includes placing a ceramic fuel sleeve ...

Multi-phasic ceramic composite

A ceramic composite can include a first ceramic phase and a second ceramic phase. The first ceramic phase can include a silicon carbide. The second phase can include a boron carbide. In an embodiment, the silicon carbide in the first ceramic phase can have a grain size in a range of 0.8 to 200 microns. The first phase, the second phase, or both can further include a carbon. In another embodiment, at least one of the first ceramic phase and the second ceramic phase can have a median minimum width of at least 5 microns.

CERAMIC SINTERING

Herein discussed is a method of sintering a ceramic comprising (a) providing an electromagnetic radiation (EMR) source; (b) (i) providing a layer of intermixed ceramic particles and absorber particles, wherein the absorber particles have a volume fraction in the intermixed particles in the range of no less than 3%; or (ii) providing a first layer comprising ceramic particles and a second layer comprising absorber particles in contact with at least a portion of the first layer, wherein the second layer is farther from the EMR source than the first layer; (c) heating (i) the layer of intermixed particles or (ii) the first layer using EMR; and (d) controlling the EMR such that at least a portion of the ceramic particles are sintered wherein (i) the layer of intermixed particles becomes impermeable or (ii) the first layer becomes impermeable, wherein the absorber particles have greater EMR absorption than the ceramic particles. 1. A method of sintering a ceramic comprisinga) providing an electromagnetic radiation (EMR) source;b) (i) providing a layer of intermixed ceramic particles and absorber particles, wherein the absorber particles have a volume fraction in the intermixed particles in the range of no less than 3%; or (ii) providing a first layer comprising ceramic particles and a second layer comprising absorber particles in contact with at least a portion of the first layer, wherein the second layer is farther from the EMR source than the first layer;c) heating (i) the layer of intermixed particles or (ii) the first layer using EMR; andd) controlling the EMR such that at least a portion of the ceramic particles are sintered wherein (i) the layer of intermixed particles becomes impermeable or (ii) the first layer becomes impermeable, wherein the absorber particles have greater EMR absorption than the ceramic particles.2. The method of claim 1 , wherein the ceramic particles comprise lanthanum strontium cobalt ferrite (LSCF) claim 1 , lanthanum strontium manganite ( ...

Fast firing method for high porosity ceramics

A method for firing a green honeycomb ceramic body including heating the green honeycomb ceramic body from room temperature to a first temperature of about 300° C. The green honeycomb ceramic body is then heated from the first temperature to a second temperature of greater than or equal to about 800° C. at a heating rate of greater than or equal to about 90° C./hr. The green honeycomb ceramic body may have a diameter of from greater than or equal to about 4.0 inches to less than or equal to about 9.0 inches, and it may include a carbon-based pore former in a concentration of from greater than or equal to about 10% to less than or equal to about 45% by weight.

Porous structures and methods of making same

The present disclosure provides methods to improve the properties of a porous structure formed by a rapid manufacturing technique. Embodiments of the present disclosure increase the bonding between the micro-particles 5 on the surface of the porous structure and the porous structure itself without substantially reduce the surface area of the micro-particles. In one aspect, embodiments of the present disclosure improves the bonding while preserving or increasing the friction of the structure against adjacent materials.

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.

Beta-SiAlON Wavelength Converters and Methods of Making the Same

Methods for producing wavelength converters are described. The methods include sintering a mixture consisting essentially of first particles and second particles to form a sintered article. In embodiments the first particles consist essentially of particles of β-SiAlON or precursors thereof, and the second particles consist essentially one or more sintering aids or precursors thereof. In embodiments the sintered article has a density that is greater than or equal to about 90% of a theoretical bulk density of the mixture, and is configured to convert primary light incident thereon to secondary light, wherein the secondary light exhibits a peak with a full width half maximum of greater than 0 to about 60 nanometers (nm) within a wavelength range of about 495 nm to about 600 nm. 1. A method for producing a wavelength converter , comprising:sintering a mixture consisting essentially of first particles and second particles to form a sintered article; wherein:said first particles consist essentially of particles of β-SiAlON or particles of one or more precursors of said β-SiAlON;said second particles consist essentially of particles of at least one sintering aid or particles of one or more precursors of said at least one sintering aid;said sintered article has a density that is greater than or equal to about 90% of a theoretical bulk density of said mixture of first particles and second particles; andsaid sintered article is configured to convert primary light incident thereon to secondary light, wherein said secondary light exhibits a peak with a full width half maximum of greater than 0 to about 60 nanometers (nm) within a wavelength range of about 495 nm to about 600 nm.2. The method of claim 1 , wherein said second particles consist essentially of particles of a sintering aid claim 1 , wherein said sintering aid is of the formula MN claim 1 , where M is selected from the group consisting of lithium (Li) claim 1 , sodium (Na) claim 1 , potassium (K) claim 1 , beryllium ...

Ceramic proppant and method for producing same

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

CERAMICS PRODUCT MANUFACTURING METHOD AND CERAMICS PRODUCT

Provided are a method of manufacturing a ceramic article in which the improvement of mechanical strength, wear resistance, and machinability is achieved using a direct modeling system, and a ceramic article. The manufacturing method includes the steps of: (i) arranging powder containing ceramics as a main component on a base; (ii) irradiating a part or an entirety of the arranged powder with an energy beam to melt and solidify the powder, to thereby obtain an intermediate modeled article; (iii) causing the modeled article to absorb a metal component-containing liquid to impregnate the modeled article therewith; and (iv) subjecting the modeled article having absorbed the metal component-containing liquid to heat treatment. 1. A method of manufacturing a ceramic article comprising the steps of:(i) arranging powder containing ceramics as a main component on a base;(ii) irradiating a part or an entirety of the arranged powder with an energy beam to melt and solidify the powder, to thereby obtain a modeled article;(iii) causing the modeled article to absorb a metal component-containing liquid; and(iv) subjecting the modeled article having absorbed the metal component-containing liquid to heat treatment.2. The method of manufacturing a ceramic article according to claim 1 , wherein the metal component-containing liquid is changed to a metal compound by the heat treatment in the step (iv).3. The method of manufacturing a ceramic article according to claim 1 , wherein the metal component-containing liquid generates a phase that is to have a eutectic relationship with a phase forming the modeled article by the heat treatment in the step (iv).4. The method of manufacturing a ceramic article according to claim 3 , wherein claim 3 , when a melting point of the phase generated from the metal component-containing liquid is represented by T claim 3 , a melting point of the phase forming the modeled article claim 3 , which is to form a eutectic with the phase generated from the ...

