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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 3567. Отображено 100.
22-11-2012 дата публикации

Metal powder, ultraviolet ray curable ink jet composition and recorded object

Номер: US20120295082A1
Автор: Hidekazu Moriyama, Homare Kuribayashi, Koki HIRATA, Masaru Terada, Masaya Shibatani, Minoru Yamada, Naoyuki Toyoda, Taketoshi KAGOSE, Tomohiro Ogawa, Toshiyuki Kobayashi
Принадлежит: Seiko Epson Corp

The invention provides metal powder constituted from metal particles. Each of the metal particles comprises a base particle having a surface and a metal material constituting at least the surface of the base particle. The base particle is subjected to a surface treatment with a fluorine type phosphoric acid ester. Further, the invention also provides an ultraviolet ray curable ink jet composition to be ejected by using an ink jet method. The ultraviolet ray curable ink jet composition comprises a polymerizable compound and metal powder constituted from metal particles. The metal particles of the metal powder are subjected to a surface treatment with a fluorine type phosphoric acid ester.

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Номер записи: 1
17-01-2013 дата публикации

Thermal sprayed coating of jig for producing glass sheet, and jig for producing glass sheet

Номер: US20130014543A1
Автор: Kazuo Hamashima, Yasunari Ishikawa
Принадлежит: Asahi Glass Co Ltd

To provide a thermal sprayed coating of a jig for producing glass having favorable wear resistance and lubricity at high temperature of at least the strain point of a glass sheet. A thermal sprayed coating of a jig for producing a glass sheet, to be used for a jig for producing glass to be in contact with a glass sheet at a temperature of at least the strain point, which comprises tungsten carbide; at least one metal carbide selected from the group consisting of titanium carbide, zirconium carbide, hafnium carbide, niobium carbide, tantalum carbide, chromium carbide and molybdenum carbide; a metal containing Ni; and inevitable impurities, and a jig for producing a glass sheet comprising the thermal sprayed coating.

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Номер записи: 2
18-04-2013 дата публикации

Adjustable Support For Tubular Medical Device Processing

Номер: US20130091680A1
Автор: Adam K. Hoopai
Принадлежит: Abbott Cardiovascular Systems Inc

An apparatus and method for supporting a tubular medical device, such as a stent or scaffold, includes a rod disposed between two collets. The rod can be shaped to form a range of different size or length helical supports to support a wide range of tubular medical devices. The rod is shaped into a full or partial helix by rotating one of the collets relative to the other.

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Номер записи: 3
29-08-2013 дата публикации

Lubricant system for use in powder metallurgy

Номер: US20130224060A1
Автор: Francis G. Hanejko, William Tambussi
Принадлежит: Hoeganaes Corp

The present invention is directed to metallurgical powder compositions having improved lubricant properties. These compositions of the invention include at least 90 wt. % of an iron-based metallurgical powder; a Group 1 or Group 2 metal stearate; a first wax having a melting range of between about 80 and 100° C.; a second wax having a melting range of between about 80 and 90° C.; inc phosphate; boric acid; acetic acid; phosphoric acid; and polyvinylpyrrolidone. Methods of compacting the compositions, as well as compacted articles prepared using those methods, are also described.

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Номер записи: 4
03-10-2013 дата публикации

Process for Producing Silver Nanowires and Agent for Controlling Growth of Silver Nanowires

Номер: US20130255444A1
Автор: Tomoaki Kawaguchi, Toshiyuki Hasegawa
Принадлежит: Seiko PMC Corp

Provided is a process for silver nanowire production in which the major-axis length of the silver nanowires can be controlled in a wide range and an agent for controlling the growth of silver nanowires. A process for silver nanowire production which is characterized in that an agent for controlling the growth of silver nanowires which comprises a polymer obtained by polymerizing one or more polymerizable monomers comprising an N-substituted (meth)acrylamide is reacted with a silver compound in a polyol at 25-180° C. The agent for controlling the growth of silver nanowires is characterized by comprising a polymer which has units of an N-substituted (meth)acrylamide as a polymerizable monomer.

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Номер записи: 5
06-01-2022 дата публикации

POWDER DISPERSION COMPOSITION AND DISPERSING METHOD THEREOF

Номер: US20220001443A1
Автор: KATORI Takahiro, NASU Akio, SATONE Hiroshi
Принадлежит: SHISEIDO COMPANY, LTD.

