ЛЕГИРОВАННЫЕ ТЕЛЛУРИДЫ СВИНЦА ДЛЯ ТЕРМОЭЛЕКТРИЧЕСКОГО ПРИМЕНЕНИЯ

Изобретение касается полупроводниковых материалов, содержащих свинец и теллур, а также, по меньшей мере, одну или две другие примеси, а также содержащих эти материалы термоэлектрических генераторов и устройств Пельтье. Полупроводниковый материал с проводимостью р- или n-типа на основе легированных теллуридов свинца имеет соединение общей формулы (I) ! ! со следующими значениями: в каждом случае независимо n означает количество химических элементов, отличных от Pb и Те, ! 1 част./млн≤х1, …, xn≤0,05, -0,05≤z≤0,05 и n=2, А1…An - отличные друг от друга и выбраны из группы элементов: Al, Ge, Sn, Bi, Ti, Zr, Hf, Nb, Та, Cu, Ag, или n=1, А1 выбран из Zr, Ag, Cu. Данные термоэлектрически активные материалы имеют высокий КПД и обнаруживают свойства, подходящие для различных областей применения: в качестве теплового насоса, в холодильниках и сушилках, для кондиционирования транспортных средств и зданий, для одновременного нагрева и охлаждения потоков веществ в процессах их разделения, в качестве ...

СПОСОБ ПОЛУЧЕНИЯ САМОНЕСУЩЕГО КЕРАМИЧЕСКОГО ТЕЛА

Изобретение касается способа изготовления композиционных изделий сложной формы. Для этого заготовку исходного металла размещают в слое дисперсного инертного огнеупорного материала или в контакте с брикетом, сформованным из этого материала, и нагревают в газообразной среде, реакционноспособной по отношению к металлу заготовки. Нагрев ведут до температуры, большей точки плавления металла заготовки, но меньшей точки плавления продукта взаимодействия металла с газообразной средой, в течение времени, достаточного для взаимодействия металла со средой и его миграции через последовательно образующиеся слои в сторону среды. При этом, по меньшей мере, на часть поверхности металла наносят барьерное средство из материала, проницаемого для газообразной среды, но непроницаемого для металла или продукта его взаимодействия со средой. Барьерное средство можно размещать на заданном расстоянии от заготовки и/или частично заполнять им пространство между заготовкой и слоем (или брикетом) инертного огнеупорного ...

Сырьевая смесь для изготовления керамических теплоизоляционных строительных материалов

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

КЕРАМИКА И СПОСОБЫ ЕЕ ИЗГОТОВЛЕНИЯ И ИСПОЛЬЗОВАНИЯ

... 1. Стекло, включающее (а) по меньшей мере 35 мас.% Al2О3, (б) по меньшей мере 0,1 мас.% N от общего веса стекла, при этом стекло содержит не более 10 мас.% совокупного количества As2O3, Bi2O3, В2О3, GeO2, P2O5, SiO2, TeO2 и V2O3 от общего веса стекла. 2. Стекло по п.1, включающее по меньшей мере 60 мас.% Al2О3, по меньшей мере 0,2 мас.% N от общего веса стекла. 3. Стекло по п.1, включающее по меньшей мере один оксид металла, иной, чем Al2O3, выбранный из группы, состоящей из BaO, CaO, CeO2, CuO, Dy2O3, Er2O3, Eu2O3, Gd2O3, Но2O3, La2O3, Lu2О3, MgO, Nd2O3, Pr6О11, Sm2О3, Sc2O3, SrO, Tb2O3, Th4O7, TiO2, Tm2O3, Yb2O3, Y2О3, ZrO2 и их комбинаций. 4. Керамика, включающая стекло по п.1. 5. Способ изготовления стекла по п.1, включающий приготовление расплава, включающего источники Al2О3 и N в количестве, достаточном для приготовления расплава с содержанием по меньшей мере 35 мас.% Al2О3, и (б) по меньшей мере 0,1 мас.% N, при этом расплав содержит не более 10 мас.% совокупного количества As2O3 ...

СПОСОБ ИЗГОТОВЛЕНИЯ ДЕТАЛИ ИЗ КОМПОЗИТНОГО МАТЕРИАЛА ПОСРЕДСТВОМ САМОРАСПРОСТРАНЯЮЩЕГОСЯ ВЫСОКОТЕМПЕРАТУРНОГО СИНТЕЗА

ПРОНИЦАЕМЫЙ ОГНЕУПОРНЫЙ МАТЕРИАЛ ДЛЯ ПРОДУВАЕМОГО ГАЗОМ СОПЛА

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

СПОСОБ ПАССИВИРОВАНИЯ КОНТАКТНОЙ ПОВЕРХНОСТИ ОГНЕУПОРНОГО РЕЗЕРВУАРА, ПРЕИМУЩЕСТВЕННО ИЗ МУЛЛИТА, И ИСПОЛЬЗУЕМЫЙ В ЭТОМ СПОСОБЕ ШКИЛЕР

... 1. Способ пассивирования контактной поверхности огнеупорного резервуара, преимущественно из муллита, отличающийся тем, что он включает в себя следующие операции: a) нанесение на контактную поверхность покрытия, содержащего от 50 до 70 мас.% муки оксида алюминия Al2O3 и от 30 до 50 мас.% связующего, при этом само указанное связующее содержит от 50 до 60 мас.% хлорида алюминия AlCl3, растворенного в от 40 до 50 мас.% воды; b) сушку; c) обжиг резервуара в окисляющей атмосфере при температуре от 1450 до 1550°С в течение по меньшей мере 20 мин. 2. Способ по п.1, отличающийся тем, что покрытие также содержит органический краситель, растворимый в воде. 3. Способ по п.2, отличающийся тем, что краситель является метиленовой синью с общим содержанием от 0,1 до 0,5 мас.%. 4. Способ по любому из пп.1-3, отличающийся тем, что покрытие содержит от 50 до 55 мас.% муки оксида алюминия Al2O3 и от 45 до 50 мас.% связующего, и тем, что его наносят распылителем. 5. Способ по любому из пп.1-3, отличающийся ...

VERFAHREN ZUM ENTFERNEN VON METALL AUS VERBUNDKÖRPERN UND SO ERHALTENE PRODUKTE

SCHLEIFKÖRNER AUF DER BASIS VON ALUMINIUM- UND ZIRKONIUMOXYNITRID

Preparation of a powder mixture useful in which ceramic and metallic powders are mixed with a solvent and deagglomerated useful for production of sintered ceramic products

Preparation of a powder mixture for production of ceramic sintered products in which one or more ceramic and metallic powders are mixed with a solvent, e.g. alcohol and optionally a dispersing agent, deagglomerated, so that on addition of organic additives as binder and plasticizer, the mixture can be homogenized and degassed by solvent evaporation and granulated to give a granulate for ceramic sintered products is new. A process for preparation of a powder mixture for production of ceramic sintered products for reaction conditions in which one or more ceramic and metallic powders is mixed with a solvent, e.g. alcohol and optionally a dispersing agent, deagglomerated, so that on addition of organic additives as binder and plasticizer, the mixture can be homogenized and after removal from, e.g. a grinding mill, degassed by solvent evaporation and granulated to give a granulate for ceramic sintered products. A mixture of preferably an alcoholic solvent and dispersing agent is made and divided ...

Verfahren zum Herstellen eines Verbundwerkstoff-Bauteils

Die Erfindung betrifft ein Verfahren zum Herstellen eines Verbundwerkstoff-Bauteils mit den Schritten: Pressen eines Pulvers, welches zumindest ein erstes Metall (12) und ein zweites Metall (14), welches oxophiler als das erste Metall (12) ist, umfasst, in eine Vorform des späteren Verbundwerkstoff-Bauteils (S1), und Härten des späteren Verbundwerkstoff-Bauteils durch Wärmebehandlung der Vorform des späteren Verbundwerkstoff-Bauteils (S4), wodurch das erste Metall (12) in eine Matrix aus zumindest dem zweiten Metall (14) oder das zweite Metall (14) in eine Matrix aus zumindest dem ersten Metall (12) eingebettet wird, wobei vor, während oder nach dem Pressen der Vorform des späteren Verbundwerkstoff-Bauteils zumindest das zweite Metall (14) mittels einer inneren Oxidation als Keramik in seine oxidierte Form überführt wird (S2). Ebenso betrifft die Erfindung ein Verbundwerkstoff-Bauteil.

SiC-Diamant-Kompositwerkstoff und Verfahren zu seiner Herstellung

SiC-Diamant-Kompositwerkstoff, der zumindest in einem Bereich an der Oberfläche mit in SiC und/oder Si gelöstem Aluminium oder Bor und Aluminium elektrisch leitend ist; wobei Aluminium mit einem Anteil im Bereich 0,03 Masse-% bis 1 Masse-% enthalten ist.

Isolierkeramik für elektrische Schaltungen und zugehörige Anwendungen

Die Erfindung gibt einen keramischen Isolierkörper (1) an, aufweisend:- Partikel und/oder Fasern (2) mindestens eines Metalls in einem vorgebbaren Bereich (3) des Isolierkörpers,- wobei die Konzentration des Metalls einen den thermischen Ausdehnungskoeffizienten und/oder den Wärmeleitkoeffizienten des Isolierkörpers (1) verändernden Gradienten aufweist. Eine Schaltungsträgeranordnung, eine Schaltungsanordnung, ein Stromrichter und ein Luftfahrzeug mit einem derartigen Isolierkörper werden ebenfalls angegeben.

Verfahren zur Herstellung von Metallfluorid-Solen und -Gelen

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Metallfluorid-Solen und -Gelen, umfassend die Schritte: a) Bereitstellen eines Metalls, b) Bereitstellen einer Lösung von Fluorwasserstoff in einem nichtwässrigen Lösungsmittel und c) Umsetzen des Metalls mit der Lösung von Fluorwasserstoff in einem nichtwässrigen Lösungsmittel zur Ausbildung eines Metallfluorid-Sols.

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

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

Faserverstärkte keramische Verbundwerkstoffe

Faserverstärkte keramische Verbundwerkstoffe, dadurch gekennzeichnet, daß sie mindestens zwei Lagen aus multidirektionalem Fasergewebe als Verstärkung enthalten, wobei mindestens 5% der Fläche jeder Fasergewebelage von Matrixmaterial durchsetzt ist, Reibscheiben, die diese als Kern- oder Tragzone enthalten, Verfahren zu deren Herstellung und deren Verwendung als Brems- oder Kupplungsscheiben.

PCBN Material, Method for making same, tools comprising same and method of using same

Conductor composition II

Superhard Constructions & Methods of Making Same

A super hard polycrystalline construction 40 comprises a first region 44 comprising a body of thermally stable polycrystalline diamond (PCD) material comprising intergrown grains of diamond material forming a working surface 4, a substrate 42 and a region interposed 46 between the first region and the substrate, the interposed region comprising a diamond composite material comprising a first phase comprising a plurality of non-intergrown diamond grains and a matrix material, at least a portion of the interface 47 between the substrate and the interposed region having an uneven topology. The diamond composite material is more acid resistant than PCD material having a binder-catalyst comprising cobalt or more acid resistant than cemented tungsten carbide material. The interposed region may comprise a second phase, preferably comprising cubic boron nitride or tungsten carbide. The uneven topology may be irregular or rugged or may comprise peaks and troughs. A method of forming said construction ...

Superhard Constructions & Methods of Making Same

A polycrystalline super hard construction 30 comprises a first region 34 comprising a body of thermally stable polycrystalline material comprising a plurality of grains of super hard material and having an exposed surface 4 forming a working surface and a peripheral side edge 6, a substrate 32 and a region 36 interposed between the first region and the substrate, extending across the surface of the substrate along an interface 37 comprising a portion having an uneven topology and a substantially planar portion and comprising a composite material comprising a first phase comprising a plurality of non-intergrown diamond grains and a matrix material. The composite preferably comprises a second phase that may comprise cubic boron nitride or tungsten carbide. A method of forming said construction comprises forming a pre-sinter assembly comprising of first mass of grains or particles of a super hard material and a source of catalysing material, a further mass comprising diamond grains or particles ...

Sintered polycrystalline cubic boron nitride material

FIREPROOF PRODUCT

PROCEDURE FOR THE PRODUCTION OF A HEATING ELEMENT OF THE MOLYBDÄNSILIZID TYPE AND HEATING ELEMENT

PROCEDURE FOR THE PRODUCTION OF A SILICON CARBIDE KOMPOSITS

PROCEDURE FOR PRODUCTION A MATERIAL WITH A SURFACE FROM A METAL CARBIDE OF A CARBON SURFACE

PROCEDURE AND SCHLICKER FOR THE PRODUCTION OF A MOLDED ARTICLE FROM CERAMIC MATERIAL, CERAMIC MOLDED ARTICLE AND USE OF SUCH A MOLDED ARTICLE

SINTERED CERAMIC PRODUCT WITH NITROGENOUS FORM WITH IMPROVED SURFACE PROPERTIES

ROHSTOFFGRANALIENGRANULAT FÜR FEUERFESTE ERZEUGNISSE SOWIE VERFAHREN ZUR HERSTELLUNG UND VERWENDUNG DES ROHSTOFFGRANALIENGRANULATS

IMPROVED BONDING MATERIAL AND PROCEDURE FOR THE PRODUCTION OF THE BONDING MATERIAL

PRODUCTION OF AN ELECTRICALLY LEADING ARTICLE FROM CARBORUNDUM

PROCEDURE FOR THE PRODUCTION OF MONOLITHIC HYDRATISIERTEN ALUMINA AND VERBUNDMATERIALEN

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

PROCEDURE FOR THE PRODUCTION OF A MUFFEL FOR FEINODER MODEL CASTING AS WELL AS COMPOSITION TO THEIR PRODUCTION

PROCEDURE FOR THE PRODUCTION OF AN ABSTENTION OF CERAMIC(S) MATERIAL A CONCAVITY.

PRODUCTION OF CERAMIC AND METAL-CERAMIC FUELLSTOFF CONTAINING COMPOUND BODIES.

PROCEDURE FOR THE SPRAYING PROCESSING OF REFRACTORY MATERIALS.

SCHLEIFKÖRNER ON THE BASIS OF ALUMINUM AND ZIRKONIUMOXYNITRID

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

PRODUCTION OF CERAMIC AND CERAMIC-METAL COMPOSITE ARTICLES INCORPORATING FILLER MATERIALS

Carbon-containing refractory, method for manufacture thereof, and pitch-containing refractory raw material

Refractory and method for production thereof, and raw material for refractory

Al2o3-la2o3-y2o3-mgo ceramics, and methods of making the same

Superhard dielectric compounds and methods of preparation

SUPERHARD DIELECTRIC COMPOUNDS AND METHODS OF PREPARATION

The use of conductor compositions in electronic circuits

POROUS SILICON CARBIDE CERAMIC MATERIAL AND METHOD FOR THE PRODUCTION THEREOF

Nanometric-sized ceramic materials, process for their synthesis and uses thereof

Slagline sleeve for submerged entry nozzle and composition therefor

CERAMIC/METAL COMPOSITE MATERIAL AND METHOD FOR MAKING SAME

An ceramic/metal composite material is disclosed which is fully reacted with aluminum. The composite is made from a ceramic preform, such as silicon carbide, having a binding agent, such as silica, that is contacted with a metal mixture or alloy, such as aluminum/silicon, that reacts with the binding agent to form a ceramic/metal composite material. Also disclosed is a method of making the composite material and articles made incorporating the material.

