СПОСОБ ИЗГОТОВЛЕНИЯ ДЕТАЛИ ИЗ ТЕРМОСТОЙКОГО КОМПОЗИТНОГО МАТЕРИАЛА, СПОСОБ ИЗГОТОВЛЕНИЯ ВОЛОКНИСТОЙКОНСТРУКЦИИ, ВОЛОКНИСТАЯ КОНСТРУКЦИЯ, ИЗГОТОВЛЕННАЯ ДАННЫМ СПОСОБОМ, И КОМПОЗИТНЫЙ МАТЕРИАЛ, СОДЕРЖАЩИЙ ДАННУЮ КОНСТРУКЦИЮ

Изобретение относится к технологии получения пористых трехмерных волокнистых конструкций, изготовленных из термостойких или жаростойких волокон, и может быть использовано при изготовлении деталей из термоконструкционного композитного материала. В волокнистую конструкцию встраиваются углеродные нанотрубки путем их выращивания на термостойких волокнах основы. Обогащение деталей из композитного материала углеродными нанотрубками обеспечивает более упорядоченное уплотнение деталей, улучшение механических свойств, теплопроводности, повышение сопротивляемости износу. 5 н. и 26 з.п. ф-лы, 6 ил.

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

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

СПОСОБ ИЗГОТОВЛЕНИЯ ДЕТАЛИ ИЗ ТЕРМОСТОЙКОГО КОМПОЗИТНОГО МАТЕРИАЛА, СПРОСОБ ИЗГОТОВЛЕНИЯ ВОЛОКОННИСТОЙ КОНСТРУКЦИИ, ВОЛОКНИСТАЯ КОНСТРУКЦИЯ, ИЗГОТОЛВЕННАЯ ДАННЫМ СПОСОБОМ, И КОМПОЗИТНЫЙ МАТЕРИАЛ, СОДЕРЖАЩИЙ ДАННУЮ КОНСТРУКЦИЮ

... 1. Способ изготовления пористой трехмерной волокнистой конструкции, содержащей трехмерную основу из упорядоченных термостойких волокон, отличающийся тем, что в волокнистую конструкцию встраивают углеродные нанотрубки, сформированные посредством их выращивания на термостойких волокнах основы после ее пропитки составом, содержащим, по меньшей мере, один катализатор роста углеродных нанотрубок, с обеспечением возможности получения трехмерной конструкции, состоящей из термостойких волокон и обогащенной углеродными нанотрубками. 2. Способ по п.1, отличающийся тем, что включает следующие, выполняемые последовательно, шаги: пропитывают двумерные слои термостойких волокон составом, содержащим, по меньшей мере, один катализатор роста углеродных нанотрубок, формируют трехмерную основу путем наложения друг на друга и скрепления пропитанных двумерных слоев и обеспечивают рост углеродных нанотрубок в пределах трехмерной основы. 3. Способ по п.2, отличающийся тем, что двумерные слои скрепляют друг с ...

КЕРАМИЧЕСКАЯ АНОДНАЯ СТРУКТУРА (ВАРИАНТЫ) И ЕЕ ПРИМЕНЕНИЕ

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

ЭЛЕКТРОДНЫЙ МАТЕРИАЛ И ЕГО ПРИМЕНЕНИЕ ДЛЯ ПОЛУЧЕНИЯ ИНЕРТНОГО АНОДА

Flüssigkeitsphasensinterprozess für Aluminat-Keramiken

Zinkoxid-Sinterkörper und Verfahren zur Herstellung desselben

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

Dielektrische Keramiken und deren Verwendung in einem Monolithischen Kramikkondensator

Dielektrische Keramik, bestehend aus einer Hauptkomponente, die Ba, Ca und Ti enthält und die eine Perowskitstruktur aufweist, dargestellt durch die allgemeine Formel ABO3; einer erste Zusatzkomponente, die R enthält, wobei R mindestens ein Element, ausgewählt aus der Gruppe bestehend aus La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb und Y, ist; einer zweite Zusatzkomponente, die M enthält, wobei M mindestens ein Element, ausgewählt aus der Gruppe bestehend aus Mn, Ni, Co, Fe, Cr, Cu, Mg und V ist; und einer Sinterhilfe, wobei Kristallkörner der dielektrischen Keramik Ca enthalten, und die interkristalline Variation in der durchschnittlichen Ca-Konzentration in jedem Korn 5 % oder mehr beträgt.

High temperature superconductive body containing a superconductor compound containing Cu oxide, and obtained by melt texturing useful in the information and energy transfer sectors, e.g. applied to a ceramic or metal band

High temperature superconductive body containing a superconductor compound containing Cu oxide, and obtained by melt texturing, where the body contains one or more of Ru, Ir, and Rh (group A) and one or more of Zn, Li, Ni, Pd (group B), and the melt textured body consists of a superconductive matrix, containing a region with group A element as an elongated particle, a lamellar structured zone, or a granulate.

Mehrschichtbauelement und Verfahren zur Herstellung

Es wird ein Mehrschichtbauelement angegeben, das ein dielektrisches keramisches Material umfasst, welches sich mit einer Varistorkeramik zu einem erfindungsgemäßen monolithischen Mehrschichtbauelement co-sintern lässt. Das Mehrschichtbauelement umfasst daher eine Schicht einer Varistorkeramik und eine andere Schicht eines Dielektrikums. Beide Schichten können im Mehrschichtbauelement unmittelbar benachbart angeordnet sein. Im Mehrschichtbauelement sind auf oder zwischen den keramischen Schichten Metallisierungen angeordnet, die zu Leiterabschnitten und metallisierten Flächen strukturiert sind. Die Metallisierungen bilden zusammen mit den Keramikschichten neben einem Varistor zumindest ein weiteres Bauelement aus, welches ausgewählt ist aus zumindest einer der Bauelementfunktionen Kapazität, Widerstand und Induktivität.

Piezoelektrisches Material und Ultraschallsonde

NTC-Masse, Thermistor und Verfahren zur Herstellung des Thermistors

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

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

Piezoelektrische Keramik und piezoelektrisches Bauteil

Improvements in or relating to Dielectric Materials with a Stable Dielectric Constant at High Temperature

... 1,156,199. Ordered complex perovskite-type single crystals. UNITED AIRCRAFT CORP. 29 Nov., 1966 [14 Dec., 1965], No. 53273/66. Heading C1A. [Also in Division H1] The invention comprises Ordered complex perovskite-type single crystals, grown in a flux containing fluoride ions, of the general formula in which A is barium or strontium and B1 is. divalent magnesium, calcium, zinc, nickel or cobalt. These are produced by mixing, in proportions to obtain a stoichiometric composition according to the formula given above, powders consisting of a compound from which an oxide AO may be obtained, a divalent metal oxide B10 and Ta 2 O 5 . This mixture is then mixed with a fluoride flux of the formula AF 2 , where A is as above, and heating the mixture to a temperature sufficiently above the melting point of the flux and holding at this temperature for 0À5-8À5 hours then gradually cooling the mixture to effect crystal formation and extracting the crystals from the flux. These materials ...

Low conductivity and sintering-resistant thermal barrier coatings

A thermal barrier coating composition is provided. The composition has a base oxide, a primary stabilizer, and at least two additional cationic oxide dopants. Preferably, a pair of group A and group B defect cluster-promoting oxides is used in conjunction with the base and primary stabilizer oxides. The new thermal barrier coating is found to have significantly lower thermal conductivity and better sintering resistance. In preferred embodiments, the base oxide is selected from zirconia and hafnia. The group A and group B cluster-promoting oxide dopants preferably are selected such that the group A dopant has a smaller cationic radius than the primary stabilizer oxide, and so that the primary stabilizer oxide has a small cationic radius than that of the group B dopant.

Dielectric ceramic composition and laminated ceramic condenser

Method for preparing a SiC whisker-reinforced composite material

The invention provides a method for preparing a SiC whisker-reinforced composite material. A matrix material such as a metal, an alloy or a plastic is introduced into a fibrous base consisting of a SiC whisker sponge-like cake. The resultant structure is compressed into a desired shape as needed. The fibrous base is prepared by heating a mixture of silica gel or ashed rice hulls with a furnace carbon black and an additional amount of NaCl as a space forming agent for forming spaces conducive to whisker growth.

Monolithic ceramic electronic component and ceramic paste

A process for producing a monolithic ceramic electronic components, e.g. a capacitor or inductor includes: forming a plurality of composite structures 6 each comprising a ceramic green sheet 2 produced by shaping a ceramic slurry, internal circuit element films 1 formed by applying a conductive paste partially onto a main surface of the sheet so as to provide step-like sections defining spaces, and a ceramic green layer 5, the layer being formed by applying the ceramic paste onto the surface of the sheet to compensate for the spaces; forming a green laminate from the structures and firing the laminate. The ceramic paste comprises a ceramic powder, an organic solvent and a binder which is a mixture of a cellulose ester and a polyacrylate.

Translucent ceramic with high refractive index

A ceramic material powder for a translucent ceramic is moulded with a binder and the resulting green compact is embedded in a ceramic powder containing at least one element in common with the green compact. The compact embedded in the ceramic powder is heated in an oxidising atmosphere to remove the binder. Thereafter the compact is fired in an oxygen concentration higher than that in the oxidising atmosphere to yield a translucent ceramic. The translucent ceramic has a refractive index of at least 1.9 and is paraelectric, having a perovskite crystal phase as a principal crystal phase. The translucent ceramic may be represented by Formula I: Ba (SnuZr1-u)xMgyTaz vOw, Formula II: Ba(ZrxMgyTaz)vOw or Formula III: Ba (SnuZr1-u)x(ZntMg1-t)yNbz vOw. The ceramic may be used as an optical part.

Monolithic ceramic electronic component and production process therefor, and ceramic paste and production process therefor

NONSTOICHIOMETRIC NIOX CERAMIC(S) TARGET

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

PROCEDURE FOR THE PRODUCTION OF MONOLITHIC HYDRATISIERTEN ALUMINA AND VERBUNDMATERIALEN

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

FERRITE MATERIAL WITH WEAK LOSSES AND LOW SINTERTEMPERATUR, MANUFACTURING PROCESS AND MAGNETIC COMPONENT, WHICH CONTAIN THIS FERRITE MATERIAL

PEROWSKITSTRUKTUR TITANATES OR THEIR DERIVATIVES AND YOUR APPLICATIONS

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

SPHERICAL CERAMIC(S) MOLDED ARTICLES, PROCEDURES FOR YOUR PRODUCTION AS WELL AS THEIR USE

PROCEDURE FOR THE PRODUCTION OF DENTURE

NONSTOICHIOMETRIC NIOX CERAMIC(S) TARGET

NONSTOICHIOMETRIC NIOX CERAMIC(S) TARGET

NONSTOICHIOMETRIC NIOX CERAMIC(S) TARGET

NONSTOICHIOMETRIC NIOX CERAMIC(S) TARGET

NONSTOICHIOMETRIC NIOX CERAMIC(S) TARGET

NONSTOICHIOMETRIC NIOX CERAMIC(S) TARGET

NONSTOICHIOMETRIC NIOX CERAMIC(S) TARGET

NONSTOICHIOMETRIC NIOX CERAMIC(S) TARGET

BLANK AND DENTAL RESTORATION

Blank and dental restoration The invention relates to a pre-sintered or fully-sintered blank for use in preparing a dental restoration, which has regions of different compositions, wherein on first region of a first ceramic material and at least one second region of a second ceramic material are of different compositions and the regions are sited next to one another.

CERAMIC ANODE SOLID OXIDE FUEL CELL

BSAS powder

The invention relates to a powder that contains at least 95% in number of molten grains having the following composition, in mass percent on the basis of oxides and for a total of 100%:- 0 BaO 40.8%, - 0 SrO 31.8%, - 27.2% AI ...

Inert anode for producing aluminium by igneous electrolyse and method for producing said anode

CORDIERITE CERAMICS CONTAINING SIC WHISKER REINFORCEMENT

METHOD OF PRODUCING FERRITE MAGNET FROM LAYED PRECURSOR

Composition for fuel cell electrode

In some examples, a fuel cell including an anode; electrolyte; and cathode separated from the anode by the electrolyte, wherein the cathode includes a Pr-nickelate based material with (Pr ...

Barium titanate dispersions

QUASI-CRYSTALLINE BOEHMITES CONTAINING ADDITIVES

The present invention pertains to a quasi-crystalline boehmite containing additive in a homogeneously dispersed state. Suitable additives are compounds containing elements selected from the group of alkaline earth metals, alkaline metals, transition metals, actinides, silicon, gallium, boron, titanium and phosphorus. Said QCBs according to the invention may be prepared in several ways. In general, a quasi-crystalline boehmite precursor and an additive are converted to a quasi-crystalline boehmite containing the additive in a homogeneously dispersed state. The application is also directed to shaped particles and catalysts comprising the quasi-crystalline boehmite to transition aluminas obtainable from these quasi-crystalline boehmites and to catalyst compositions comprising such transition alumina.

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

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

TRANSIENT EUTECTIC PHASE PROCESS FOR CERAMIC-METAL BONDING, METALLILZATION, AND COMPOSITING

A method for directly joining ceramics (10) and metals (12). The method involves forming a structure having a ceramic component (10), a more refractory metallic component and a less refractory metallic-material-based interlayer (14) disposed between the ceramic component (10) and the metallic component (12); adding a eutectic forming reactant to the metallic interlayer (14); and heating the structure to approximately a eutectic melting temperature of the reactant and the interlayer to form a metallic-material- based eutectic liquid that interacts with the metallic component to form a bond that directly joins the ceramic and metallic components to one another.

COMPOSITIONS FOR HIGH POWER PIEZOELECTRIC CERAMICS

Piezoelectric ceramics of the formula Pb(1-z)MZ (Mg1/3Nb2/3) x (ZryTi1-y) 1- x.OMICRON.3 where M can be either Sr or Ba or both, and x is between 0.3 and 0.6, y is between 0.2 and 0.5, and z is between 0.04 and 0.08. The piezoelectric ceramic is provided as a composite perovskite structure, and may additionally include materials or dopants such as: PbO, HfO2, TeO2, WO3, V2O5, CdO, Tm2O3, Sm2O3, Ni2O3, and MnO2. The piezoelectric ceramics can be used to fabricate piezoelectric elements for a wide variety of devices that can be fabricated to exhibit high power applications including miniaturized displacement elements, buzzers, transducers, ultrasonic sensors and ultrasonic generators, and the like.

PYROLYSIS REACTOR MATERIALS AND METHODS

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

COATED CERAMIC FILLER MATERIALS

Coated ceramic filler materials comprised of ceramic particles, fibers, whiskers, etc. having at least two substantially continuous coatings thereon are provided. The coatings are selected so that the interfacial shear strength between the ceramic filler material and the first coating, between coatings, or between the outer coating and the surrounding matrix material, are not equal so as to permit debonding and pull-out when fracture occurs. The resultant, multi-coated ceramic filler materials may be employed to provide ceramic matrix composites with increased fracture toughness. The ceramic filler materials are designed to be particularly compatible with ceramic matrices formed by directed oxidation of precursor metals.

CERAMIC ANODE SOLID OXIDE FUEL CELL

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

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

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

CATALYST-CONTAINING OXYGEN TRANSPORT MEMBRANE

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

METHOD FOR PRODUCING A BLANK, BLANK AND DENTAL RESTORATION

The invention relates to a method for the preparation of a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a die and wherein the materials are pressed and after pressing are sintered. A layer of the first ceramic material is thereby filled into the die and a first cavity formed in the layer, the second ceramic material is then filled into the first open cavity and the materials pressed together and then heat-treated.