METHOD OF PRODUCING ALUMINA CERAMICS REINFORCED WITH OIL FLY ASH

A method for making ceramic composites via sintering a mixture of alumina and oil fly ash. The alumina is in the form of nanoparticles and/or microparticles. The oil fly ash may be treated with an acid prior to the sintering. The composite may comprise graphite carbon derived from oil fly ash dispersed in an alumina matrix. The density, mechanical performance (e.g. Vickers hardness, fracture toughness), and thermal properties (e.g. thermal expansion, thermal conductivity) of the ceramic composites prepared by the method are also specified. 1: A method of producing a composite comprising oil fly ash dispersed in an alumina matrix , the method comprising:mixing oil fly ash and alumina to form a mixture; andsintering the mixture thereby producing the composite,wherein:a weight ratio of the alumina to the oil fly ash is in a range of 9:1 to 500:1; andthe sintering comprises applying a uniaxial pressure ranging from 30-80 MPa to the mixture.2: The method of claim 1 , wherein the mixing involves sonication.3: The method of claim 1 , wherein the sintering is a spark plasma sintering process.4: The method of claim 1 , wherein the sintering is performed at a temperature ranging from 1 claim 1 ,200-1 claim 1 ,600° C.5: The method of claim 4 , wherein the sintering is performed with a holding time ranging from 5-60 minutes.6: The method of claim 1 , wherein the sintering comprises heating the mixture at a heating rate ranging from 50-150° C./min.7: The method of claim 1 , wherein the oil fly ash is treated with an acid prior to the mixing.8: The method of claim 1 , wherein the oil fly ash is devoid of nickel claim 1 , iron claim 1 , and vanadium.9: The method of claim 1 , wherein the oil fly ash is in the form of porous particles with an average particle size of 5-60 μm.10: The method of claim 9 , wherein the porous particles are spherical.11: The method of claim 1 , wherein the alumina comprises α-AlO.12: The method of claim 1 , wherein the alumina is in the form of particles ...

Macroporous titanium compound monolith and method for producing same

Provided are a macroporous titanium compound monolith and a production method thereof, the macroporous titanium compound monolith having a framework that is composed of a titanium compound other than titanium dioxide, having controlled macropores, and having electron conductivity, the titanium compound being oxygen-deficient titanium oxide, titanium oxynitride, or titanium nitride. Provided is a method including: placing a macroporous titanium dioxide monolith and a metal having titanium-reducing ability in a container, the macroporous titanium dioxide monolith having a co-continuous structure of a macropore and a framework that is composed of titanium dioxide; creating a vacuum atmosphere or an inert gas atmosphere within the container; and heating the monolith and the metal to cause gas-phase reduction that removes oxygen atom from the titanium dioxide composing the monolith by the metal acting as an oxygen getter, thereby obtaining a macroporous oxygen-deficient titanium oxide monolith having a co-continuous structure of the macropore and a framework that is composed of oxygen-deficient titanium oxide, the macroporous oxygen-deficient titanium oxide monolith having electron conductivity derived from the oxygen-deficient titanium oxide.

Pressure Sensor having a Ceramic Platform

A pressure sensor, including a platform of ceramic, a measuring membrane arranged on the platform, a pressure measuring chamber enclosed in the platform under the measuring membrane, and at least one metal body connected with the platform via a pressure-tight, preferably elastomer free, mechanical connection. Thermomechanical stresses arising from the connection are reduced by features including that the pressure-tight, mechanical connection occurs via an adapting body arranged between the platform and the metal body. The adapting body has a thermal expansion coefficient, which rises in direction (z) extending from the platform to the metal body from a coefficient of expansion corresponding to a thermal coefficient of expansion of the ceramic of the platform to a coefficient of expansion corresponding to the thermal coefficient of expansion of the metal body, and the adapting body is connected by a first joint with the platform and by a second joint with the metal body. 117-. (canceled)18. A pressure sensor , comprising:a platform of ceramic;a measuring membrane arranged on said platform;a pressure measuring chamber enclosed in said platform under said measuring membrane; andat least one metal body connected with said platform via a pressure-tight, mechanical connection, wherein:said pressure-tight mechanical connection includes an adapting body arranged between said platform and said metal body;said adapting body has a thermal expansion coefficient, which rises along said adapting body in a direction extending from said platform to said metal body from a coefficient of expansion corresponding to a thermal coefficient of expansion of the ceramic of said platform to a coefficient of expansion corresponding to the thermal coefficient of expansion of said metal body; andsaid adapting body is connected by a first joint with said platform and by a second joint with said metal body.19. The pressure sensor as claimed in claim 18 , wherein:said adapting body has layers of ...

Multilayer ceramic capacitor

A multilayer ceramic capacitor that has alternately stacked dielectric layers containing, as their main constituent, a barium titanate based compound that has a perovskite-type crystal structure; and internal electrode layers with electrode defects. The internal electrode layers are 0.6 μm or less in thickness. The electrode defects have electrode defects containing an Al—Si based oxide mainly containing Al and Si. The number of the electrode defects containing the Al—Si based oxide is 30% or more in number ratio to the total number of electrode defects in the internal electrodes.

Sintered body

A sintered material is provided having a phase of a compound at least containing a rare earth element and fluorine, the sintered material having an L* value of 70 or more in the L*a*b* color space. The crystal grains of the sintered material preferably has an average grain size of 10 μm or less. The sintered material preferably has a relative density of 95% or more. The sintered material preferably has a three-point flexural strength of 100 MPa or more. The sintered material preferably contains no oxygen, or preferably has an oxygen content of 13% by mass or less when containing oxygen. The compound is preferably rare earth element fluoride or oxyfluoride.

CERAMIC POWDER

Ceramic powder includes: barium titanate as a main component, wherein: a donor element having a larger valence than Ti is solid-solved in the barium titanate; an acceptor element having a smaller valence than Ti and larger ion radius than Ti and the donor element is solid-solved in the barium titanate, a solid solution amount of the donor element with respect to the barium titanate is 0.05 mol or more and 0.3 mol or less; a solid solution amount of the accepter element with respect to the barium titanate is 0.02 mol or more and 0.2 mol or less; and relationships y≥−0.0003x+1.0106, y≤−0.0002x+1.0114, 4≤x≤25 and y≤1.0099 are satisfied when a specific surface area of the ceramic powder is “x” and an axial ratio c/a of the ceramic powder is “y”. 1. Ceramic powder comprising:barium titanate as a main component,wherein:a donor element having a larger valence than Ti is solid-solved in the barium titanate;an acceptor element having a smaller valence than Ti and larger ion radius than Ti and the donor element is solid-solved in the barium titanate,a solid solution amount of the donor element with respect to the barium titanate is 0.05 mol or more and 0.3 mol or less on a presumption that an amount of the barium titanate is 100 mol and the donor element is converted into an oxide;a solid solution amount of the accepter element with respect to the barium titanate is 0.02 mol or more and 0.2 mol or less on a presumption that the amount of the barium titanate is 100 mol and the acceptor element is converted into an oxide; andrelationships y≥−0.0003x+1.0106, y≤−0.0002x+1.0114, 4≤x≤25 and y≤1.0099 are satisfied when a specific surface area of the ceramic powder is “x” and an axial ratio c/a of the ceramic powder is “y”.2. The ceramic powder as claimed in claim 1 , wherein the donor element is at least one of Mo and W.3. The ceramic powder as claimed in claim 1 , wherein the acceptor element is Mn. This application is a continuation of application Ser. No. 15/623,253, filed Jun. ...