METHOD FOR THE PRODUCTION OF A DIAPHRAGM VACUUM MEASURING CELL

The invention relates to a capacitive vacuum measuring cell (8) which is produced entirely from a ceramic material. Small amounts of aluminium (3, 6) are provided between the aluminium oxide ceramic parts that are to be connected in regions that are to have seals or connections applied, or where passages or measuring connections are located and the two parts are combined at an increased temperature and pressure in the presence of a protective atmosphere containing a reductive gas such as hydrogen. This produces a solid connection. In an additional subsequent step the residual metallic aluminium in the connection region (3, 6) is oxidised at an increased temperature in an atmosphere containing oxygen to form aluminium oxide. As a result, the connection region (3, 6) consists essentially of the same material as the parts to be connected, thus achieving a high corrosion resistance, in particular in regions that are exposed to the aggressive process gases.

METHOD FOR THE PRODUCTION OF A DIAPHRAGM VACUUM MEASURING CELL

The invention relates to a capacitive vacuum measuring cell (8) which is produced entirely from a ceramic material. Small amounts of aluminium (3, 6) are provided between the aluminium oxide ceramic parts that are to be conne cted in regions that are to have seals or connections applied, or where pass ages or measuring connections are located and the two parts are combined at an increased temperature and pressure in the presence of a protective atmosp here containing a reductive gas such as hydrogen. This produces a solid conn ection. In an additional subsequent step the residual metallic aluminium in the connection region (3, 6) is oxidised at an increased temperature in an a tmosphere containing oxygen to form aluminium oxide. As a result, the connec tion region (3, 6) consists essentially of the same material as the parts to be connected, thus achieving a high corrosion resistance, in particular in regions that are exposed to the aggressive process gases.

3-D PRINTING OF NEAR NET SHAPE PRODUCTS

The disclosed method relates to manufacture of a near net-shaped products such as ceramic containing products such as ceramic-metal composites. The method entails forming a mixture of a build material and a binder and depositing that mixture onto a surface to produce a layer of the mixture. An activator fluid then is applied to at least one selected region of the layer to bond the binder to the build material to yield a shaped pattern. These steps may be repeated to produce a porous whitebody that is heat treated to yield a porous greenbody preform having a porosity of about 30% to about 70 %. The greenbody then is impregnated with a molten material such as molten metal. Where the build material is SiC, the molten metal employed is Si to generate a SiC-Si composite.

CUBIC BORON NITRIDE SINTERED BODY AND CUBIC BORON NITRIDE SINTERED BODY TOOL

... cBN sintered body includes cBN and a binder phase, wherein a content of the cBN is 82-98 volume %, and in a cross section of the cBN sintered body, an isolated binder phase having an area of 0.05-0.5 µm2 has a protrusion of two or more steps, and assuming that in a first-step protrusion, A1 represents a side length which is perpendicular in a tip direction, and B1 represents a side length which is parallel in the tip direction; and in a second-step protrusion, A2 represents a side length which is perpendicular in the tip direction, and B2 represents a side length which is parallel in the tip direction, an area ratio of an isolated binder phase having a protrusion in which A1/B1 is 1-10 times of A2/B2, to the whole of the binder phase having the area of 0.05-0.5 µm2, is 25% or more.

CERAMIC POWDERS COATED WITH A NANOPARTICLE LAYER AND PROCESS FOR OBTAINING THEREOF

The present invention refers to ceramic powders coated with a layer of nanoparticles of multiple crystalline structures and process for obtaining the same. These coatings are obtained by means of the introduction of precursors in water in oil emulsions, which upon decomposition during its detonation, form the nanoparticles that adhere to the surface of the ceramic powder intended to coat. The later base ceramic powder can be synthesized during the emulsion detonation (W/0) or simply be directly placed in its composition. The properties of the obtained coating, such as thickness, adhesion, porosity and coated surface percentage, can be adjusted according to the application desired, the ceramic powders coated being applicable to several types of areas of the nanotechnology, such as electronics, biomedicine, chemistry, ceramics and energy industries.

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.

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).

MAGNESIA CARBON BRICK AND PRODUCTION METHOD THEREFOR

The present invention provides a magnesia carbon brick which does not contain graphite and has superior spalling resistance and corrosion resistance, and a method for producing the magnesia carbon brick. The magnesia carbon brick according to the present invention contains a total of 0.1-2.0 mass% of pitch and/or carbon black, a total of 0.1-1.0 mass% of aluminum and/or an aluminum alloy, 3.0-10.0 mass% of a magnesia having a particle size of less than 0.075 mm, and 87.0-96.0 mass% of a magnesia having a particle size of not less than 0.075 mm but less than 5 mm. The mass ratio of the magnesia having a particle size of not less than 1 mm but less than 5 mm with respect to the magnesia having a particle size of not less than 0.075 mm but less than 1 mm is 1.66-2.34. When an organic binder is added to a refractory raw material mixture which does not contain graphite, and the resultant mixture is kneaded, molded, and heated so as to obtain the magnesia carbon brick, the obtained magnesia carbon ...

COATED ARTICLE WITH TRANSPARENT CONDUCTIVE OXIDE FILM DOPED TO ADJUST FERMI LEVEL, AND METHOD OF MAKING SAME

A transparent conductive oxide (TCO) based film is formed on a substrate. The film may be formed by sputter-depositing, so as to include both a primary dopant (e.g., Al) and a co-dopant (e.g., Ag). The benefit of using the co- dopant in depositing the TCO inclusive film may be two-fold: (a) it may prevent or reduce self- compensation of the primary dopant by a more proper positioning of the Fermi level, and/or (b) it may promote declustering of the primary dopant, thereby freeing up space in the metal sublattice and permitting more primary dopant to create electrically active centers so as to improve conductivity of the film. Accordingly, the use of the co-dopant permits the primary dopant to be more effective in enhancing conductivity of the TCO inclusive film, without significantly sacrificing visible transmission characteristics. An example TCO in certain embodiments is ZnA10x:Ag.

COMPOSITE SINTERED BODY

... ²²A composite sintered body according to the present invention contains at least ²²cubic boron nitride and a binder Cubic boron nitride has a continuous ²structure as a ²result of bonding of a plurality of cubic boron nitride particles to each ²other. The ²binder has a continuous structure as a result of bonding of a plurality of ²binder particles ²to each other, that are present in a region except for a bonding interface ²where the cubic ²boron nitride particles are bonded to each other.²² ...

ALUMINIUM AND ZIRCONIUM OXYNITRIDE ABRASIVE GRAINS

L'invention a pour objet des grains abrasifs à base de corindon-zircone contenant en poids plus de 50% de mélange eutectique alumine-zircone, caractérisés en ce qu'ils contiennent de 0,3 à 3% d'azote, et que les cristaux de zircone sont à plus de 75% sous forme cubique. Ces grains abrasifs sont utilisés notamment pour la fabrication de meules de rectification, de toiles et papiers abrasifs, de pâte à polir et d'abrasifs projetés.

CERAMIC BATCH AND ASSOCIATED PRODUCT FOR FIREPROOF APPLICATIONS

The invention relates to a ceramic batch for fireproof applications, containing between 83 and 99.5 wt. % of at least one refractory base product in a grain fraction of less than 8mm, and between 0.5 and 12 wt. % of at least one separate granulated SiO2 carrier, and possible remnants i.e. other constituents. The invention also relates to a product using said batch.

REFRACTORY FOR STEEL CASTING, PLATE FOR SLIDING NOZZLE DEVICE, AND METHOD FOR PRODUCING REFRACTORY FOR STEEL CASTING

The present invention addresses the problem of suppressing the breakdown of a refractory containing metal aluminium. This refractory for steel casting contains 1-10 mass%, inclusive, of free carbon and 1-15 mass%, inclusive, of metal aluminium, the balance comprising a refractory material including a metal oxide, and is characterized in that formula (1) is satisfied when the metal aluminium content in the refractory is termed Al mass%, the apparent porosity is termed P%, and the bulk density is termed D. 0.31xAl = (P-4)/D ··· Formula (1) ...

SINTERED COMPACT AND CUTTING TOOL

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

CASTABLE REFRACTORY COMPOSITION

Castable refractory compositions, refractory linings and articles formed therefrom and methods of installing a refractory from said castable refractory composition.

CERAMIC PREFORMS HAVING HIGH MECHANICAL STRENGH, A PROCESS FOR THEIR PREPARATION AND METAL MATRIX COMPOSITES OBTAINED FROM SAID CERAMIC PREFORMS

Preforms for metal matrix composites consisting of ceramic material belonging to the class of oxides, nitrides, carbides, borides, oxynitrides and the like, prevailingly in an acicular form and having monocrystalline or polycrystalline structure, having a density ranging from 0.2 to 1.6 g/cm3 and porosity ranging from 50 to 95%.

THE BONDING OF BODIES OF REFRACTORY HARD MATERIALS TO CARBONACEOUS SUPPORTS

Bodies (3) such as tiles, plates, slabs or bricks of Refractory Hard Material (RHM) or other refractory composites are bonded to the cathodes or to other components, in particular to a carbon cell bottom (1), of a cell for the production of aluminium by electrolysis of a cryolite-based molten electrolyte, made of carbonaceous or other electrically conductive refractory material, by a non-reactive colloidal slurry (4) comprising particulate performed RHM in a colloidal carrier selected from colloidal alumina, colloidal yttria and colloidal ceria. The slurry usually comprises preformed particulate TiB2 in colloidal alumina. The bodies (3) are usually TiB2-Al2O3 composites. The bonding is achieved simply by applying the slurry and allowing it to dry.

BEARING MATERIAL OF SILICON CARBIDE

A bearing material of silicon carbide particularly useful for application in the hot water field is provided having improved corrosion resistance under increased thermal stresses wherein the bearing material is characterized by a predominantly course-grained silicon carbide matrix of pressureless sintered silicon carbide having a biamodal grain sized distribution wherein the biomodal grain size distribution is formed by from 50 to 90% by volume of prismatic, tabular, silicon carbide crystallites having a length of from 100 to 1500 .mu.m and from 10 to 50% by volume of prismatic tabular silicon carbide crystallites having a length of from 5 to < 100 .mu.m.

HIGH HARDNESS AND STRENGTH SINTERED BODY

A sintered body contains hard particles having high pressure type boron nitride particles covered by a coating layer and a binding material for integrating these hard particles. The coating layer contains as a starting material at least one of nitride and boride of Ti, Zr and Hf and solid-solution thereof and has an average thickness of 0.09 .mu.m to 2 .mu.m. The binding material contains as starting material 0.5% to 40% by weight of one or more of Al, elements belonging to iron group and nitride and boride thereof, less than 5% by weight of oxide of these elements, and the balance of one or more of nitride and boride of Ti, Zr, Hf and Ta and inevitable impurities. The proportion of the hard particles in the total weight of unsintered starting materials is from 10% to 99% by weight.

Elément de chauffage pour dispositif de métallisation sous vide, et procédé de fabrication dudit

Procédé de fabrication d'un article électriquement conducteur

Procédé de fabrication d'un article comprenant au moins une phase dure à haut point de fusion et article obtenu par ce procédé

METHOD OF PRODUCTION OF ARTICLES, CONTAINING POROUS ALPHA - SILICON CARBIDE, AND ARTICLE, PRODUCED WITH THE HELP OF THIS METHOD

THE CASTING REFRACTORY COMPOSITIONS AND THEIR USE IN FORMING AND RESTORATION OF MONOLITHIC REFRACTORY LININGS

NANO-SIZED CERAMIC MATERIALS, PRODUCTION METHOD AND APPLICATION

БЕСЦЕМЕНТНАЯ ОГНЕУПОРНАЯ СМЕСЬ ДЛЯ ИЗГОТОВЛЕНИЯ ОГНЕУПОРНОГО ИЗДЕЛИЯ, ОГНЕУПОРНОЕ ИЗДЕЛИЕ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Изобретение обеспечивает бесцементную огнеупорную смесь. Смесь включает рН-буфер и компонент, который включает метал лили тонодисперсный кремнезем. Вода может придавать смеси надлежащие характеристики текучести и может обеспечивать эффективное затвердевание при низкой температуре. При повышенных температурах изделие, сформованное с применением данной смеси, имеет превосходную огнеупорность и физические свойства.

ПРОНИКНИЙ ВОГНЕТРИВКИЙ МАТЕРІАЛ ДЛЯ РОЗЛИВАЛЬНОГО СТАКАНА З ГАЗОВИМ ПРОДУВАННЯМ

Описано зв'язану смолою проникну композицію, яку застосовують як пористий елемент у розливальному стакані з нагнітанням газу. Проникна композиція є особливо корисною у зв'язаному смолою розливальному стакані з нагнітанням газу, який не має оболонки і який характеризується тим, що зв'язана смолою непроникна композиція заміняє металеву оболонку. В оптимальному варіанті зв'язані смолою композиції включають поглинач кисню для відокремлення кисню, доки кисень не досяг розплавленої сталі. Описано спосіб виготовлення розливального стакана, який включає спільне пресування стандартної зв'язаної смолою композиції навколо зв'язаної смолою проникної композиції. Пресовану деталь піддають термообробці для затверднення при температурах, нижчих ніж приблизно 800°С.

The method of manufacturing CBN material

METHOD FOR PRODUCING A CERAMIC FROM A CHEMICAL REACTION

Herbst bremer goldschlaegerei

Energy-saving environment-friendly type archaized brick and preparation method thereof

Carbon aluminum-composite material improved thermal properties

Method for preparing amorphous material and ceramics

玻璃熔炉用耐火材料系统

... 玻璃熔炉用耐火材料系统，包含氧化铝、氧化锆和与二氧化硅粘合剂混合的二氧化硅。耐火材料可以形成为耐火材料块或直接在玻璃熔炉的磨损部分上形成。可以采用铸造、泵送或喷浆法方法形成耐火材料。 ...

FURNACE OF COOKING OF BLOCKS CARBONS

METHOD FOR PRODUCING A PART MADE OF A COMPOSITE MATERIAL

MANUFACTORING PROCESS OF COMPOSITE MATERIAL PART HAS CERAMIC MATRIX CONTAINING OF THE PHASES OF HEALING AND DEVIATIVE MATRIX CRACKS

REFRACTORY MATERIAL WITH SIALON MATRIX

REFRACTORY PRODUCT HAS MATRIX OF SIAION, ALUMINA AND SILICON.

REFRACTORY PRODUCT HAS MATRIX OF SIAION, ALUMINA AND SILICON.

PROCESS FOR MANUFACTURING A PART MADE OF A CERAMIC MATRIX COMPOSITE

L'invention concerne un procédé de fabrication d'une pièce en matériau composite comprenant un renfort fibreux et une matrice céramique présente dans la porosité du renfort fibreux, le procédé comprenant au moins les étapes suivantes : a) la formation du renfort fibreux par tissage tridimensionnel de fils céramiques (étape E1), le renfort fibreux ainsi formé présentant une armure interlock ; b) la formation d'une première phase de matrice céramique dans la porosité du renfort fibreux (étape E4) ; c) l'introduction dans la porosité du renfort fibreux, après mise en œuvre de l'étape b), d'une poudre comprenant des particules céramiques et/ou des particules de carbone (étape E5) ; et d) l'infiltration du renfort fibreux obtenu après mise en œuvre de l'étape c) par une composition d'infiltration à l'état fondu comprenant au moins du silicium de manière à former une deuxième phase de matrice céramique dans la porosité du renfort fibreux et obtenir ainsi la pièce en matériau composite (étape ...

SILICON CARBIDE-BASED, POROUS STRUCTURAL MATERIAL BEING HEAT-RESISTANT AND SUPER-LIGHTWEIGHT, AND PROCESS FOR PRODUCING THE SAME

THE USE OF CONDUCTOR COMPOSITIONS IN ELECTRONIC CIRCUITS

Sintered Body Having High Strength

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 ...