COMPOSITE MATERIALS AND METHOD OF ITS MANUFACTURE

A novel solution route has been developed that after heat-treatment to 500- 600~C under inert atmosphere, yields highly porous composites of nano-sized metal (Ni) particle inclusions in ceramics (Al2O3). Metal loadings could be made from < 1% to >95% Ni. The metal inclusion sizes in the Ni-Al2O3 system with the 10 atom% Ni sample were 4-7 nm, while for the 75 atom% Ni sample they were 5-8 nm. It was shown that the 10 atom% Ni sample could be used as a catalyst for the conversion of CO2 and CH4 in the temperature range 550-700~C, while higher temperatures led to growth of the Ni particles and carbon poisoning over time. The solution routes could also be deposited as thin dense films containing <10 nm Ni particles. Such films with high Ni-particle loadings deposited on aluminium substrates have shown very good solar heat absorber proficiency and provide good substrates for carbon tube growth.

METHOD FOR MAKING METAL OXIDES

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

LAYER STRUCTURE AND USE THEREOF TO FORM A CERAMIC LAYER STRUCTURE BETWEEN AN INTERCONNECT AND A CATHODE OF A HIGH-TEMPERATURE FUEL CELL

The invention relates to a layer structure that is formed between an interconnect and a cathode of a high-temperature fuel cell and that can be used to form a ceramic layer structure between an interconnect and a cathode. The interconnect is made of a metal alloy containing chromium. The aim of the invention is to provide a layer structure between an interconnect and a cathode of a high-temperature fuel cell, by means of which good protective function (against corrosion and against chromium evaporation), high electrical conductivity, and good thermal expansion behavior matched to the materials of an interconnect and of a cathode can be achieved. The layer structure is formed in the green state by a powdery spinel and at least one metal oxide from the group comprising CuO, NiO, CoOx, and MnOx as a sintering additive, and at least one powdery perovskite. Chromium is not contained in any of said chemical compounds. The fraction of contained spinel having the metal oxides as a sintering additive ...

SELF-TOUGHENED HIGH-STRENGTH PROPPANT AND METHODS OF MAKING SAME

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

MOULDED SPHERICAL CERAMIC BODY, PRODUCTION PROCESS AND USE

The present invention concerns a moulded microcrystalline spherical Al2O3sintered body, process for its production as well as its use.

Alumina-based ceramic.

Linvention concerne une céramique à base dalumine, similaire à du rubis et ayant une ténacité élevée. Cette céramique comprend, en poids: de 0,3 à 3,0% dau moins un métal choisi parmi le chrome, le cobalt, le nickel, le manganèse, le vanadium, le titane et le fer; de 0,0005 à 0,3% de magnésium; et de 0,05 à 2% dau moins un élément du groupe des terres rares. Une telle céramique peut trouver des applications, notamment, dans la bijouterie, la joaillerie ou lhorlogerie. Linvention a trait également à un procédé de préparation de cette céramique.

Alumina-based ceramic.

Linvention concerne une céramique à base dalumine, similaire à du rubis et ayant une ténacité élevée. Cette céramique comprend, en poids: de 0,3 à 3,0% dau moins un métal choisi parmi le chrome, le cobalt, le nickel, le manganèse, le vanadium, le titane et le fer; de 0,0005 à 0,3% de magnésium; et de 0,05 à 2% dau moins un élément du groupe des terres rares. Une telle céramique peut trouver des applications, notamment, dans la bijouterie, la joaillerie ou lhorlogerie. Linvention a trait également à un procédé de préparation de cette céramique.

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

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

HIGH EFFECTIVE FUEL ELECTRODE FOR SOLID-OXIDE ELECTROCHEMICAL ELEMENT

ПОРОШОК БАРИЯ-СТРОНЦИЯ-АЛЮМОСИЛИКАТА

В изобретении предложен порошок, имеющий численное процентное содержание по меньшей мере 95% плавленых зерен приведенного ниже химического состава в мас.% на основе оксидов, в сумме 100%: где количество по меньшей мере одного из оксидов ВаО и SrO составляет более чем 0,3%, размер указанных зерен составляет от 5 до 150 мкм.

СПОСОБ ГИДРОТЕРМАЛЬНОГО ЖИДКОСТНО-ФАЗОВОГО СПЕКАНИЯ КЕРАМИЧЕСКИХ МАТЕРИАЛОВ И ПОЛУЧЕННЫЕ ТАКИМ СПОСОБОМ ПРОДУКТЫ

Разработанный способ гидротермального жидкостно-фазового спекания для получения монолитной массы из пористой матрицы, который предусматривает: (i) получения пористой матрицы, имеющей внутреннепоровое пространство, и которая содержит, по меньшей мере, первый реагент; (ii) контакт пористой матрицы с пропитываемой средой, и которая переносит, по меньшей мере, второй реагент; (iii) обеспечение инфильтрации пропитываемой среды, по меньшей мере, в значительную часть внутреннепорового пространства пористой матрицы при условиях, поддерживающих взаимодействие, по меньшей мере, между первым реагентом и по меньшей мере вторым реагентом, чтобы получить, по меньшей мере, первый продукт; и (iv) обеспечение получения, по меньшей мере, первого продукта с заполнением, по меньшей мере, части внутреннего пространства пористой матрицы, с получением таким образом монолитной массы, имеющей взаимосвязанную микроструктуру, где первый продукт содержит спекшуюся керамику без титаната бария.

СПОСОБ ГИДРОТЕРМАЛЬНОГО ЖИДКОФАЗНОГО СПЕКАНИЯ КЕРАМИЧЕСКИХ МАТЕРИАЛОВ И ПОЛУЧАЕМЫЕ ПРИ ЭТОМ ПРОДУКТЫ

Разработан способ получения монолитной массы из пористой матрицы, который включает: (i) получение пористой матрицы, в которой имеется внутрипоровое пространство, и содержащей, по меньшей мере, первый реагент; (ii) контактирование пористой матрицы с просачивающейся средой, которая переносит, по меньшей мере, второй реагент; (iii) обеспечение инфильтрации просачивающейся среды, по меньшей мере, в значительной части внутрипорового пространства пористой матрицы в условиях, которые поддерживают взаимодействие, по меньшей мере, между первым реагентом и, по меньшей мере, вторым реагентом, чтобы получить, по меньшей мере, первый продукт; и (iv) обеспечение получения, по меньшей мере, первого продукта с заполнением по меньшей мере части внутреннего пространства пористой матрицы, с получением таким образом монолитной массы, которая не содержит титаната бария.

СПЕКШИЙСЯ ПРОДУКТ, ПОЛУЧЕННЫЙ ИЗ ШИХТЫ НА ОСНОВЕ ЦИРКОНА

Данное изобретение относится к спекшемуся продукту, который получают из исходной шихты с содержанием 80-99 мас. % циркона, выходя из оксидов, и который имеет следующий средневесовой химический состав, мас. %, исходя из оксидов 60,0 ≤ ZrO2 ≤72,8, 27,0 ≤SiO2 ≤36,0, 0,1 ≤ В2О3+GeO2 + Р2О5+Sb2O3+Nb2O5 + Та2О5+V2O5 ≤ 4,9, 0,1 ≤ZnO+PbO+CdO ≤ 4,9, 0,2 ≤ В2О3+GeO2 + Р2О5+Sb2O3+Nb2O5+Ta2O5+V2O5+ZnO+PbO+CdO ≤ 5,0, 0 < Al2 O3+TiO2+MgO+Fe2O3+NiO+MnO2+CoO+CuO ≤ 5 %, другие оксиды < 1,5 до общего объема 100,0. Преобладающее использование – в стеклоплавильной печи.

СПОСОБ ИЗГОТОВЛЕНИЯ ЛИСТОВОГО неорганического неметаллического материала С ИСПОЛЬЗОВАНИЕМ расплавленного ШЛАКА

Способ изготовления листового неорганического неметаллического материала с использованием расплавленного шлака, который включает: введение расплавленного шлака в накопитель для сохранения тепла и модификации, где температуру расплавленного шлака поддерживают на уровне 1450-1600 °C, и модификацию его вязкости и/или цвета в соответствии с техническими требованиями к продукту, производящих, введение модифицированного расплавленного шлака в печь, где осуществляют процесс флотации с использованием олова или сплава олова в качестве носителя, формирование из этого модифицированного расплавленного шлака листового неорганического неметаллического материала и выгрузки листового неорганического неметаллического материала при 1000-1300 °C, и выдержку листового неорганического неметаллического материала при 600-900 °C в течение 0,5-2 часов в невозобновляемой атмосфере с последующим постепенным охлаждением листового неорганического неметаллического материала до комнатной температуры в пределах 1-2 часов ...

Method for producing aluminum titanate ceramic sintered body, and aluminum titanate ceramic sintered body

NiCuZn ferrite material as well as preparation method and application thereof

Colored sintered zirconia

NBT based lead-free piezoelectric materials for high power applications

Piezoelectric ceramic material resistant to thermal shock and preparation method thereof

Compositions and materials for electronic applications

High dielectric constant very low fired X7R ceramic capacitor, and powder for making

Magnetic ferrite composition and its production method

For lithium manganese oxide composite electrode

Ferrite sintered body and ferrite core and coil component

Method for producing flat plate-shaped inorganic non-metallic material by molten slag

Method for preparing amorphous material and ceramics

Magnetic ferrite powder, magnetic ferrite sinter, layered ferrite part, and process for producing layered ferrite part

POROUS CARBONACEOUS MATRIX FOR STORING HEAT ENERGY

Procédé de préparation de mousses composites carbonées poreuses à partir de saccharose, de nitrate métallique et de poudre de graphite, les mousses obtenues et leur utilisation pour le stockage thermique.

ANODE INERT INTENDED FOR the PRODUCTION Of ALUMINIUM PER IGNEOUS ELECTROLYSIS AND PROCEEDED Of OBTAINING THIS ANODE

NEW CERAMICS USABLE AS a MATERIAL Of ANODE FOR COMBUSTIBLE BATTERY OF TYPE SOFC

FERRITES HAS WEAK LOSSES AND HAS PERMEABILITY ADJUSTMENT FOR APPLICATIONS FORTEPUISSANCE AND BROAD BAND IN RADIO FREQUENCIES (0.5-600 MHZ)

METHOD FOR PREPARING AN ELECTROCHEMICAL HALF-CELL

MATERIAL Of POSITIVE ELECTRODE FOR ACCUMULATOR LITHIUM-ION

CERAMIC TARGET NONSTOECHIOMETRIC NiOx

L'invention a pour objet une cible essentiellement en céramique de dispositif de pulvérisation cathodique, notamment assistée par champ magnétique, ladite cible comprenant majoritairement de l'oxyde de nickel, l'oxyde de nickel NiOx étant déficient en oxygène par rapport à la composition stoechiométrique.

PRODUCT SINTERS ADDITIVE CONTAINING ZIRCON

ELECTRODE FOR SUPERCAPACITOR HAVING MANGANESE OXIDE-CONDUCTING METAL OXIDE COMPOSITE LAYER AND THE FABRICATION METHOD THEREOF, AND SUPERCAPACITOR USING THE SAME

Ferrite Material

PIEZOELECTRIC CERAMIC COMPOSITION, PRODUCTION METHOD THEREOF, PIEZOELECTRIC ELEMENT AND FABRICATION METHOD THEREOF

단열재

... 경량이며 열전도율 증가가 억제된 다공질 소결체로 이루어지는 단열재, 즉, 고온에서의 단열 특성을 유지하면서, 경량이며, 시공시의 핸들링성을 향상시킬 수 있는 단열재를 제공한다. 본 발명의 단열재의 하나의 양태는, 기공률이 70 체적% 이상 91 체적% 미만인 다공질 소결체로 이루어지고, 구멍 직경 0.8 ㎛ 이상 10 ㎛ 미만의 기공이, 전체 기공 체적 중, 10 체적% 이상 70 체적% 이하를 차지하면서, 또한 구멍 직경 0.01 ㎛ 이상 0.8 ㎛ 미만의 기공이, 전체 기공 체적 중, 5 체적% 이상 30 체적% 이하를 차지하고, 상기 다공질 소결체가, MgAl2O4(스피넬) 원료와, 무기 재료로 이루어지는 섬유로 형성된 것이고, 1000℃ 이상 1500℃ 이하에서의 열전도율이 0.40 W/(m·K) 이하이며, 상기 다공질 소결체에 있어서의 Mg에 대한 Si의 중량비가 0.15 이하이다.

CERAMIC MATERIALS, ABRASIVE PARTICLES, ABRASIVE ARTICLES, AND METHODS OF MAKING AND USING THE SAME

Amorphous materials, glass-ceramics and methods of making the same. Embodiments of the invention include abrasive particles. The abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes. © KIPO & WIPO 2007 ...

Dielectric ceramic and laminated ceramic capacitor

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

Negative active materials, lithium ion batteries, and methods thereof

Methods of preparing negative active materials and negative active materials are provided herein. The preparation methods include: A) mixing a carbon material, an organic polymer, a Sn-containing compound—optionally with water—to obtain a mixed solution system; B) adding a complexing agent into the mixed solution system obtained in step A optionally while stirring to form an intermediate solution; C) adding a reducing agent into the intermediate solution obtained in step B to a reaction product; D) optionally filtering, washing and then drying the reaction product to obtain the negative active material.

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

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

Shaded zirconium oxide articles and methods

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

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

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

Semiconductor ceramic composition for ntc thermistors and ntc thermistor

Disclosed is a semiconductor ceramic composition for NTC thermistors, which has low dependency on firing temperatures, reduced variations in the resistance values after a resistance-adjusting operation, and reduced changes in resistance in high-temperature environments. The semiconductor ceramic composition contains Mn, Ni and Fe, wherein the molar ratios of Mn and Ni are in ranges of 70 to 80 mol % and 20 to 30 mol %, respectively, relative to the total content (100 mol %) of Mn and Ni, and the Fe content is in a range of 15 parts by mole to 25 parts by mole, both inclusive, relative to the total molar amount (100 parts by mole) of Mn and Ni. Preferably, Co is additionally present in an amount of 2 parts by mole to 40 parts by mole, both inclusive, relative to the total molar amount (100 parts by mole) of Mn and Ni.

Piezoelectric/electrostrictive element

There is provided a piezoelectric/electrostrictive element 1 comprising a piezoelectric/electrostrictive body 30 made of a piezoelectric/electrostrictive ceramic composition containing Pb(Ni 1/3 Nb 2/3 )O 3 —PbTiO 3 —PbZrO 3 ternary solid solution system composition as the main components, and an electrode disposed on the piezoelectric/electrostrictive body, wherein the ternary solid solution system composition is represented by the following composition formula: (Pb 1-x Sr x ) α {(Ti 1-y Zr y ) a (Ni β/3 Nb 2/3 ) b (Al γ/2 Nb 1/2 ) c }O 3 (where 0.005≦x≦0.03, 0.45≦y≦0.54, 0.58≦a≦0.91, 0.07≦b≦0.36, 0.02≦c≦0.08, 0.97≦α≦1.03, 0.97≦β≦1.03, 0.97≦γ≦1.03, and (a+b+c=1.000)).

Process for producing zinc oxide varistor

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

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.

Dielectric composition and ceramic electronic component including the same

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

Reactor Components

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

Ceramic powder and multi-layer ceramic capacitor

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

Piezoelectric film, ink jet head, method of forming image by the ink jet head, angular velocity sensor, method of measuring angular velocity by the angular velocity sensor, piezoelectric generating element, and method of generating electric power using the piezoelectric generating element

The present invention provides a non-lead piezoelectric film having high crystalline orientation, the low dielectric loss, the high polarization-disappear temperature, the high piezoelectric constant, and the high linearity between an applied electric field and an amount of displacement. The present invention is a piezoelectric film comprising: a Na x La 1-x+y Ni 1-y O 3-x layer having only an (001) orientation and a (1-α) (Bi, Na, Ba) TiO 3 -αBiQO 3 layer having only an (001) orientation. The (1-α) (Bi, Na, Ba) TiO 3 -αBiQO 3 layer is formed on the Na x La 1-x+y Ni 1-y O 3-x layer. The character of Q represents Fe, Co, Zn 0.5 Ti 0.5 , or Mg 0.5 Ti 0.5 The character of x represents a value of not less than 0.01 and not more than 0.05. The character of y represents a value of not less than 0.05 and not more than 0.20. The character of α represents a value of not less than 0.20 and not more than 0.50.