The object of the present invention is to provide a powder dispersion composition capable of giving high SPF values while maintaining feeling on use required for oil-in-water cosmetics, such as freshness and being easy to spread and reducing burden on the skin. 1. A powder dispersion composition prepared by dispersing powder , wherein the powder has an average particle size of 10 times or less the primary particle size of the powder , the polydispersity index (PDI value) of the average particle size of the powder dispersion composition is 0.4 or less and the absorbance per 1% of the powder is 150 or more.2. The powder dispersion composition according to claim 1 , comprising a silicone dispersant having an HLB of 2 or less.3. The powder dispersion composition according to claim 1 , wherein the dispersant is glycerol modified with silicone at both terminals.4. The powder dispersion composition according to claim 1 , wherein the powder is titanium dioxide or zinc oxide.5. The powder dispersion composition according to claim 1 , comprising 75% or less of the powder.6. The powder dispersion composition according to claim 1 , further comprising a lower alcohol.7. A method for producing the composition according to claim 1 , comprising mixing an oil phase and an aqueous phase with stirring in a first step and homogenizing the mixture prepared in the first step based on the principle of cavitation in a second step. The present application claims the priority of Japanese Patent Application No. 2018-212413 filed on Nov. 12, 2018, which is incorporated herein.The present invention relates to a powder dispersion composition, and in particular, to improvement in the technique of dispersing fine particles thereof.Sunscreen cosmetics are designed to block ultraviolet light in sunlight to protect the skin from harmful effects caused by ultraviolet light. Their bases include an emulsion type base, a lotion type base and an oil type base. Emulsion type bases are roughly classified ...

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Номер записи: 6
07-01-2021 дата публикации

Three-dimensional printing

Номер: US20210001401A1
Автор: David A Champion, James Mckinnell, Mohammed S Shaarawi, Vladek Kasperchik
Принадлежит: Hewlett Packard Development Co LP

In an example of a method for three-dimensional (3D) printing, build material layers are patterned to form an intermediate structure. During patterning, a binding agent is selectively applied to define a patterned intermediate part. Also during patterning, i) the binding agent and a separate agent including a gas precursor are, or ii) a combined agent including a binder and the gas precursor is, selectively applied to define a build material support structure adjacent to at least a portion of the patterned intermediate part. The intermediate structure is heated to a temperature that activates the gas precursor to create gas pockets in the build material support structure.

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Номер записи: 7
07-01-2021 дата публикации

NITROGEN SOLID SOLUTION TITANIUM SINTERED COMPACT AND METHOD FOR PRODUCING SAME

Номер: US20210001405A1
Автор: KONDOH Katsuyoshi
Принадлежит:

An nitrogen solid solution titanium sintered compact includes a matrix made of a titanium component having an α-phase, nitrogen atoms dissolved as a solute of solid solution in a crystal lattice of the titanium component, and metal atoms dissolved as a solute of solid solution in the crystal lattice of the titanium component. 115-. (canceled)16. A nitrogen solid solution titanium sintered compact comprising:a matrix made of a titanium component having an α-phase;nitrogen atoms dissolved as a solute of solid solution in a crystal lattice of a hexagonal close-packed structure of said titanium component; andmetal atoms dissolved as a solute of solid solution in the crystal lattice of a hexagonal close-packed structure of said titanium component.17. The nitrogen solid solution titanium sintered compact according to claim 16 , whereina compound of said titanium component and said metal atoms exceeding a solid solubility limit of dissolving into the α-phase is dispersed in said matrix.18. The nitrogen solid solution titanium sintered compact according to claim 16 , wherein a metal of said metal atoms is a metal selected from the group consisting of Al claim 16 , Si claim 16 , Cr claim 16 , V claim 16 , Mo claim 16 , Ta claim 16 , and Zr.19. A nitrogen solid solution titanium material sintered compact comprising:a matrix made of a titanium component having an α-phase;nitrogen atoms dissolved as a solute of solid solution in a crystal lattice of a hexagonal close-packed structure of said titanium component; anda metal component that is present by being dispersed in said matrix.20. The nitrogen solid solution titanium sintered compact according to claim 19 , wherein said metal component is made of metal atoms that are deposited in said matrix.21. The nitrogen solid solution titanium sintered compact according to claim 19 , wherein said metal component is a compound of metal atoms and said titanium component.22. The nitrogen solid solution titanium sintered compact according ...