OXIDE SUPERCONDUCTOR AND METHOD FOR MANUFACTURING THE SAME

An oxide superconductor of an embodiment includes an oxide superconductor layer having a continuous Perovskite structure containing rare earth elements, barium (Ba), and copper (Cu). The rare earth elements contain a first element which is praseodymium (Pr), at least one second element selected from the group consisting of neodymium (Nd), samarium (Sm), europium (Eu), and gadolinium (Gd), at least one third element selected from the group consisting of yttrium (Y), terbium (Tb), dysprosium (Dy), and holmium (Ho), and at least one fourth element selected from the group consisting of erbium (Er), thulium (Tm), ytterbium (Yb), and lutetium (Lu). 1. An oxide superconductor comprising an oxide superconductor layer having a continuous Perovskite structure including rare earth elements , barium (Ba) , and copper (Cu) , the rare earth elements including a first element , at least one second element , at least one third element , and at least one fourth element , the first element being praseodymium (Pr) , the at least one second element being selected from the group consisting of neodymium (Nd) , samarium (Sm) , europium (Eu) , and gadolinium (Gd) , the at least one third element being selected from the group consisting of yttrium (Y) , terbium (Tb) , dysprosium (Dy) , and holmium (Ho) , and the at least one fourth element being selected from the group consisting of erbium (Er) , thulium (Tm) , ytterbium (Yb) , and lutetium (Lu).2. The oxide superconductor according to claim 1 , wherein the oxide superconductor layer includes fluorine (F) of 2.0×10atoms/cc or more and 5.0×10atoms/cc or less and carbon (C) of 1.0×10atoms/cc or more and 5.0×10atoms/cc or less.3. The oxide superconductor according to claim 1 , wherein when the number of atoms of the rare earth elements is N(RE) claim 1 , and the number of atoms of the at least one third element is N(MA) claim 1 , N(MA)/N(RE)≧0.6 is satisfied.4. The oxide superconductor according to claim 1 , wherein when the number of atoms of ...

TRANSPARENT CERAMICS, MANUFACTURING METHOD THEREOF, AND MAGNETO-OPTICAL DEVICE

A transparent ceramic material is manufactured by molding a source powder into a compact, the source powder comprising a rare earth oxide consisting of at least 40 mol % of terbium oxide and the balance of another rare earth oxide, and a sintering aid, sintering the compact at a temperature T (1,300° C.≤T≤1,650° C.) by heating from room temperature to T (1200° C.≤T≤T) at a rate of at least 100° C./h, and optionally heating from T at a rate of 1-95° C./h, and HIP treating the sintered compact at 1,300-1,650° C. The ceramic material has improved diffuse transmittance in the visible region and functions as a magneto-optical part in a broad visible to NIR region. 2. The ceramic material of wherein the specimen of 11 mm long has an overall light transmittance of at least 80.2% and a diffuse transmittance of up to 0.7% at wavelength 1 claim 1 ,064 nm.3. A magneto-optical device comprising a magneto-optical part using the transparent ceramic material of . This application claims divisional status from U.S. Ser. No. 16/292,928 filed Mar. 5, 2019, which in turn claims priority to Patent Application No. 2018-043076 filed in Japan on Mar. 9, 2018. The entirety of each of these related applications is hereby incorporated by reference.This invention relates to a method for manufacturing a transparent ceramic material in the form of a Tb-based complex oxide sintered body having a high transparency or light transmittance in the visible to near-infrared (NIR) region, a transparent ceramic material manufactured thereby, and a magneto-optical device.There have been developed and manufactured a wide variety of ceramics covering from traditional ceramics such as tiles and potteries to fine ceramics such as piezoelectric parts, superconductor parts and transparent ceramics.Transparent ceramics draw attention as a new replacement to single crystals since laser oscillation by ceramics was reported in 1990s. Transparent ceramics are used in magneto-optical parts, scintillator materials, ...

Boron-Free Aluminum Castshop Ceramic Foam Filter

An improved porous ceramic foam filter, and method of making the porous ceramic foam filter is provided. The porous ceramic foam filter comprising 28-78 wt % alumina; 18-78 wt % silica; and 1-15 wt % Group II oxide. 1. A porous ceramic foam filter comprising:28-78 wt % alumina;18-78 wt % silica; and1-15 wt % Group II oxide.2. The porous ceramic foam filter of comprising less than 3 wt % other metal oxides.3. The porous ceramic foam filter of comprising:28-75 wt % alumina.4. The porous ceramic foam filter of comprising:20-65 wt % silica.5. The porous ceramic foam filter of comprising:2-12 wt % Group II oxide.6. The porous ceramic foam filter of wherein said Group II oxide is selected from calcium claim 1 , strontium claim 1 , barium and magnesium.7. The porous ceramic foam filter of wherein at least 50 wt % of said Group II oxide is calcium oxide.8. The porous ceramic foam filter of comprising an aluminosilicate core and a glass shell.9. The porous ceramic foam filter of wherein said aluminosilicate core comprises kyanite.10. The porous ceramic foam filter of comprising 70-90 wt % of said aluminosilicate core and 10-30 wt % of said glass shell.11. The porous ceramic foam filter of comprising:an aluminosilicate core; anda shell comprising:40-80 wt % silica;10-50 wt % Group II oxide; and0-20 wt % Alumina.12. The porous ceramic foam filter of wherein said shell comprises:55-70 wt % silica;25-40 wt % Group II oxide; and0-10 wt % Alumina.13. The porous ceramic foam filter of comprising:an aluminosilicate core comprising:40-80 wt % alumina; and20-60 wt % silica; anda shell.14. The porous ceramic foam filter of comprising:an aluminosilicate core comprising:50-70 wt % alumina; and30-50 wt % silica; anda shell.15. The porous ceramic foam filter of comprising: 40-80 wt % alumina; and', '20-60 wt % silica; and, 'an aluminosilicate core comprising 40-80 wt % silica;', '10-50 wt % Group II oxide; and', '0-20 wt % Alumina., 'a shell comprising16. The porous ceramic foam filter of ...

Solid Electrolyte, Method For Producing Solid Electrolyte, And Composite

The solid electrolyte according to an embodiment of the present disclosure is represented by the following formula (1):Li7-x-yLa3(Zr2-x-yInxMy)O12  (1)wherein 0.00<x<0.20, 0.20≤y<1.50, M is two or more elements selected from the group consisting of Nb, Ta, and Sb.