Oxide sintered body and sputtering target

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

Fuel cell components having porous electrodes

An SOFC component includes a first electrode, an electrolyte overlying the first electrode, and a second electrode overlying the electrolyte. The second electrode includes a bulk layer portion and a functional layer portion, the functional layer portion being an interfacial layer extending between the electrolyte and the bulk layer portion of the second electrode, wherein the bulk layer portion has a bimodal pore size distribution.

Alkali niobate-based piezoelectric material and a method for making the same

An alkali niobate-based piezoelectric material having the general formula {(K 1-a Na a ) 1-b Li b }(Nb 1-c-d Ta c Sb d )O 3 +x mol % Ba n TiO 3 +y mol % CuO, where 0≦a≦0.9, 0≦b≦0.3, 0<c≦0.5, 0≦d≦0.1, 0.5≦x≦10.0, 0.1≦y≦8.0, and 0.9≦n≦1.2.

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

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

Heat insulator

One aspect of the heat insulator of the present invention includes a porous sintered body having a porosity of 70 vol % or more and less than 91 vol %, and pores having a pore size of 0.8 μm or more and less than 10 μm occupy 10 vol % or more and 70 vol % or less of the total pore volume, while pores having a pore size of 0.01 μm or more and less than 0.8 μm occupy 5 vol % or more and 30 vol % or less of the total pore volume. The porous sintered body is formed from an MgAl 2 O 4 (spinel) raw material and fibers formed of an inorganic material, the heat conductivity of the heat insulator at 1000° C. or more and 1500° C. or less is 0.40 W/(m·K) or less, and the weight ratio of Si relative to Mg in the porous sintered body is 0.15 or less.

Ceramic material, method for producing the ceramic material, and electroceramic component comprising the ceramic material

The invention relates to a ceramic material, comprising lead zirconate titanate, which additionally contains K and optionally Cu. The ceramic material can be used in an electroceramic component, for example a piezoelectric actuator. The invention also relates to methods for producing the ceramic material and the electronic component.

Dielectric ceramic composition and multilayer ceramic capacitor containing the same

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

Dielectric Ceramic Composition, Method for the Production and Use Thereof

A dielectric ceramic composition, a method for producing a dieelctric composition and the use of the dielectric composition are disclosed. In an embodiment a ceramic composition includes a main component with a quantity ratio Mg(1+x)(1−y)O3+xA(1+x)ySi(1−z)Dz and a remainder comprising contaminants, wherein 0.01×0.30, wherein 0.00≤y≤0.20, and wherein 0.00≤z≤1.00.

CERAMIC CAPACITOR DIELECTRIC MATERIAL

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

METHOD OF DEPOSITING NANOSCALE MATERIALS WITHIN A NANOFIBER NETWORK AND NETWORKED NANOFIBERS WITH COATING

Provided herein is a method of making a conductive network by combining uncoated carbon nanotubes and carbon nanotubes coated with an electroactive substance to create an electrically conductive network; and redistributing at least a portion of the electroactive substance. Also provided herein is an electrically conductive network with an active material coating; first carbon nanotubes coated with the active material coating; and second carbon nanotubes partially coated with the active material coating, wherein at least a portion of the surfaces of the second carbon nanotubes directly contact surfaces of other second carbon nanotubes without the active material coating between these second carbon nanotubes, and wherein the first carbon nanotubes and the second carbon nanotubes are entangled to form an electrically conductive network. 1. A method of making a conductive network , comprising the steps of:(a) Combining uncoated carbon nanotubes and coated carbon nanotubes coated with an electroactive substance to create an electrically conductive network; and(b) redistributing at least a portion of the electroactive substance.2. The method of claim 1 , wherein the combining uncoated carbon nanotubes and the coated carbon nanotubes coated with an electroactive substance to create an electrically conductive network comprises:entangling the uncoated carbon nanotubes and the carbon nanotubes with the electroactive substance such that the entanglement creates an electrically conductive network of uncoated carbon nanotubes entangled with coated carbon nanotubes coated with the electroactive substance.3. The method of claim 1 , wherein the electroactive substance comprises a chemically active nanoscale solid substance.4. The method of claim 1 , wherein the redistributing at least a portion of the electroactive substance comprises:removing a portion of the electroactive substance from the coated carbon nanotubes coated with the electroactive substance into a solution, and ...

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 ( ...

Ni-zn-cu-based ferrite particles, green sheet comprising the ni-zn-cu-based ferrite particles and ni-zn-cu-based ferrite sintered ceramics

An object of the present invention is to provide a ferrite material that is excellent in temperature characteristic and DC superimposition characteristic. The present invention relates to Ni—Zn—Cu-based ferrite particles comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite having a specific composition, 1 to 20% by weight of nickel oxide, 0 to 20% by weight of zinc oxide and 1 to 10% by weight of copper oxide, and a ferrite sintered ceramics obtained by sintering the ferrite particles.

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.

METHOD FOR PRODUCING A BLANK, BLANK AND A DENTAL RESTORATION

The invention relates to a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a die and wherein the materials are pressed and after pressing are sintered. A layer of the first ceramic material is thereby filled into the die and a first cavity formed in the layer, the second ceramic material is then filled into the first open cavity and the materials pressed together and then heat-treated. 1. A pre-sintered or fully-sintered blank for use in preparing a dental restoration , the blank comprising regions of different compositions , wherein one first region of a first ceramic material and at least one second region of a second ceramic material are of different compositions and the regions are sited next to one another , wherein the ceramic materials contain zirconium dioxide doped with yttrium oxide (YO) , calcium oxide (CaO) , magnesium oxide (MgO) and/or ceroxide (CeO) , and wherein the first ceramic material differs from the material of the second ceramic material in terms of color and proportions of stabilized crystal forms present at room temperature , and wherein the at least one second region extends within the first region and has an external geometry that tapers from a base region or a base surface.2. The blank according to claim 1 , wherein the base region or the base surface of the at least one second region extends in the region of an outer surface of the first region.3. The blank according to claim 1 , wherein the at least one second region starting from its base region or base surface has a cavity.4. The blank according to claim 1 , wherein the at least one second region has a conus-like geometry on its outer side.5. The blank according of claim 1 , wherein the at least one second region includes a third region extending at least partially therein claim 1 , the third region including a third ceramic material having a composition different from that of the first and/or ...

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

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

Ceramic Material, Varistor, and Method for Producing the Ceramic Material and the Varistor

In an embodiment a ceramic material includes ZnO as main constituent, Y as a first additive, second additives including at least one compound containing a metal element, wherein the metal element is selected from the group consisting of Bi, Cr, Co, Mn, Ni and Sb, Si as a first dopant and second dopants having at least one compound containing a metal cation from Al, B, or Ba, wherein a corresponds to a molar proportion of Bi calculated as BiO, b corresponds to a molar proportion of Y calculated as YO, c corresponds to a molar proportion of Al calculated as AlO, d corresponds to a molar proportion of Ba calculated as BaO, e corresponds to a molar proportion of B calculated as BO, f corresponds to a molar proportion of Si calculated as SiO, g corresponds to a molar proportion of Ni calculated as NiO, h corresponds to a molar proportion of Co calculated as CoO, i corresponds to a molar proportion of Cr calculated as CrO, j corresponds to a molar proportion of Sb calculated as SbO, and k corresponds to a molar proportion of Mn calculated as MnO. 115-. (canceled)16. A ceramic material comprising:ZnO as main constituent;Y as a first additive;second additives comprising at least one compound containing a metal element, wherein the metal element is selected from the group consisting of Bi, Cr, Co, Mn, Ni and Sb;{'sup': '4+', 'Si as a first dopant; and'}{'sup': 3+', '3+', '2+, 'second dopants comprising at least one compound containing a metal cation from Al, B, or Ba,'}{'sub': 2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '4', '2', '3', '2', '3', '3', '4, 'wherein a corresponds to a molar proportion of Bi calculated as BiO, b corresponds to a molar proportion of Y calculated as YO, c corresponds to a molar proportion of Al calculated as AlO, d corresponds to a molar proportion of Ba calculated as BaO, e corresponds to a molar proportion of B calculated as BO, f corresponds to a molar proportion of Si calculated as SiO, g corresponds to a molar proportion of Ni calculated ...

PIEZOELECTRIC CERAMIC ELECTRONIC COMPONENT AND METHOD FOR MANUFACTURING THE SAME

A piezoelectric ceramic base body that has a polyhedral shape having shape anisotropy, such as a rectangular parallelepiped shape, and which has opposed faces on which external electrodes are formed. The opposed faces have first sides and second sides. Between the first side and the second side of one of the opposed faces, a width dimension of the surface in a direction orthogonal to the first side and the second side is larger than a length dimension of each of the first and the second sides. The crystal axis is {100} oriented in a direction parallel to the first and the second sides, and a degree of orientation by a Lotgering method is 0.4 or more. 1. A piezoelectric ceramic electronic component comprising:a piezoelectric ceramic base body which contains a composite oxide having a perovskite type crystal structure as a primary component, the piezoelectric ceramic base body having at least one pair of opposed faces; anda pair of external electrodes adjacent respective surfaces of the opposed faces,wherein the piezoelectric ceramic base body has a polyhedral shape having shape anisotropy,the respective surfaces of the opposed faces each have at least a first side and a second side parallel to each other,between the first side and the second side of one of the surfaces of the opposed faces, a width dimension in a direction orthogonal to the first side and the second side is larger than a length dimension of each of the first side and the second side,a crystal axis of the piezoelectric ceramic base body is {100} oriented in a direction parallel or approximately parallel to the first side and the second side, anda degree of orientation by a Lotgering method is 0.4 or more.2. The piezoelectric ceramic electronic component according to claim 1 , wherein the polyhedral shape of the piezoelectric ceramic base body is a rectangular parallelepiped shape.3. The piezoelectric ceramic electronic component according to claim 1 , wherein the opposed faces of the piezoelectric ...

CATHODE MATERIAL AND FUEL CELL

A cathode material used in an anode and a cathode contains (Co,Fe)Oand a perovskite type oxide that is expressed by the general formula ABOand includes at least one of La and Sr at the A site. A content ratio of (Co,Fe)Oin the cathode material is at least 0.23 wt % and no more than 8.6 wt %. 1. A cathode material containing (Co ,Fe)Oand a perovskite type oxide , the perovskite type oxide being expressed by the general formula ABOand including at least one of La and Sr at the A site , wherein{'sub': 3', '4, 'a content ratio of (Co,Fe)Ois at least 0.23 wt % and no more than 8.6 wt %.'}2. The cathode material according to claim 1 , wherein the perovskite type oxide is LSCF.3. The cathode material according to claim 1 , wherein a content ratio of the perovskite type oxide is 91.4 wt % or more.4. The cathode material according to claim 1 , wherein the (Co claim 1 ,Fe)Ois at least one selected from the group consisting of CoFeO claim 1 , CoFeOand CoFeO. This application is a divisional application of U.S. patent application Ser. No. 14/819,572 filed on Aug. 6, 2015, which is a continuation application of International Application No. PCT/JP2014/059861, filed Apr. 3, 2014, which claims priority to Japanese Application No. 2013-084154, filed in Japan on Apr. 12, 2013, the contents of each of which is hereby incorporated herein by reference.The present invention relates to a cathode material and a fuel cell.In recent years, fuel cell batteries have attracted attention in light of effective use of energy resources and environmental problems. A fuel cell includes a fuel battery cell and an interconnector. A fuel cell generally includes an anode, a cathode and a solid electrolyte layer that is disposed between the anode and the cathode.A widely known configuration for the raw material of the cathode is a perovskite type oxide such as LSCF. (For example, reference is made to Japanese Patent Application Laid-Open No. 2006-32132).However, repetitive use of the fuel cell for power ...

METHOD OF DEPOSITING NANOSCALE MATERIALS WITHIN A NANOFIBER NETWORK AND NETWORKED NANOFIBERS WITH COATING

Provided herein is a method of manufacturing a nanoscale coated network, which includes providing nanofibers, capable of forming a network in the presence of a liquid vehicle and providing a nanoscale solid substance in the presence of the liquid vehicle. The method may also include forming a network of the nanofibers and the nanoscale solid substance and redistributing at least a portion of the nanoscale solid substance within the network to produce a network of nanofibers coated with the nanoscale solid substance. Also provided herein is a nanoscale coated network with an active material coating that is redistributed to cover and electrochemically isolate the network from materials outside the network. 18-. (canceled)9. A method of coating a network , comprising:providing a network of nanofibers in the presence of a liquid vehicle;providing a nanoscale solid substance on or in the network; andredistributing at least a portion of the nanoscale solid substance within the network.10. The method of claim 9 , wherein the providing the network of nanofibers comprises providing a network of carbon nanotubes.11. The method of claim 9 , wherein the providing the network of nanofibers comprises: providing a dispersion of carbon nanotubes in a liquid vehicle; and', 'removing the liquid vehicle to provide a conductive network of carbon nanotubes as the network of nanofibers., 'forming a conductive network of carbon nanotubes by12. The method of claim 9 , coating one or more carbon nanotubes with nanoscale solid substance to form one or more coated carbon nanotubes;', 'providing non-coated carbon nanotubes, and, 'providing a conductive network of one or more carbon nanotubes in electrical contact with one or more other carbon nanotubes comprises, 'wherein the providing the network of nanofibers comprises 'redistributing at least a portion of the nanoscale solid substance by moving nanoscale solid substance from the one or more coated carbon nanotubes to the non-coated carbon ...

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.

Methods of preparing novel enhanced high q material compositions

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

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF PRODUCING THE SAME

A positive electrode active material for a non-aqueous electrolyte secondary battery includes secondary particles of a lithium transition metal complex oxide as a main component. The main component is represented by a formula: Li(NiCo)MnBPSO, where t, x, y, α, β, and γ satisfy inequalities of 0≦x≦1, 0.00≦y≦0.50, (1−x)·(1−y)≧y, 0.000≦α≦0.020, 0.000≦β≦0.030, 0.000≦γ≦0.030, and 1+3α+3β+2γ≦t≦1.30, and satisfy at least one of inequalities of 0.002≦α, 0.006≦β, and 0.004≦γ. The secondary particles exhibit a pore distribution, where a pore volume Vp(1) having a pore diameter of not less than 0.01 μm and not more than 0.15 μm satisfies an inequality of 0.035 cm/g≦Vp(1) and where a pore volume Vp(2) having a pore diameter of not less than 0.01 μm and not more than 10 μm satisfies an inequality of Vp(2)≦0.450 cm/g. 1. A positive electrode active material for a non-aqueous electrolyte secondary battery comprising secondary particles of a lithium transition metal complex oxide as a main component represented by a formula: Li(NiCo)MnBPSO , wherein t , x , y , α , β , and γ satisfy inequalities of 0≦x≦1 , 0.00≦y≦0.50 , (1−x)·(1−y)≧y , 0.000≦α≦0.020 , 0.000≦β≦0.030 , 0.000≦γ≦0.030 , and 1+3α+3β+2γ≦t≦1.30 , and satisfy at least one of inequalities of 0.002≦α , 0.006≦β , and 0.004≦γ ,{'sup': 3', '3, 'wherein the secondary particles exhibit a pore distribution, where a pore volume Vp(1) having a pore diameter of not less than 0.01 μm and not more than 0.15 μm satisfies an inequality of 0.035 cm/g≦Vp(1) and where a pore volume Vp(2) having a pore diameter of not less than 0.01 μm and not more than 10 μm satisfies an inequality of Vp(2)≦0.450 cm/g.'}2. The positive electrode active material for the non-aqueous electrolyte secondary battery according to claim 1 , wherein x and y satisfy an inequality of 0.35≦(1−x)·(1−y)≦0.60.3. A method of producing a positive electrode active material for a non-aqueous electrolyte secondary battery comprising secondary particles of a lithium transition ...