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Номер записи: 8
07-01-2016 дата публикации

MAGNETIC COMPONENT, AND SOFT MAGNETIC METAL POWDER USED THEREIN AND MANUFACTURING METHOD THEREOF

Номер: US20160001371A1
Автор: GOTOH Masahiro, IKARI Kazumasa, YOSHIDA Takayuki
Принадлежит: DOWA ELECTRONICS MATERIALS CO., LTD.

A soft magnetic metal powder is manufactured. An aqueous solution of at least one of aluminum, silicon, a rare-earth element (including Y), and magnesium is added into a solution containing an iron ion while blowing a gas containing oxygen thereinto, to form a precursor containing at least one of aluminum, silicon, a rare-earth element (including Y), and magnesium. The precursor is reduced to obtain a metal powder. The metal powder is further slowly oxidized with oxygen to form an oxidized film on the surface of the metal powder. 1. A method of manufacturing a soft magnetic metal powder , comprising:an aqueous solution of at least one of aluminum, silicon, a rare-earth element (including Y), and magnesium is added into a solution containing an iron ion while blowing a gas containing oxygen thereinto, to form a precursor containing at least one of aluminum, silicon, a rare-earth element (including Y), and magnesium;the precursor is reduced to obtain a metal powder; andthe metal powder is further slowly oxidized with oxygen to form an oxidized film on the surface of the metal powder.2. The method of manufacturing a soft magnetic metal powder according to claim 1 ,wherein the solution containing an iron ion is an aqueous solution of an iron compound and a cobalt compound.3. The method of manufacturing a soft magnetic metal powder according to claim 1 ,wherein the precursor shows a spinel-type crystal structure by a powder X-ray diffraction method.4. The method of manufacturing a soft magnetic metal powder according to claim 1 ,wherein the reducing the precursor includes exposing the precursor to a reduction gas at a temperature of 250° C. to 650° C.5. The method of manufacturing a soft magnetic metal powder according to claim 1 ,wherein the further reacting comprises exposing the metal powder to an inert gas containing oxygen at a temperature of 20° C. to 150° C.6. The method of manufacturing a soft magnetic metal powder according to claim 2 ,wherein the precursor ...

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Номер записи: 9
04-01-2018 дата публикации

CARBON-COATED METAL POWDER, CONDUCTIVE PASTE CONTAINING CARBON-COATED METAL POWDER AND MULTILAYER ELECTRONIC COMPONENT USING SAME, AND METHOD FOR MANUFACTURING CARBON-COATED METAL POWDER

Номер: US20180001388A9
Автор: AKIMOTO Yuji, Iwasaki Mineto, Matsuo Akiko, TANAKA Hideki
Принадлежит:

This invention aims at providing a carbon-coated metal powder having few impurities, a narrower particle size distribution, and sintering properties particularly suitable as a conductive powder of a conductive paste for forming internal conductors in a ceramic multilayer electronic component obtained by co-firing multilayered ceramic sheets and internal conductor layers; a conductive paste containing the carbon-coated metal powder; a multilayer electronic component using the conductive paste; and a method for manufacturing the carbon-coated metal powder. The carbon-coated metal powder has specific properties in TMA or ESCA measurements. The carbon-coated metal powder can be obtained by melting and vaporizing a metallic raw material in a reaction vessel, conveying the generated metal vapor into a cooling tube and rapidly cooling the metal vapor by endothermically decomposing a carbon source supplied into the cooling tube, and forming a carbon coating film on metal nuclei surfaces in parallel with generation of the metal nuclei. 2. The carbon-coated metal powder according to claim 1 , wherein when the temperature width of 200° C. giving the Xis taken as not less than T° C. to not more than (T+200)° C. claim 1 , T° C.>400° C.3. The carbon-coated metal powder according to claim 1 , wherein X′ represented by X′ (%)=(X′/X)×100 is 30 or less claim 1 , when X′is a maximum shrinkage percentage in a range of from a room temperature to 400° C.4. The carbon-coated metal powder according to claim 1 , wherein the metal powder includes at least one of nickel and copper.5. A carbon-coated metal powder comprising a nickel-based powder consisting essentially of nickel only or comprising nickel as a main component claim 1 , and a carbon coating film that covers the nickel-based powder claim 1 , wherein{'sup': '2', 'an oxygen content in a weight proportion of an oxygen component to the carbon-coated metal powder of a unit weight is 1500 ppm or less per specific surface area of 1 m/g of ...