서미스터용 금속 질화물 재료 및 그 제조 방법 그리고 필름형 서미스터 센서

... 서미스터에 사용되는 금속 질화물 재료로서, 일반식 : MxAlyNz (단, M 은 Fe, Co, Mn, Cu 및 Ni 중 적어도 1 종을 나타낸다. 0.70 ≤ y/(x ＋ y) ≤ 0.98, 0.4 ≤ z ≤ 0.5, x ＋ y ＋ z ＝ 1) 로 나타내는 금속 질화물로 이루어지고, 그 결정 구조가 육방정계의 우르츠광형의 단상이다. 이 서미스터용 금속 질화물 재료의 제조 방법은, M-Al 합금 스퍼터링 타깃 (단, M 은 Fe, Co, Mn, Cu 및 Ni 중 적어도 1 종을 나타낸다.) 을 사용하여 질소 함유 분위기 중에서 반응성 스퍼터를 실시하여 성막하는 성막 공정을 갖고 있다.

HIGH-STRENGTH, HIGHLY THERMALLY CONDUCTIVE SINTERED COMPACT OF CUBIC BORON NITRIDE EXCELLENT IN BOTH CHIPPING RESISTANCE AND CRATER WEAR RESISTANCE

PURPOSE: Provided is a conductive sintered compact of cubic boron nitride, which enhances toughness and thermal conductance simultaneously and is excellent in both chipping resistance and crater wear resistance to provide a tool suitable for heavy interrupted cutting of hardened steel of large hardness. CONSTITUTION: The high-strength, highly thermally conductive sintered compact of cubic boron nitride contains cubic boron nitride(cBN) grains and a binder binding the grains. More specifically, it is formed of at least 40% by volume and at most 85% by volume of cBN grains, and a binder corresponding to the remainder and formed of at least one selected from the group consisting of a nitride, a carbide, a boride, and an oxide of an element belonging to the 4a, 5a and 6a groups of the periodic table and a solid solution thereof, an aluminum compound, and an unavoidable impurity, and the cBN grains contain at most 0.03% by mass of Mg and at least 0.001% by mass and at most 0.05% by mass of Li ...

ALLOY POWDER FOR AW MATERIAL OF INORGANIC FUNCTIONAL MATERIAL AND PHOSPHOR

ABRASIVE PARTICLE PLURALITY, METHOD TO MANUFACTURE ABRASIVE PARTICLES, ABRASIVE ARTICLE, AND, METHOD FOR ABRADAR A SURFACE

bocal de imersão e método para lingotamento contìnuo de aço

Cubic boron nitride compact

A CBN compact which contains CBN and a matrix phase, wherein the CBN grain size volume frequency distribution has a distribution spread expressed as d90-d10 of 1 micron or greater, and the d90 maximum value is 5 micron or less.

Polycrystalline diamond element

An embodiment of a PCD insert comprises an embodiment of a PCD element joined to a cemented carbide substrate at an interface. The PCD element has internal diamond surfaces defining interstices between them. The PCD element comprises a masked or passivated region and an unmasked or unpassivated region, the unmasked or unpassivated region defining a boundary with the substrate, the boundary being the interface. At least some of the internal diamond surfaces of the masked or passivated region contact a mask or passivation medium, and some or ail of the interstices of the masked or passivated region and of the unmasked or unpassivated region are at least partially filled with an infiltrant material.

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

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

Methods for making aluminum nitride armor bodies

A method of making aluminum nitride armor bodies is provided. The method starts with low cost bulk raw material, in the form of aluminum or aluminum alloy, cryogenically mills the raw material into a precursor powder, which is essentially free of oxides and other undesirable impurities. The precursor powder is formed into a pre-form using low cost, short residence time molding processes. Finally, the pre-form is exposed to a nitriding process to convert the pre-form into the aluminum nitride armor body. In this manner, the method avoids the use of high cost aluminum nitride as a starting material and avoids the need for the high cost, single axis densification processes of the prior art.

Apparatus for producing metal oxide nanofibers and method for producing metal oxide nanofibers

An apparatus for producing metal oxide nanofibers includes a jetting unit, a mixing unit, a heating unit, and a cooling unit. The jetting unit jets particles made of a metal. The mixing unit prepares a mixture by mixing the metal particles and a gas containing an oxidizing component that includes oxygen in molecules of the component. The heating unit heats the mixture to raise the temperature of the mixture up to a temperature at which the metal evaporates. The cooling unit cools the product thus-produced in the heating unit.

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

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

Abrasive Grains Based on Zirconia Alumina

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

Method for fabricating ceramic material

A method for a fabricating a ceramic material includes providing a mixture of a reactive metallic filler material with a preceramic polysilazane material. The preceramic polysilazane material is then polymerized to form a green body. The green body is then thermally treated in an environment that is substantially free of oxygen to convert the polymerized preceramic polysilazane material into a ceramic material that includes at least one nitride phase that is a reaction product of the reactive metallic filler material and a preceramic polysilazane material.

CUTTING TOOL MADE OF CUBIC BORON NITRIDE-BASED SINTERED MATERIAL

A cutting tool made of cubic boron nitride-based sintered material that exhibits excellent chipping resistance and fracturing resistance in the intermittent cutting work on high hardness steel is provided. In the cutting tool, the average size of the cubic boron nitride particles is 0.5 to 8 μm. A portion of the cubic boron nitride particles are coated with aluminum oxide films having an average thickness of 10 to 90 nm on surfaces thereof, and a rift is partially formed in the aluminum oxide film. The average rift formation ratio satisfies the formula 0.02≦h/H≦0.08, wherein h is a breadth of the rift of the aluminum oxide film and H is a girth of the particle of cubic boron nitride. 1. A cutting tool made of cubic boron nitride-based sintered material , comprising:cubic boron nitride particles as a hard phase component, whereinan average size of the cubic boron nitride particles is in a range of 0.5 to 8 μm,a portion of each of the cubic boron nitride particles is coated with aluminum oxide film having an average thickness of 10 to 90 nm on surfaces thereof, anda rift is partially formed in the aluminum oxide film.2. The cutting tool made of cubic boron nitride-based sintered material according to claim 1 , wherein in a case of:observing an image of a cross section of the cubic boron nitride particles coated by the aluminum oxide film; andobtaining an average rift formation ratio to the aluminum oxide film formed along the surfaces of the coated cubic boron nitride particles,a formula 0.02≦h/H≦0.08 is satisfied, whereh is a breadth of the rift of the aluminum oxide film and H is a girth of the particle of cubic boron nitride.3. The cutting tool made of cubic boron-nitride based sintered material according to claim 1 , wherein in a case of obtaining a ratio of a number of the cubic boron nitride particles coated by the aluminum oxide film claim 1 , which have the average thickness of 10 to 90 nm on surfaces thereof and the rift is partially formed in claim 1 , a ...

CASTABLE REFRACTORY COMPOSITION

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

A Heating Element

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

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

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

Neutron Absorbing Composite Material and Method of Manufacture

A method of producing a neutron absorbing plate constructed of a boron carbide aluminum matrix composite material is disclosed. The method includes mixing a 30-50 micron average particle size B4C powder with an aqueous organic binder component to form a slurry; then drying the slurry at a temperature from about 20 to about 90 degrees Celsius until a dried cake comprising 1-20 percent organic binder of the total weight of said dry cake is formed; then granulating said dried cake to yield a granule size from about 0.5 mm to about 3 mm; then compressing said granules under pressure to create a particulate preform having an interior open porosity; and finally infiltrating the preform under pressure with a liquid metal, to form a metal matrix composite with uniform B4C particle loading. 1. A method of producing a neutron absorbing Metal Matrix Composite , comprising the steps of:mixing a 30-50 micron average particle size B4C powder with an aqueous organic binder component to form a slurry;drying said slurry at a temperature from about 20 to about 90 degrees Celsius until a dried cake comprising 1-20 percent organic binder of the total weight of said dry cake is formed;granulating said dried cake to yield a granule size from about 0.5 mm to about 3 mm;compressing said granules under pressure to create a particulate preform having an interior open porosity;infiltrating said preform under pressure with a liquid metal, said metal infiltrating said interior open porosity of said preform to form a metal matrix composite, said metal matrix composite having uniform B4C particle loading.2. A method of producing a neutron absorbing Metal Matrix Composite as in claim 1 , wherein the step of compressing said granules further includes the steps of placing said granules in a mold cavity; thenapplying low pressure from about 10 to about 15 PSI to allow said resultant preform to conform to the dimensions of said mold cavity.3. A method of producing a neutron absorbing Metal Matrix ...

THERMOELECTRIC CONVERSION MATERIAL, THERMOELECTRIC CONVERSION ELEMENT, THERMOELECTRIC CONVERSION MODULE, AND METHOD FOR MANUFACTURING THERMOELECTRIC CONVERSION MATERIAL

A thermoelectric conversion material formed of a sintered body containing magnesium silicide as a main component contains 0.5 mass % or more and 10 mass % or less of aluminum oxide. The aluminum oxide is distributed at a crystal grain boundary of the magnesium silicide. 1. A thermoelectric conversion material formed of a sintered body containing magnesium silicide as a main component , the thermoelectric conversion material comprising 0.5 mass % or more and 10 mass % or less of aluminum oxide ,wherein the aluminum oxide is distributed at a crystal grain boundary of the magnesium silicide.2. The thermoelectric conversion material according to claim 1 , further comprising one or more elements selected from a group consisting of Li claim 1 , Na claim 1 , K claim 1 , B claim 1 , Ga claim 1 , In claim 1 , N claim 1 , P claim 1 , As claim 1 , Sb claim 1 , Bi claim 1 , Ag claim 1 , Cu claim 1 , and Y claim 1 , as a dopant.3. The thermoelectric conversion material according to claim 1 , wherein the thermoelectric conversion material is formed of the sintered body of magnesium silicide free of a dopant.4. The thermoelectric conversion material according to claim 1 , further comprising aluminum.5. The thermoelectric conversion material according to claim 4 ,wherein a concentration of aluminum in a crystal grain of the sintered body is 0.005 atom % or more and 0.20 atom % or less.6. The thermoelectric conversion material according to claim 1 ,wherein a concentration of aluminum in a crystal grain of the sintered body is 0.5 atom % or more and 2 atom % or less, the concentration being obtained by analyzing an inside of the crystal grain of the sintered body with SEM-EDX with an acceleration voltage of 3 kV after heating to 600° C. in a steam atmosphere under pressure of 200 Pa, retaining at 600° C. for 10 minutes, and cooling to 25° C.7. A thermoelectric conversion material formed of a sintered body containing magnesium silicide as a main component claim 1 ,{'sub': 2', 'x', '1- ...

Cubic boron nitride sintered body and cutting tool

A cBN sintered body contains cBN particles whose proportion is 85-97% by volume, and a binding phase whose proportion is 3-15% by volume. The cBN sintered body contains Al whose ratio to the entirety of the cBN sintered body is 0.1-5% by mass, and Co whose mass ratio to the Al is 3 to 40, and includes Al3B6Co20.

Composite Articles Comprising Metal Carbide Fibers

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

Moderator for moderating neutrons

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

Polycrystalline cubic boron nitride

The present disclosure relates to polycrystalline cubic boron nitride (PCBN) with improved fracturing-resistance and wear-resistance. The polycrystalline cubic boron nitride is prepared using CBN particles of different particle sizes. In this way, the bonding force was increased by heat treatment of the second group CBN particles and binder. At the same time, improvements of the dispersion of the CBN particles of the first and second groups and the bonding force between the binder and cubic boron nitrides were achieved at the same time. Thus, the wear-resistance and fracturing-resistance of the PCBN can be effectively improved. Further, according to the present disclosure, preparing the polycrystalline cubic boron nitride by regulating the volume ratio between the charged CBN particles may allow the wear-resistance and fracturing-resistance of the PCBN to be improved. Thus, the machining tools with excellent lifetime can be manufactured using the PCBN.

SINTERED POLYCRYSTALLINE CUBIC BORON NITRIDE MATERIAL

A polycrystalline cubic boron nitride, PCBN, material is provided. The material comprises between 30 and 90 weight percent cubic boron nitride (cBN) and a matrix material in which the cBN particles are dispersed. The matrix material comprises particles of an aluminium compound; the matrix material particles having a d50 when measured using a linear intercept technique of no more than 100 nm. 1. A method of making a polycrystalline cubic boron nitride , PCBN , material , the method comprising:mixing matrix precursor particles comprising particles having an average particle size no greater than 100 nm, the matrix precursor particles comprising an aluminium compound, with between 30 and 90 weight percent of cubic boron nitride, cBN, particles having an average particle size of at least 0.2 μm;sintering the mixed particles at a temperature of no less than 1000° C. and no more than 2200° C., and a pressure of at least 6 GPa to form the PCBN material comprising particles of cBN dispersed in a matrix material wherein the matrix material particles have a d75 when measured using an equivalent circle diameter technique of no more than 100 nm.2. The method according to claim 1 , wherein the matrix material further comprises titanium compounds of any of carbon and nitrogen.3. The method according to any one of or claim 1 , wherein the matrix material comprises any of titanium carbonitride claim 1 , titanium carbide claim 1 , titanium nitride claim 1 , titanium diboride claim 1 , aluminium nitride and aluminium oxide.4. The method according to or claim 1 , further comprising sintering at a temperature selected from any one of no more than 1700° C. claim 1 , no more than 1600° C. claim 1 , no more than 1500° C. claim 1 , no more than 1400° C. and no more than 1300° C.5. The method according to or claim 1 , wherein the step of intimately mixing the matrix powder and the cBN powder comprises any of wet acoustic mixing claim 1 , dry acoustic mixing and attrition milling.6. The ...

Additive manufacturing of ceramic turbine components by transient liquid phase bonding using metal or ceramic binders

A ceramic turbine component is formed by a process including mixing a ceramic powder with an inorganic binder powder. The powder mixture is then formed into a turbine component that is subsequently densified by transient liquid phase sintering. In an embodiment, the turbine component may be formed by an additive manufacturing process such as selective laser sintering.

REFRACTORY FOR CASTING, NOZZLE FOR CASTING AND SLIDING NOZZLE PLATE USING SAME

A refractory to be used repeatedly or for a long period of time, such as a refractory for casting, especially a nozzle for casting and an SN plate, has improved tolerance. The refractory for casting contains AlOC in the range of 15 to 60% by mass, both inclusive, an Al component as a metal in the range of 1.2 to 10.0% by mass, both inclusive, and a balance including AlO, a free C, and other refractory component; a sum of AlOC, AlO, and the Al component as a metal is 85% or more by mass; and a content of AlOC (AlOC), a content of the Al component as a metal (Al), and a content of the free carbon (C). The contact of the free carbon satisfies the following Equation 1 and Equation 2: 1. A refractory for casting , wherein the refractory for casting contains AlOC in the range of 15 to 60% by mass , both inclusive , an Al component as a metal in the range of 1.2 to 10.0% by mass , both inclusive , and a balance comprising AlO , a free C , and other refractory component; a sum of AlOC , AlO , and the Al component as a metal is 85% or more by mass; and a content of AlOC (AlOC) , a content of the Al component as a metal (Al) , and a content of the free C (C) satisfy following Equation 1 and Equation 2:{'br': None, 'sub': 4', '4, '1.0≦C/(AlOC×0.038+Al×0.33)\u2003\u2003Equation 1'}{'br': None, 'sub': 4', '4, '1.0≧C/(AlOC×0.13+Al×0.67)\u2003\u2003Equation 2'}2. The refractory for casting according to claim 1 , wherein the AlOC is derived from an AlOC-containing raw material particle produced by an electromelting method.3. The refractory for casting according to claim 2 , wherein a size of an AlOC crystal in the AlOC-containing raw material particle is 20 μm or more as an average diameter when a cross section of the AlOC crystal is converted to a circle.4. The refractory for casting according to claim 1 , wherein the other refractory component in the balance is one or more of the following materials: MgO claim 1 , SiO claim 1 , a tetragonal or a monoclinic ZrO claim 1 , SiC claim ...

