Abstract: A heater includes a base body, terminal and joining layer. The base body is made of ceramic. The joining layer contains metal as a principal ingredient and is located between the base body and the terminal. The base body includes a first surface and second surface. The first surface faces an outer side of the base body and includes at least one of a region which is superimposed on the terminal and a region which is located on a periphery of the terminal. The second surface intersects with the first surface and is located on the side closer to an internal portion of the base body on the side away from the first surface. The joining layer extends from the terminal and first surface up to the second surface.

Abstract: A method for determining annular fluid expansion (“AFE”) within a borehole with a sealed casing string annulus. The method may include defining a configuration of the borehole. The method may further include defining a production operation and a borehole operation. The method may also include determining AFE within the borehole when performing the production operation. The method may further include determining AFE within the borehole when performing the borehole operation based on the AFE within the borehole when performing the production operation.

Abstract: Provided is artificial marble including an artificial marble substrate having a first surface having an arithmetic mean roughness (Ra) of 1 ?m to 12 ?m; and a photocatalyst layer directly on the first surface. The artificial marble according to the present invention is lighter than existing natural stone and exhibits excellent thermoformability, and also has excellent antifouling properties by means of a photocatalyst, and thus can be widely used in various fields requiring artificial marble.

Abstract: Provided is an alumina ceramic with a low secondary electron emission coefficient and suitable for components of a high frequency generator, a plasma generator and so on. The alumina ceramic contains alumina as a main component, and at least two kinds of elements selected from an alkaline earth metal and from an element belonging to period 3, 4 or 5. The alkaline earth metal and the element belonging to period 3, 4 or 5 have a higher first ionization energy than aluminum. An electronegativity difference between the alkaline earth metal and the element belonging to period 3, 4 or 5 is 0 or more and 0.6 or less. A ratio (x/y) of the grain boundary area (x) to the grain area (y) in the alumina ceramic is 0.0001 to 0.001.

Abstract: Apparatus and methods are disclosed which apply inorganic particles to a plugged honeycomb body comprising porous walls, an inlet end and an outlet end. The apparatus comprises a particle counter and the method comprises counting a selected portion of the inorganic particles from a first sampling port upstream from the plugged honeycomb body and a second sampling port downstream from the plugged honeycomb body. The selected portion of the inorganic particles are in a preselected inorganic particle size range. Filtration efficiency can be determined while inorganic particles are being deposited, for example to increase filtration efficiency.

Abstract: A complex according to the present disclosure contains a ?-eucryptite crystal phase and a lithium tantalate crystal phase. In a temperature range of 0 to 50° C., a coefficient of thermal expansion calculated for each 1° C. is within 0±1 ppm/K. Calcium is contained in the lithium tantalate crystal phase. The volume ratio of the ?-eucryptite crystal phase to the lithium tantalate crystal phase is from 90:10 to 99.5:0.5.

Abstract: The composite sintered body includes Al2O3, and MgAl2O4. The content of Al2O3 in the composite sintered body is not less than 95.5% by weight. The average sintered grain size of Al2O3 in the composite sintered body is not less than 2 ?m and not greater than 4 ?m. The standard deviation of sintered grain size distribution of Al2O3 in the composite sintered body is not greater than 0.35. The bulk density of the composite sintered body is not less than 3.94 g/cm3 and not greater than 3.98 g/cm3. In the composite sintered body, the ratio of amount of crystal phase of MgAl2O4 to that of Al2O3 is not less than 0.003 and not greater than 0.01.

Abstract: Disclosed is to provide a composite structure used as a member for a semiconductor manufacturing apparatus with which low-particle generation can be improved, as well as a semiconductor manufacturing apparatus including the same. A composite structure including a base material and a structure that is provided on the base material and has a surface, in which the structure comprises Y3Al5O12 as a main component, and has an indentation hardness being larger than 8.5 GPa features excellent low-particle generation and is suitably used as a member for a semiconductor apparatus.