CERAMIC WAFER AND THE MANUFACTURING METHOD THEREOF

A method of producing ceramic wafer includes a forming step and processing step. The processing step includes forming positioning notch or positioning, flat edge and edge profile, which avoids the ceramic wafers to have processing defect during cutting, grinding, and polishing, for increasing yield. The ceramic particles for producing ceramic wafer include nitride ceramic powder, oxide ceramic powder, and nitride ceramic powder. The ceramic wafer has low dielectric constant, insulation, and excellent heat dissipation, which can be applied for the need of semiconductor process, producing electric product and semiconductor equipment. 1. A method of manufacturing a ceramic wafer , comprising the steps of:(a) molding step: performing pressurized molding on a ceramic granule mechanically or hydraulically in a die operating under a vacuum or normal pressure or in presence of a pressurizing gas, followed by performing isostatic pressing with isotropic hydraulic pressure or pneumatic pressure to produce a ceramic green compact;(b) temperature-controlling step: debinding the ceramic green compact, followed by sintering the debinded ceramic green compact under a normal pressure or high pressure, so as to form a ceramic bulk;(c) grinding step: performing outer diameter grinding on the ceramic bulk to form a precision ceramic bulk; and(d) processing step: forming a locating notch or a locating flat on the precision ceramic bulk, performing multi-wire cutting on the precision ceramic bulk to form wafer slices, grinding flat surfaces and peripheral lead angles of the wafer slice, and polishing the wafer slice to form the ceramic wafer.2. A method of manufacturing a ceramic wafer , comprising the steps of:(a) molding step: coupling a ceramic granule to a resin and a dispersing agent, followed by performing a coating process with a scraper, so as to form a ceramic sheet; and(b) processing step: cutting the ceramic sheet into wafer slices according to an outer dimension thereof, ...

Sinterable and/or fusible ceramic mass, production and use thereof

A sinterable and/or fusible ceramic mass is disclosed, having a long-term stable compound of crystalline phases of apatite, wollastonite, titanite and optionally cristobalite, which is stabilized by a glass phase, and a production process therefor. The ceramic mass can be obtained by sintering a mixture comprising at least the constituents SiO 2 , CaO, P 2 O 5 , MgO, CaF 2 and TiO 2 , on their own or in combination with at least one alkali oxide, the alkali oxide being chosen from NaO 2 and K 2 O. The invention further relates to uses of the sintered material in the form of shaped articles for strengthening, cleaning, roughening or polishing surfaces of medical implants or as a final prosthesis.

Three-Dimensional (3D) Printing With A Sintering Aid/Fixer Fluid And A Liquid Functional Material

In an example of a three-dimensional (3D) printing method, a ceramic build material is applied. A liquid functional material, including an anionically stabilized susceptor material, is applied to at least a portion of the ceramic build material. A sintering aid/fixer fluid, including a cationically stabilized amphoteric alumina particulate material, is applied to the at least the portion of the ceramic build material. The applied anionically stabilized susceptor material and the applied cationically stabilized amphoteric alumina particulate material react to immobilize the anionically stabilized susceptor material, thereby patterning the at least the portion of the ceramic build material. 1. A three-dimensional (3D) printing method , comprising:applying a ceramic build material;applying a liquid functional material, including an anionically stabilized susceptor material, to at least a portion of the ceramic build material; andapplying a sintering aid/fixer fluid, including a cationically stabilized amphoteric alumina particulate material, to the at least the portion of the ceramic build material,the applied anionically stabilized susceptor material and the applied cationically stabilized amphoteric alumina particulate material reacting to immobilize the anionically stabilized susceptor material, thereby patterning the at least the portion of the ceramic build material.2. The 3D printing method as defined in wherein the liquid functional material is applied before the sintering aid/fixer fluid.3. The 3D printing method as defined in wherein the liquid functional material and the sintering aid/fixer fluid are applied simultaneously from separate applicators.4. The 3D printing method as defined in wherein the application of the ceramic build material claim 1 , the liquid functional material claim 1 , and the sintering aid/fixer fluid forms a first layer of a green body claim 1 , and wherein the method further comprises heating the green body using microwave radiation ...

METHOD FOR PRODUCING CERAMIC SINTERED BODY, AND METHOD AND DEVICE FOR PRODUCING CERAMIC MOLDED BODY

The present invention is a sintering method of a ceramic for sintering characterized by forming a layer containing a carbon powder on a surface of an article consisting of a ceramic for sintering, and then irradiating with laser a surface of the carbon powder-containing layer of a lamination obtained. 1. A method for sintering a ceramic , the method comprising:forming a layer comprising a carbon powder on a surface of an article consisting of a ceramic for sintering to thereby form a carbon powder-containing laminated layer, andirradiating with a laser a surface of the carbon powder-containing laminated layer.2. The method according to claim 1 , wherein the ceramic is at least one compound selected from a group consisting of an oxide claim 1 , a nitride claim 1 , and an oxynitride.3. A method for producing an article having a sintered part claim 1 , the method comprising:forming a layer comprising a carbon powder on a surface of a non-sintered part of an article having the non-sintered part consisting of a ceramic for sintering to thereby form a carbon powered-containing laminated layer, andapplying a laser to a surface of the carbon powder-containing laminated layer to sinter the ceramic located on a base side of an irradiated part, sequentially.4. The method according to claim 3 , wherein the ceramic is at least one compound selected from a group consisting of an oxide claim 3 , a nitride claim 3 , and an oxynitride.5. A method for producing an article having a three-dimensional sintered part claim 3 , the method comprising:forming a layer comprising a carbon powder on a surface of a non-sintered part of an article having the non-sintered part consisting of a ceramic for sintering to thereby form a carbon powder-containing laminated layer, andapplying a laser to a surface of the carbon powder-containing laminated layer to sinter the ceramic located on a base side of an irradiated part, sequentially, and subsequentlyforming a non-sintered part consisting of a ...

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 fabricating an orange, zirconia-based article, characterized in that it includes the series of steps consisting in creating a first mixture comprising a zirconia powder, 3 to 20% by weight of at least one stabilizer 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 form 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; creating a second mixture including said first mixture and a binder; creating a granulated mixture by granulating said second mixture; forming a green body by giving said second granulated mixture the shape of the desired article; air sintering for at least thirty minutes at a temperature comprised between 1,250 and 1,500° C. and annealing the desired article at a temperature comprised between 700° C. and 1,350° C. for a period comprised between 30 minutes and 20 hours in a reducing atmosphere, and polishing said sintered green body. 19-. (canceled)10. A method for fabricating a bright orange zirconia-based article , comprising: a zirconia powder,', '3% to 20% of at least one stabilizer selected from the group consisting of comprising yttrium oxide, magnesium oxide, calcium oxide, and a combination thereof,', '0.1% to 5% of at least one element intended to create a vitreous phase selected selected from the group consisting of silicon oxide, aluminium oxide, lithium oxide, yttrium oxide, and a combination thereof, and', '1% to 6% of a cerium oxide powder;, 'preparing a first mixture comprising, at weight percentages relative to the total weight of the first mixturepreparing a second mixture comprising the first mixture and a binder;preparing a granulated mixture by granulating the second mixture;forming a green body by shaping the granulated mixture;air- ...