CUBIC BORON NITRIDE SINTERED BODY AND CUTTING TOOL INCLUDING THE SAME

Provided is a cubic boron nitride sintered body including more than or equal to 85 volume percent and less than 100 volume percent of cubic boron nitride particles, and a remainder of a binder, wherein the binder contains WC, Co, and an Al compound, the binder contains WCoB, and, when Irepresents an X-ray diffraction intensity of a (111) plane of the cubic boron nitride particles, Irepresents an X-ray diffraction intensity of a (100) plane of the WC, and Irepresents an X-ray diffraction intensity of a (420) plane of the WCoB, a ratio I/Iof the Ito the Iis more than 0 and less than 0.10, and a ratio I/Iof the Ito the Iis more than 0 and less than 0.40. 1. A cubic boron nitride sintered body comprising more than or equal to 85 volume percent and less than 100 volume percent of cubic boron nitride particles , and a remainder of a binder , whereinthe binder contains WC, Co, and an Al compound,{'sub': 2', '2', '6, 'the binder contains WCoB, and'}{'sub': A', 'C', '2', '21', '6, 'when Irepresents an X-ray diffraction intensity of a (111) plane of the cubic boron nitride particles, In represents an X-ray diffraction intensity of a (100) plane of the WC, and Irepresents an X-ray diffraction intensity of a (420) plane of the WCOB,'}{'sub': C', 'A', 'C', 'A, 'a ratio I/Iof the Ito the Iis more than 0 and less than 0.10, and'}{'sub': C', 'B', 'C, 'a ratio I/Iof the Ito the In is more than 0 and less than 0.40.'}2. The cubic boron nitride sintered body according to claim 1 , wherein{'sub': C', 'A, 'the ratio I/Iis more than 0 and less than 0.05, and'}{'sub': C', 'B, 'the ratio I/Iis more than 0 and less than 0.20.'}3. A cubic boron nitride sintered body comprising more than or equal to 85 volume percent and less than 100 volume percent of cubic boron nitride particles claim 1 , and a remainder of a binder claim 1 , whereinthe binder contains WC, Co, and an Al compound, and{'sub': 2', '21', '6, 'the binder does not contain WCOB.'}4. A cutting tool comprising the cubic boron ...

Cbn sintered body and cutting tool

A cBN-based ultra-high pressure sintered body contains cBN particles and a binder phase. The binder phase contains at least one of a nitride or oxide of Al or a nitride, carbide, or carbonitride of Ti, and a metal boride having an average particle diameter of 20 to 300 nm is dispersed in an amount of 0.1 to 5.0 vol % in the binder phase. The metal boride includes a metal boride (B) containing at least one of Nb, Ta, Cr, Mo, and W as a metal component and containing no Ti and a metal boride (A) containing only Ti as a metal component. In a case where a ratio (vol %) of the metal boride (A) in the metal boride is represented by V a and a ratio (vol %) of the metal boride (B) is represented by V b , a ratio of V b /V a is 0.1 to 1.0.

Aluminium-silicon carbide composite, and power-module base plate

To provide an aluminum-silicon carbide composite which is suitable for use as a power-module base plate. An aluminum-silicon carbide composite wherein a peripheral portion having, as a main component thereof, an aluminum-ceramic fiber composite containing ceramic fibers having an average fiber diameter of at most 20 μm and an average aspect ratio of at least 100, is provided on the periphery of a flat plate-shaped aluminum-silicon carbide composite having a plate thickness of 2 to 6 mm formed by impregnating, with a metal containing aluminum, a porous silicon carbide molded body having a silicon carbide content of 50 to 80 vol %, and wherein the proportion of the aluminum-ceramic fiber composite occupied in the peripheral portion is at least 50 area %.

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

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

ELECTROREFINING OF MAGNESIUM FROM SCRAP METAL ALUMINUM OR MAGNESIUM ALLOYS

The invention comprises methods and apparatuses for the electrorefining of Mg from Al or Mg alloy scrap. The invention utilizes the density and charge features of Mg present in a melted alloy to continuously extract Mg and Mg alloys from a melted Al alloy feed. 134-. (canceled)35. A method of removing Mg from Al scrap while recovering primary quality Mg master alloys , comprising:a. melting Al scrap in a melter;b. delivering melted Al scrap to a Mg recovery electrorefiner including an anode and a cathode; andc. extracting from the melted Al scrap a Mg—Al alloy product at said cathode and an Al alloy product at said anode by applying a current between the cathode and the anode.36. The method of claim 35 , further comprising recirculation of the melted Al scrap between the melter and the electrorefiner so as to provide adequate time for the electrorefining to remove and recover Mg from the Al alloy melt.37. The method of claim 36 , further comprising introducing a fluoride-based molten salt electrolyte.38. The method of claim 37 , further comprising:(a) circulating said electrolyte molten salt to an electrolytic compartment;(b) increasing a temperature of said electrolyte molten salt to dissolve oxide contamination of said electrolyte molten salt; and{'sub': '2', '(c) electrolyzing said dissolved oxide to produce CO/CO gas on a sacrificial carbon anode and Mg or Al at the cathode.'}3945-. (canceled)46. A method for refining Mg from Al alloy scrap metal claim 37 , comprising:a. simultaneously melting scrap metal in a melter and continuously recirculating molten Al alloy between the melter and an electrorefining cell;b. flowing the molten Al alloy through the electrorefining cell, wherein the electrorefining cell comprises an upper cathode current supply block and a lower anode current collection block and a Mg product collection chamber above the upper cathode current supply block;c. maintaining the level of the molten Al alloy below the cathode current supply block ...

Sintered material and cutting tool including same

A sintered material includes a cubic boron nitride, a zirconium-containing oxide, a zirconium-containing nitride, and an aluminum-containing oxide, wherein the zirconium-containing nitride includes both or one of ZrN and ZrON, and the aluminum-containing oxide includes a type Al2O3.

cBN SINTERED COMPACT AND CUTTING TOOL

Object: To provide a cBN sintered compact having high wear resistance, and a cutting tool having high wear resistance that uses the cBN sintered compact. 1. A cBN sintered compact comprising:50 vol. % or greater of cBN particles; anda binder phase comprising Co,wherein{'sub': a', 'b, 'in the binder phase, intra-phase particles comprising CoW, where 0≤a≤0.95 and 0.05≤b≤1, are present.'}2. The cBN sintered compact according to claim 1 , wherein the intra-phase particles are present in the binder phase at a ratio of from 30 to 90 vol. %.3. The cBN sintered compact according to claim 1 , wherein the intra-phase particles comprise an alloy made from CoW claim 1 , where 0.80≤a≤0.95 and 0.05≤b≤0.20.4. The cBN sintered compact according to claim 3 , wherein the alloy is present in the binder phase at a ratio of from 20 to 90 vol. %.5. The cBN sintered compact according to claim 1 , wherein the intra-phase particles comprise a carbide made from CoWC claim 1 , where 0≤a≤0.8 and 0.2≤b≤1.6. The cBN sintered compact according to claim 5 , wherein the carbide is present in the binder phase at a ratio of from 10 to 60 vol. %.7. The cBN sintered compact according to claim 3 , wherein:{'sub': a', 'b, 'the intra-phase particles comprise a carbide made from CoWC, where 0≤a≤0.8 and0.2≤b≤1, and'}{'b': 2', '1', '2', '1, 'a ratio (S/S) of a volume ratio S of the carbide to a volume ratio S of the alloy in the binder phase is from 0.1 to 1.2.'}8. The cBN sintered compact according to claim 1 , wherein an average particle size of the intra-phase particles is from 30 to 300 nm.9. The cBN sintered compact according to claim 1 , wherein an average particle size of the cBN particles is from 1.5 to 2.5 μm.10. The cBN sintered compact according to claim 9 , wherein a maximum particle size of the binder phase claim 9 , as observed in a 30 μm square field of view of a cross-section claim 9 , is from 0.1 to 0.5 μm.11. The cBN sintered compact according to claim 1 , further comprising:Al compound ...

High temperature inks for electronic and aerospace applications

A printable material in ink form for forming electronic and structural components capable of high temperature performance may include a polymeric or oligomeric ceramic precursor. The material may also include a filler material and an optional liquid carrier. The ceramic precursor materials may be silicon carbide, silicon oxycarbide, silicon nitride, silicon carbonitride, silicon oxycarbonitride, gallium containing group 13 oligomeric compounds and mixtures thereof. The ceramic precursor may be deposited by a direct ink writing (DIW) process.

POLYCRYSTALLINE DIAMOND

An embodiment of a PCD insert comprises an embodiment of a PCD element joined to a cemented carbide substrate at an interface. The PCD element has internal diamond surfaces defining interstices between them. The PCD element comprises a masked or passivated region and an unmasked or unpassivated region, the unmasked or unpassivated region defining a boundary with the substrate, the boundary being the interface. At least some of the internal diamond surfaces of the masked or passivated region contact a mask or passivation medium, and some or all of the interstices of the masked or passivated region and of the unmasked or unpassivated region are at least partially filled with an infiltrant material. 1. A method for manufacturing a PCD element; the method including providing a PCD body having internal diamond surfaces , the internal diamond surfaces defining interstices , the PCD body containing a thermally stable region and a porous region , in which at least some of the interstices contain at least partly unfilled pores; introducing a mask or passivation medium proximate or into the thermally stable region; and introducing at least one infiltrant material into the porous region , the mask or passivation medium at least partly isolating diamond of the thermally stable region from chemical interaction with the at least one infiltrant material , wherein a controlled temperature cycle is employed in such a manner as to allow sufficient or a certain amount of the mask or passivation medium or its precursor to be introduced proximate or into the thermally stable region prior to the at least one infiltrant material melting and infiltrating into the porous PCD body.2. A method as claimed in claim 1 , in which the thermally stable region is at least partly porous.3. A method as claimed in claim 1 , the method including coating some or all of the internal diamond surfaces of the thermally stable region claim 1 , at least partially claim 1 , with a mask or passivation medium.4. ...

COMPOSITE BRAKE DISKS WITH AN INTEGRATED HEAT SINK, METHODS FOR MANUFACTURING THE SAME, AND METHODS FOR PRODUCING ENCAPSULATED HEAT SINK MATERIAL

Brake disks with integrated heat sink are provided. Brake disk includes a fiber-reinforced composite material and an encapsulated heat sink material impregnated into the fiber-reinforced composite material. The encapsulated heat sink material comprises a heat sink material encapsulated within a silicon-containing encapsulation layer. Methods for manufacturing the brake disk with integrated heat sink and methods for producing the encapsulated heat sink material are also provided. 1. A method for producing an encapsulated heat sink material , the method comprising:dispersing particles of a heat sink material in a solvent containing a surfactant to form a dispersion;adding an organic silicon precursor to the dispersion; andforming a silicon-containing encapsulation layer around the heat sink material from the organic silicon precursor.2. The method of claim 1 , wherein the surfactant comprises at least one of polyvinylpyrrolidone (PVP) polymer claim 1 , polyvinylalcohol (PVA) claim 1 , polyethylene oxide (PEO) claim 1 , polypropylene oxide (PPO) claim 1 , or acetylenic diol based chemicals.3. The method of claim 1 , wherein the solvent comprises at least one of ethanol claim 1 , 1-propanol claim 1 , 2-propanol claim 1 , 1-butanol claim 1 , or 2-butanol.4. The method of claim 1 , wherein the organic silicon precursor comprises tetraethoxy silane (Si(OCH)) and the silicon-containing encapsulation layer comprises SiO.5. The method of claim 1 , wherein the organic silicon precursor comprises a polycarbosilane and the silicon-containing encapsulation layer comprises SiC.6. The method of claim 1 , wherein the encapsulated heat sink material comprises:the heat sink material; andthe silicon-containing encapsulation layer encapsulating the heat sink material.7. The method of claim 1 , wherein the heat sink material comprises at least one of a eutectic salt claim 1 , a eutectic alloy claim 1 , or a material with a melting temperature greater than about 300° C. to about 1100° C. ...

Thermoelectric material and method for preparing the same

Provided herein are a thermoelectric material and a method for preparing the same, wherein the thermoelectric material has excellent thermoelectric performance and high mechanical properties (in particular, fracture toughness), and thus, when the thermoelectric material is applied to a thermoelectric module, the thermoelectric module has excellent performance and efficiency and a long lifespan.

Cutting elements and methods for fabricating diamond compacts and cutting elements with functionalized nanoparticles

A method of fabricating a diamond compact includes functionalizing surfaces of diamond nanoparticles with fluorine; combining the functionalized diamond nanoparticles with a non-group-VIII metal to form a particle mixture; and subjecting the particle mixture to high pressure and high temperature (HPHT) conditions to form inter-granular bonds between the diamond nanoparticles. A cutting element for an earth-boring tool includes a plurality of grains of diamond material; a plurality of diamond nanoparticles bonded to the plurality of grains of diamond material; and a non-group-VIII metal fluoride disposed within interstitial spaces between the grains of diamond material and the plurality of diamond nanoparticles. The cutting element is substantially free of a metal-solvent catalyst.

Cubic boron nitride sintered body and cutting tool

A cBN sintered body contains cBN particles whose proportion is 85-97% by volume, and a binding phase whose proportion is 3-15% by volume. The cBN sintered body contains Al whose ratio to the entirety of the cBN sintered body is 0.1-5% by mass, and Co whose mass ratio to the Al is 3 to 40, and includes Al 3 B 6 Co 20 .

Applications, Methods And Systems For Additive Manufacturing With SiOC Build Materials

Optical additive manufacturing, including laser additive manufacturing systems, apparatus and methods using polymer derived ceramic build materials. Additive manufacturing build materials are made of polymer derived ceramic including SiOC, precures, cured materials, hard cured materials, and pyrolized materials. Polymer derived ceramic build materials are mixed with and used in conjunction with other build materials. 1. A laser additive manufacturing apparatus (LAM) comprising:a polymer derived ceramic build material.2. The LAM of claim 1 , wherein the polymer derived ceramic build material comprises SiOC.3. The LAM of claim 2 , wherein the polymer derived ceramic build material comprises a liquid.4. The LAM of claim 2 , wherein the polymer derived ceramic build material comprises a solid.5. The LAM of claim 2 , wherein the polymer derived ceramic build material comprises a hard cured material.6. The LAM of claim 2 , wherein the polymer derived ceramic build material comprises a cured material.7. The LAM of claim 2 , wherein the polymer derived ceramic build material comprises a ceramic material.8. A method of additive manufacturing comprising:providing a build material selected from the group consisting of one or more of the materials, precursors, particles, pigments, cured materials, hard cured materials and pyrolized materials that are disclosed in in U.S. Pat. Nos. 9,815,952, 9,815,943, 10,167,366, 9,499,677, and in US Patent Publication Nos. 2017/0368668, 2019/0315969, and 2018/0065995, the entire disclosure of which is incorporated herein by reference.directing light in a predetermined illumination pattern at the build material, wherein the build material is formed into an article having a predetermined shape that is based upon the predetermined illumination pattern.9. The method of claim 8 , wherein the directed light is a laser beam.10. The method of claim 9 , wherein the directed light has a wavelength in the IR range.11. The method of claim 8 , wherein the ...