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Номер записи: 10
03-01-2019 дата публикации

METHOD OF MANUFACTURING A CEMENTED CARBIDE MATERIAL

Номер: US20190001414A1
Автор: HINNERS Hauke, KONYASHIN IGOR YURIEVICH, Ries Bernd Heinrich
Принадлежит: ELEMENT SIX GMBH

A method of fabricating a cemented carbide article by additive manufacturing, and a granular material are disclosed. A precursor material is provided that comprises granules, the granules comprising carbide grains and a binder comprising any of cobalt, nickel and iron. Each granule has a density of at least % of the theoretical density and the granules of the precursor material have a mean compressive strength of at least megapascals (MPa). An additive manufacturing process is used to manufacture the article by building up successive layers of material derived from the precursor material. 1. A method of fabricating a cemented carbide article by additive manufacturing , the method comprising:providing a granular precursor material comprising granules, the granules comprising carbide grains and a binder comprising any of cobalt, nickel and iron, and wherein each granule has a density of at least 99.5% of the theoretical density and the granules of the precursor material have a mean compressive strength of at least 40 megapascals, MPa; andusing an additive manufacturing process to manufacture the article by building up successive layers of material derived from the precursor material.2. The method as claimed in claim 1 , in which each granule of the precursor material has a density selected from any of at least 99.7% of the theoretical density claim 1 , at least 99.9% of the theoretical density claim 1 , and 100% of the theoretical density.3. The method as claimed in claim 1 , in which the granules of the precursor material have a mean compressive strength selected from any at least 60 MPa claim 1 , and at least 100 MPa.4. The method as claimed in claim 1 , in which the granules of the precursor material have sizes selected from any of between 20 microns and 200 microns claim 1 , between 30 microns and 120 microns claim 1 , and between 40 microns and 90 microns.5. The method as claimed in claim 1 , in which providing the granules of the precursor material comprises: ...

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Номер записи: 11
05-01-2017 дата публикации

AQUEOUS SLURRY FOR MAKING A POWDER OF HARD MATERIAL

Номер: US20170001916A1
Автор: MEHROTRA PANKAJ K., Myers Neal S., TRIVEDI Pankaj B.
Принадлежит:

An aqueous slurry that is useful upon being spray dried for the formation of a powder of hard material. The aqueous slurry includes starting powder components of the hard material. The slurry further includes an oxidation inhibitor, a surfactant in an amount between about 0.05 weight percent and about 0.30 weight percent of the weight of the starting powder components of the hard material, a binder, a defoamer and water in an between about 15 weight percent and about 30 weight percent of the weight of the weight of the starting powder components of the hard material. The aqueous slurry has a percent solids value that is between about 70 percent and about 85 percent. 1. A powder of hard material produced by the process comprising the steps of:spray drying an aqueous slurry comprising:starting powder components of the hard material;an oxidation inhibitor in an amount of about 0.2 weight percent to about 0.5 weight percent based on weight of the starting powder components of the hard material;a surfactant in an amount of about 0.05 weight percent to about 0.30 weight percent of the weight of the starting powder components of the hard material;a binder in an amount of about 1.2 weight percent to about 4.0 weight percent of the weight of the starting powder components of the hard material;a defoamer in an amount of about 0.05 weight percent to about 0.35 weight percent of the weight of the starting powder components of the hard material; andwater in an amount of about 15 weight percent and about 30 weight percent of the weight of the starting powder components of the hard material; andthe aqueous slurry having a percent solids of about 70 percent to about 85 percent wherein the percent solids comprises a quotient in percent of the weight of the starting powder components of the hard material divided by the sum of the weight of the starting powder components of the hard material and the weight of the water.2. The powder of hard material of claim 1 , wherein granule size ...