Abstract: Method for manufacturing an aluminium alloy part by additive manufacturing comprising a step during which a layer of a mixture of powders is locally melted and then solidified, characterised in that the mixture of powders comprises: first particles comprising at least 80% by mass of aluminium and up to 20% by mass of one or more additional elements, and second yttria-stabilized zirconia particles, the mixture of powders comprising at least 1.5% by volume of second particles.

Abstract: The present invention relates to an alumina sintered body and a manufacturing method therefor; for example, the present invention relates to an alumina sintered body that is suitably utilized for a member or similar used in a plasma processing device, an etcher for semiconductor/liquid crystal display device manufacturing, a CVD device, or similar, or that is suitably utilized for a substrate or similar of a plasma-resistant member which is to be coated, as well as a manufacturing method for said alumina sintered body.

Abstract: A sintered rod-shaped proppant and anti-flowback agent possesses high strength and high conductivity. The sintered rods comprise between about 0.2% by weight and about 4% by weight aluminum titanate. In some embodiments, the sintered rods are made by mixing bauxitic and non-bauxitic sources of alumina that may also contain several so-called impurities (such as TiO2), extruding the mixture, and sintering it. The starting material may optionally be milled to achieve better compacity and crush resistance in the final sintered rod. A fracturing fluid may comprise the sintered rods alone or in combination with a proppant, preferably a proppant of a different shape.

Abstract: A composition having a plurality of abrasive particles including alumina, the plurality of abrasive particles have mesoporosity with an average meso branching index of at least 55 junctions/microns2 and a median particle size (D50) of at least 5 microns.

Abstract: Provided is a transparent spinel sintered body which is formed from an Mg—Al spinel powder having an Al/Mg ratio of from 1.97 to 2.03 or a mixed powder of an Mg oxide and an Al oxide, and wherein the total content of metal impurities excluding Al and Mg is less than 100 ppm. A sample of this transparent spinel sintered body having a thickness of 3 mm has a total light transmittance of 80% or more in the thickness direction for the wavelength range of from 190 nm to 400 nm; and this transparent spinel sintered body is usable as a medium that transmits light from an ultraviolet light emitting element.

Abstract: An article may include a substrate including a ceramic or a ceramic matrix composite. The substrate defines a hot side surface configured to face a heated gas environment and a cool side surface opposite the hot side surface. The article also includes a cool side coating on the cool side surface. The cool side coating comprises at least one material having a flow temperature equal to or slightly less than a temperature of the heated gas environment.

Abstract: An article includes a body having a plasma-sprayed ceramic coating on a surface thereof. The body can be formed of at one least one of the following materials: Al, Al2O3, AlN, Y2O3, YSZ, or SiC. The plasma-sprayed ceramic coating can include at least one of Y2O3, Y4Al2O9, Y3Al5O12 or a solid-solution of Y2O3 mixed with at least one of ZrO2, Al2O3, HfO2, Er2O3, Nd2O3, Nb2O5, CeO2, Sm2O3 or Yb2O3. The plasma-sprayed ceramic coating can further include splats.

Abstract: A black plated steel sheet includes a steel sheet and an Al—Mg—Si-based plating layer disposed on one surface or both surfaces of the steel sheet; in which the plating layer includes a black layer on the outermost surface thereof, and the black layer has a weight ratio of O to (Al+Mg+Si+O) of 0.01 to 0.6.

Abstract: A paramagnetic garnet-type transparent ceramic is a sintered body of complex oxide represented by the following formula (1), comprising SiO2 as a sintering aid in an amount of more than 0% by weight to 0.1% by weight or less, and has a linear transmittance of 83.5% or more at the wavelength of 1,064 nm for an optical path length of 25 mm: (Tb1-x-yYxScy)3(Al1-zScz)5O12??(1) wherein 0.05?x<0.45, 0<y<0.1, 0.5<1?x?y<0.95, and 0.004<z<0.2.