Ferrite ceramic composition, ceramic electronic component, and process for producing ceramic electronic component

This disclosure provides a ferrite ceramic composition, a ceramic electronic component including the ceramic composition, and a process of producing a ceramic electronic component including the ferrite ceramic composition, of which the insulation performance can be secured even when fired simultaneously with a metal wire material containing Cu as the main component, and which can have good electric properties. The ferrite ceramic composition includes an Ni—Mn—Zn-based ferrite having a molar content of CuO of 5 mol % or less and in which, when the molar content (x) of Fe 2 O 3 and the molar content (y) of Mn 2 O 3 are expressed by a coordinate point (x,y), the coordinate point (x,y) is located in an area bounded by coordinate points A (25,1), B (47,1), C (47,7.5), D (45,7.5), E (45,10), F (35,10), G (35,7.5) and H (25,7.5).

FERRITE SINTERED BODY AND COIL COMPONENT

A ferrite sintered body contains Fe, Mn, Zn, Cu, and Ni. Supposing that Fe, Mn, Zn, Cu, and Ni are converted into FeO, MnO, ZnO, CuO, and NiO, respectively, and the sum of the contents of FeO, MnO, ZnO, CuO, and NiO is 100 mol %, the sum of the contents of FeOand MnOis 48.47 mol % to 49.93 mol %, the content of MnOis 0.07 mol % to 0.37 mol %, the content of ZnO is 28.95 mol % to 33.50 mol %, and the content of CuO is 2.98 mol % to 6.05 mol %. Furthermore, 102 ppm to 4,010 ppm Zr in terms of ZrOand 10 ppm to 220 ppm Al in terms of AlOare contained per 100 parts by weight of the sum of the amounts of contained FeO, MnO, ZnO, CuO, and NiO. 1. A ferrite sintered body containing:Fe;Mn;Zn;Cu; andNi,{'sub': 2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3, 'wherein when Fe, Mn, Zn, Cu, and Ni are converted into FeO, MnO, ZnO, CuO, and NiO, respectively, and a sum of contents of FeO, MnO, ZnO, CuO, and NiO is 100 mol %, a sum of the contents of FeOand MnOis 48.47 mol % to 49.93 mol %, the content of MnOis 0.07 mol % to 0.37 mol %, the content of ZnO is 28.95 mol % to 33.50 mol %, and the content of CuO is 2.98 mol % to 6.05 mol %,'}{'sub': 2', '2', '3', '2', '3', '2', '3, '102 ppm to 4,010 ppm Zr in terms of ZrOand 10 ppm to 220 ppm Al in terms of AlOare further contained per 100 parts by weight of a sum of amounts of contained FeO, MnO, ZnO, CuO, and NiO, and'}in a cross section of the ferrite sintered body, an area fraction of pores and an area fraction of segregations containing Cu are 2.0% or less.2. The ferrite sintered body according to claim 1 , further containing:P, Cr, and S.3. The ferrite sintered body according to claim 1 , further containing:{'sub': 2', '5, '5 ppm to 50 ppm P in terms of PO;'}{'sub': 2', '3, '10 ppm to 305 ppm Cr in terms of CrO; and'}{'sub': 2', '3', '2', '3, '5 ppm to 108 ppm S per 100 parts by weight of the sum of the amounts of contained FeO, MnO, ZnO, CuO, and NiO, wherein in a cross section of the ferrite sintered body, ...

Piezoelectric composition and piezoelectric element

A piezoelectric composition containing: a complex oxide having a perovskite structure represented by a general formula of ABO3; copper; and one or more elements selected from the group consisting of chromium, nickel and zinc, in which in ABO3, an A-site element is potassium and a B-site element is niobium, or niobium and tantalum, with respect to 1 mol of the complex oxide, a content ratio of the copper is α mol % in terms of CuO, a content ratio of one or more elements selected from the group consisting of chromium, nickel and zinc is β mol % in terms of CrO3/2, NiO, ZnO, α satisfies a relationship of 0.2≤α≤2.5, and β satisfies a relationship of 0.2≤β≤2.0.

LTCC Dielectric Compositions And Devices Having High Q Factors

LTCC devices are produced from dielectric compositions Include a mixture of precursor materials that, upon firing, forms a dielectric material having a zinc-lithium-titanium oxide or silicon-strontium-copper oxide host.

MODIFIED NI-ZN FERRITES FOR RADIOFREQUENCY APPLICATIONS

Embodiments disclosed herein relate to using cobalt (Co) to fine tune the magnetic properties, such as permeability and magnetic loss, of nickel-zinc ferrites to improve the material performance in electronic applications. The method comprises replacing nickel (Ni) with sufficient Cosuch that the relaxation peak associated with the Cosubstitution and the relaxation peak associated with the nickel to zinc (Ni/Zn) ratio are into near coincidence. When the relaxation peaks overlap, the material permeability can be substantially maximized and magnetic loss substantially minimized. The resulting materials are useful and provide superior performance particularly for devices operating at the 13.56 MHz ISM band. 120-. (canceled)21. A material for radiofrequency applications , the material comprising:a single-phase modified Ni—Zn ferrite formed from a base Ni—Zn ferrite, the single-phase modified Ni—Zn ferrite including elements Ni, Zn, Co, Fe, and O, and having a spinel crystal structure and magnetic Q of greater than 100.22. The material of wherein the single-phase modified Ni—Zn ferrite has a composition NiCoZnFeO.23. The material of wherein the single-phase modified Ni—Zn ferrite has a permeability of 54.24. The material of wherein the base Ni—Zn ferrite has the formula NiZnFeO.25. The material of wherein the single-phase modified Ni—Zn ferrite is configured for use in the 13.56 MHz ISM band.26. The material of wherein the single-phase modified Ni—Zn ferrite is configured for use in the 27 MHz ISM band.27. The material of wherein the single-phase modified Ni—Zn ferrite further includes Mn.28. A radiofrequency device selected from the group consisting of radio-frequency identification tags claim 21 , biomedical sensors claim 21 , and radiofrequency antennas including the radiofrequency material of .29. A radiofrequency antenna claim 21 , the antenna being formed from a nickel zinc ferrite comprising:a single-phase modified Ni—Zn ferrite, the single-phase modified Ni—Zn ...

ZINC OXIDE VARISTOR CERAMICS

Provided according to embodiments of the invention are varistor ceramic formulations that include zinc oxide (ZnO). In particular, varistor ceramic formulations of the invention may include dopants including an alkali metal compound, an alkaline earth compound, an oxide of boron, an oxide of aluminum, or a combination thereof. Varistor ceramic formulations may also include other metal oxides. Also provided according to embodiments of the invention are varistor ceramic materials formed by sintering a varistor ceramic formulation according to an embodiment of the invention. Further provided are varistors formed from such ceramic materials and methods of making such materials. 125.-. (canceled)26. A method of preparing a ceramic material , the method comprising:providing a formulation comprising zinc oxide (ZnO) and at least one minor dopant, wherein the minor dopant comprises an alkali metal compound, an alkaline earth compound, or a combination thereof; andheating the formulation at a temperature in a range of about 1100° C. to about 1200° C. in an atmosphere including oxygen to produce the ceramic material.27. The method of claim 26 , further comprising claim 26 , after heating the formulation claim 26 , cooling the ceramic material to a temperature of about 850° C. at a first cooling rate of at least about 15° C./min.28. The method of claim 26 , further comprising cooling the ceramic material at a second cooling rate of less than about 3° C./min claim 26 , wherein the second cooling rate is applied after the first cooling rate.29. The method of claim 26 , wherein the formulation is homogenized as a slurry.30. The method of claim 26 , further comprising claim 26 , prior to heating the formulation claim 26 , pressing the formulation into a formed object claim 26 , and wherein heating the formulation comprises heating the formed object.31. The method of claim 26 , further comprising metallizing the ceramic material with at least one metal electrode.32. The method of ...

VARISTOR COMPOSITION AND MULTILAYER VARISTOR

A varistor composition free of Sb comprising: (a) ZnO; (b) B—Bi—Zn—Pr glass, or B—Bi—Zn—La glass, or a mixture thereof; (c) a cobalt compound, a chromium compound, a nickel compound, a manganese compound, or mixtures thereof; (d) SnO; and (e) an aluminum compound, a silver compound, or a mixture thereof. By adjusting the ratio between the components, the varistor composition may be made into a multilayer varistor with inner electrodes having a low concentration of noble metals at a sintering temperature less than 1200° C. The multilayer varistor made from the varistor composition has good maximum surge current, good ESD withstand ability, and low fabrication cost. 1. A varistor composition free of Sb comprising:zinc oxide;a first additive selected from the group consisting of: boron-bismuth-zinc-praseodymium glass, boron-bismuth-zinc-lanthanum glass, and a mixture thereof;a second additive selected from the group consisting of: a cobalt compound, a chromium compound, a nickel compound, a manganese compound, and mixtures thereof;a third additive comprising tin dioxide; anda fourth additive selected from the group consisting of: an aluminum compound, a silver compound, and a mixture thereof;wherein based on the total weight of the varistor composition, the total content of the first additive ranges from 0.05 wt % to 20 wt %, the individual content of the second additive ranges from 0.1 wt % to 5.0 wt %, the content of the third additive ranges from 0.1 wt % to 1.5 wt %, and the individual content of the fourth additive ranges from 0.001 wt % to 1.0 wt %.2. The varistor composition free of Sb as claimed in claim 1 , wherein the cobalt compound of the second additive is selected from the group consisting of: a cobalt oxide claim 1 , cobalt hydroxide claim 1 , a percobaltate claim 1 , cobalt carbonate claim 1 , cobalt phosphate claim 1 , and mixtures thereof;the chromium compound of the second additive is selected from the group consisting of: a chromium oxide, a ...

DIELECTRIC MATERIAL AND ELECTRONIC COMPONENT

A dielectric material having a rutile crystalline structure includes Ti as a major constituent metal element, and, as metal elements other than Ti, a metal element M1 which includes at least one selected from among Ni, Co, and elements belonging to Group 2 according to a periodic table, and a metal element M2 which includes at least one selected from among elements belonging to Group 5 and Group 6 in the periodic table, and, on a basis of a total amount of Ti, the metal element M1, and the metal element M2, a molar ratio x of the metal element M1 is in a range of 0.005 to 0.025 and a molar ratio y of the metal element M2 is in a range of 0.010 to 0.050. 1. A dielectric material having a rutile crystalline structure , comprising:Ti as a major constituent metal element; andas metal elements other than Ti, a metal element M1 which includes at least one selected from among Ni, Co, and elements belonging to Group 2 according to a periodic table, and a metal element M2 which includes at least one selected from among elements belonging to Group 5 and Group 6 in the periodic table,on a basis of a total amount of Ti, the metal element M1, and the metal element M2, a molar ratio x of the metal element M1 being in a range of 0.005 to 0.025 and a molar ratio y of the metal element M2 being in a range of 0.010 to 0.050.2. The dielectric material according to claim 1 ,wherein, in a cathode luminescence spectrum, an intensity I1 of a peak which appears at wavelengths ranging from 400 to 600 nm is greater than an intensity I2 of a peak which appears at wavelengths ranging from 700 to 1000 nm.3. The dielectric material according to claim 1 ,wherein the metal element M1 includes at least one of Mg, Ni, and Co, and the metal element M2 includes at least one of Nb and Ta.4. The dielectric material according to claim 1 ,wherein the metal element M1 is Ca, and the metal element M2 is W.5. The dielectric material according to claim 3 ,wherein the molar ratio x falls in a range of 0.008 to ...

Ceramic Material, Varistor and Methods of Preparing the Ceramic Material and the Varistor

A ceramic material, a varistor and methods for forming a ceramic material and a varistor are disclosed. In an embodiment, a ceramic material includes ZnO as a main component and additives selected from the group consisting of an Al-containing solution, a Ba-containing solution, and at least one compound containing a metal element, wherein the metal element is selected from the group consisting of Bi, Sb, Co, Mn, Ni, Y, and Cr. 114-. (canceled)15. A ceramic material comprising:ZnO as a main component; and{'sup': 3+', '2+, 'additives selected from the group consisting of an Al-containing solution, a Ba-containing solution, and at least one compound containing a metal element,'}wherein the metal element is selected from the group consisting of Bi, Sb, Co, Mn, Ni, Y, and Cr.16. The ceramic material according to claim 15 , wherein a content of the additives in the ceramic material is ≤5 mol %.17. The ceramic material according to claim 15 ,{'sub': 1', '3', '4', '3', '4', '2', '3', '2', '2', '3', '2', '3', '1', '2', '3', '2, 'sup': 3+', '2+, 'wherein cis the equivalent content of Co in CoO, m is the equivalent content of Mn in MnO, s is the equivalent content of Sb in SbO, cis the equivalent content of Cr in CrO, a is the content of Al, y is the equivalent content of Y in YO, bis the equivalent content of Bi in BiO, n is the equivalent content of Ni in NiO, bis the content of Ba, and z is the content of ZnO, and'}wherein{'sub': '1', '0.4 mol %≤b≤0.55 mol %,'}1.10 mol %≤s≤1.90 mol %,{'sub': '1', '0.50 mol %≤c≤0.80 mol %,'}0.20 mol %≤m≤0.30 mol %,0.70 mol %≤n≤1.20 mol %,0.25 mol %≤y≤0.45 mol %,{'sub': '2', '0.00 mol %≤c≤0.10 mol %,'}0.003 mol %≤a≤0.006 mol %, and{'sub': '2', '0.005 mol %≤b≤0.015 mol %.'}18. The ceramic material according to claim 17 , wherein (c+5c+2s+4y−m−250a)(1−z)/b=F and 0.27≤F≤0.43.19. The ceramic material according to claim 15 , wherein the at least one compound is selected from the group consisting of metal oxides claim 15 , metal carbonates claim 15 ...

Electrochemical cell

The electrochemical cell has an anode, a cathode, and a solid electrolyte layer. The cathode contains a perovskite oxide expressed by the general formula ABO 3 and including at least one of Sr and La at the A site as a main component. The solid electrolyte layer is disposed between the anode and the cathode. The cathode includes a solid electrolyte layer-side region within 3 μm from a surface of the solid electrolyte layer side. The solid electrolyte layer-side region includes a main phase which is configured by the perovskite oxide and a second phase which is configured by CO 3 O 4 and (Co, Fe) 3 O 4 . An occupied surface area ratio of the second phase in a cross section of the solid electrolyte layer-side region is less than or equal to 10.5%.