Cr:YAG SINTERED BODY AND PRODUCTION METHOD THEREOF

A Cr:YAG sintered body including Al, Y, Cr, Ca, Mg, Si, and O, and component contents in the sintered body satisfying conditional expressions of 1) to 3) below, provided in the Conditional expression, each chemical symbol represents a component content (atppm). 1: A Cr:YAG sintered body , comprising:Al, Y, Cr, Ca, Mg, Si, and O;component contents in the sintered body satisfying conditional expressions of 1) to 3) below; [{'br': None, '|(Y+Ca)/(Al+Cr+Si+Mg)−0.6|<0.001;\u2003\u20031)'}, {'br': None, '0≤(Ca+Mg)−(Cr+Si)≤50 atppm; and\u2003\u20032)'}, {'br': None, '50≤Si≤500 atppm.\u2003\u20033)'}], 'in the Conditional expression, each chemical symbol representing a component content (atppm);'}2: The Cr:YAG sintered body according to claim 1 , wherein optical transmittance of a wavelength of 1300 nm is 80% or higher.3: The Cr:YAG sintered body according to claim 2 , wherein a conversion ratio of Cr is Cr/(Cr+Cr)≥0.25.4: The Cr:YAG sintered body according to claim 1 , wherein a conversion ratio of Cr is Cr/(Cr+Cr)≥0.25. The present invention relates to a Cr:YAG (yttrium aluminum garnet) sintered body and its production method.YAG (yttrium aluminum garnet) is a crystal of a garnet structure formed from a complex oxide of yttrium and aluminum (YAlO). It has been known that the substituted element becomes the emission center and yields strong fluorescence by 1) forming the “Y element” configuring YAG into a substitutional solid solution by adding to YAG an element from Ce (atomic number 57) to Yb (atomic number 70) among rare earth elements, or 2) forming the “Al element” configuring YAG into a substitutional solid solution by adding to YAG an element from Ti (atomic number 22) to Ni (atomic number 28) among transition metals; and this is used to create a phosphor, a laser medium and the like.As a commonly used material, there is Nd:YAG to which Nd (neodymium) is added, which oscillates laser at a wavelength of 1064 nm. Moreover, there is a combination of Nd:YAG and YAG to ...

Sintered compact and cutting tool

A sintered compact according to the present invention includes: a first material that is cubic boron nitride; a second material that is an oxide of zirconium; and a third material that is an oxide of aluminum, the second material including cubic ZrO 2 and ZrO, the third material including α-Al 2 O 3 , and the sintered compact satisfying the following relation: 0.9≦I zro2 (111)/I al (110)≦30; and 0.3≦I zro (111)/I al (110)≦3, where I al (110), I zro2 (111), and I zro (111) respectively represent X-ray diffraction intensities of a (110) plane of the α-Al 2 O 3 , a (111) plane of the cubic ZrO 2 , and a (111) plane of the ZrO.

Aluminum-silicon-carbide composite and method of manufacturing same

[Problem to be Solved] Provided are an aluminum-silicon-carbide composite having high thermal conductivity, low thermal expansion, and low specific gravity and a method for producing the composite. [Solution] Provided is an aluminum-silicon-carbide composite formed by impregnating a porous silicon carbide molded body with an aluminum alloy. The ratio of silicon carbide in the composite is 60 vol % or more, and the composite contains 60-75 mass % of silicon carbide having a particle diameter of 80 μm or more and 800 μm or less, 20-30 mass % of silicon carbide having a particle diameter of 8 μm or more and less than 80 μm, and 5-10 mass % of silicon carbide having a particle diameter of less than 8

Diamond like carbon (dlc) coating for ethanol-blended fuel injector applications

A vehicle part or component includes a surface that is configured to contact a fuel containing ethanol. The surface has a layer of non-hydrogenated diamond like carbon (NH-DLC) material disposed on the surface. The layer of NH-DLC has a thickness of from greater than or equal to about 100 nm to less than or equal to about 100 μm. The NH-DLC material has a carbon content of greater than or equal to about 90 atomic % (at. %), a carbon-carbon sp 3 hybrid bond content of from greater than or equal to about 60% to less than or equal to about 100%, and a carbon-carbon sp 2 hybrid bond content of from greater than or equal to about 0 to less than or equal to about 40%. The NH-DLC material is substantially free of hydrogen atoms. Methods for manufacturing the vehicle part or component are also provided.

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

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

METHOD OF PRODUCING CUBIC BORON NITRIDE SINTERED MATERIAL, CUBIC BORON NITRIDE SINTERED MATERIAL, AND CUTTING TOOL INCLUDING CUBIC BORON NITRIDE SINTERED MATERIAL

A method of producing a cubic boron nitride sintered material includes: forming an organic cubic boron nitride powder by attaching an organic substance onto a cubic boron nitride source material powder; preparing a powder mixture including more than or equal to 85 volume % and less than 100 volume % of the organic cubic boron nitride powder and a remainder of a binder source material powder by mixing the organic cubic boron nitride powder and the binder source material powder, the binder source material powder including WC, Co and Al; and obtaining the cubic boron nitride sintered material by sintering the powder mixture. 16.-. (canceled)7. A cubic boron nitride sintered material comprising: more than or equal to 85 volume % and less than 100 volume % of cubic boron nitride grains; and a remainder of a binder , whereinthe binder includes WC, Co and an Al compound, and carbon exists on a whole or part of the interface, and', 'a width D of a region in which the carbon exists is more than or equal to 0.1 nm and less than or equal to 10 nm., 'when a TEM-EDX is used to analyze an interface region including an interface at which the cubic boron nitride grains are adjacent to each other,'}8. The cubic boron nitride sintered material according to claim 7 , wherein the width D is more than or equal to 0.1 nm and less than or equal to 5 nm.9. The cubic boron nitride sintered material according to claim 7 , wherein a maximum value M of a content of the carbon in the region in which the carbon exists is more than or equal to 0.1 atom % and less than or equal to 5.0 atom %.10. A cubic boron nitride sintered material comprising: more than or equal to 85 volume % and less than 100 volume % of cubic boron nitride grains; and a remainder of a binder claim 7 , whereinthe binder includes WC, Co and an Al compound, carbon exists on a whole or part of the interface, and', 'a width D of a region in which the carbon exists is more than or equal to 0.1 nm and less than or equal to 5 nm, ...

CERAMIC-METALLIC COMPOSITES WITH IMPROVED PROPERTIES AND THEIR METHODS OF MANUFACTURE

Ceramic-metallic composites are disclosed along with the processes for their manufacture. The present invention improves high temperature strength of AlO—Al composites by displacing aluminum in the finished product with other substances that enhance the high temperature strength. Each process commences with a preform initially composed of at least 5% by weight silicon dioxide, and the finished product includes AlO, aluminum and another substance. 1. In a process for making a ceramic-metallic composite employing a displacement reaction in a molten metal bath , wherein the ceramic-metallic composite has the general formula AlO—SiC—Al , the improvement comprising conducting a process in which a ceramic-metallic composite including AlO—SiC—Al is formed with reduced concentration of free aluminum to enhance high temperature strength , including the steps of:{'sub': '2', 'a) providing a preform initially composed of from 5% to 60% by weight silicon dioxide (SiO) and 40% to 95% by weight Silicon Carbide (SiC);'}b) providing a molten metal bath composed of molten aluminum and 32% to 60% by weight of at least one additional molten substance, said at least one additional molten substance being within said bath either initially or via a subsequent displacement reaction of an oxide incorporated into said preform;c) immersing said preform in said bath for a sufficient time period to complete said displacement reaction between said preform and said bath;d) removing said preform from said bath;{'sub': 2', '3', '2', '3, 'e) said preform when removed from said bath comprising a ceramic-metallic composite finished product consisting of AlOas well as Silicon Carbide (SiC), free aluminum and a fourth substance, concentration of free aluminum in said finished product being reduced as compared to concentration of aluminum had said bath not included said additional molten substance, whereby said finished product exhibits enhanced high temperature strength as compared to high temperature ...

CUBIC BORON NITRIDE SINTERED BODY AND COATED CUBIC BORON NITRIDE SINTERED BODY

A CBN sintered body contains CBN, a binder phase and inevitable impurities. An amount of CBN by volume is between 50%-80%. A total amount of binder phase and inevitable impurities by volume is between 20%-50%. The binder phase contains an Al compound and a Ti compound. The Al compound contains Al and one or more of N, O and B. The Ti compound contains Ti and one or more of C, N and B. When an X-ray diffraction intensity at a (100) plane of the AlN is Iand an X-ray diffraction intensity at a (104) plane of the AlOis I, I/Iis between 6 and 40. When a total area of the cubic boron nitride and the Al compound is S1, and an area of a region at which the CBN and the Al compound are continuously contacted is S2, S2/S1 is between 0.98 and 1.00. 18-. (canceled)9. A cubic boron nitride sintered body comprising:cubic boron nitride, a binder phase and inevitable impurities,an amount of the cubic boron nitride is 50% by volume or more and 80% by volume or less,a total amount of the binder phase and the inevitable impurities is 20% by volume or more and 50% by volume or less,the binder phase contains an Al compound and a Ti compound,the Al compound contains an Al element and at least one element selected from the group consisting of N, O and B,the Ti compound contains a Ti element and at least one element selected from the group consisting of C, N and B,{'sub': 2', '3, 'the Al compound contains AlN and AlO,'}{'sub': 1', '2', '3', '2', '1', '2, 'when an X-ray diffraction intensity at a (100) plane of the AlN is given by I, and an X-ray diffraction intensity at a (104) plane of the AlOis given by I, then I/Iis 6 or more and 40 or less, and'}when a total area of the cubic boron nitride and the Al compound is given by 51, and an area of a region at which the cubic boron nitride and the Al compound are continuously contacted is given by S2, then S2/S1 is 0.98 or more and 1.00 or less.10. The cubic boron nitride sintered body according to claim 9 , wherein:{'sub': '2', 'the Ti compound ...

Cutting Tool and Method for Manufacturing Same

A cutting tool includes a substrate and a coating film provided on the substrate, wherein the substrate is a cBN sintered material including more than or equal to 30 volume % and less than 80 volume % of cBN and a binder, the coating film includes a compound layer constituted of a composition of TiAlCN, where 0.70≤X≤0.95 and 0 Подробнее

MAGNESIA CARBON BRICK AND PRODUCTION METHOD THEREFOR

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

Method of Producing a Body Comprising Porous Alpha Silicon Carbide and the Body Produced by the Method

The present invention relates to a method of producing porous alpha-SiC containing shaped body and porous alpha-SiC containing shaped body produced by that method. The porous alpha-SiC containing shaped body shows a characteristic microstructure providing a high degree of mechanical stability. 125.-. (canceled)26. A method of producing a porous silicon carbide product , said method comprising:preparing a mixture comprising silicon, carbon, at least one silicide forming and carbide forming agent and at least one alloy forming agent; wherein said at least one silicide forming and carbide forming agent comprises a group 13 element, or a group 12 element, or a group 2 element; wherein said at least one alloy forming agent comprises Cu;producing a monolith structure by processing said mixture;applying heating to said monolithic structure, wherein said applying heating comprises performing pyrolysis of said produced monolithic structure in a controlled atmosphere at a temperature between 700 and 1000° C. for a period between 1 and 24 h;and wherein said at least one alloy forming agent is, after performing said pyrolysis, in a concentration between 0.1 and 0.9 at. %, such as 0.5 at. %.27. The method according to claim 26 , wherein said group 13 element is Al.28. The method according to claim 26 , wherein said group 12 element is Zn.29. The method according to claim 26 , wherein said group 2 element is Mg.30. The method according to claim 26 , wherein said at least one alloy forming agent is an alloy forming agent supporting oxidation of silicon carbide.31. The method according to claim 26 , wherein said applying heating further comprises:applying to said produced monolithic structure at least three temperature treatments wherein the temperature is varied between room temperature and 2100° C., said room temperature being about 20 to 26° Celsius with an average of 23° C., wherein said at least three temperature treatments comprise:a first temperature treatment between 850 ...

Composite sintered body for cutting tool and cutting tool using the same

Disclosed are a composite sintered body for a cutting tool and a cutting tool using the same. The composite sintered body for a cutting tool has enhanced heat conductivity and electrical conductivity to be strong against abrasion by heat and impact and to be capable of minimizing an influence on an edge during an Electrical Discharge Machine (EDM) operation.

Refractory product, batch for producing the product, method for producing the product, and use of the product

The invention relates to a refractory product, a batch for producing the product, a method for producing the product, and a use of the refractory product.

CUBIC BORON NITRIDE SINTERED MATERIAL

A cubic boron nitride sintered material includes: more than 80 volume % and less than 100 volume % of cubic boron nitride grains; and more than 0 volume % and less than 20 volume % of a binder phase. The binder phase includes: at least one selected from a group consisting of a simple substance, an alloy, and an intermetallic compound selected from a group consisting of a group 4 element, a group 5 element, a group 6 element in a periodic table, aluminum, silicon, cobalt, and nickel. A dislocation density of the cubic boron nitride grains is more than or equal to 3×10/mand less than or equal to 1×10/m. 1. A cubic boron nitride sintered material comprising:more than 80 volume % and less than 100 volume % of cubic boron nitride grains; andmore than 0 volume % and less than 20 volume % of a binder phase, wherein the binder phase includesat least one selected from a group consisting of a simple substance, an alloy, and an intermetallic compound selected from a group consisting of a group 4 element, a group 5 element, a group 6 element in a periodic table, aluminum, silicon, cobalt, and nickel,at least one selected from a group consisting of a compound composed of at least one element selected from the group consisting of the group 4 element, the group 5 element, the group 6 element in the periodic table, aluminum, silicon, cobalt, and nickel, and at least one element selected from a group consisting of nitrogen, carbon, boron, and oxygen, and a solid solution originated from the compound, orthe at least one selected from the group consisting of the simple substance, the alloy, and the intermetallic compound selected from the group consisting of the group 4 element, the group 5 element, the group 6 element in the periodic table, aluminum, silicon, cobalt, and nickel, and the at least one selected from the group consisting of the compound composed of the at least one element selected from the group consisting of the group 4 element, the group 5 element, the group 6 element ...

CERAMIC FOAM FILTER AND MANUFACTURING METHOD THEREOF

A ceramic foam filter and a manufacturing method thereof. The ceramic foam filter comprises the following materials provided in respective weight percentages: 20-50% of a silicon carbide, 20-55% of a zirconium oxide, and 10-36% of a silicon oxide, wherein all figures are based on the total weight of the ceramic foam filter. The method for manufacturing the ceramic foam filter comprises the following steps: (a) providing a slurry comprising a silicon carbide, a zirconium oxide or zirconium oxide precursor, a silicon oxide or silicon oxide precursor, a binder, an optional additive, and a fluid carrier medium; (b) applying the slurry to perform surface ornamentation of a perforated organic foam; (c) drying the perforated organic foam surface ornamented with the slurry to obtain a green body; and (d) sintering the green body in oxygen-containing air to obtain the ceramic foam filter. 110-. (canceled)11. A ceramic foam filter , wherein the ceramic foam filter comprises the following materials provided in respective weight percentages:20-50% of silicon carbide, 20-55% of zirconium oxide, and 10-36% of silicon oxide, wherein all figures are based on the total weight of the ceramic foam filter.12. The ceramic foam filter according to claim 11 , wherein the ceramic foam filter has a porosity of 78%-90% as measured according to the national standard GB/T25139-2010.13. The ceramic foam filter according to claim 11 , wherein the sum of the weight percentages of silicon carbide claim 11 , zirconium oxide and silicon oxide is 90% or more based on the total weight of the ceramic foam filter.14. The ceramic foam filter according to claim 11 , wherein the ceramic foam filter is made by sintering a slurry comprising silicon carbide claim 11 , zirconium oxide or zirconium oxide precursor claim 11 , silicon oxide or silicon oxide precursor claim 11 , a binder claim 11 , an optional admixture claim 11 , and a liquid carrier.15. The ceramic foam filter according to claim 14 , wherein the ...