Moderator for moderating neutrons

Disclosed is a moderator for moderating neutrons, including a substrate and a surface treatment layer or a dry inert gas layer or a vacuum layer coated on the surface of the substrate, wherein the substrate is prepared from a moderating material by a powder sintering device through a powder sintering process from powders or by compacting powders into a block, and the moderating material includes 40% to 100% by weight of aluminum fluoride; wherein the surface treatment layer is a hydrophobic material; and the surface treatment layer or the dry inert gas layer or the vacuum layer is used for isolating the substrate from the water in the environment in which the substrate is placed. The surface treated moderator can avoid the hygroscopic or deliquescence of the moderating material during use, improve the quality of the neutron source and prolong the service life.

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.

LIGHT-CURABLE CERAMIC SLURRIES WITH HYBRID BINDERS

The subject matter disclosed herein relates generally to light-curable ceramic slurries, and more specifically, to hybrid binders for light-curable ceramic slurries. A light-curable ceramic slurry includes a hybrid binder having an organic resin component and a multi-functional reactive siloxane component that is miscible with the organic resin component. The slurry also includes a photoinitiator having a corresponding photoactivation wavelength range and ceramic particles. The slurry is cured via exposure to light in the photoactivation wavelength range of the photoinitiator such that both the organic resin component and the multi-functional reactive siloxane component of the hybrid binder polymerize. 1. A light-curable ceramic slurry , comprising: an organic resin component; and', 'a multi-functional reactive siloxane component that is miscible with the organic resin component;, 'a hybrid binder, comprisinga photoinitiator having a corresponding photoactivation wavelength range; andceramic particles, wherein the ceramic slurry is cured via exposure to light in the photoactivation wavelength range of the photoinitiator such that both the organic resin component and the multi-functional reactive siloxane component of the hybrid binder polymerize.2. The ceramic slurry of claim 1 , wherein the multi-functional reactive siloxane component and the organic resin component each homopolymerize to form interpenetrating polymer networks when cured.3. The ceramic slurry of claim 1 , wherein the multi-functional reactive siloxane component comprises more than two functional groups that polymerize when cured.4. The ceramic slurry of claim 1 , wherein the multi-functional reactive siloxane component remains substantially miscible with the organic resin component of the hybrid binder throughout curing claim 1 , and wherein multi-functional reactive siloxane component exclusively copolymerizes with the organic resin component of the hybrid binder when cured.5. The ceramic slurry ...

Porous shaped metal-carbon products

The present invention provides a porous metal-containing carbon-based material that is stable at high temperatures under aqueous conditions. The porous metal-containing carbon-based materials are particularly useful in catalytic applications. Also provided, are methods for making and using porous shaped metal-carbon products prepared from these materials.

DIELECTRIC MATERIAL AND ELECTROSTATIC CHUCKING DEVICE

A dielectric material includes a composite sintered body in which conductive particles are dispersed in an insulating material, in which a dielectric constant at a frequency of 40 Hz is 10 or higher, and a difference between a maximum dielectric loss value and a minimum dielectric loss value at a frequency of 1 MHz in a surface of the composite sintered body is 0.002 or less. 1. A dielectric material , whereinthe dielectric material is a composite sintered body in which conductive particles are dispersed in an insulating material,a dielectric constant of the dielectric material at a frequency of 40 Hz is 10 or higher, anda difference between a maximum value and a minimum value of dielectric loss of the dielectric material wherein the dielectric loss is measured at a frequency of 1 MHz on the surface of the composite sintered body is 0.002 or less.2. The dielectric material according to claim 1 ,{'sup': '13', 'wherein a volume resistivity at 20° C. of the dielectric material is 10Ω·cm or higher, and'}a withstand voltage at 20° C. of the dielectric material is 5 kV/mm or higher.3. The dielectric material according to claim 1 ,{'sup': '13', 'wherein a volume resistivity at 120° C. of the dielectric material is 10Ω·cm or higher, and'}a withstand voltage at 20° C. of the dielectric material is 5 kV/mm or higher.4. The dielectric material according to claim 1 ,wherein a thermal conductivity of the dielectric material is 20 W/m·K or higher.5. The dielectric material according to claim 1 ,wherein dielectric loss at a frequency of 40 Hz of the dielectric material is 0.01 or higher and 0.05 or lower.6. An electrostatic chuck device comprisinga base having a main surface on which a plate-like sample is electrostatically attracted,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein the base is formed of the dielectric material according to .'}7. The dielectric material according to claim 1 ,wherein the insulating material is an insulating ceramic.8. The dielectric ...

Dielectric composition and electronic component

Provided is a dielectric composition exhibiting a high strength and a high specific dielectric constant. The dielectric composition contains composite oxide particles having a composition formula represented by (Sr x Ba 1-x ) y Nb 2 O 5+y and an Al-based segregation phase. The Al segregation phase has niobium, aluminum, and oxygen.

DENSE BORON NITRIDE CERAMIC WITH HIGH PLASTICITY AND HIGH ELASTICITY AND PREPARATION FOR THE SAME

The present disclosure relates to a dense boron nitride ceramic with high plasticity and high elasticity and the preparation process thereof. The preparation process includes the following steps: A) weighing a predetermined amount of spherical boron nitride nano-powders with onion-like structure, pre-pressing them into a pre-pressed body and putting the pre-pressed body into a sintering mold; B) putting the pre-pressed body obtained in step A) together with the sintering mold into a spark plasma sintering apparatus or a hot-pressing sintering apparatus for sintering; and C) taking out the mold after cooling, and removing the mold to obtain the boron nitride dense ceramic block with high plasticity and high elasticity. According to the present invention, a boron nitride ceramic with high strength and high plasticity is obtained via sintering spherical boron nitride nano-powders with onion-like structure. 1. A dense boron nitride ceramic with high plasticity and high elasticity , wherein the ceramic has a room-temperature compressive strength of not less than about 400 MPa , a total room-temperature compressive strain of not less than about 9% , a room-temperature plastic strain of not less than about 4% and a room-temperature elastic strain of not less than about 4%.2. The dense boron nitride ceramic with high plasticity and high elasticity as claimed in claim 1 , wherein its room-temperature elastic strain is not less than about 5%.3. A process for the preparation of a dense boron nitride ceramic with high plasticity and high elasticity claim 1 , comprising the following steps:A) Weighing a predetermined amount of spherical boron nitride nano-powders with onion-like structure, pre-pressing them into a pre-pressed body and putting the pre-pressed body into a sintering mold;B) Putting the pre-pressed body obtained in step A) together with the sintering mold into a spark plasma sintering apparatus or a hot-pressing sintering apparatus for sintering; andC) Taking out ...