SINTERED NI FERRITE BODY, COIL DEVICE, AND METHOD FOR PRODUCING SINTERED NI FERRITE BODY

A sintered Ni ferrite body having a composition comprising, calculated as oxide, 47.0-48.3% by mol of FeO, 14.5% or more and less than 25% by mol of ZnO, 8.2-10.0% by mol of CuO, and more than 0.6% and 2.5% or less by mol of CoO, the balance being NiO and inevitable impurities, and having an average crystal grain size of more than 2.5 μm and less than 5.5 μm. 1. A sintered Ni ferrite body having a composition comprising , calculated as oxide , 47.0-48.3% by mol of FeO , 14.5% or more and less than 25% by mol of ZnO , 8.2-10.0% by mol of CuO , and more than 0.6% and 2.5% or less by mol of CoO , the balance being NiO and inevitable impurities , and having an average crystal grain size of more than 2.5 μm and less than 5.5 μm.2. The sintered Ni ferrite body according to claim 1 , wherein less than 4 parts by mass of Sn calculated as SnO claim 1 , based on 100 parts by mass of the total amount of FeO claim 1 , ZnO claim 1 , CuO claim 1 , CoO and NiO claim 1 , is contained.3. The sintered Ni ferrite body according to claim 1 , which has a composition comprising claim 1 , calculated as oxide claim 1 , 47.3-48.2% by mol of FeO claim 1 , 14.8-24.8% by mol of ZnO claim 1 , 8.3-9.5% by mol of CuO claim 1 , and 0.65-2.4% by mol of CoO claim 1 , the balance being NiO and inevitable impurities.4. The sintered Ni ferrite body according to claim 1 , wherein said sintered Ni ferrite body has a density of 4.85 g/cmor more.5. The sintered Ni ferrite body according to claim 1 , wherein said sintered Ni ferrite body has core loss Pcv20 of 1800 kW/mor less at 20° C. and core loss Pcv100 of 3000 W/mor less at 100° C. claim 1 , at a frequency of 5 MHz and at an exciting magnetic flux density of 20 mT.6. The sintered Ni ferrite body according to claim 5 , wherein the minimum temperature of core loss Pcv is less than 80° C.7. The sintered Ni ferrite body according to claim 5 , wherein a core loss change ratio Ps calculated by the following formula (1):{'br': None, 'i': Ps', 'Pcv', 'Pcv', ' ...

FERRITE SINTERED PLATE AND FERRITE SINTERED SHEET

The present invention relates to a ferrite sintered plate having a composition comprising 47 to 50 mol % of FeO, 7 to 26 mol % of NiO, 13 to 36 mol % of ZnO, 7 to 12 mol % of CuO and 0 to 1.5 mol % of CoO, as calculated in terms of the respective oxides, in which the ferrite sintered plate has a volume resistivity of 1×10to 1×10·cm and a thickness of 10 to 60 μm; and a ferrite sintered sheet comprising the ferrite sintered plate on a surface of which a groove or grooves are formed, and an adhesive layer and/or a protective layer formed on the ferrite sintered plate, in which the ferrite sintered sheet has a magnetic permeability at 500 kHz a real part of which is 120 to 800 and an imaginary part of which is 0 to 30, and a product (μm) of the real part of the magnetic permeability at 500 kHz of the ferrite sintered sheet and a thickness of the ferrite sintered plate is 5000 to 48000. The ferrite sintered plate and the ferrite sintered sheet according to the present invention have a high volume resistivity as well as a large μ′ value and a small μ″ value of a magnetic permeability thereof, and therefore can be suitably used as a shielding plate in a digitizer system. 1. A ferrite sintered plate which has a composition comprising 47 to 50 mol % of FeO , 7.0 to 26 mol % of NiO , 13 to 36 mol % of ZnO , 7.0 to 12 mol % of CuO and 0 to 1.5 mol % of CoO , as calculated in terms of the respective oxides , which has a volume resistivity of 1×10to 1×10Ωcm and which has a thickness of 10 to 60 μm.2. The ferrite sintered plate according to claim 1 , wherein the ferrite sintered plate has a magnetic permeability at 500 kHz a real part of which is 160 to 1200 and an imaginary part of which is 0 to 90.3. The ferrite sintered plate according to claim 1 , wherein a product (μm) of the real part of the magnetic permeability at 500 kHz of the ferrite sintered plate and a thickness of the ferrite sintered plate is 7500 to 72000.4. The ferrite sintered plate according to claim 1 , ...

METHOD FOR SYNTHESIZING CERAMIC COMPOSITE POWDER AND CERAMIC COMPOSITE POWDER

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

Module

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

COIL DEVICE AND ANTENNA

A coil device comprising a coil, and a ferrite core arranged in a hollow portion of the coil, and a resin covering them; the ferrite core being a Ni ferrite core having initial permeability μi of 450 or more at a frequency of 100 kHz and a temperature of 20° C., and an average crystal grain size of 5-9 μm, both of temperature-dependent inductance change ratios TLa and TLb and stress-dependent inductance change ratios PLa and PLb being −0.6% to +0.6%, and both of the sum of TLa and PLa and the sum of TLb and PLb being more than −1.0% and less than +1.0%; and an antenna comprising it. 2. The coil device according to claim 1 , wherein said Ni ferrite core has a composition comprising 47.5-48.4% by mol of FeO claim 1 , 25.0-30.5% by mol of ZnO claim 1 , and 6.0-11.5% by mol of CuO claim 1 , the balance being NiO and inevitable impurities.3. An antenna comprising the coil device recited in . The present invention relates to a resin-molded coil device and an antenna comprising it, for example, to a coil device used in keyless entry systems using electronic keys, electronic theft protection apparatuses (immobilizers), and tire pressure-monitoring systems (TPMS) for automobiles, and an antenna.Under the requirement of higher convenience and safety, keyless entry systems, TPMS (tire pressure-monitoring systems), etc. have become widely used in intelligentized automobiles. In TPMS, for example, a sensor unit for measuring air pressure is attached to each tire mounted to a vehicle, to conduct wireless communications of vehicle-identifying information and drive/stop control information of the sensor unit, etc., between a control unit in the vehicle and an antenna in the air pressure sensor unit. The wireless communications are conducted using, for example, an LF wave having a frequency of 125 kHz as a carrier wave. The antenna may have a function of transmitting power for driving the circuit.shows an example of the structures of antenna circuits used in such systems. The ...

Ceramic material

The present disclosure provides a ceramic material containing a vanadium oxide, and 50 to 400 ppm by mass of nitrogen with respect to the vanadium oxide. The ceramic material according to the present disclosure less varies in the amount of heat absorption. A cooling device comprising the ceramic material is also provided.

ELECTRO-CERAMIC MATERIAL COMPONENT, ITS MANUFACTURING METHOD AND METHOD OF CONVERTING ENERGY

The ceramic material element includes a main phase of orthorhombic perovskite-structure and a secondary phase due to a heat treatment within 700° C. to 850° C. for a first period followed by a second period within 1140° C. to 1170° C., from a mixture of materials A1, A2, A3, A4 and A5 excluding lead, the materials A1, A2, A3, A4 and A5 having molar ratios R1, R2, R3, R4 and R5, respectively, where the material A1 comprises potassium, the material A2 comprises sodium, the material A3 comprises barium, the material A4 comprises niobium, and the material A5 comprises nickel, and the molar ratio R1 is in a range 0.29-0.32, the molar ratio R2 is in a range 0.20-0.23, the molecular ratio R3 is in a range 0.01-0.02, the molar ratio R4 is in a range 0.54-0.55, and the molar ratio R5 is in a range 0.006-0.011, while a relative ratio of R1/R2 is in the range 1.24-1.52, and a relative ratio of R4/R2 is in the range 2.32-2.62. The ceramic material element converts optical radiation energy and mechanical vibration energy into electric energy. 1. A method of manufacturing an electrical ceramic composite component , the method comprisingforming a mixture of materials A1, A2, A3, A4 and A5 excluding lead, the materials A1, A2, A3, A4 and A5 having molar ratios R1, R2, R3, R4 and R5, respectively, where the material A1 comprises potassium, the material A2 comprises sodium, the material A3 comprises barium, the material A4 comprises niobium, and the material A5 comprises nickel; and{'sub': x', 'y', 'z', 'α', 'β', '3-δ', 'φ', 'ψ', 'ω, 'exposing said mixture to a heat treatment, which has a temperature within 700° C. to 850° C. for a first period, and thereafter a temperature within 1140° C. to 1170° C. for a second predefined period in order to form the ceramic material element of the component including a main phase of orthorhombic perovskite-structure (KNaBa)(NbNi)O and a secondary phase KNbO, which has the molar ratio R1 in a range about 0.29-0.32, the molar ratio R2 in a range ...

Ceramic material and capacitor comprising the ceramic material

A ceramic material for capacitors uses multilayer technology of the general formula: Pb 1−1.5a−0.5b+1.5d+e+0.5f) A a B b (Zr 1−x Ti x ) (1−c−d−e−f) Li d C e Fe f Si c O 3 +y.PBO wherein A is selected from the group consisting of La, Nd, Y, Eu, Gd, Tb, Dy, Ho, Er and Yb; B is selected from the group consisting of Na, K and Ag; C is selected from the group consisting of Ni, Cu, Co and Mn; and 0<a<0.12; 0.05≦x≦0.3; 0<b<0.12; 0≦c≦0.12; 0<d<0.12; 0≦e≦0.12; 0 <f<0.12; 0≦y≦1, and wherein b+d+e+f>0.

Positive electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery

This positive electrode active material for nonaqueous electrolyte secondary batteries contains: first particles which have an average surface roughness of 4% or less and are mainly configured of a lithium-nickel composite oxide wherein the ratio of Ni relative to the total number of moles of metal elements other than Li is more than 30% by mole; and second particles which are present on the surfaces of the first particles and are mainly configured of at least one hydroxide selected from among hydroxides of lanthanoid elements (excluding La and Ce) and oxyhydroxides.

Laminate type semiconductor ceramic capacitor with varistor functionality and method for manufacturing the same

A semiconductor ceramic having a compounding molar ratio m between a Sr site and a Ti site that satisfies 1.000≦m≦1.020, has a donor element present as a solid solution in crystal grains, has an acceptor element present in a grain boundary layer in the range of 0.5 mol or less with respect to 100 mol of the Ti element, contains a Zr element in the range of 0.15 mol or more and 3.0 mol or less with respect to 100 mol of the Ti element, and has the crystal grains of 1.5 μm or less in average grain size.

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

Provided is an oxide sintered body that, when used to obtain an oxide semiconductor thin film by sputtering, can achieve a low carrier concentration and a high carrier mobility. Also provided is a sputtering target using the oxide sintered body. The oxide sintered body contains, as oxides, indium, gallium, and at least one positive divalent element selected from the group consisting of nickel, cobalt, calcium, strontium, and lead. The gallium content, in terms of the atomic ratio Ga/(In+Ga), is from 0.20 to 0.45, and the positive divalent element content, in terms of the atomic ratio M/(In+Ga+M), is from 0.0001 to 0.05. The amorphous oxide semiconductor thin film, which is formed using the oxide sintered body as a sputtering target, can achieve a carrier concentration of less than 3.0×10cmand a carrier mobility of at least 10 cmVsec. 1. An oxide sintered body comprising indium , gallium , and a positive divalent element as oxides , whereina gallium content is 0.20 or more and 0.45 or less in terms of Ga/(In+Ga) atomic ratio,the total content of all the positive divalent elements is 0.0001 or more and 0.05 or less in terms of M/(In+Ga+M) atomic ratio,the positive divalent element is one or more selected from the group consisting of nickel, cobalt, calcium, strontium, and lead,the oxide sintered body includes;{'sub': 2', '3, 'an InOphase having a bixbyite-type structure;'}{'sub': 3', '2', '3', '2', '3', '3', '2', '3', '2', '3', '2', '3, 'and a GaInOphase having a β-GaO-type structure as a formed phase other than the InOphase, or a GaInOphase having a β-GaO-type structure and a (Ga, In)Ophase as a formed phase other than the InOphase;'}{'sub': 2', '4', '2', '4', '4', '7', '5', '6', '14', '12', '19', '2', '4', '3', '2', '6', '2', '4, 'and the oxide sintered body is substantially free of a NiGaOphase, a CoGaOphase, a CaGaOphase, a CaGaOphase, a SrGaOphase, a SrGaOphase, a SrGaOphase, and a GaPbOphase, which are a complex oxide composed of the positive divalent element ...

Electrode Material and Use Thereof for the Manufacture of an Inert Anode

The invention relates to an electrode material, preferably an inert anode material comprising at least a metal core and a cermet material, characterized in that: 1. Electrode material comprising at least a metal core and a cermet material , said metal core being at least covered by said cermet material and said cermet material forming an external layer of said electrode material which is designed to be in contact with an electrolysis bath , [ 40%≦Ni≦85%, preferably 55%≦Ni≦80%,', '15%≦Fe≦60%, preferably 20%≦Fe≦45%,, 'said metal core contains at least one nickel (Ni) and iron (Fe) alloy, the proportions by weight of Ni and Fe being as follows, [{'sub': x', 'y', 'z', '4, '45 to 80% of a nickel ferrite oxide phase of composition NiFeMOwith 0.60 ≦x≦0.90; 1.90≦y≦2.40; 0.00≦z≦0.20 and M being a metal selected from aluminum (Al), cobalt (Co), chromium (Cr), manganese (Mn), titanium (Ti), zirconium (Zr), tin (Sn), vanadium (V), niobium (Nb), tantalum (Ta) and hafnium (Hf) or being a combination of these metals,'}, '15 to 45% of a metallic phase comprising at least one alloy of nickel and copper., 'said cermet material comprises at least as percentages by weight], 'characterized in that2. Electrode material according to claim 1 , characterized in that the metal core of the electrode material further includes copper (Cu) in the following proportions by weight: 5%≦Cu≦40%.3. Electrode material according to claim 2 , characterized in that the proportions by weight of the metal core are:40%≦Ni≦70%;20%≦Fe≦45%;7%≦Cu≦20%.4. Electrode material according to claim 1 , characterized in that the metal core of the electrode material further comprises at least one metal A claim 1 , said metal A being selected from chromium (Cr) claim 1 , manganese (Mn) claim 1 , cobalt (Co) and molybdenum (Mo) claim 1 , with the proportion by weight of metal A in the metal core being as follows: 0.5%≦A≦30%.5. Electrode material according to claim 4 , characterized in that the proportions by weight of the ...

Multilayer ceramic capacitor

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

ZIRCONIUM OXIDE COMPOSITE CERAMIC AND PREPARATION METHOD THEREFOR

Provided are a zirconium oxide composite ceramic and a preparation method therefor. The zirconium oxide composite ceramic comprises by mass percentage: 65% to 80% of a zirconium oxide matrix, 10% to 30% of a conductive material, and 2% to 11% of a nano-reinforcing material. The conductive material is selected from at least one of a non-ferrous metal oxide, a white metal oxide, a compound having a perovskite structure and a compound having a spinel structure. The zirconium oxide composite ceramic has excellent antistatic properties and high mechanical properties. 1. A zirconia composite ceramic , comprising: by weight percentage , 65% to 80% of zirconia matrix , 10% to 30% of conductive material , and 2% to 11% of nanometer reinforcing material , wherein the conductive material is at least one selected from the group consisting of nonferrous metal oxide , white metal oxide , compound having perovskite structure , and compound having spinel structure , the colored oxide is at least one selected from the group consisting of CuO , CuO , VO , NiO , MnO , MnO , CoO , CoO , CoO , FeO , FeO , FeO , and CrO; the white oxide is at least one selected from the group consisting of ZnO , SnO , and TiO; the compound having perovskite structure is at least one selected from the group consisting of CaTiO , BaTiO , LaCrO , LaSrCrO , SrTiO , and LaFeO; the compound having spinel structure has a formula of ABO , wherein A is at least one selected from the group consisting of Mg , Fe , Zn , and Mn; B is at least one selected from the group consisting of Al , Cr , and Fe.2. The zirconia composite ceramic according to claim 1 , wherein the zirconia matrix comprises claim 1 , by weight percentage claim 1 , 2% to 10% of stabilizer and 90% to 98% of zirconia claim 1 , the stabilizer is at least one selected from the group consisting of yttria claim 1 , magnesium oxide claim 1 , calcium oxide claim 1 , and cerium oxide.3. The zirconia composite ceramic according to claim 1 , wherein the ...