Abstract: A heater for a semiconductor manufacturing apparatus, the heater includes an AlN ceramic substrate and a heating element embedded inside the AlN ceramic substrate. The AlN ceramic substrate contains O, C, Ti, Ca, and Y as impurity elements, includes an yttrium aluminate phase as a crystal phase, and has a Ti/Ca mass ratio of 0.13 or more, and a TiN phase is not detected in an XRD profile measured with Cu K-? radiation.

Abstract: A sightglass for a stove is provided that has a substrate made of transparent coloured lithium aluminium silicate glass ceramic. The sightglass has a light transmittance of 0.1% to 50%. Standard illuminant D65 light, after passing through the glass ceramic, at a thickness of 4 mm, has a colour locus in the white region W1 determined by the following coordinates in the chromaticity diagram CIExyY-2°: White region W1 x y 0.27 0.21 0.22 0.25 0.32 0.37 0.45 0.45 0.47 0.34 0.36 ?0.29.

Abstract: A mixed powder for a low temperature cofired ceramic material that contains 65 to 80 parts by weight of SiO2, 5 to 25 parts by weight of BaO, 1 to 10 parts by weight of Al2O3, 0.1 to 5 parts by weight of MnO, 0.1 to 5 parts by weight of B2O3, and 0.1 to less than 3 parts by weight of Li2O. The ceramic sintered body is used for, for example, ceramic electronic components, e.g., a multilayer circuit board or a coupler.

Abstract: A heater for a semiconductor manufacturing apparatus, the heater includes an AlN ceramic substrate and a heating element embedded inside the AlN ceramic substrate. The AlN ceramic substrate contains O, C, Ti, Ca, and Y as impurity elements, includes an yttrium aluminate phase as a crystal phase, and has a Ti/Ca mass ratio of 0.13 or more, and a TiN phase is not detected in an XRD profile measured with Cu K-? radiation.

Abstract: The present invention relates to a composite material, particularly a composite material for ceramic tiles, stone cladding, surface tops (e.g. worktops), and the like. The composite materials are typically derived from waste products. The composite materials of the present invention are formed from a glass component and a non-glass mineral component (e.g. ceramics and/or glaze). Generally the composite materials do not require any binders (especially synthetic binders) to hold the materials together. Therefore, the composite materials and products made therefrom are typically recyclable.

Abstract: A method of manufacturing an insulator for a spark plug comprises the steps of combining at least two raw materials to form a powdered insulator formulation, spray drying the powdered insulator formulation, and pressing the powdered insulator formulation to create an insulator blank. The method further includes the steps of bisque firing the insulator blank, grinding the bisque fired insulator blank to form the insulator, and sintering the insulator.

Abstract: A coated abrasive article includes a backing, a make layer, crushed abrasive particles, and a size layer. The crushed abrasive particles include: 35 to 100 weight percent of initial crushed abrasive particles having a first composition and first size grade, wherein a majority of the initial crushed abrasive particles are platey crushed abrasive particles, and wherein each platey crushed abrasive particle has a respective length, width, and thickness; and 0 to 65 weight percent of crushed filler particles having a second composition and a second size grade. The first and second compositions and/or size grades are different. The coated abrasive article has a direction of intended use, a majority of the platey crushed abrasive particles of the coated abrasive article are positioned with their thickness oriented substantially parallel to the direction of intended use. A method of making the coated abrasive article is also disclosed.

Abstract: If a conductive mayenite compound having a large specific surface area is obtained, the usefulness thereof in respective applications is remarkably increased. A conductive mayenite compound powder having a conduction electron density of 1015 cm?3 or more and a specific surface area of 5 m2g?1 or more is produced by: the following steps: (1) forming a precursor powder by subjecting a mixture of a starting material powder and water to a hydrothermal treatment; (2) forming a mayenite compound powder by heating and dehydrating the precursor powder; (3) forming an activated mayenite compound powder by heating the compound powder in an inert gas atmosphere or in a vacuum; and (4) injecting electrons into the mayenite compound through a reduction treatment by mixing the activated mayenite compound powder with a reducing agent.