ELABORATION OF AN ADVANCED CERAMIC MADE OF RECYCLED INDUSTRIAL STEEL WASTE

A ceramic and a method of forming a ceramic including milling steel slag exhibiting a diameter of 5 mm of less to form powder, sieving the powder to retain the powder having a particle size in the range of 20 to 400 removing free iron from the powder with a magnet, heat treating the powder at a temperature in the range of 700° C. to 1200° C. for a time period in the range of 1 hour to 10 hours and oxidizing retained iron in the powder, compacting the powder at a compression pressure in the range of 20 MPa to 300 MPA, and sintering the powder at a temperature in the range of 700° C. to 1400° C. for a time period in the range of 0.5 hours to 4 hours to provide a ceramic. 1. A method of forming a ceramic from steel slag , comprising:milling steel slag exhibiting a diameter of 5 mm of less to form powder;sieving said powder to retain said powder having a particle size in the range of 20 μm to 400 μm;removing free iron from said powder with a magnet;heat treating said powder at a temperature in the range of 700° C. to 1200° C. for a time period in the range of 1 hour to 10 hours and oxidizing retained iron in said powder;compacting said powder at a compression pressure in the range of 20 MPa to 300 MPa; andsintering said powder at a temperature in the range of 700° C. to 1400° C. for a time period in the range of 0.5 hours to 4 hours to provide a ceramic.2. The method of claim 1 , further comprising preheating said powder prior to sintering wherein said green compact is preheated at a rate of 1 K/min to 10 K/min.3. The method of claim 1 , wherein said sintering is performed after compacting claim 1 , wherein said compression pressure is in the range of 30 MPa to 300 MPa claim 1 , and said sintering temperature is in the range of 800° C. to 1100° C.4. The method of claim 3 , wherein said compression pressure in the range of 120 MPa to 180 MPa.5. The method of claim 1 , wherein sintering is performed concurrently with said compacting.6. The method of claim 5 , wherein said ...

Rapid sintering system and rapid sintering method

A rapid sintering system and rapid sintering method, the rapid sintering system comprising: a furnace body (110) comprising a hearth (111) and a furnace mouth (112) that communicate with each other; a lifting device (120) arranged below the furnace mouth (112), comprising a support (122) and a sample stage (121), the sample stage (121) being disposed on the support (122); a temperature acquisition device (130), disposed on the sample stage (121); a control device (140), disposed outside of the hearth (111), electrically connected to the lifting device (120) and the temperature acquisition device (130) and used to control lifting of the lifting device (120) according to a temperature acquired by the temperature acquisition device (130) and a preset sintering condition; and a spacer (150), disposed at a first end of the lifting device (120), a first spacing being present between the spacer (150) and the sample stage (121), and the furnace mouth (112) is blocked by the spacer (150) when the rapid sintering system is in a loading or unloading work state. The rapid sintering method uses the rapid sintering system.

PRODUCTION METHOD OF CALCIUM CARBONATE POROUS SINTERED BODY

Provided is a production method that can easily produce a calcium carbonate porous sintered body. The production method includes the steps of: preparing a dispersion liquid containing calcium carbonate and a gelling agent; adding a foaming agent to the dispersion liquid, followed by stirring until foamy to make a foam; turning the foam into a gel; and sintering the gelled foam to produce a calcium carbonate porous sintered body. 1. A method for producing a calcium carbonate porous sintered body , the method comprising the steps of:preparing a dispersion liquid containing calcium carbonate and a gelling agent;adding a foaming agent to the dispersion liquid, followed by stirring until foamy to make a foam;turning the foam into a gel; andsintering the gelled foam to produce a calcium carbonate porous sintered body.2. The method for producing a calcium carbonate porous sintered body according to claim 1 , wherein the dispersion liquid contains a sintering aid.3. The method for producing a calcium carbonate porous sintered body according to claim 2 , wherein the sintering aid contains carbonates or fluorides of at least two of lithium claim 2 , sodium claim 2 , and potassium and has a melting point of 600° C. or below.4. The method for producing a calcium carbonate porous sintered body according to claim 1 , wherein the dispersion liquid contains the calcium carbonate in an amount of 20% by volume or more.5. The method for producing a calcium carbonate porous sintered body according to claim 1 , wherein the step of sintering is the step of performing presintering and then performing final sintering.6. The method for producing a calcium carbonate porous sintered body according to claim 5 , wherein a temperature of the presintering is in a range of 200 to 500° C. and a temperature of the final sintering is equal to or greater than the temperature of the presintering and in a range of 420 to 600° C.7. The method for producing a calcium carbonate porous sintered body ...

Dielectric Ceramic Composition and Ceramic Capacitor Using the Same

a dielectric ceramic composition comprising a main component comprising an oxide represented by:UaXbYcZd((Ca1-x-ySrxMy)m(Zr1-u-vTiuHfv)O3)1-a-b-c-dwherein the elements defined by U, X, Y, Z and M and subscripts a, b, c, d, x, y, m, u and v are defined.

Method of firing cordierite bodies

Methods of firing a cordierite green body to form a fired cordierite body. The green body comprises cordierite-forming raw materials and organic material, the body having a core portion and a skin portion. The green body is pre-heated to a pre-heat temperature that is less than a thermal decomposition temperature of the organic material. The green body is maintained at the pre-heat temperature for a period of time sufficient to minimize a temperature differential between the core portion and the skin portion. The green body is heated to a low firing temperature in a firing atmosphere sufficient to reduce a content of the organic material and to substantially remove chemically bound water from hydrous alumina. The green body is heated to a high firing temperature in a firing atmosphere sufficient to reduce the content of the organic material prior to a substantial removal of chemically bound water from clay.

DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT

Provided is a dielectric composition exhibiting a high specific dielectric constant and a high resistivity even when fired in a reducing atmosphere. The dielectric composition contains a composite oxide having a composition represented by (SrBa)NbO, the crystal system of the composite oxide is tetragonal, and y in the composition formula is smaller than 1. 1. A dielectric composition comprising a composite oxide having a composition formula represented by (SrBa)NbO , wherein the crystal system of the composite oxide is tetragonal , and y in the composition formula is smaller than 1.2. The dielectric composition according to claim 1 , wherein the space group of the composite oxide is P4bm.3. The dielectric composition according to claim 1 , wherein x in the composition formula is 0.2 to 07.4. The dielectric composition according to claim 1 , wherein y in the composition formula is 0.95 or less.5. The dielectric composition according to claim 1 , further comprising a first subcomponent element claim 1 ,wherein the first subcomponent element is at least one selected from the group consisting of copper, zinc, palladium, tantalum, and tin.6. The dielectric composition according to claim 5 , wherein the first subcomponent element is contained in an amount of 10 parts by mole or less with respect to 100 parts by mole of niobium in the composite oxide.7. The dielectric composition according to claim 1 , comprising a second subcomponent element claim 1 ,wherein the second subcomponent element is at least one selected from the group consisting of gallium, potassium, molybdenum, boron, nickel, and zirconium.8. The dielectric composition according to claim 7 , wherein the second subcomponent element is contained in an amount of 10 parts by mole or less with respect to 100 parts by mole of niobium in the composite oxide.9. An electronic component claim 1 , comprising a dielectric layer containing the dielectric composition according to .10. A dielectric composition claim 1 , ...