MODIFIED NI-ZN FERRITES FOR RADIOFREQUENCY APPLICATIONS

Embodiments disclosed herein relate to using cobalt (Co) to fine tune the magnetic properties, such as permeability and magnetic loss, of nickel-zinc ferrites to improve the material performance in electronic applications. The method comprises replacing nickel (Ni) with sufficient Cosuch that the relaxation peak associated with the Cosubstitution and the relaxation peak associated with the nickel to zinc (Ni/Zn) ratio are into near coincidence. When the relaxation peaks overlap, the material permeability can be substantially maximized and magnetic loss substantially minimized. The resulting materials are useful and provide superior performance particularly for devices operating at the 13.56 MHz ISM band. 1. (canceled)2. A fine-tuned nickel-zinc ferrite material comprising:{'sup': '2+', 'sub': 1-x-y', 'x', 'y', '2', '4, 'a base nickel-zinc ferrite material doped with cobalt (CO) to adjust a nickel to zinc ratio of the base nickel-zinc ferrite material thereby providing a Ni/Zn relaxation absorption peak at a desired frequency above a desired low magnetic loss frequency, the cobalt being doped into the base nickel-zinc ferrite material to a level where a cobalt dominated relaxation peak merges into a low frequency end of the Ni/Zn relaxation absorption peak, the fine-tuned nickel-zinc ferrite material being represented by the formula NiZnCoFeO, x being between 0.2 and 0.6, and y being between 0 and 0.2'}3. The fine-tuned nickel-zinc ferrite material of wherein the fine-tuned nickel-zinc ferrite material has a composition NiCoZnFeO.4. The fine-tuned nickel-zinc ferrite material of wherein the base nickel-zinc ferrite material has a composition NiZnFeO.5. The fine-tuned nickel-zinc ferrite material of wherein the fine-tuned nickel-zinc ferrite material has a permeability in excess of 100.6. The fine-tuned nickel-zinc ferrite material of wherein the desired frequency is about 100 MHz.7. A radiofrequency component comprising:{'sup': '2+', 'sub': 1-x-y', 'x', 'y', '2', '4, ...

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

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

Ceramic Material, Component, and Method for Producing the Component

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

CERAMIC ELECTRONIC COMPONENT AND METHOD FOR PRODUCING CERAMIC ELECTRONIC COMPONENT

A ceramic electronic component includes a ferrite material magnetic body part and a Cu conductive part, the ferrite containing 20 to 48% trivalent Fe in terms of FeOand divalent Ni. The ferrite can contain Mn so that it is less than 50% of the total of Fe and Mn in terms of MnOand FeO. The magnetic and conductive parts are co-fired at a pressure not exceeding the equilibrium oxygen partial pressure of Cu—CuO thereby ensuring insulating performance and favorable electrical characteristics. 1. A method for producing a ceramic electronic component , the method comprising:{'sub': 2', '3', '2', '3', '2', '3', '2', '3, 'providing a laminated body comprising a stack of a plurality of ceramic green sheets having a conductive film thereon in which at least one conductive film contains Cu as its main constituent and is sandwiched between a pair of green sheets, wherein at least one green sheet comprises a calcined powder comprising trivalent Fe and one or more divalent elements including at least divalent Ni, 20 to 48% of FeO, 0% to less than 50% of MnObased on a total amount of the MnOand the FeO; and'}{'sub': '2', 'firing the laminate body in a firing atmosphere at a pressure equal to or lower than the equilibrium oxygen partial pressure of Cu—CuO.'}2. The method for producing a ceramic electronic component according to claim 1 , the calcined powder has 25 to 47% of the FeO claim 1 , 2% or more to less than 50% of the MnObased on the total amount of the MnOand the FeO claim 1 , 10% or less of CuO claim 1 , and 33% or less of ZnO.3. The method for producing a ceramic electronic component according to claim 2 , wherein the calcined powder has 30 to 46% of the FeO claim 2 , at least 1% of the CuO claim 2 , and at least 6% of the ZnO.4. The method for producing a ceramic electronic component according to claim 1 , further comprising forming the laminated body by constructing a stack of a plurality of ceramic green sheets with the conductive film thereon. The present application ...

Chemically Stable Proton Conducting Doped BaCeO3

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

Ferrite and coil electronic component including the same

A coil electronic component includes a magnetic body containing a ferrite; and a coil part including a plurality of conductive patterns disposed in the magnetic body. The ferrite contains 48 to 50 mol % of iron oxide calculated in terms of Fe 2 O 3 , 8 to 12 mol % nickel oxide calculated in terms of NiO, 28 to 31 mol % zinc oxide calculated in terms of ZnO, and 7 to 13 mol % copper oxide calculated in terms of CuO.

OXIDE CERAMIC AND CERAMIC ELECTRONIC COMPONENT

An oxide ceramic represented by the general formula [SrBaCo(ZnNi)FeAlO]. In the formula, 0.7≦x≦1.3 and 0.8≦z≦1.2. y is 0≦y≦0.8 when 0.5≦u≦1.0 and is 0≦y≦1.6 when 0≦u≦0.5. y is preferably 0.4 or less. Further, a variable inductor as a ceramic electronic component has a component base body formed from the oxide ceramic. 1. An oxide ceramic comprising:a ferrite compound containing at least Sr, Ba, Co, and Fe,wherein the Ba is contained in a form of substitution for some of the Sr, and x is 0.7 to 1.3 when a content of the Ba is expressed as x/2 in molar ratio with respect to a total of the Ba and the Sr, y is 0.8 or less when the element M is the Zn and when the element M is combined so that a content of the Zn is equal to or more than a content of the Ni in molar ratio, or', 'y is 1.6 or less when the element M is the Ni and when the element M is combined so that the content of the Zn is less than the content of the Ni in molar ratio, and, 'at least either one element M of Zn and Ni is contained in a form of substitution for some of the Co, and when a content of the element M is expressed as y/2 in molar ratio with respect to a total of the element M and the Co,'}Al is contained in a form of substitution for some of the Fe, and z is 0.8 to 1.2 when a content of the Al is expressed as z/12 in molar ratio with respect to a total of the Al and the Fe.2. The oxide ceramic according to claim 1 , wherein the oxide ceramic has a hexagonal Y-type crystal structure.3. The oxide ceramic according to claim 1 , wherein the ferrite compound is represented by a general formula [SrBaCo(ZnNi)FeAlO] claim 1 , where 0≦y≦0.8 and 0.5≦u≦1.0.4. The oxide ceramic according to claim 1 , wherein the ferrite compound is represented by a general formula [SrBaCo(ZnNi)FeAlO] claim 1 , where 0≦y≦1.6 and 0≦u<0.5.5. The oxide ceramic according to claim 2 , wherein the y is 0.4 or less.6. The oxide ceramic according to claim 3 , wherein the y is 0.4 or less.7. The oxide ceramic according to claim 4 , ...

Ceramic dielectric composition and multilayer ceramic capacitor containing the same

A ceramic dielectric composition contains a base material powder represented by one or more of (Ca 1-x Sr x )(Zr 1-y Ti y )O 3 , Ca(Zr 1-y Ti y )O 3 , Sr(Zr 1-y Ti y )O 3 , (Ca 1-x Sr x )ZrO 3 , and (Ca 1-x Sr x )TiO 3 , in which x and y satisfy 0≦x≦1.0 and 0.2≦y≦0.9, respectively. The ceramic dielectric composition may have high room-temperature permittivity and excellent ESD protection characteristics and may secure withstand voltage characteristics while implementing relatively high capacitance.

Ceramic dielectric composition and multilayer ceramic capacitor containing the same

A ceramic dielectric composition contains a base material powder represented by one or more of (Ca 1-x Sr x ) (Zr 1-y Ti y )O 3 , Ca(Zr 1-y Ti y )O 3 , Sr(Zr 1-x Ti y )O 3 , (Ca 1-x Sr x ) ZrO 3 , and (Ca 1-x Sr x )TiO 3 , in which x and y satisfy 0≦x≦1.0 and 0.2≦y≦0.9, respectively. The ceramic dielectric composition have on may high room-temperature permittivity and excellent ESD protection characteristics and may secure withstand voltage characteristics while implementing relatively high capacitance.

CATHODE MATERIAL AND FUEL CELL

A cathode material used in an anode and a cathode contains (Co,Fe)Oand a perovskite type oxide that is expressed by the general formula ABOand includes at least one of La and Sr at the A site. A content ratio of (Co,Fe)Oin the cathode material is at least 0.23 wt % and no more than 8.6 wt %. 1. A cathode material containing (Co ,Fe)Oand a perovskite type oxide , the perovskite type oxide being expressed by the general formula ABOand including at least one of La and Sr at the A site , wherein{'sub': 3', '4, 'a content ratio of (Co,Fe)Ois at least 0.23 wt % and no more than 8.6 wt %.'}2. The cathode material according to claim 1 , wherein the perovskite type oxide is LSCF.3. The cathode material according to claim 1 , wherein a content ratio of the perovskite type oxide is 91.4 wt % or more.4. The cathode material according to claim 1 , wherein the (Co claim 1 ,Fe)Ois at least one selected from the group consisting of CoFeO claim 1 , CoFeOand CoFeO. This application is a divisional application of U.S. patent application Ser. No. 14/819,572 filed on Aug. 6, 2015, which is a continuation application of International Application No. PCT/JP2014/059861, filed Apr. 3, 2014, which claims priority to Japanese Application No. 2013-084154, filed in Japan on Apr. 12, 2013, the contents of each of which is hereby incorporated herein by reference.The present invention relates to a cathode material and a fuel cell.In recent years, fuel cell batteries have attracted attention in light of effective use of energy resources and environmental problems. A fuel cell includes a fuel battery cell and an interconnector. A fuel cell generally includes an anode, a cathode and a solid electrolyte layer that is disposed between the anode and the cathode.A widely known configuration for the raw material of the cathode is a perovskite type oxide such as LSCF. (For example, reference is made to Japanese Patent Application Laid-Open No. 2006-32132).However, repetitive use of the fuel cell for power ...

Composite plate and production method therefor

[Problem] To provide a composite plate comprising a zirconia sintered body and a base material, or a zirconia sintered body and a base material comprising at least one among a group includes strengthened glass, Bakelite, aluminum, and magnesium, said composite plate being capable of being suitably used in a case or a watch member, etc, for a mobile electronic device that is light weight and has excellent shock resistance and abrasion resistance. [Solution] A composite plate having a thickness of no more than 2 mm, and having laminated therein a zirconia sintered body, an adhesive layer, and a base material, the elasticity of the base material being no more than 100 GPa, and the apparent density of the composite plate being no more than 4.3 g/cm 3 ; or a composite plate having a thickness of no more than 2 mm and includes, laminated in order, a zirconia sintered body, an adhesive layer, and a base material includes at least one type among a group includes strengthened glass, Bakelite, aluminum, and magnesium, the thickness ratio (zirconia sintered body thickness/base material thickness) between the zirconia sintered body and the base material being 0.1-1, and the apparent density of the composite plate being no more than 4.3 g/cm 3 .

Preparation method of alumina-carbon nano tube composite powder material

A preparation method of an alumina-carbon nano tube composite powder material includes the steps of using an organometallic precursor as a raw material, using metal nanoparticles formed on the surface of the alumina powder as a catalyst, and simultaneously feeding a carbonaceous gas such as methane and acetylene, so as to grow a carbon nano tube in situ, and obtain an alumina-metal nanoparticle-carbon nano tube composite powder material through a chemical vapor deposition method under a temperature condition of 400 to 800° C. Through changing various parameters such as the weight of the organic raw material, the flow or constituent of reactant gases and reaction temperature, the decomposition of the organic raw material and the generation of the metal nanoparticles and the carbon nano tube are adjusted, and the size and the microstructure of the powder are controlled.

Multilayer ceramic capacitor

A multilayer ceramic capacitor includes: a ceramic body in which dielectric layers and first and second internal electrodes are alternately stacked; and first and second external electrodes formed on an outer surface of the ceramic body and electrically connected to the first and second internal electrodes, respectively. In a microstructure of the dielectric layer, dielectric grains are divided by a dielectric grain size into sections each having an interval of 50 nm, respectively, a fraction of the dielectric grains in each of the sections within a range of 50 nm to 450 nm is within a range of 0.025 to 0.20, and a thickness of the dielectric layer is 0.8 μm or less.

Sputtering target

The sputtering target 100 used in forming a positive electrode layer of a lithium-ion rechargeable battery is made of a sintered body including first particles 110 and second particles 120 , the first particles 110 each containing lithium phosphorus oxide (e.g., Li 3 PO 4 ) as an inorganic solid electrolyte, the second particles 120 each containing lithium transition metal oxide (e.g., LiNiO 2 ) as a positive electrode active material.

Piezoelectric Oriented Ceramics and Method of Manufacturing the Same

Piezoelectric oriented ceramics containing a Pb(Ti, Zr)O 3 -based compound having a high degree of orientation not lower than 0.64, which was calculated with the Lotgering method based on an X-ray diffraction pattern in a prescribed cross-section thereof, and having a sintered density not lower than 85% of a theoretical density.

Magnetic material, electronic component, and winding core

A magnetic material which is likely to be cracked or chipped. The magnetic material is a magnetic material including ferrite particles and segregated particles containing Bi and Si, and characteristically, the magnetic material contains, as a main constituent, 46.0 mol % to 50.0 mol % Fe 2 O 3 , 0.4 mol % to 8.0 mol % CuO, 23.0 mol % to 32.0 mol % ZnO, and 18.0 mol % to 22.0 mol % NiO, and the ratio of the average particle size of the segregated particles to the average particle size of the ferrite particles is 0.04 or more and 0.19 or less (i.e., 0.04 to 0.19).

High performance fuel electrode for a solid oxide electrochemical cell

A high performance anode (fuel electrode) for use in a solid oxide electrochemical cell is obtained by a process comprising the steps of (a) providing a suitably doped, stabilized zirconium oxide electrolyte, such as YSZ, ScYSZ, with an anode side having a coating of electronically conductive perovskite oxides selected from the group consisting of niobium-doped strontium titanate, vanadium-doped strontium titanate, tantalum-doped strontium titanate and mixtures thereof, thereby obtaining a porous anode backbone, (b) sintering the coated electrolyte at a high temperature, such as 1200° C. in a reducing atmosphere, for a sufficient period of time, (c) effecting a precursor infiltration of a mixed catalyst into the backbone, said catalyst comprising a combination of noble metals Pd or Pt or Pd or Ru and Ni with rare earth metals, such as Ce or Gd, said infiltration consisting of (1) infiltration of Pd, Ru and CGO containing chloride/nitrate precursors and (2) infiltration of Ni and CGO containing nitrate precursors, and (d) subjecting the resulting structure of step (c) to heat treatments, including heat treatments in several steps with infiltration.

Dielectric composition, multilayer ceramic capacitor using the same, and method for manufacturing multilayer ceramic capacitor

A dielectric composition includes a base main component including Ba and Ti and an accessory component, wherein a ratio of domain width/grain size of the dielectric composition is in the range of 0 to 0.2, a multilayer ceramic capacitor using the same, and a method for manufacturing a multilayer ceramic capacitor. It is possible to provide a dielectric composition that can implement a higher dielectric constant and good high temperature withstand voltage characteristics in the same grain size condition. It is expected that this effect can be effectively applied to the development of ultra high capacity MLCCs having a thin dielectric by implementing the same capacity while increasing the thickness of the dielectric than the case of applying the conventional dielectric material.