Heat-dissipating ceramic foam containing carbonized cellulose particles and method for producing the same

The present disclosure provides a method for producing a heat-dissipating ceramic foam containing carbonized cellulose particles, the method including: mixing particles of carbonized cellulose or carbonized cellulose-containing substance, ceramic powders, silicate, and water to form slurry; adding a foaming agent to the slurry to form foamed slurry; and drying the foamed slurry.

SINTERED MATERIAL, TOOL INCLUDING SINTERED MATERIAL, AND SINTERED MATERIAL PRODUCTION METHOD

To provide a sintered material having excellent oxidation resistance, as well as excellent abrasion resistance and chipping resistance. A sintered material containing a first compound formed of Ti, Al, Si, O, and N is provided. 15.-. (canceled)6. A method for producing a sintered material , comprising the steps of:preparing first grains containing elements Ti, Al, and Si;treating said first grains to make second grains formed of elements Ti, Al, Si, O, and N; andsintering said second grains to make a sintered material containing a first compound formed of Ti, Al, Si, O, and N, whereinthe step of making said second grains includes a step of heating said first grains, and a step of rapidly cooling said first grains after heating.7. The method for producing a sintered material according to claim 6 , further comprising a step of:mixing said second grains with third grains before the step of making said sintered material, whereinsaid third grains are grains formed of at least one selected from the group consisting of a fifth compound, a sixth compound, a seventh compound and a second metal,said fifth compound is cubic boron nitride,said sixth compound is a compound of at least one element selected from Al and Si, and at least one element selected from the group consisting of B, C, N, and O,said seventh compound is a compound of at least one element selected from the group consisting of elements in Group 4, elements in Group 5, and elements in Group 6 of the periodic table, and at least one element selected from the group consisting of B, C, N, and O, andsaid second metal is a metal formed of at least one selected from the group consisting of Ti, V, Cr, Mn, Co, Ni, Cu, Al, Sn, Si, Zr, Nb, Mo, Ag, Hf, Ta, W, and Pb.8. The method for producing a sintered material according to claim 7 , wherein said mixing step is executed in such a manner that a content of said third grains in mixed grains of said second grains and said third grains is less than or equal to 90% by volume. ...

Insertion of elements within boron carbide

A method and resulting composition made by: providing boron carbide and a dopant selected from silicon, aluminum, magnesium, and beryllium; and ball milling the boron carbide with the dopant until at least one out of fifteen of the boron and/or carbon atoms of the boron carbide are substituted with the dopant.

DRILLING TOOLS HAVING MATRICES WITH CARBIDE-FORMING ALLOYS, AND METHODS OF MAKING AND USING SAME

Drilling tools, such as drill bits, having a shank, a crown, and a plurality of abrasive cutting elements. In the case of impregnated drilling tools, the abrasive cutting elements are dispersed throughout at least a portion of the crown. In the case of surface-set drilling tools, the abrasive cutting media is secured to and projects from a cutting face of the crown. The matrix of the crown of the drilling tools includes a carbide-forming alloy that forms a direct carbide bond with at least one cutting element of the plurality of abrasive cutting elements. 1. A drilling tool , comprising:a shank having a first end and an opposing second end, the first end being adapted to be secured to a drill string component;a crown extending from the second end of the shank, the crown comprising a matrix of hard particulate material and a carbide-forming alloy, a binder, a cutting face, and a crown body between the cutting face and the shank, wherein the hard particulate material is a powdered material that comprises one or more of carbide, tungsten, iron, cobalt, and/or molybdenum and carbides, borides, or alloys thereof, and wherein the carbide-forming alloy is provided as a powder; anda plurality of abrasive cutting elements secured at least partially within the matrix of the crown, wherein the plurality of abrasive cutting elements comprise a plurality of uncoated diamond cutting elements,wherein the carbide-forming alloy of the matrix forms an intermediate metallic layer that directly bonds with the binder and the hard particulate material of the matrix, and wherein the carbide-forming alloy of the matrix forms a direct carbide bond with at least one uncoated diamond cutting element of the plurality of uncoated diamond cutting elements, wherein the drilling tool does not include oxide layers between said at least one uncoated diamond cutting element and the carbide-forming alloy of the matrix,wherein the carbide-forming alloy of the matrix is configured to convert portions of ...

ALLOY TURBINE COMPONENT COMPRISING A MAX PHASE

A turbine component such as a turbine blade or a vane of a distributor, which includes a polycrystalline substrate containing grains, the substrate having at least one TiAlCphase and the mass fraction of the phase of the alloy is greater than 97%, with the average length of the grains is less than 50 μm, the average width-to-length ratio is between 0.4 and 0.6, and the average mesh volume of the TiAlCphase is less than 152.4 Å. 1. A turbine component comprising a polycrystalline substrate , the substrate comprising grains and having at least one TiAlCphase , the mass fraction of said phase of the alloy being greater than 97% , each grain having a length and a width , wherein:the average length of the grains is less than 50 μm; andthe average width-to-length ratio of the grains is between 0.4 and 0.6; and{'sub': 3', '2, 'sup': '3', 'the average cell volume of the TiAlCphase is less than 152.4 Å.'}2. The turbine component as claimed in claim 1 , wherein the substrate comprises titanium carbide claim 1 , the mass fraction of the titanium carbide of the substrate being less than 0.8%.3. The turbine component as claimed in claim 1 , wherein the substrate comprises alumina claim 1 , the mass fraction of the alumina of the substrate being less than 3%.4. The turbine component as claimed in claim 1 , wherein the substrate comprises TiAlintermetallic compounds claim 1 , the volume fraction of the TiAlcompounds of the substrate being less than 1%.5. The turbine component as claimed in claim 1 , wherein the substrate has phases comprising iron and/or tungsten claim 1 , and wherein the sum of the average volume fraction of iron and of tungsten of said phases is less than 2%.6. The turbine component as claimed in claim 1 , wherein the relative density of the TiAlCphase is greater than 96%.7. The turbine blade comprising a component as claimed in .8. The turbine stator comprising a component as claimed in .9. The turbine comprising a turbine blade and/or a turbine stator ...

Cubic boron nitride sintered material cutting tool

A cBN sintered material cutting tool includes a cutting tool body that is made of a sintered material including cubic boron nitride particles and a binder phase, in which: an average particle size of the cBN particles is 0.5 μm or less and a content ratio of the cBN particles in the sintered material is 35 vol % to 80 vol %; and the binder phase includes 1.0 vol % to 20 vol % of an Al compound, an average particle size of the Al compound present in the binder phase is 300 nm or less, and a value of a ratio (a value of SN/SO; area ratio) of a content SN of nitrogen (N) included in the Al compound to a content SO of oxygen (O) included in the Al compound is 1.1 to 5.

Cubic boron nitride-based sintered material and cutting tool made of cubic boron nitride-based sintered material

A cubic boron nitride-based sintered material includes cubic boron nitride particles of 70 to 95 vol %, in which in a structure of a cross-section of the sintered material, a binder phase with a width of 1 nm to 30 nm is present between the adjacent cubic boron nitride particles, the binder phase being made of a compound containing at least Al, B, and N and having a ratio of an oxygen content to an Al content of 0.1 or less in terms of atomic ratio.

Superhard constructions and methods of making same

A super hard polycrystalline construction has a first region comprising a body of thermally stable polycrystalline super hard material having an exposed surface forming a working surface, and a peripheral side edge, said polycrystalline super hard material comprising a plurality of intergrown grains of super hard material; a second region forming a substrate to the first region; and a third region interposed between the first and second regions. The third region extends across a surface of the second region along an interface, the interface comprising at least a portion having an uneven topology, the third region comprising a composite material having a first phase comprising a plurality of non-intergrown grains of super hard material, and a matrix material, the third region having a wear resistance at least three times less than sintered polycrystalline diamond material having the same average grain size of diamond grains as the super hard grains in the third region.

Refractory for steel casting, plate for sliding nozzle device, and method for producing refractory for steel casting

In order to suppress destruction of a refractory which contains a metal aluminum, the refractory is a refractory for steel casting which includes a refractory material containing a free carbon in the range of 1 to 10% by mass, both inclusive, a metal aluminum in the range of 1 to 15% by mass, both inclusive, and a metal oxide in a balance. The refractory for steel casting satisfies the following Equation 1: 0.31×Al≦(P−4)/D (Equation 1), with a metal aluminum content in the refractory designated by Al % by mass, an apparent porosity thereof designated by P %, and a bulk density thereof designated by D.

MAGNESIA CARBON BRICK

In the present invention, the attempt was made to increase the denseness (to lower the porosity) of a magnesia carbon brick furthermore thereby providing the magnesia carbon brick having a high durability never found in the past. The magnesia carbon brick of the present invention comprises a magnesia raw material and a graphite, wherein the magnesia carbon brick contains the graphite with the amount thereof in the range of 8% or more by mass and 25% or less by mass and the magnesia raw material with the amount thereof in the range of 75% or more by mass and 92% or less by mass, the both amounts being relative to the total amount of the magnesia raw material and the graphite; as a grain size distribution of the magnesia raw material, the magnesia raw material having particle diameter of in the range of 0.075 mm or more and 1 mm or less is blended with the amount thereof being 35% or more by mass relative to the total amount of the magnesia raw material and the graphite, and a mass ratio of the magnesia raw material having the particle diameter of in the range of 0.075 mm or more and 1 mm or less to the magnesia raw material having the particle diameter of less than 0.075 mm is 4.2 or more; and an apparent porosity thereof after firing in reducing atmosphere for 3 hours at 1400° C. is 7.8% or less. 1. A magnesia carbon brick , comprising a magnesia raw material and a graphite , whereinthe magnesia carbon brick contains the graphite with amount thereof in the range of 8% or more by mass and 25% or less by mass and the magnesia raw material with amount thereof in the range of 75% or more by mass and 92% or less by mass, the both amounts being relative to total amount of the magnesia raw material and the graphite;as a grain size distribution of the magnesia raw material, the magnesia raw material having particle diameter of in the range of 0.075 mm or more and 1 mm or less is blended with amount thereof being 35% or more by mass relative to total amount of the magnesia ...

METHOD OF PREPARING A MULTIMODAL CUBIC BORON NITRIDE POWDER

Multi-step milling processes to prepare cBN composite powder forms a first powder mixture by adding a binder and a first cBN component, mills the first powder mixture for a first time period, combines a second cBN component with the milled first powder mixture to form a second powder mixture, and mills the second powder mixture for a second time period (less than the first time period) to form the cBN composite powder. A ratio of the D50 value of the second cBN component to the D50 value of the first cBN component is at least 3.0. Two-step milling with different milling times for the two cBN component fractions controls the amount of mill debris in the cBN composite powder mixture. Further processing of the cBN composite powder under HPHT conditions forms a cBN-based ceramic with an average value of a cBN particle free diameter of less than 2.0 microns. 1. A method of preparing a cBN composite powder in a multi-step milling process with controlled milling debris production , the method comprising:forming a first powder mixture by adding one or more binder component materials and a first cBN component to milling equipment;milling the first powder mixture for a first milling time;combining a second cBN component with the milled first powder mixture to form a second powder mixture; andmilling the second powder mixture for a second milling time to form the cBN composite powder, the second milling time less than the first milling time, wherein a ratio of the D50 value of the second cBN component to the D50 value of the first cBN component is at least 3.2. The method of claim 1 , the method further comprising premilling the binder component before forming the first powder mixture.3. The method according to claim 1 , wherein the D50 value of the first cBN component is between 0.2 micron and 2.0 microns and wherein the D50 value of the second cBN component is between 1.2 micron and 6.0 microns.4. The method according to claim 1 , wherein the milled binder component ...

Superhard constructions and methods of making same

A polycrystalline super hard construction has a first region comprising a body of thermally stable polycrystalline super hard material having an exposed surface forming a working surface, and a peripheral side edge, said polycrystalline super hard material comprising a plurality of intergrown grains of super hard material; a second region forming a substrate to the first region, the second region comprising a hard phase and a binder phase; and a third region interposed between the first and second regions, the third region extending across a surface of the second region along an interface. The third region comprises a composite material having a first phase comprising a plurality of non-intergrown grains of super hard material, and a matrix material. The super hard polycrystalline construction further has a fourth region interposed between the second region and the third region, a major proportion of the fourth region comprising one or more components of the binder material of the second region, the fourth region further comprising one or more reaction products between the binder material of the second region and one or more components of the third region.

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

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

A METHOD OF FABRICATING A CERAMIC FROM A CHEMICAL REACTION

A method of fabricating a ceramic material, the method including forming a ceramic material by performing a first chemical reaction at least between a first powder of an intermetallic compound and a reactive gas phase, a liquid phase being present around the grains of the first powder during the first chemical reaction, the liquid gas phase being obtained from a second powder of a metallic compound by melting the second powder or as a result of a second chemical reaction between at least one element of the first powder and at least one metallic element of the second powder, a working temperature being imposed during the formation of the ceramic material, which temperature is low enough to avoid melting the first powder. 1. A method of fabricating a ceramic material , the method comprising{'sub': '2', 'claim-text': the second powder is a powder of nickel and the liquid phase is obtained as a result of a second chemical reaction between at least one element of the first powder and the nickel of the second powder; or', 'the second powder is a powder of an alloy of aluminum and of silicon AlSi13 comprising substantially 13% by weight silicon and the liquid phase is obtained by melting by said alloy of aluminum and of silicon., 'forming a ceramic material by performing a first chemical reaction at least between a first powder of a metallic disilicide MSiwhere M is a transition metal and a reactive gas phase, the first chemical reaction being a nitriding reaction and the reactive gas phase comprising the element N or the first chemical reaction being a carburizing reaction and the reactive gas phase comprising the element C, a liquid phase obtained from a second powder being present around the grains of the first powder during the first chemical reaction, a working temperature being imposed during the formation of the ceramic material, which temperature is low enough to avoid melting the first powder, and one of the two following characteristics being true2. A method ...

Cutting elements, and related earth-boring tools, supporting substrates, and methods

A cutting element comprises a supporting substrate, and a cutting table attached to an end of the supporting substrate. The cutting table comprises inter-bonded diamond particles, and a thermally stable material within interstitial spaces between the inter-bonded diamond particles. The thermally stable material comprises a carbide precipitate having the general chemical formula, A 3 XZ n-1 , where A comprises one or more of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ac, Th, Pa, and U; X comprises one or more of Al, Ga, Sn, Be, Bi, Te, Sb, Se, As, Ge, Si, B, and P; Z comprises C; and n is greater than or equal to 0 and less than or equal to 0.75. A method of forming a cutting element, an earth-boring tool, a supporting substrate, and a method of forming a supporting substrate are also described.

A COMPOSITE MATERIAL PART INCLUDING AN INTERPHASE LAYER OF ALUMINUM-DOPED BORON NITRIDE

A composite material part includes fiber reinforcement made of carbon or ceramic yarns and a matrix that is mostly ceramic, the part further including a first interphase layer covering the yarns and present between the yarns and the matrix, the first interphase layer being a layer of boron nitride doped with aluminum and presenting an atom content of aluminum lying in the range 5% to 15%. 1. A composite material part comprising fiber reinforcement made of carbon or ceramic yarns and a matrix that is mostly ceramic , the part further comprising a first interphase layer covering the yarns and present between the yarns and the matrix , said first interphase layer being a layer of boron nitride doped with aluminum and presenting an atom content of aluminum lying in the range 5% to 15%.2. A part according to claim 1 , wherein the first interphase layer presents an atom content of aluminum lying in the range 5% to 12%.3. A part according to claim 2 , wherein the first interphase layer presents an atom content of aluminum lying in the range 7% to 12%.4. A part according to claim 1 , wherein the first interphase layer is in contact with the yarns.5. A part according to claim 1 , wherein the part further comprises a second interphase layer of boron nitride situated between the yarns and the first interphase layer.6. A part according to claim 5 , wherein the first interphase layer is in contact with the second interphase layer.7. A part according to claim 1 , wherein the part includes a layer comprising silicon in contact with the first interphase layer.8. A part according to claim 7 , wherein the layer including silicon is present between the yarns and the first interphase layer.9. A method of fabricating a part according to claim 1 , the method comprising:forming the first interphase layer on the yarns;making a fiber preform forming the fiber reinforcement of the part that is to be obtained out of the yarns by performing one or more textile operations; andforming a matrix ...