METHODS OF FORMING ARTICLES INCLUDING SILICON CARBIDE BY SPARK PLASMA SINTERING, AND RELATED STRUCTURES

A method of forming silicon carbide by spark plasma sintering comprises loading a powder comprising silicon carbide into a die and exposing the powder to a pulsed current to heat the powder at a rate of between about 50° C./min and about 200° C./min to a peak temperature while applying a pressure to the powder. The powder is exposed to the peak temperature for between about 30 seconds and about 5 minutes to form a sintered silicon carbide material and the sintered silicon carbide material is cooled. Related structures and methods are disclosed. 1. A method of forming an article including silicon carbide by spark plasma sintering , the method comprising:providing a powder comprising silicon carbide into a die;{'sup': '2', 'pulsing a direct current through the powder in the die at a current density less than about 0.1 A/mmto heat the powder to a peak temperature of at least about 1,950° C. and form a sintered silicon carbide structure;'}{'sup': 2', '2, 'exposing the sintered silicon carbide structure to a current density of about 0.02 A/mmand about 0.08 A/mmwhile exposing the sintered silicon carbide structure to the peak temperature; and'}cooling the sintered silicon carbide structure.2. The method of claim 1 , further comprising selecting the die to comprise at least one tapered sidewall.3. The method of claim 2 , further comprising selecting the taper to comprise about a 1° taper.4. The method of claim 1 , further comprising selecting the die to comprise graphite exhibiting a coefficient of thermal expansion equal to about a coefficient of thermal expansion of the sintered silicon carbide structure between a temperature of about 1 claim 1 ,950° C. and about 2 claim 1 ,100° C.5. The method of claim 1 , wherein forming a sintered silicon carbide structure comprises forming a silicon carbide structure having a density of about 3.21 g/cm.6. The method of claim 1 , wherein providing a silicon carbide powder into the die comprises providing the silicon carbide powder ...

SPARK PLASMA SINTERING METHODS FOR FABRICATING DENSE GRAPHITE

Various embodiments of the disclosure provide methods using spark plasma sintering (SPS) at moderate temperatures and moderate pressures to fabricate high-density graphite material. The moderate temperatures may be temperatures not exceeding about 1200° C. The moderate pressures may be pressures not exceeding about 300 MPa. The high density exhibited by the resulting, sintered, high-density graphite material may be greater than about 1.75 g/cm(e.g., greater than about 2.0 g/cm). 1. A method for fabricating a high-density graphite material , the method comprising subjecting a raw material comprising graphite to an electrical current , a temperature not exceeding about 1200° C. , and a pressure not exceeding about 300 MPa to sinter the raw material into a high-density graphite material exhibiting a density of greater than 1.75 g/cm.2. The method of claim 1 , further comprising selecting the raw material to comprise the graphite in powder form.3. The method of claim 1 , further comprising selecting the raw material to comprise graphite in natural flake form.4. The method of claim 1 , further comprising fabricating the high-density graphite material to exhibit a density of greater than 2.0 g/cm.5. The method of claim 4 , further comprising fabricating the high-density graphite material to define a graphite structure with a greatest outer dimension of at least 5 mm.6. The method of claim 4 , further comprising fabricating the high-density graphite material to define a graphite structure with a greatest outer dimension of at least 50 mm.7. The method of claim 1 , further comprising claim 1 , prior to the subjecting claim 1 , providing a die defining an opening and inserting the raw material in the opening of the die.8. The method of claim 7 , wherein providing the die comprises providing a die comprising tungsten carbide.9. The method of claim 1 , further comprising claim 1 , prior to the subjecting claim 1 , compacting the raw material.10. The method of claim 1 , further ...

METHOD AND APPARATUS FOR FORMING CERAMIC PARTS IN HOT ISOSTATIC PRESS USING ULTRASONICS

A method for forming a ceramic object from a ceramic powder is provided. The ceramic powder is placed in a press. Pressure is applied to the ceramic powder with a pressure to cause consolidation of the ceramic powder. Ultrasonic energy is applied to the ceramic powder for at least a period of time during the applying pressure to the ceramic powder, forming the ceramic powder into a ceramic object. The applying pressure to the ceramic powder is ended. 1. A method for forming a ceramic object from a ceramic powder , comprising:placing the ceramic powder in a press;applying pressure to the ceramic powder with a pressure to cause consolidation of the ceramic powder;applying ultrasonic energy to the ceramic powder for at least a period of time during the applying pressure to the ceramic powder, forming the ceramic powder into a ceramic object; andending the applying pressure to the ceramic powder.2. The method claim 1 , as recited in claim 1 , wherein the wherein the placing the ceramic powder in the press claim 1 , comprises:placing the ceramic powder in a mold; andplacing the mold in the press.3. The method claim 2 , as recited in claim 2 , wherein the press provides isostatic pressure claim 2 , wherein the applying pressure to the ceramic powder applies isostatic pressure to the ceramic powder.4. The method claim 3 , as recited in claim 3 , further comprising heating the ceramic powder to a temperature above 1000° C. during at least a period of time during the applying pressure to the ceramic powder.5. The method claim 4 , as recited in claim 4 , wherein the ceramic powder comprises aluminum oxide.6. The method claim 5 , as recited in claim 5 , wherein the ultrasonic energy is applied near the beginning of applying pressure and is terminated before ending the applying pressure.7. The method claim 6 , as recited in claim 6 , wherein the applying ultrasonic energy to the ceramic powder claim 6 , provides an ultrasonic energy power greater than 1 W/cm.8. The method claim ...

Methods for producing solid ceramic particles using a microwave firing process

Methods for producing solid, substantially round, spherical and sintered particles from a slurry of a raw material having an alumina content of greater than about 40 weight percent. The slurry is processed to prepare green pellets which are sintered in a furnace with microwave energy at a temperature of 1480 to 1520° C. to produce solid, substantially round, spherical and sintered particles having an average particle size greater than about 200 microns, a bulk density of greater than about 1.35 g/cm 3 , and an apparent specific gravity of greater than about 2.60.

BORON CARBIDE SINTERED BODY AND ETCHER INCLUDING THE SAME

A boron carbide sintered body includes necked boron carbide-containing particles. The thermal conductivity of the boron carbide sintered body at 400° C. is 27 W/m·K or less and the ratio of the thermal conductivity of the boron carbide sintered body at 25° C. to that of the boron carbide sintered body at 800° C. is 1:0.2 to 1:3. 1. A boron carbide sintered body comprising necked boron carbide-containing particles wherein the thermal conductivity of the boron carbide sintered body at 400° C. is 27 W/m·K or less and the ratio of the thermal conductivity of the boron carbide sintered body at 25° C. to that of the boron carbide sintered body at 800° C. is 1:0.2 to 1:3.2. The boron carbide sintered body according to claim 1 , wherein the particles comprise a particle diameter (D) of 1.5 μm or less.3. The boron carbide sintered body according to claim 1 , wherein the boron carbide sintered body comprises a surface roughness (Ra) of 0.1 μm to 1.2 μm.4. The boron carbide sintered body according to claim 1 , wherein the boron carbide sintered body comprises a porosity of 3% or less.5. The boron carbide sintered body according to claim 1 , wherein the boron carbide sintered body comprises an average surface or cross-sectional pore diameter of 5 μm or less.6. The boron carbide sintered body according to claim 1 , wherein the area of pores comprising an average surface or cross-sectional diameter of 10 μm or more accounts for 5% or less of the area of all pores in the boron carbide sintered body.7. The boron carbide sintered body according to claim 1 , wherein the boron carbide sintered body does not form particles upon contact with fluorine ions or chlorine ions in a plasma etcher.8. The boron carbide sintered body according to claim 1 , wherein the etch rate of the boron carbide sintered body is 55% or less of that of silicon.9. The boron carbide sintered body according to claim 1 , wherein the etch rate of the boron carbide sintered body is 70% or less of that of CVD-SiC.10. ...