Multilayer Component and Process for Producing a Multilayer Component

A multilayer component and a mathod for producing a multilayer component are disclosed. In an embodiment a multilayer component includes a ceramic main element and at least one metal structure, wherein the metal structure is cosintered and wherein main element is a varistor ceramic having ≥90 mol % of ZnO, from 0.5 to 5 mol % of SbO, from 0.05 to 2 mol % of CoO, MnO, SiOand/or CrO, and <0.1 mol % of BO, AlOand/or NiO. 1. A multilayer component comprising:a ceramic main element; and {'sub': 2', '3', '3', '4', '2', '3', '2', '2', '3', '2', '3', '2', '3, 'b': 0', '1, '90 mol % of ZnO, from 0.5 to 5 mol % of SbO, from 0.05 to 2 mol % of CoO, MnO, SiOand/or CrO, and <. mol % of BO, AlOand/or NiO.'}, 'at least one metal structure, wherein the metal structure is cosintered, and wherein main element is a varistor ceramic comprising2. The multilayer component according to claim 1 , wherein the main element is doped with a material of the metal structure such that diffusion of the material from the metal structure into the main element during a sintering operation is reduced.3. The multilayer component according to claim 2 , wherein the main element is doped with from 0.1 to 1 mol per cent of a chemical compound of the material of the metal structure.4. The multilayer component according to claim 2 , wherein dopants comprise silver oxide or silver carbonate.5. The multilayer component according to claim 2 , wherein dopants comprise a palladium compound.6. The multilayer component according to claim 1 , wherein the main element comprises BiO.7. The multilayer component according to wherein the main element is a ceramic sintered with an aid of liquid phases.8. The multilayer component according to claim 1 , wherein the metal structure comprises at least one internal electrode and/or at least one external metallization and/or at least one via.9. The multilayer component according to claim 1 , wherein the metal structure is doped with at least one material of the ceramic main ...

MULTILAYER COIL COMPONENT

A multilayer coil component including a magnetic part formed of a ferrite material, a non-magnetic part formed of a non-magnetic ferrite material, and a coiled conductive part embedded in the magnetic part and the non-magnetic part. The non-magnetic part has an Fe content of 36.0 to 48.5 mol % in terms of FeO, a Zn content of 46.0 to 57.5 mol % in terms of ZnO, a V content of 0.5 to 5.0 mol % in terms of VO, a Mn content of 0 to 7.5 mol % in terms of MnO, and a Cu content of 0 to 5.0 mol % in terms of CuO with respect to the sum of the Fe content in terms of FeO, the Zn content in terms of ZnO, the V content in terms of VO, and if present, the Cu content in terms of CuO, and the Mn content in terms of MnO. 1. A multilayer coil component comprising:a magnetic part formed of a ferrite material;a non-magnetic part formed of a non-magnetic ferrite material; anda coiled conductive part embedded in the magnetic part and the non-magnetic part,wherein the non-magnetic part has{'sub': 2', '3, 'an Fe content of 36.0 to 48.5 mol % in terms of FeO,'}a Zn content of 46.0 to 57.5 mol % in terms of ZnO,{'sub': 2', '5, 'a V content of 0.5 to 5.0 mol % in terms of VO,'}{'sub': 2', '3, 'a Mn content of 0 to 7.5 mol % in terms of MnO, and'}a Cu content of 0 to 5.0 mol % in terms of CuO{'sub': 2', '3', '2', '5', '2', '3, 'with respect to a sum of the Fe content in terms of FeO, the Zn content in terms of ZnO, the V content in terms of VO, and if present, the Cu content in terms of CuO, and the Mn content in terms of MnO.'}2. The multilayer coil component according to claim 1 , wherein the V content in terms of VOis 0.5 to 3.5 mol %.3. The multilayer coil component according to claim 1 , wherein the Mn content in terms of MnOis 0.1 to 7.5 mol %.4. The multilayer coil component according to claim 1 , wherein the Cu content in terms of CuO is 0.1 to 5.0 mol %.5. The multilayer coil component according to claim 1 , wherein the conductive part is formed of a conductor containing copper. ...

Ferrite sintered body and electronic component using thereof

A ferrite sintered body of the invention includes; a main component including 48.65 to 49.45 mol % of iron oxide in terms of Fe2O3, 2 to 16 mol % of copper oxide in terms of CuO, 28.00 to 33.00 mol % of zinc oxide in terms of ZnO, and a balance including nickel oxide, and a subcomponent including boron oxide in an amount of 5 to 100 ppm in terms of B2O3 with respect to 100 parts by weight of the main component, in which the ferrite sintered body includes crystal grains having an average crystal grain size of 2 to 30 μm.

Lead-Free High-Insulating Ceramic Coating Zinc Oxide Arrester Valve and Preparation Method Thereof

A lead-free insulating ceramic coating zinc oxide arrester valve and a method for manufacturing thereof are disclosed. In an embodiment a method includes preparing an initial powder from starting materials with the following mass percentages: ZnO: 86-95%; BiO: 1.0-3.0%; CoO: 0.5-1.5%; MnO: 0.2-1.0%; SbO: 3.0-9.0%; NiO: 0.2-1.0%; and SiO: 1.0-3.0%, preparing a ceramic coating powder by mixing the initial powder, deionized water and first grinding balls, milling the mixture, and drying and pulverizing the mixture, preparing a ceramic coating slurry by mixing a PVA solution, the ceramic coating powder and second grinding balls and milling the mixture, applying the ceramic coating slurry to a green body, heating and debinding the ceramic coating slurry with the green body thereby forming a resistor element and sintering the resistor element thereby obtaining a zinc oxide surge arrester valve block having a lead-free insulating ceramic coating. 110-. (canceled)11. A method for preparing a zinc oxide surge arrester valve block having a lead-free insulating ceramic coating , the method comprising:preparing an initial powder from starting materials with the following mass percentages:{'sub': 2', '3', '3', '4', '3', '4', '2', '3', '2, 'ZnO: 86-95%; BiO: 1.0-3.0%; CoO: 0.5-1.5%; MnO: 0.2-1.0%; SbO: 3.0-9.0%; NiO: 0.2-1.0%; and SiO: 1.0-3.0%;'}preparing a ceramic coating powder by mixing the initial powder, deionized water and first agate grinding balls, loading the mixture into a polyurethane ball mill jar, ball milling the mixture, and oven-drying and pulverizing a slurry resulting from the ball milling, wherein a ratio of a mass of the initial powder to a mass of the deionized water to a mass of the first agate grinding balls is 3:2:4;preparing a ceramic coating slurry by mixing a PVA solution, the ceramic coating powder and second agate grinding balls, loading the mixture into a polyurethane ball mill jar and ball milling the mixture, wherein a ratio of a mass of the ...

Method for Making Ferroelectric Material Thin Films

A method of growing a FE material thin film using physical vapor deposition by pulsed laser deposition or RF sputtering is disclosed. The method involves creating a target to be used for the pulsed laser deposition in order to create a KBNNO thin film. The resultant KBNNO thin film is able to be used in photovoltaic cells. 1. A method of making a ferroelectric thin film for a photoelectric device comprising:vaporizing a target, and{'sub': 3', '0.5', '0.5', '3, 'growing a thin film from the vaporized target on the surface of a substrate, wherein the grown thin film comprises a (l-x)KNbO-xBaNbNiO(KBNNO) material.'}2. The method of claim 1 , wherein the thin film is between 15 nm and 1 micron thick.3. The method of claim 1 , wherein the substrate has a temperature between possible between 400 to 800° C.4. The method of wherein the substrate is lattice mismatched with respect to the grown thin film.5. The method of claim 1 , wherein vaporization is performed using a laser.6. The method of claim 1 , wherein vaporization is performed using RF sputtering.7. The method of claim 1 , further comprising forming the target prior to vaporizing the target claim 1 , wherein forming the target comprises:{'sub': 3', '2', '5, 'mixing KNO, NBO, NiO and BaO into a powder.'}8. The method of claim 7 , wherein forming the target further comprises;grinding the powder;pressing the ground powder; andannealing the pressed, ground powder.9. The method of claim 7 , wherein forming the target further comprises;ball-milling the powder;annealing the ball-milled powder;{'sub': '3', 'mixing the annealed powder with KNOand pressing into pellets; and'}heating the pellets.10. The method of claim 1 , further comprising forming the target prior to vaporizing the target claim 1 , wherein forming the target comprises:{'sub': 2', '3', '3', '2', '5, 'mixing KCO, BaCO, NiO and NBOinto a powder;'}ball milling the powder;calcining the powder;pressing the powder into pellets; andsintering the pellets.11. The ...

ZIRCONIA COMPOSITION, ZIRCONIA PRE-SINTERED BODY AND ZIRCONIA SINTERED BODY, AND DENTAL PRODUCT

Provided is a zirconia sintered body that suppresses discoloration due to porcelain. The zirconia sintered body comprises at least one of a coloring agent A: erbium oxide and a coloring agent B: nickel oxide, and a composite oxide of zirconium and vanadium. 13-. (canceled)4: A zirconia sintered body , comprising: a coloring agent A: erbium oxide,', 'a coloring agent B: nickel oxide,', 'a coloring agent C: a composite oxide of zirconium and vanadium,', 'a coloring agent D: a mixture of a composite oxide of iron, cobalt and chromium, a composite oxide of zirconium and silicon, silicon dioxide and nickel oxide, and', 'a coloring agent E: a composite oxide of zirconium, silicon, cobalt and nickel., 'at least two coloring agents selected from the group consisting of'}5: The zirconia sintered body according to claim 4 , comprising:at least one of the coloring agent A, the coloring agent B and the coloring agent C; andat least one of the coloring agent D and the coloring agent E.6: The zirconia sintered body according to claim 4 , comprising:0.005 to 0.02 mass % of the coloring agent C; and0.06 to 0.08 mass % of the coloring agent E.7: The zirconia sintered body according to claim 4 , comprising:0.07 to 0.09 mass % of the coloring agent C; and0.05 to 0.2 mass % of the coloring agent D.8: The zirconia sintered body according to claim 4 , comprising:0.007 to 0.06 mass % of the coloring agent B; and0.01 to 0.06 mass % of the coloring agent D.9: The zirconia sintered body according to claim 4 , comprising:0.01 to 0.04 mass % of the coloring agent A;0.05 to 0.07 mass % of the coloring agent C; and0.05 to 0.08 mass % of the coloring agent D.10: The zirconia sintered body according to claim 4 , comprising:0.002 to 0.3 mass % of the coloring agent A;0.0005 to 0.03 mass % of the coloring agent B;0.005 to 0.07 mass % of the coloring agent C; and0.004 to 0.04 mass % of the coloring agent D.1113-. (canceled)14: A composition claim 4 , comprising:zirconium oxide,yttrium oxide, anda ...

Mn-Zn-O SPUTTERING TARGET AND PRODUCTION METHOD THEREFOR

Provided are a Mn—Zn—O sputtering target that can be used for DC sputtering and a production method therefor. The Mn—Zn—O sputtering target has a chemical composition containing Mn, Zn, O, and an element X (X is one or two elements selected from the group consisting of W and Mo). A surface to be sputtered of the target has an arithmetic mean roughness Ra of 1.5 μm or less or a maximum height Ry of 10 μm or less.

Method, System, and Kit for coloring dental ceramics

A system, method and kit for coloring dental ceramics. The system, method, and kit resulting capable of adjusting the shade of a dental restoration milled from a colored zirconia porcelain block from one color value of the VITA shade guide to a different color value of the VITA shade guide.

Lithium composite oxide sintered body plate

A lithium composite oxide sintered body plate includes a porous structure in which a plurality of primary particles of a lithium composite oxide having a layered rock-salt structure are bonded is included, in which a porosity is 15 to 50%, a ratio of the primary particles whose average inclination angle being an average value of angles between a (003) plane of the plurality of primary particles and a plate surface of the sintered body plate is more than 0° and 30° or less is 60% or more, one or more additive elements selected from Nb, Ti, W are contained, and an addition amount of the one or more additive elements to an entire of the sintered body plate is 0.01 wt % or more and 2.0 wt % or less.

Joined body, honeycomb structure, method for producing joined body, and covered body

A joined body 20 includes a first member 22 having a thermal expansion coefficient of 8 ppm/K or less, a second member 24 having a thermal expansion coefficient of 12 ppm/K or more, and a joining portion 30 composed of an electrically conductive oxide containing 50% by mass or more of a spinel-type ferrite phase, the joining portion 30 joining the first member and the second member. The electrically conductive oxide preferably contains Fe and element A (where element A represents one or more selected from the group consisting of Mg, Mn, Co, Ni, Cu, and Zn). The molar ratio of element A to Fe, i.e., A/Fe, is 0.5 or less.

PIEZOELECTRIC DEVICE AND PIEZOELECTRIC CERAMIC COMPOSITION

A piezoelectric device is provided with: a piezoelectric ceramic layer that is obtained by firing a piezoelectric ceramic composition which contains a perovskite composition and an Ag component; and a conductor layer that sandwiches the piezoelectric ceramic layer, wherein Ag is segregated in voids in a sintered body of the perovskite composition in the piezoelectric ceramic layer. The piezoelectric ceramic composition preferably contains a perovskite composition which is represented by (Pba.Rex){Zr.Ti,.(NiNb).(ZnNb)}O(wherein Re represents La and/or Nd, and a-e and x satisfy the following conditions 0.95≦a≦1.05, 0≦x≦0.05, 0.35≦b≦0.45, 0.35≦c≦0.45, 0 Подробнее

Negative electrode for electric device and electric device using the same

The negative electrode for an electric device includes a current collector and an electrode layer containing a negative electrode active material, a conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by the following formula (1): Si x Sn y M z A a (in the formula (1), M is at least one metal selected from the group consisting of Al, V, C and a combination thereof, A is inevitable impurities, and x, y, z and a represent mass percent values and satisfy the conditions of 0<x<100, 0<y<100, 0<z<100, 0≦a<0.5, and x+y+z+a=100), and elastic elongation of the current collector is 1.30% or greater.

ZINC OXIDE BASED VARISTOR AND FABRICATION METHOD

A varistor may include a varistor ceramic that includes zinc oxide having a molar percent greater than 90 percent and a set of metal oxides, where the set of metal oxides includes BiOhaving a molar fraction between 0.2 and 2.5 percent; CoOhaving a molar fraction between 0.2 and 1.2 percent; MnOhaving a molar fraction between 0.05 and 0.5 percent; CrOhaving a molar fraction between 0.05 and 0.5 percent; NiO having a molar fraction between 0.5 and 1.5 percent; SbOoxide having a molar fraction between 0.05 and 1.5 percent; BOhaving a molar fraction between 0.001 to 0.03 percent; and aluminum in the form of an oxide having a molar fraction between 0.001 and 0.05 percent. 1. A varistor ceramic comprising:zinc oxide having a molar percent greater than 90 percent; [{'sub': 2', '3, 'bismuth in oxide form comprising a molar fraction equivalent to between 0.2 and 2.5 percent BiO;'}, {'sub': 3', '4, 'cobalt in oxide form comprising a molar fraction equivalent to between 0.2 and 2.0 percent CoO;'}, {'sub': 3', '4, 'manganese in oxide form comprising a molar fraction equivalent to between 0.05 and 1.5 percent MnO;'}, {'sub': 2', '3, 'chromium in oxide form comprising a molar fraction equivalent to between 0.05 and 0.5 percent CrO;'}, 'nickel in oxide form comprising a molar fraction equivalent to between 0.5 and 1.5 percent NiO;', {'sub': 2', '3, 'antimony in oxide form comprising a molar fraction equivalent to between 0.05 and 1.5 percent SbO;'}, {'sub': 2', '3, 'boron in oxide form comprising a having a molar fraction equivalent to 0.001 to 0.05 percent BO; and'}], 'a set of metal oxides, the set of metal oxides comprisingaluminum in oxide form comprising a molar fraction equivalent to between 0.001 and 0.05 percent.2. The varistor of claim 1 , comprising:{'sub': 2', '3, 'bismuth in oxide form comprising a molar fraction equivalent to between 0.8 and 1.0 percent BiO;'}{'sub': 3', '4, 'cobalt in oxide form comprising a molar fraction equivalent to between 0.4 and 0.6 percent ...