SURFACE EFFECT POLYMER DERIVED CERAMICS, METHODS, MATERIALS AND USES

A polysilocarb effect pigments, uncoated and coated, that exhibit among other things optical properties such as interference, shine, shimmer and sparkle. Pastes and coating including these polysilocarb effect pigments. Polysilocarb pigments having magnetite and exhibiting magnetic properties. 1. A polysicocarb ceramic effects pigment , the pigment comprising:a. an effect layer, a polysilocarb derived ceramic base and an optical interface between the effect layer and the polysilocarb derived ceramic base;b. the effect layer defining a thickness, a reflective effect, and a refractive effect, wherein the reflective effect and refractive effect are different;c. the polysilocarb derived ceramic base consisting essentially of carbon, oxygen and silicon;d. the polysicocarb derived ceramic base defining a thickness, an absorption coefficient, and a percentage light absorption;e. wherein the refractive effect interacts across the optical interface with the polysilocarb base to define a secondary reflective effect.2. The pigment of claim 1 , wherein the secondary reflective effect is predetermined and controlled based in part upon the carbon content of the base.3. The pigment of claim 1 , wherein the absorption coefficient of the base is from about 1 claim 1 ,000 to about 20 claim 1 ,000 1/cm.4. (canceled)5. The pigment of claim 1 , wherein the thickness of the base is from about 0.2 μm to about 2 μm.6. The pigment of claim 1 , wherein the thickness of the base is from about 0.5 μm to about 2.5 μm.7. (canceled)8. The pigment of claim 1 , wherein the base has a percentage light absorption from about 40% to about 100%.9. (canceled)10. The pigment of claim 1 , wherein the base has a percentage light absorption from about 60% to about 80%.11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. The pigment of claim 1 , wherein the effect layer is integral with the base.21. The pigment of claim 1 , wherein ...

Dielectric Ceramic Composition and Multilayer Ceramic Capacitor Comprising the Same

A dielectric ceramic composition and a multilayer ceramic capacitor including the same are provided. The dielectric ceramic composition includes a BaTiO-based base material main ingredient and an accessory ingredient, where the accessory ingredient includes dysprosium (Dy) and niobium (Nb) as first accessory ingredients. A total content of the Dy and Nb is less than or equal to 1.5 mol, based on 100 mol of Ti of the base material main ingredient, and a content of the Dy satisfies 0.7 mol Подробнее

High capacity, long cycle life battery anode materials, compositions and methods

Polymer derived ceramic (PDC) materials, compositions and methods of making high capacity, long cycle, long life battery anodes to improve the performance of batteries of all types, including but not limited to coin cell batteries, electric vehicle (EV) batteries, hybrid electric vehicle (HEV) batteries, plug-in hybrid electric vehicle (PHEV) batteries, battery electric vehicle (BEV) batteries, lithium cobalt (LCO) batteries, lithium iron (LFP) batteries; and lithium-ion (Li) batteries, and lead acid batteries. Silicon is incorporated in the PDC material at a molecular level when reacting a polymer derived ceramic precursor and a silicon hydride constituent or a silicon alkoxide constituent to form a PDC composition useful as a battery anode material. The resulting battery anode materials increase the specific capacity of a battery measured in milliampere-hours per gram (mAh/g) and increase the life cycle of a battery while minimizing distortion and stress of the anode structure.

Carbide and oxide ceramics and process for their preparation

Die Erfindung betrifft eine karbidische und oxidische Keramik in einer bestimmten, zuvor in einer Papierstruktur abgebildeten Form. Erfindungsgemäß besteht ein inneres Skelett aus einem Metallkarbid, wie beispielsweise Siliciumkarbid (SiC), und eine äußere Schicht aus Oxidkeramik. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung einer derartigen Keramik. The invention relates to a carbide and oxide ceramic in a certain, previously imaged in a paper structure form. According to the invention, an inner skeleton consists of a metal carbide, such as silicon carbide (SiC), and an outer layer of oxide ceramics. The invention further relates to a method for producing such a ceramic.

Self-grown monopoly compact grit

A self-grown monopoly compact grit and high pressure, high temperature process for preparing the same. The high pressure, high temperature sintered/synthesized monopoly compact grit is used in various industrial tools such as saw blades, grinding wheels, cutting tools and drill bits. Further, the monopoly compact grit of the present invention is produced from a seed of a mono-crystal of diamond or cubic boron nitride surrounded by either a self-grown crystal layer or an integrally bonded poly-crystalline sintered compact layer. The self-grown crystal layer is a new grown crystal structure where the seed crystal grows into a new phase through a normal diamond or cubic boron nitride synthesis process in the presence of a catalyst metal solvent. The compact layer is composed of about 50 to about 90 volume percent of diamond or cubic boron nitride, a typical binder material, which is a catalyst for crystal-to-crystal bonding, and a cementing agent which is a binding agent capable of forming stable carbide and nitride bonds.

Abrasive particles, abrasive articles, and methods of making and using the same

Abrasive particles, and methods of making and using the same

FADE AND COATED GRAINS

Methods for producing metal carbide materials

Methods of producing silicon carbide, and other metal carbide materials. The method comprises reacting a carbon material (e.g., fibers, or nanoparticles, such as powder, platelet, foam, nanofiber, nanorod, nanotube, whisker, graphene (e.g., graphite), fullerene, or hydrocarbon) and a metal or metal oxide source material (e.g., in gaseous form) in a reaction chamber at an elevated temperature ranging up to approximately 2400° C. or more, depending on the particular metal or metal oxide, and the desired metal carbide being produced. A partial pressure of oxygen in the reaction chamber is maintained at less than approximately 1.01×10 2 Pascal, and overall pressure is maintained at approximately 1 atm.

Metal carbide fibers and methods for their manufacture

A method of producing, from a continuous or discontinuous (e.g., chopped) carbon fiber, partially to fully converted metal carbide fibers. The method comprises reacting a carbon fiber material with at least one of a metal or metal oxide source material at a temperature greater than a melting temperature of the metal or metal oxide source material (e.g., where practical, at a temperature greater than the vaporization temperature of the metal or metal oxide source material). Additional methods, various forms of carbon fiber, metal carbide fibers, and articles including the metal carbide fibers are also disclosed.

立方晶型窒化硼素焼結体

　優れた耐欠損性と耐摩耗性を兼ね備えた立方晶型窒化硼素焼結体を提供する。 　第一の発明による立方晶型窒化硼素焼結体は、立方晶窒化硼素（cBN）粒子と前記cBN粒子を結合するための結合材とを含む立方晶型窒化硼素焼結体である。この焼結体は、70体積%以上98体積%以下のcBN粒子と、残部結合材がCo化合物、Al化合物、WCおよびこれらの固溶体からなる。そして、焼結体中のcBN粒子がMgを0.03重量%以下、かつLiを0.001重量%以上0.05重量%以下含有する。 　第二の発明による立方晶型窒化硼素焼結体は、第一の発明の結合材をAl化合物に変えた構成としたものである。

Super-hard structure, tool element and method of making same

研磨粒子およびその製造方法ならびに使用方法

Method of producing alumina structural ceramic

FIELD: ceramic industry. SUBSTANCE: invention relates to structural technology of porous ceramic materials and can be used as a heat-resistant insulating kiln furniture. From an aluminium alloy such as duralumin remove chips, consisting of fragments of an area of 160-200 mm 2 and a thickness of 0.1-0.2 mm. Chips are treated with aqueous sodium hydroxide solution with concentration of 7-25 % at heat sink from reaction volume coolant is recovered from a mother solution formed precipitate by vacuum filtration and washing precipitate tap water by multiple decantation to pH 8.5-9.2. Precipitate is dried on air at temperature 50-100 °C, then heat treated in air at temperature of 1,250-1,350 °C with holding for 1-2 hours. Milled product is added with 7-10 % aqueous solution of polyvinyl alcohol, taken in amount of 5-10 wt% in terms of dry residue substance and workpieces are pressed under pressure of 50-200 MPa, after which obtained material is sintered in air at 1,400-1,430 °C for 1-2 hours. EFFECT: technical result of invention is increase in thermal stability of material in terms of multiple consecutive heating series while maintaining a sufficiently high strength. 1 cl, 1 tbl, 5 dwg, 3 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 581 183 C1 (51) МПК C04B 35/111 (2006.01) C04B 35/626 (2006.01) C01F 7/42 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014150907/03, 16.12.2014 (24) Дата начала отсчета срока действия патента: 16.12.2014 (45) Опубликовано: 20.04.2016 Бюл. № 11 2 5 8 1 1 8 3 R U (54) СПОСОБ ПОЛУЧЕНИЯ АЛЮМООКСИДНОЙ КОНСТРУКЦИОННОЙ КЕРАМИКИ (57) Реферат: Изобретение относится к технологии пористых маточного раствора образовавшегося осадка конструкционных керамических материалов и методом вакуумной фильтрации и промывку может быть использовано в качестве осадка водопроводной водой методом теплоизоляционного термостойкого огнеприпаса. множественной декантации до величины рН 8,5Технический ...

纳米尺寸陶瓷材料、其合成工艺以及应用

本发明涉及多种晶体结构形式的纳米尺寸陶瓷材料，复合材料或固溶体，其合成方法以及应用。这些材料主要通过两种油包水(W/O)乳液的爆炸而获得，两种乳液之一由前体制备，以提供温度低于2000℃的爆炸体系，其各个晶粒表现出高的化学和晶相均一性，和一系列根据最终应用可调节的附加性质，例如一次颗粒的均匀分布，非常高的化学纯度水平，小于50nm的微晶尺寸，每质量单位25-500m 2 /g的表面积，和高于98％理论密度的真实晶粒密度。这些性质使这种材料尤其适合于大范围应用在纳米技术领域，例如纳米涂层、磁性纳米流体、纳米催化剂、纳米感应器、纳米颜料、纳米添加剂、超轻纳米复合材料、药物释放纳米颗粒、纳米标记、纳米薄膜等。

Ceramic Materials, Abrasive Particles, Abrasive Articles, and Methods of Making and Using the Same

본 발명은 무정질 물질, 유리-세라믹 및 이들의 제조 방법을 제공한다. 본 발명의 몇가지 실시양태는 연마 입자를 포함한다. 연마 입자는 접착된 연마재, 피복된 연마재, 부직 연마재 및 연마 브러쉬 등을 비롯한 각종 연마 용품에 도입될 수 있다. The present invention provides amorphous materials, glass-ceramics and methods for their preparation. Some embodiments of the present invention comprise abrasive particles. Abrasive particles can be incorporated into various abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, abrasive brushes, and the like. 무정질 물질, 유리-세라믹, 연마 입자, 연마재 Amorphous Materials, Glass-Ceramic, Abrasive Particles, Abrasives

一种城镇生活垃圾处理工艺

本发明公开一种城镇生活垃圾处理工艺。其包括垃圾的预处理，将垃圾干燥后，采用磁选和静电分选，将金属和塑料进行回收，再放入热解炉中进行热解，将垃圾热解成甲烷、氢气、一氧化碳等气体以及其他大分子气体，这些气体经过吸附装置吸附之后进入气化炉内进行氧化分解，再经过尾气处理后外排，得到的炉渣经过浸出后，混合黄土和添加剂，再经过热压成型得到地砖。本发明的一种城镇生活垃圾处理工艺，能够实现生活垃圾的全利用，减少废弃物的排放，工艺简单，避免了二噁英的产生。

磨粒及其制造和使用方法

本发明涉及包含陶瓷(包括玻璃、结晶陶瓷，以及玻璃陶瓷)的磨粒。还涉及它的制造方法。此磨粒可用于各种各样磨具，包括粘接型磨具、涂覆型磨具、非织造型磨具以及研磨刷。

碳材料、其制备方法和用途

一种包括具有石墨结构的碳颗粒和纤维状碳的碳材料，所述颗粒具有沉积到其至少一部分表面上的含碳材料。在碳材料中，含碳材料通过对含有聚合物的组合物进行热处理来得到。优选将纤维状碳通过含碳材料沉积到碳颗粒上，所述含碳材料是通过对含有聚合物的组合物进行热处理来得到的。结果，将碳材料用作二次电池的负极活性材料时，可以改善电导率并且可以改善大电流负荷的耐用特性与循环特性。通过将含碳材料涂层到具有石墨结构的碳颗粒上，可以防止基于基于碳酸亚乙酯的电解质溶液对石墨结构的损坏。

一种高耐热高强度的氧化铝纤维的制备方法

本发明公开了一种高耐热高强度的氧化铝纤维的制备方法，其制备步骤依次如下：1)氧化铝溶胶制备；将金属铝和铝盐的水溶液反应，回流，金属铝溶解完全，然后过滤，得到氧化铝溶胶；备用；2)二氧化硅溶胶的制备；3)将氧化铝溶胶和二氧化硅溶胶混合，并添加聚乙二醇和硬脂酸；调节PH值到6.5～6.8；4)将步骤3)得到的溶液进行浓缩，干法纺丝，得凝胶纤维，然后将凝胶纤维热解是在氦气氛中升温至1000～1300℃，除杂，即获得陶瓷纤维毛坏，然后进行1500～1600℃温度下进行烧结即得成品。本发明氧化铝纤维通过与本发明中的其他组合物相互作用，克服了氧化铝纤维中常出现的断丝率高，成品性能难以保证的技术问题。

一种高韧性耐磨瓷器及其制作工艺

本发明共开了一种高韧性耐磨瓷器及其工艺制备，所述高韧性耐磨瓷器采用的坯体原料为：钾长石20～30份、白土20～30份、石英20～25份、紫金土18～25份、大同土15～25份、紫木节15～20份、二氧化锆10～15份、铝粉5～10份；采用外釉原料为：黄长石20～30份、紫金土15～25份、方解石15～25份、钾长石20～28份、钠长石10～17份、石英10～15份、二氧化锆3～8份；采用内釉原料为：石英30～40份、熟石灰25～35份、白土15～25份、紫金土10～20份、高龄土10～18份、滑石粉10～15份，本发明中的各原料组分间相互协同，增强了瓷器层间结合力，缓和裂纹延伸，本发明制得的瓷器，具有良好的强度和耐摔性，提高了瓷器的韧性，改善了瓷器耐磨性能，延长了瓷器使用寿命。

Материалы на основе al2o3, оксидов редкоземельных элементов, zro2 и (или) hfo2 и способы их получения и применения