Abstract: A composite body including a substrate and a forming portion which is composed of a composite phase containing a perovskite oxide and a metal oxide different from the perovskite oxide and which is formed on the substrate. The composite body may be a composite body manufactured by a manufacturing method including a forming step of firing in an oxidizing atmosphere, a laminated body in which an inorganic raw material powder containing a compound powder and a metal powder is disposed on a substrate so as to form a forming portion composed of a composite phase containing a perovskite oxide and a metal oxide different from the perovskite oxide on the substrate.

Abstract: A composite body including a substrate and a forming portion which is composed of a composite phase containing a perovskite oxide and a metal oxide different from the perovskite oxide and which is formed on the substrate. The composite body may be a composite body manufactured by a manufacturing method including a forming step of firing in an oxidizing atmosphere, a laminated body in which an inorganic raw material powder containing a compound powder and a metal powder is disposed on a substrate so as to form a forming portion composed of a composite phase containing a perovskite oxide and a metal oxide different from the perovskite oxide on the substrate.

Abstract: The present invention relates to a porous aggregate, comprising Al2O3, SiO2 and optionally Fe2O3, having a d50 of equivalent pore diameter between 1 ?m or more and 50 ?m or below and a total porosity between 20% and 60%, for use in the formation of monolithic refractories. Also part of the invention is a method of formation for said aggregates, their use in the formation of monolithic refractories and monolithic refractories comprising such aggregates.

Abstract: A ceramic filter is provided with a porous substrate 3 “made of ceramic and having partition walls 1 separating and forming a plurality of cells 2 extending from one end face 11 to the other end face 12”, a separation membrane 21 “made of ceramic and disposed on wall surfaces of the cells 2”, and glass seals 31 disposed on the one end face 11 and on the other end face 12 “so as not to cover openings of the cells 2”. Ceramic particles having a thermal expansion coefficient of 90 to 110% of that of glass contained in the glass seals 31 are dispersed in the glass seals 31. There is provided a ceramic filter usable for a long period of time in high temperature conditions.

Abstract: Provided are an aluminum alloy and a production method thereof. In accordance with an embodiment, an aluminum-based mother material is melted to form a molten metal. An additive including silicon oxide is added to the molten metal. At least a portion of the silicon oxide is exhausted in the molten metal. The molten metal is cast.

Abstract: The present invention is an electrostatic chuck including a ceramic base body and an adsorption electrode provided inside of or on the lower surface of the ceramic base body and having a portion where a Mn content is 1×10?4% by mass or less in a region from the upper surface of the ceramic base body to the adsorption electrode.

Abstract: The present invention relates to a composition for forming a friable-resistant dielectric porcelain material. The present invention also relates to a friable-resistant dielectric porcelain material formed from the composition of the present invention, a method of making a friable-resistant dielectric porcelain material, a friable-resistant dielectric porcelain material formed by the method of the present invention, a dielectric porcelain material comprising a particular composition, and a system for producing ozone using the dielectric porcelain material of to the present invention.

Abstract: Provided is a process for producing a ceramic for a heat-radiating member. The process includes providing as a raw material an alumina powder having an alumina (Al2O3) content of at least 99.5 mass % and an average particle size of from 0.2 to 1 ?m, and granulating the powder into a granular form ranging from 50 to 100 ?m, pressing the raw material which has been obtained in the granulation step and which includes granular alumina, and heating a green compact in an air atmosphere at a firing temperature of from 1,480 to 1,600° C. to obtain a sintered body. Also provided is a process for producing a ceramic for a heat-radiating member, the ceramic being a sintered alumina body which has high thermal conductivity, efficient heat dissipation, excellent mechanical strength and thermal shock resistance and which is usable for cooling applications at heat generating areas of electronic devices and equipment.

Abstract: The object of the present invention is to provide an embedding material composition for casting that makes it possible to conduct a favorable casting in the case where casting is conducted using a resin pattern that is different from a conventional wax pattern in disappearance temperature and disappearance behaviors through “rapid heating” excellent in treatment efficiency. The present invention relates to an embedding material composition for casting not using a heat-expandable refractory material as a main component, comprising: a binder; and a non-heat-expandable refractory material having an average particle diameter of 5 to 20 ?m as main components, in which a content of the binder is 25 to 40 parts by mass and a content of the non-heat-expandable refractory material is 60 to 75 parts by mass in the case where the total amount of the main components is 100 parts by mass, and the present invention also relates to a casting process using the embedding material composition for casting.