FERRITE SINTERED PLATE AND FERRITE SINTERED SHEET

The present invention relates to an Ni—Zn—Cu—Co ferrite sintered plate having a composition comprising 45 to 50 mol % of FeO, 10 to 25 mol % of NiO, 15 to 36 mol % of ZnO, 2 to 14 mol % of CuO and 0.1 to 3.5 mol % of CoO, all of the molar amounts being calculated in terms of the respective oxides, and a ferrite sintered sheet that is provided on a surface thereof with a groove and further with an adhesive layer and/or a protective layer. The ferrite sintered sheet is capable of exhibiting an increased μ′ value of a magnetic permeability while maintaining a small μ″ value of the magnetic permeability. 1. An Ni—Zn—Cu—Co ferrite sintered plate having a composition comprising 45 to 50 mol % of FeO , 10 to 25 mol % of NiO , 15 to 36 mol % of ZnO , 2 to 14 mol % of CuO and 0.1 to 3.5 mol % of CoO , all of the molar amounts being calculated in terms of the respective oxides.2. A ferrite sintered sheet comprising the ferrite sintered plate as claimed in claim 1 , an adhesive layer formed on one surface of the ferrite sintered plate claim 1 , and a protective layer formed on an opposite surface of the ferrite sintered plate.3. A ferrite sintered sheet comprising the ferrite sintered plate as claimed in claim 1 , and adhesive layers respectively formed on opposite surfaces of the ferrite sintered plate.4. A ferrite sintered sheet comprising the ferrite sintered plate as claimed in claim 1 , and protective layers respectively formed on opposite surfaces of the ferrite sintered plate.5. The ferrite sintered sheet according to claim 2 , wherein at least one groove is formed on at least one surface of the ferrite sintered plate.6. The ferrite sintered sheet according to wherein the ferrite sintered plate is divided into small parts. The present invention relates to a ferrite sintered plate, and a ferrite sintered sheet comprising the ferrite sintered plate and an adhesive layer and/or a protective layer formed on a surface of the ferrite sintered plate.Communication equipments ...

Doped lanthanum chromate thin-film thermocouple and preparation method thereof

A doped lanthanum chromate thin-film thermocouple includes two thermodes ( 1, 2 ) arranged on a ceramic substrate ( 3 ), wherein: the two thermodes ( 1, 2 ) are overlapped with each other; both of the thermodes ( 1, 2 ) are made of doped lanthanum chromate thin film; at least one doping element selected from a group consisting of Mg, Ca, Sr, Ba, Co, Cu, Sm, Fe, Ni and V is doped in each lanthanum chromate thin film; and the lanthanum chromate thin films adopted by the two thermodes ( 1, 2 ) are doped with in different doping elements or with a same doping element of different contents. A method for preparing the doped lanthanum chromate thin-film thermocouple is also provided.

MULTILAYER COIL COMPONENT

A multilayer coil component includes a multilayer body formed by stacking a plurality of insulating layers on top of one another and that has a coil built thereinto, and a first outer electrode and a second outer electrode that are electrically connected to the coil. The coil is formed by electrically connecting a plurality of coil conductors to one another. A first main surface of the multilayer body is a mounting surface. A stacking direction of the multilayer body and an axial direction of the coil are parallel to the mounting surface. The insulating layers between the coil conductors are composed of a material containing at least one out of a magnetic material and a non-magnetic material. A content percentage of the non-magnetic material in the insulating layers changes in a direction from a first end surface toward a second end surface of the multilayer body. 1. A multilayer coil component comprising: a first end surface and a second end surface, which face each other in a length direction, and a content percentage of the non-magnetic material contained in the insulating layers changes in a direction from the first end surface toward the second end surface of the multilayer body,', 'a first main surface and a second main surface, which face each other in a height direction perpendicular to the length direction, the first main surface being a mounting surface, and a stacking direction of the multilayer body and an axial direction of the coil being parallel to the mounting surface, and', 'a first side surface and a second side surface, which face each other in a width direction perpendicular to the length direction and the height direction; and, 'a multilayer body that is formed by stacking a plurality of insulating layers on top of one another and that has a coil built into the inside thereof, the coil being formed by electrically connecting a plurality of coil conductors, which are stacked together with insulating layers, to one another, the insulating layers ...

SOLID OXIDE FUEL CELL

A solid oxide fuel cell includes a cathode including a complex oxide having a perovskite structure expressed by the formula ABO, an anode, and a solid electrolyte layer disposed between the cathode and the anode. The cathode includes phosphorus, chromium and boron, a content amount of the phosphorus in the cathode is at least 10 ppm and no more than 50 ppm, a content amount of the chromium in the cathode is at least 50 ppm and no more than 500 ppm, and a content amount of the boron in the cathode is at least 5 ppm and no more than 50 ppm. 1. A solid oxide fuel cell comprising:{'sub': '3', 'a cathode including a complex oxide having a perovskite structure expressed by the formula ABO,'}an anode, anda solid electrolyte layer disposed between the cathode and the anode, whereinthe cathode includes phosphorus, chromium and boron,a content amount of the phosphorus in the cathode is at least 10 ppm and no more than 50 ppm,a content amount of the chromium in the cathode is at least 50 ppm and no more than 500 ppm, anda content amount of the boron in the cathode is at least 5 ppm and no more than 50 ppm.2. The solid oxide fuel cell according to claim 1 , whereinthe content amount of the phosphorus in the cathode is no more than 30 ppm.3. The solid oxide fuel cell according to claim 1 , whereinthe content amount of the chromium in the cathode is no more than 100 ppm.4. The solid oxide fuel cell according to claim 1 , whereinthe content amount of the boron in the cathode is no more than 10 ppm.5. The solid oxide fuel cell according to claim 2 , whereinthe content amount of the chromium in the cathode is no more than 100 ppm.6. The solid oxide fuel cell according to claim 2 , whereinthe content amount of the boron in the cathode is no more than 10 ppm.7. The solid oxide fuel cell according to claim 3 , whereinthe content amount of the boron in the cathode is no more than 10 ppm. This application is a divisional application of the U.S. application Ser. No. 14/304,434 filed on ...

Ferroelectric Perovskite Oxide-Based Photovoltaic Materials

A ferroelectric perovskite composition, comprising a perovskite oxide ABO 3 , and a doping agent selected from perovskites of Ba(Ni,Nb)O 3 and Ba(Ni,Nb)O 3-δ . The ferroelectric perovskite composition may be represented by the formula: xBa(Ni,Nb)O 3 .(1-x)ABO 3 or xBa(Ni,Nb)O 3-δ .(1-x)ABO 3. A method of producing the ferroelectric perovskite composition in thin film form is also provided.

Non-Ferroelectric High Dielectric and Preparation Method Thereof

Provided is a method for preparing a grain boundary insulation-type dielectric. The method includes the steps of obtaining a titanic acid compound and a ferroelectric having a value less than a melting point of the titanic acid compound; obtaining a mixture by adding the ferroelectric material to the titanic acid compound; and sintering the mixture at a temperature equal to or more than a melting point of the ferroelectric material.

ZIRCONIA COMPOSITION, ZIRCONIA PRE-SINTERED BODY AND ZIRCONIA SINTERED BODY, AND DENTAL PRODUCT

A zirconia sintered body that suppresses discoloration due to porcelain. The zirconia sintered body contains at least one of a coloring agent A, which is erbium oxide and a coloring agent B, which is nickel oxide, and contains a composite oxide of zirconium and vanadium. A composition, containing zirconium oxide, yttrium oxide, and a coloring agent, where the coloring agent contains at least one of a coloring agent A, which is erbium oxide and a coloring agent B, which is nickel oxide, and contains a coloring agent C, which is a composite oxide of zirconium and vanadium. 1. A zirconia sintered body , comprising: a coloring agent A: erbium oxide, and', 'a coloring agent B: nickel oxide; and', 'a coloring agent C: a composite oxide of zirconium and vanadium., 'at least one of'}2. The zirconia sintered body according to claim 1 , comprising:0.002 to 0.4 mass % of the coloring agent A;0.0002 to 0.03 mass % of the coloring agent B; and0.005 to 0.1 mass % of the coloring agent C.3. The zirconia sintered body according to claim 1 , comprising:0.01 to 0.02 mass % of the coloring agent B;0.06 to 0.08 mass % of the coloring agent C.410-. (canceled)11. A composition claim 1 , comprising:zirconium oxide; a coloring agent,', at least one of a coloring agent A: erbium oxide and a coloring agent B: nickel oxide,', 'and', 'a coloring agent C: a composite oxide of zirconium and vanadium., 'wherein the coloring agent comprises'}], 'yttrium oxide; and'}12. The composition according to claim 11 , comprising:0.002 to 0.5 mass % of the coloring agent A;0.0002 to 0.03 mass % of the coloring agent B; and0.005 to 0.1 mass % of the coloring agent C.13. The composition according to claim 11 , comprising:0.01 to 0.02 mass % of the coloring agent B; and0.06 to 0.08 mass % of the coloring agent C.1420-. (canceled)21. A pre-sintered body claim 11 , produced by firing a composition according to at 800° C. to 1200° C.22. A zirconia sintered body claim 11 , produced by firing a composition according ...

ZINC OXIDE VARISTOR AND METHOD FOR MANUFACTURING SAME

Focus is on zinc oxide itself, which is a base material for a zinc oxide varistor (laminated varistor), wherein specified quantities of additives are added to a zinc oxide powder having a crystallite size of 20 to 50 nm, grain diameter of 15 to 60 nm found using the specific surface area BET method, untamped density of 0.38 to 0.50 g/cm, and tap density of 0.50 to 1.00 g/cm. This allows securing of uniformity, high compactness, and high electrical conductivity of a zinc oxide sintered body, and provision of a zinc oxide varistor having high surge resistance. 1. A zinc oxide varistor , comprising zinc oxide (ZnO) as a main component , one or more kinds of additives selected as a grain boundary forming component from a group including bismuth (Bi) and praseodymium (Pr) , and one or more kinds of additives selected as a transition metal element from a group including cobalt (Co) , manganese (Mn) and nickel (Ni);{'sup': 3', '3, 'wherein the zinc oxide has a crystallite size of 20 to 50 nm found by X-ray diffraction, grain diameter of 15 to 60 nm found using a specific surface area BET method, untamped density of 0.38 to 0.50 g/cm, and tap density of 0.50 to 1.00 g/cm.'}2. A zinc oxide varistor , comprising zinc oxide (ZnO) as a main component , one or more kinds of additives selected as a grain boundary forming component from a group including bismuth (Bi) and praseodymium (Pr) , and one or more kinds of additives selected as a transition metal element from a group including cobalt (Co) , manganese (Mn) and nickel (Ni);wherein the zinc oxide has median diameter of 30 to 60 nm found using a dynamic scattering method, cumulant diameter of 40 to 82 nm, and cumulant polydispersity index of 0.05 to 0.20.3. The zinc oxide varistor according to claim 1 , wherein crystallite size when powder of the zinc oxide is sintered at 1000° C. is 70 to 1200 nm claim 1 , and crystallite size when sintered at 1150° C. is 75 to 170 nm.4. The zinc oxide varistor according to claim 3 , wherein ...

HEAT INSULATOR

A heat insulator including a porous sintered body having a porosity of 70 vol % or more, pores having a pore size of more than 1000 μm in a proportion of 10 vol % or less of all pores and pores having a pore size of 0.8 μm or more and less than 10 μm occupy 50 vol % or more and 80 vol % or less of pores having a pore size of 1000 μm or less, while pores having a pore size of 0.01 μm or more and less than 0.8 μoccupy 10 vol % or more and 30 vol % or less pores having a pore size of 1000 μm or less. The porous sintered body is formed from MgAlOraw material and includes a fibrous layer formed from inorganic material fibers, the heat conductivity of the heat insulator at 1000° C. or more and 1500° C. or less being 0.40 W/m·K) or less. 1{'sub': 2', '4, 'the porous sintered body including a spinel sintered body formed from an mgAlOand a fibrous layer formed from fibers formed of an inorganic material on at least one surface of the spinel sintered body,'}the porous sintered body having pores having a pore size of more than 1000 μm in a proportion of 10 vol % or less of all the pores,pores having a pore size of 0.8 μm or more and less than 10 μm occupying 50 vol % or more and 80 vol % or less of the pores having a pore size of 1000 μm or less, while pores having a pore size of 0.01 μm or more and less than 0.8 μm occupying 10 vol % or more and 30 vol % or less of the pores having a pore size of 1000 μm or less,the fibers in the fibrous layer having a silica component content of 55 wt % or less, andthe heat conductivity of the heat insulator at 1000° C. or more and 1500° C. or less being 0.40 W/(m·K) or less.. A heat insulator comprising a porous sintered body having a porosity of 70% or more, This application is a divisional of U.S. application Ser. No. 14/755,757, filed Jun. 30, 2015, which claims priority to Japanese Patent Application No. 2014-137125, filed Jul. 2, 2014, Japanese Patent Application No. 2014-138234, filed Jul. 4, 2014, Japanese Patent Application No. 2014 ...

ANNEALING SEPARATOR COMPOSITION FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET, GRAIN-ORIENTED ELECTRICAL STEEL SHEET, AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

The present invention provides an annealing separator composition, a grain-oriented electrical steel sheet and a method for manufacturing a grain-oriented electrical steel sheet. 1. An annealing separator composition for a grain-oriented electrical steel sheet comprising:on the basis of total solid 100 wt %, 5 to 70 wt % of mullite; andthe remainder being magnesium oxide or magnesium hydroxide.2. The annealing separator composition of claim 1 , further comprising0.1 to 20 wt % of metal hydroxide.3. The annealing separator composition of claim 2 , wherein{'sub': 2', '2', '2', '2', '3', '3', '2, 'the metal hydroxide comprises at least one selected from Ni(OH)2, Co(OH), Cu(OH)2, Sr(OH), Ba(OH), Pd(OH), In(OH), Bi(OH)and Sn(OH).'}4. The annealing separator composition of claim 1 , further comprising0.5 to 10 wt % of ceramic powder.5. The annealing separator composition of claim 4 , wherein{'sub': 2', '3', '2', '2, 'the ceramic powder comprises at least one selected from MnO, AlO, SiO2, TiOand ZrO.'}6. The annealing separator composition of claim 1 , further comprising{'sub': 2', '4', '3', '4', '4, '1 to 10 wt % of Sb(SO), SrSO, BaSOor a combination thereof.'}7. A grain-oriented electrical steel sheet wherein a coating comprising mullite and forsterite is formed on one or both sides of a substrate of a grain-oriented electrical steel sheet.8. The grain-oriented electrical steel sheet of claim 7 , whereinthe coating comprises 0.5 to 50 wt % of Al.9. The grain-oriented electrical steel sheet of claim 7 , whereinthe coating further comprises 3 to 80 wt % of Mg, 3 to 80 wt % of Si, 3 to 80 wt % of O and Fe as the remainder.10. The grain-oriented electrical steel sheet of claim 7 , whereina thickness of the coating is 0.1 to 10 μm.11. The grain-oriented electrical steel sheet of claim 7 , further comprisinga ceramic layer formed on the coating.12. The grain-oriented electrical steel sheet of claim 11 , whereinthe ceramic layer comprises ceramic powder.13. The grain-oriented ...