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2004 103 084 (13) A C 03 C 3/12 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2004103084/03, 02.08.2002 (71) Çà âèòåëü(è): 3Ì Èííîâåéòèâ Ïðîïåðòèç Êîìïàíè (US) (30) Ïðèîðèòåò: 02.08.2001 US 09/922,527 (72) Àâòîð(û): ÐÎÇÅÍÔËÀÍÖ Àíàòîëèé Ç. (US) (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 02.03.2004 (74) Ïàòåíòíûé ïîâåðåííûé: Áåçðóêîâà Îëüãà Ìèõàéëîâíà (86) Çà âêà PCT: US 02/24457 (02.08.2002) Àäðåñ äë ïåðåïèñêè: 115054, Ìîñêâà, Ïàâåëåöêà ïë., 2, ñòð.2, Ñêâàéð, Ñàíäåðñ àíä Äåìïñè (Ìîñêâà) ËËÑ, ïàò.ïîâ. Î.Ì.Áåçðóêîâîé (54) ÌÀÒÅÐÈÀËÛ ÍÀ ÎÑÍÎÂÅ AL2O3, ÎÊÑÈÄΠÐÅÄÊÎÇÅÌÅËÜÍÛÕ ÝËÅÌÅÍÒÎÂ, ZRO2 È R U Ôîðìóëà èçîáðåòåíè 1. Ñòåêëî, ñîäåðæàùåå Al2Î3, îêñèä ðåäêîçåìåëüíîãî ýëåìåíòà (REO) è ïî ìåíüøåé ìåðå îäèí èç îêñèäîâ ZrO2 èëè HfO2, ïðè÷åì ïî ìåíüøåé ìåðå 85 ìàñ.% ñòåêëà ïðèõîä òñ íà ñîâîêóïíóþ äîëþ Al2Î3, REO è ïî ìåíüøåé ìåðå îäíîãî èç îêñèäîâ ZrO2 èëè HfO2 è ñòåêëî ñîäåðæèò ïî ìåíüøåé ìåðå 30 ìàñ.% Al2Î3, ïî ìåíüøåé ìåðå 20 ìàñ.% REO è 15-30 ìàñ.% ZrO2, ïðè ýòîì ïðîöåíòíîå ñîäåðæàíèå îïðåäåë åòñ îò îáùåé ìàññû ñòåêëà. 2. Ñïîñîá ïîëó÷åíè ñòåêëà ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî ïî ìåíüøåé ìåðå 80% ìàñ. îáùåé ìàññû ñòåêëà ïðèõîä òñ íà ñîâîêóïíóþ äîëþ Al2Î3, REO è ZrO2. 3. Êåðàìèêà, ñîäåðæàùà ñòåêëî ïî ï.1. 4. Ñïîñîá ïîëó÷åíè ñòåêëà, ñîäåðæàùåãî Al2O3, REO è ïî ìåíüøåé ìåðå îäèí èç îêñèäîâ ZrO2 èëè HfO2, ïðè÷åì ïî ìåíüøåé ìåðå 85 ìàñ.% ñòåêëà ïðèõîä òñ íà ñîâîêóïíóþ äîëþ Al2Î3, REO è ïî ìåíüøåé ìåðå îäíîãî èç îêñèäîâ ZrO2 èëè HfO2 è ñòåêëî ñîäåðæèò ïî ìåíüøåé ìåðå 30 ìàñ.% Al2Î3, ïî ìåíüøåé ìåðå 20 ìàñ.% REO è 15-30 ìàñ.% ZrO2, ïðè ýòîì ïðîöåíòíîå ñîäåðæàíèå îïðåäåë åòñ îò îáùåé ìàññû ñòåêëà, ïðåäóñìàòðèâàþùèé ñëåäóþùèå îïåðàöèè: ðàñïëàâëåíèå ñûðü äë ïîëó÷åíè ïî ìåíüøåé ìåðå îäíîãî èç ñîåäèíåíèé Al2Î3, REO è ïî ìåíüøåé ìåðå îäíîãî èç îêñèäîâ ZrO 2 èëè HfO2 äë ôîðìèðîâàíè ðàñïëàâà è îõëàæäåíèå ðàñïëàâà äë ïîëó÷åíè ñòåêëà. 5. Ñïîñîá ïîëó÷åíè êåðàìèêè, ...

直接的熱電エネルギー変換のための素子を製造する方法

可磁化磨料颗粒及其制备方法

本发明提出了一种制备可磁化磨料颗粒的方法，所述方法包括：用水玻璃润湿陶瓷颗粒的外表面以提供润湿的陶瓷颗粒。使可磁化颗粒与所述润湿的陶瓷颗粒接触，以提供涂有粉末的陶瓷颗粒。将所述涂有粉末的陶瓷颗粒加热到至少足以使所述涂有粉末的陶瓷颗粒的所述可磁化颗粒粘结至相应的所述陶瓷颗粒的温度，从而提供所述可磁化磨料颗粒。每个可磁化磨料颗粒在各自的基础上包括相应陶瓷颗粒，所述相应陶瓷颗粒具有粘结至其上的可磁化颗粒。

복합재와 그의 제조방법

研磨方法

本发明提供一种在水性悬浮液中研磨例如碳酸钙或者高岭土等无机微粒材料的方法，优选在固体含量低于50重量%时进行研磨，其中所述水性悬浮液中含有次有效量的用于无机微粒材料的分散剂。

High temperature amorphous composition based on aluminum phosphate

A composition providing thermal, corrosion, and oxidation protection at high temperatures is based on a synthetic aluminum phosphate, in which the molar content of aluminum is greater than phosphorous. The composition is annealed and is metastable at temperatures up to 1400° C.

device for forming nitride Aluminum for fire proof material

본 발명은 내화재용 질화 알루미늄 분말 제조시 출발원료를 연속하여 이동시켜 충진층을 형성하면서 발열 반응시킴과 함께 이때 질소가스 압력 및 출발원료와 반응조절제를 적절히 조절하므로서 간단한 공정으로 대량생산 가능한 질화 알루미늄을 얻는다. In the present invention, aluminum nitride powder for refractories is continuously extruded while the starting material is continuously moved to form a filling layer, and at this time, nitrogen nitride, which can be mass-produced in a simple process, by appropriately adjusting the nitrogen gas pressure, the starting material and the reaction regulator. Get 이에따른 구성은 알루미늄 분말과 반응조절제가 혼합된 분말을 질소가스 압력이 1-10㎏/㎠ 유지된 반응기에 연속으로 투입시켜 분말 충진층이 형성되게 한 후 발열체를 이용하여 발열 반응시켜서 됨을 특징으로 하는 내화재용 질화 알루미늄 분말의 제조방법에 관한 기술이다. According to the configuration, the powder mixed with aluminum powder and the reaction regulator is continuously introduced into a reactor in which nitrogen gas pressure is maintained at 1-10 kg / ㎠ to form a powder filling layer, and then exothermic reaction is performed using a heating element. It is a technique regarding the manufacturing method of the aluminum nitride powder for fireproof materials.

含有磷酸铝组合物的材料以及磷酸铝组合物

在高温下提供热保护、抗腐蚀性和抗氧化性的组合物是基于合成的磷酸铝，其中铝的摩尔含量大于磷。所述组合物经热处理，在一直到1400℃的温度下是亚稳定的。

Материалы на основе оксида алюминия, оксида иттрия, оксида циркония/оксида гафния и способы их изготовления и использования

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2004 101 636 (13) A C 03 C 3/12, 10/00 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2004101636/03, 02.08.2002 (71) Çà âèòåëü(è): 3Ì Èííîâåéòèâ Ïðîïåðòèç Êîìïàíè (US) (30) Ïðèîðèòåò: 02.08.2001 US 09/922,530 (72) Àâòîð(û): ÐÎÇÅÍÔËÀÍÖ Àíàòîëèé Ç. (US) (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 02.03.2004 (74) Ïàòåíòíûé ïîâåðåííûé: Áåçðóêîâà Îëüãà Ìèõàéëîâíà (86) Çà âêà PCT: US 02/24658 (02.08.2002) Àäðåñ äë ïåðåïèñêè: 115054, Ìîñêâà, Ïàâåëåöêà ïë., 2, ñòð.2, Ñêâàéð, Ñàíäåðñ àíä Äåìïñè (Ìîñêâà) ËËÑ, ïàò.ïîâ. Î.Ì.Áåçðóêîâîé (54) ÌÀÒÅÐÈÀËÛ ÍÀ ÎÑÍÎÂÅ ÎÊÑÈÄÀ ÀËÞÌÈÍÈß, ÎÊÑÈÄÀ ÈÒÒÐÈß, ÎÊÑÈÄÀ R U Ôîðìóëà èçîáðåòåíè 1. Ñòåêëî, ñîäåðæàùåå Al2O3, Y2Î3 è êàê ìèíèìóì îäèí èç îêñèäîâ ZrO2 èëè HfO2, â êîòîðîì ïî ìåíüøåé ìåðå 80% îò ìàññû ñòåêëà ñîñòàâë þò â ñóììå Al2O3, Y2Î3 è êàê ìèíèìóì îäèí èç îêñèäîâ ZrO2 èëè HfO2, à ñîäåðæàíèå Al2Î3 â ñòåêëå ñîñòàâë åò êàê ìèíèìóì 30 ìàñ.%, ñîäåðæàíèå Y2Î3 ñîñòàâë åò êàê ìèíèìóì 20 ìàñ.% è ñîäåðæàíèå ZrO 2 íàõîäèòñ â äèàïàçîíå îò 15,43 äî 30 ìàñ.% îò îáùåé ìàññû ñòåêëà. 2. Ñòåêëî ïî ï.1, îòëè÷àþùååñ òåì, ÷òî ïî ìåíüøåé ìåðå 80% îò ìàññû ñòåêëà ñîñòàâë þò â ñóììå Al2Î3, Y2O3 è ZrO2. 3. Êåðàìèêà, ñîäåðæàùà ñòåêëî ïî ï.1. 4. Ñïîñîá èçãîòîâëåíè ñòåêëà, ñîäåðæàùåãî Al2Î3, Y2Î3 è êàê ìèíèìóì îäèí èç îêñèäîâ ZrO2 èëè HfO2, ïî êîòîðîìó ïî ìåíüøåé ìåðå 80% îò ìàññû ñòåêëà - ýòî ñóììà Al 2O3, Y2Î3 è êàê ìèíèìóì îäíîãî èç îêñèäîâ ZrO2 èëè HfO2, à ñîäåðæàíèå Al2Î3 â ñòåêëå ñîñòàâë åò êàê ìèíèìóì 30 ìàñ.%, ñîäåðæàíèå Y2Î3 ñîñòàâë åò êàê ìèíèìóì 20 ìàñ.% è ñîäåðæàíèå ZrO2 íàõîäèòñ â äèàïàçîíå îò 15,43 äî 30 ìàñ.% îò îáùåé ìàññû ñòåêëà, ïðè÷åì ñïîñîá âêëþ÷àåò â ñåá : ðàñïëàâëåíèå èñòî÷íèêîâ êàê ìèíèìóì Al2Î3, Y2Î3 è êàê ìèíèìóì îäíîãî èç îêñèäîâ ZrO2 èëè HfO2 ñ ïîëó÷åíèåì ðàñïëàâà; è îõëàæäåíèå ðàñïëàâà ñ ïîëó÷åíèåì ñòåêëà. 5. Ñïîñîá èçãîòîâëåíè êåðàìèêè, ñîäåðæàùåé ñòåêëî, ñîäåðæàùåå Al2Î3, Y2Î3 è êàê ìèíèìóì îäèí èç ...

烧结多孔材料及应用该多孔材料的过滤元件

本发明公开了一种具有较强耐腐蚀性的烧结多孔材料以及应用该多孔材料的过滤元件。本申请的烧结多孔材料具有如下特征：a)它主要由Ti、Si、C三种元素组成，这三种元素的重量之和占该烧结多孔材料重量的90%以上，其中，Ti为Ti、Si、C总重量的60～75%，Si为Ti、Si、C总重量的10～20%；b)该烧结多孔材料中的C主要是以Ti 3 SiC 2 三元MAX相化合物的形式存在，且在该多孔材料中大致上均匀分布；c)它的孔隙率为30～60%，平均孔径为0.5～50μm，抗拉强度≥23MPa，厚度≤5mm的烧结多孔材料在0.05MPa的过滤压差下测得纯水的过滤通量≥1t/m 2 ·h，且在5wt%的盐酸溶液中室温浸泡48天后的失重率在1.5%以下。本发明的烧结多孔材料具有非常优异的耐腐蚀性能。

The Bottom Gas Bubbling MgO Refractory composition to Relieve Thermal Stress and the product manufacturing Method

열응력 해소를 위한 저취 마그네시아 카본질 내화물 조성물 및 그 제조 방법이 제공된다. 본 발명의 저취 마그네시아 카본질 내화물용 조성물은, 중량%로, 전융 마그네시아 클린커 75~85%와 인상 흑연 15~25 중량%를 포함하여 조성되는 주원료와, 상기 주원료 100중량부에 대하여, 석탄계 피치 0.5~3.0 중량부; 노블락계 페놀 분말 바인더 0.5~5.0 중량부; 750~950℃의 용융온도를 가지는 Frit 0.5~5.0 중량부; 및 알루미늄 분말 1.0~5.0 중량부를 첨가하여 이루어지고, 상기 전융 마그네시아 클린커는 그 자체 중량%로, 입도가 3~5mm인 전융 마그네시아 클린커 10~25%와 입도가 1mm 이하인 전융 마그네시아 클린커 25~35%를 포함하여 조성됨을 특징으로 한다. A low-odor magnesia carbonaceous refractory composition for resolving thermal stress and a method for manufacturing the same are provided. The composition for refractory magnesia carbonaceous refractory of the present invention is composed of a main raw material composed of 75% to 85% by weight of an electrolytic magnesia clinker and 15 to 25% by weight of impression graphite, and 100 parts by weight of the coal based pitch. 0.5 to 3.0 parts by weight; 0.5 to 5.0 parts by weight of a no-block type phenolic powder binder; Frit 0.5 ~ 5.0 parts by weight having a melting temperature of 750 ~ 950 ℃; And 1.0 to 5.0 parts by weight of aluminum powder, and the electrolytic magnesia clinker has a weight percent of itself, 10 to 25 percent of electrolytic magnesia clinker having a particle size of 3 to 5 mm, and 25 to 25 percent of electrolytic magnesia clinker having a particle size of 1 mm or less. It is characterized by being composed including 35%.

Abrasive Particles and Methods of Making and Using the Same

본 발명은 연마 입자 및 그의 제조 방법에 관한 것이다. 본 발명의 실시양태를 사용하여 연마 입자를 제조할 수 있다. 이 연마 입자는 접착된 연마재, 피복된 연마재, 부직 연마재 및 연마 브러쉬를 포함한 다양한 연마 용품에 도입될 수 있다. The present invention relates to abrasive particles and methods for their preparation. Embodiments of the invention can be used to prepare abrasive particles. These abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes. 무정질 물질, 유리-세라믹, 연마 입자, 연마재 Amorphous Materials, Glass-Ceramic, Abrasive Particles, Abrasives

一种石灰回转窑用预制件及其制备方法

本发明公开了一种以富镁镁铝尖晶石废砖为主原料的石灰回转窑用预制件及其制备方法，其技术方案是：按重量百分比，由1～3mm的富镁镁铝尖晶石废砖35～40%、0.088～1mm富镁镁铝尖晶石废砖18～25%、≤0.088mm富镁镁铝尖晶石废砖粉30～35%、≤0.03mm氮化硅细粉3～6%、≤0.246mm金属铝粉0.05～1%及复合结合剂4～6%构成；外加水占主料总重量的5～6%；所述复合结合剂由重量百分比20～40%的硅微粉和重量百分比60～80%的铝酸盐水泥组成，其中硅微粉重量百分比SiO 2 含量≥93%，铝酸盐水泥重量百分比Al 2 O 3 含量≥68.75%；其制备方法包括破碎、筛分、研磨、配料、成型、烘干和热处理等工序。本发明以上述废砖为主原料，价格低廉，引入氮化硅、金属铝粉及复合结合剂显著改善该预制件性能及质量。