Abstract: The high-withstanding-voltage member includes an alumina sintered compact containing alumina as a main crystal. Furthermore, the alumina sintered compact exhibits a peak intensity of 5000 or less at a wavelength of about 330 nm when measured by a cathode luminescence method.

Abstract: A permanent filter for a medical sterilization container is provided. The permanent filter is made from a ceramic. The ceramic is made from globular substrate grains. A medical sterilization container is also provided, in particular for receiving and storing objects to be sterilized, having a container bottom part and a container top part for closing the container bottom part in a closed position of the sterilization container. At least one of the container bottom part and the container top part have a gas exchange orifice, which is closed with a permanent filter. The permanent filter is made from a ceramic and the ceramic is made from globular substrate grains. In addition, a method is provided for producing a permanent filter for a medical sterilization container. The permanent filter is produced from a ceramic material by sintering. Globular substrate grains are used as the ceramic material.

Abstract: A separation membrane according to the present invention is characterized by having a porous tube containing an alumina as a main component and an attachment member disposed in a connection position of the porous tube, wherein the porous tube and the attachment member are bonded by a ceramic oxide-based bonding agent containing 17 to 48 wt % of SiO2, 2 to 8 wt % of Al2O3, 24 to 60 wt % of BaO, and 0.5 to 5 wt % of ZnO as essential components and containing at least one of La2O3, CaO, and SrO, and a thin zeolite layer is formed on a surface of the porous tube. The attachment member is bonded to the porous tube before the formation of the zeolite layer. Therefore, the bonding agent can have a melting temperature higher than 600° C., which is the upper heatproof temperature limit of the zeolite. Thus, the ceramic oxide material for the bonding agent can be selected from a wider range of compositions such as glass compositions (without limitations on the glass softening temperature).

Abstract: To provide a glass ceramic body wherein the deterioration of the reflectance due to black coloration is suppressed, and the unevenness of the firing shrinkage is suppressed. A glass ceramic body comprising a glass matrix and alumina particles dispersed therein, wherein the glass matrix is not crystallized, a ceramic part composed of the dispersed alumina particles has an ?-alumina crystal structure and a crystal structure other than the ?-alumina crystal structure.

Abstract: A composition may be suitable for firing to obtain a ceramic material therefrom. A green body or ceramic material may be formed from the composition. Ballistic armour may be formed from the composition or may include the ceramic material.

Abstract: Provided is a method of producing an aluminum composite material, the method including: a decalcification treatment step of eluting a calcium oxide component from cement to form decalcified cement having a reduced content of the calcium oxide component; and an aluminum oxide formation step of bringing molten aluminum into contact with the decalcified cement to replace, among metal oxide components contained in the decalcified cement, metal oxide components other than the calcium oxide component, in particular, a silicon dioxide component, with aluminum oxide.

Abstract: The invention relates to an alumina-based opaque ceramic, similar to ruby and having a high toughness. This ceramic comprises, by weight: 0.4% to 5% of at least from one oxide of a metal chosen from chromium, cobalt, nickel, manganese, vanadium, titanium and iron; 0.00080 to 0.5% of magnesium oxide; and 0.05 to 6% of at least one oxide of an element of the group of rare earths. The ceramic is applicable in particular in jewelry, fine jewelry and watch making. The invention also relates to methods of preparing such a ceramic.

Abstract: The disclosure relates generally to core compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to core compositions and methods for casting hollow titanium-containing articles, and the hollow titanium-containing articles so molded.