High-strength transparent zirconia sintered body, process for producing the same, and uses thereof

Translucent zirconia sintered bodies have had a problem that incorporation of titania improves translucency but lowers mechanical strength. The invention provides: a zirconia sintered body containing titanium oxide, the sintered body containing 6-15 mol % yttria and 3-20 mol % titania and having an in-line transmission of 50% or higher when examined at a sample thickness of 1 mm and a measuring wavelength of 600 nm; and a zirconia sintered body having especially high translucency which is a high-quality transparent zirconia sintered body that contains 3-20 mol % titania and 6-15 mol % yttria and has an in-line transmission, as measured at a wavelength of 600 nm, of 73% or higher and a haze value of 2.0% or less and that is highly translucent and is undimmed (cloudless). The invention further relates to a production process in which a powder having the composition is molded and thereafter subjected to ordinary-pressure primary sintering and hot isostatic pressing (HIP) under specific conditions.

System and Method for Integrated Deposition and Heating

Herein disclosed is a method of manufacturing comprises depositing a composition on a substrate slice by slice to form an object; heating in situ the object using electromagnetic radiation (EMR); wherein said composition comprises a first material and a second material, wherein the second material has a higher absorption of the radiation than the first material. In an embodiment, the EMR has a wavelength ranging from 10 to 1500 nm and the EMR has a minimum energy density of 0.1 Joule/cm 2 . In an embodiment, the EMR comprises UV light, near ultraviolet light, near infrared light, infrared light, visible light, laser, electron beam. In an embodiment, said object comprises a catalyst, a catalyst support, a catalyst composite, an anode, a cathode, an electrolyte, an electrode, an interconnect, a seal, a fuel cell, an electrochemical gas producer, an electrolyser, an electrochemical compressor, a reactor, a heat exchanger, a vessel, or combinations thereof.

CONTROL METHOD FOR VOLUME FRACTION OF MULTISTRUCTURAL ISOTROPIC FUEL PARTICLES IN FULLY CERAMIC MICROENCAPSULATED NUCLEAR FUELS, COMPOSITIONS FOR COATING AND SINTERED BODY OF THE SAME

Provided herein is a control method for volume fraction of multistructural isotropic fuel particles in a fully ceramic microencapsulated nuclear fuel including: preparing a mixture of silicon carbide, sintering additives, and organic binders, producing a coating body by coating multistructural isotropic fuel particles by using the prepared mixture, forming the coating body, and performing pressureless sintering on the formed coating body, wherein volume fraction of multistructural isotropic nuclear fuel particles may be controlled by controlling the coating layer thickness on multistructural isotropic nuclear fuel particles, wherein the coating layer was configured with a mixture of silicon carbide, sintering additives, and organic binders. As described above, stability and tolerance against nuclear fuel related accidents may be significantly enhanced, and advantageous effects of enabling a pressureless sintering procedure to be performed while maximizing volume fraction of the multistructural isotropic fuel particles may be expected. 1. A control method for volume fraction of multistructural isotropic fuel particles in a fully ceramic microencapsulated nuclear fuel pellet , comprising:a step of preparing a mixture of silicon carbide, sintering additives, and organic binders;a step of producing a coating body by coating multistructural isotropic fuel particles by using the prepared mixture;a step of forming the coating body; anda step of performing pressureless sintering on the formed body;wherein volume fraction of multistructural isotropic nuclear fuel particles is controlled by controlling the thickness of coating layer on the multistructural isotropic fuel particles.2. The control method of claim 1 , wherein the sintering additives are configured by including a selection from Aluminum Nitride (AlN) claim 1 , Yttria (YO) claim 1 , Ceria (CeO) claim 1 , and Magnesia (MgO) or Strontia (SrO).3. The control method of claim 1 , wherein the sintering additives are ...

CERAMIC ELECTRONIC DEVICE AND MANUFACTURING METHOD OF THE SAME

A ceramic electronic device includes a multilayer structure having a parallelepiped shape in which a plurality of dielectric layers and a plurality of internal electrode layers are alternately stacked in a vertical direction, the plurality of internal electrode layers being alternately exposed to two end faces of the parallelepiped shape. A side margin section is a section covering edges of the plurality of internal electrode layers in an extension direction toward two side faces of the parallelepiped shape. The side margin section has a structure in which a plurality of dielectric layers, each containing a ceramic as a main component, and a plurality of conductive layers, each containing a metal as a main component, are alternately stacked in the vertical direction. The plurality of conductive layers are respectively spaced and separated from the plurality of internal electrode layers. 1. A ceramic electronic device comprising;a multilayer structure having a parallelepiped shape in which a plurality of dielectric layers and a plurality of internal electrode layers are alternately stacked in a vertical direction, the plurality of internal electrode layers being alternately exposed to two end faces of the parallelepiped shape, a main component of the plurality of dielectric layers being a ceramic,wherein a side margin section is a section covering edges of the plurality of internal electrode layers in an extension direction toward two side faces of the parallelepiped shape,wherein the side margin section has a structure in which a plurality of dielectric layers, each containing a ceramic as a main component, and a plurality of conductive layers, each containing a metal as a main component, are alternately stacked in the vertical direction, andwherein the plurality of conductive layers are respectively spaced and separated from the plurality of internal electrode layers.2. The ceramic electronic device as claimed in claim 1 ,wherein the plurality of conductive layers ...

Oxide superconductor and method for manufacturing same

An oxide superconductor of an embodiment includes an oxide superconducting layer including at least one superconducting region containing barium (Ba), copper (Cu) and a first rare earth element, having a continuous perovskite structure, and having a size of 100 nm×100 nm×100 nm or more, and a non-superconducting region in contact with the at least one superconducting region, containing praseodymium (Pr), barium (Ba), copper (Cu),and a second. rare earth element, having a ratio of a number of atoms of the praseodymium (Pr) to a sum of a number of atoms of the second rare earth element and the number of atoms of the praseodymium (Pr) being 20% or more, having a continuous perovskite structure continuous with the continuous perovskite structure of the superconducting region, and having a size of 100 nm×100 nm×100 nm or more.

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