Abstract: Described herein are nanofibers and methods for making nanofibers that have a plurality of pores. The pores have of any suitable size or shape. In some embodiments the pores are “mesopores”, having a diameter between 2 and 50 nm. In some embodiments, the pores are “ordered”, meaning that they have a substantially uniform shape, a substantially uniform size and/or are distributed substantially uniformly through the nanofiber. Ordering of the pores results in a high surface area and/or high specific surface area. Ordered pores, without limitation, result in a nanofiber that is substantially flexible and/or non-brittle. The nanofibers and methods for making nanofibers may be used, without limitation, in batteries, capacitors, electrodes, solar cells, catalysts, adsorbers, filters, membranes, sensors, fabrics and/or tissue regeneration matrixes.

Abstract: The invention relates to a composition, which comprises a particulate mixture of: (i) 25 to 80% calcined clay; (ii) 5 to 70% fluxing component; and (iii) 5 to 70% filler component.

Abstract: Provided is a method for producing inorganic fiber including: preparing a spinning raw material liquid which comprises an aluminum source, a calcium source, a silicon source and a spinning auxiliary, in which the content of the spinning auxiliary is, in terms of solid matter, 3 parts by mass or more relative to 100 parts by mass of the total of the aluminum source, the calcium source and the silicon source; spinning the spinning raw material liquid by a sol-gel method to obtain crude inorganic fiber; and firing the crude inorganic fiber to produce inorganic fiber that comprises 35 mass % to 88 mass % of Al2O3, 3 mass % to 45 mass % of CaO and 5 mass % to 40 mass % of SiO2 in which the total of Al2O3, CaO and SiO2 is 97 mass % or more of the entire fiber.

Abstract: Porous aluminum-containing ceramic bodies are treated to form acicular mullite crystals onto the surfaces of their pores. The crystalsare formed by contacting the body with a fluorine-containing gas or a source of both fluorine and silicon atoms to form fluorotopaz at the surface of the pores, and then decomposing the fluorotopaz to form acicular mullite crystals. This process allows the surface area of the ceramic body to be increased significantly while retaining the geometry (size, shape, general pore structure) of the starting body. The higher surface area makes the body more efficient as a particulate filter and also allows for easier introduction of catalytic materials.

Abstract: A cordierite material having an increased ?-cordierite phase and a reduced ?-cordierite phase is described. Methods of making the cordierite material are further described, and a proppant containing the cordierite is further described, as well as use of the proppant.

Abstract: A high performance transparent polycrystalline ceramic material is provided. The transparent polycrystalline ceramic material has a nitrogen-containing isotropic lattice structure and having 80% optical transmission at a wavelength between 3.86 and 4.30 microns through said material at 11 mm of thickness.

Abstract: The invention relates to a powder comprising more than 70% of refractory particles, in weight percent relative to the weight of the powder, a particle of said powder being classed in the fraction called “matrix” or in the fraction called “aggregate”, according to whether it is smaller than, or equal to 100 ?m, or larger than 100 ?m, respectively, said powder comprising, in weight percent relative to the weight of the powder: between 0.1% and 18% of particles of a heat-activatable binder, called “heat-activatable binder particles”; and more than 40% of refractory particles, called “ATZ particles”, having the following chemical composition, in weight percentages on the basis of the oxides of said ATZ particles: 10%?Al2O3?55%; 35%?TiO2?80%; 1%?MgO+Cr2O3?10%; 8%?ZrO2?20%; SiO2?8%.

Abstract: Ceramic nanocomposites and methods for manufacturing the ceramic nanocomposites are disclosed. One method includes introducing to a fired green ceramic body having a ceramic matrix submicron particles having coefficient of thermal expansion lower than the coefficient of thermal expansion of the ceramic matrix and at least one type of location-controlling dopant at an amount that is sufficient to cover the majority of the ceramic matrix grain boundaries. One ceramic nanocomposite includes a ceramic matrix with submicron particles dispersed in the ceramic matrix, the submicron particles having a coefficient of thermal expansion lower than the coefficient of thermal expansion of the ceramic matrix and at least one dopant that covers the majority of the ceramic matrix grain boundaries, at a concentration that does not exceed the bulk solubility limit of the dopant in the ceramic matrix at the ceramic nanocomposite sintering temperature.