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Номер записи: 12
01-01-2015 дата публикации

NANOSTRUCTURED FERRITIC ALLOY AND METHOD OF FORMING

Номер: US20150004044A1
Автор: Alinger Matthew Joseph, Dial Laura Cerully, DiDomizio Richard
Принадлежит: GENERAL ELECTRIC COMPANY

An alloy and method of forming the alloy are provided. The alloy includes a matrix phase, and a multimodally distributed population of particulate phases dispersed within the matrix. The matrix includes iron and chromium, and the population includes a first subpopulation of particulate phases and a second subpopulation of particulate phases. The first subpopulation of particulate phases include a complex oxide, having a median size less than about 15 nm, and present in the alloy in a concentration from about 0.1 volume percent to about 5 volume percent. The second subpopulation of particulate phases have a median size in a range from about 25 nm to about 10 microns, and present in the alloy in a concentration from about 0.1 volume percent to about 15 volume percent. Further embodiments include articles, such as turbomachinery components and fasteners, for example, that include the above alloy, and methods for making the alloy. 1. An alloy , comprising: a first subpopulation of particulate phases comprising a complex oxide, having a median size less than about 15 nm, and present in the alloy in a concentration from about 0.1 volume percent to about 5 volume percent; and', 'a second subpopulation of particulate phases having a median size in a range from about 25 nm to about 10 microns, and present in the alloy in a concentration from about 0.1 volume percent to about 15 volume percent., 'a matrix phase comprising iron and chromium; and a multimodally distributed population of particulate phases dispersed within the matrix, the population comprising2. The alloy of claim 1 , wherein the particulate phases of the first subpopulation comprise at least two elements of the following group: yttrium claim 1 , titanium claim 1 , aluminum claim 1 , zirconium claim 1 , hafnium claim 1 , and magnesium.3. The alloy of claim 2 , wherein the particulate phases of the first subpopulation comprise yttrium and titanium.4. The alloy of claim 1 , wherein the particulate phases of the ...

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Номер записи: 13
13-01-2022 дата публикации

Methods for Producing Metal Powders

Номер: US20220008993A1
Автор: Finnerty Donald, Henderson David, Koenitzer John W., Matheson Andrew, Van Lieshout Richard
Принадлежит:

A method for producing a metal powder includes maintaining molten reducing metal in a sealed reaction vessel that is free of added oxygen and water, establishing a vortex in the molten reducing metal, introducing a metal halide into the vortex so that the molten reducing metal is in a stoichiometric excess to the metal halide, thereby producing metal particles and salt, removing unreacted reducing metal, removing the salt, and recovering the metal powder. The molten reducing metal can be a Group I metal, a Group II metal, or aluminum. 126-. (canceled)27. A process for the phase separation of excess molten reducing metal reductant from a vortex created mixture of a metal powder and a salt , wherein a bakeout vessel containing the mixture is heated to a temperature above the melting point of the salt in the mixture , thereby forming a salt bath phase , which includes the metal powder , and a separate molten reducing metal phase , followed by separation of the molten reducing metal phase from the bakeout vessel.28. The process of claim 27 , wherein the molten reducing metal phase is separated from the bakeout vessel by decanting the molten reducing metal phase into another vessel.29. The process of claim 27 , wherein the molten reducing metal phase is separated from the bakeout vessel by siphoning the molten reducing metal phase into a capture tank.30. The process of claim 29 , wherein a negative pressure is employed in the capture tank to facilitate the siphoning of the molten reducing metal phase. This application is a continuation of commonly owned copending U.S. application Ser. No. 16/282,385, filed Feb. 22, 2019, now U.S. Pat. No. 11,130,177. The '385 application is a continuation of commonly owned copending U.S. application Ser. No. 15/051,267, filed Feb. 23, 2016, now U.S. Pat. No. 10,245,642. The '267 application claims the benefit of U.S. Provisional Application No. 62/119,677, filed on Feb. 23, 2015. The entire teachings of these applications are hereby ...

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Номер записи: 14
03-01-2019 дата публикации

LIGHT-WEIGHT, LOW-RESISTIVITY TRANSFER MATERIALS AND METHODS OF MAKING AND PRODUCTS CONTAINING THE SAME

Номер: US20190006127A1
Автор: Jimenez Gonzalez Eduardo, Rodriguez Salinas Juan Jose
Принадлежит:

In some embodiments, a method is provided that includes (1) providing aluminum; (2) providing carbon nanotube material; (3) combining the aluminum and carbon nanotube material to form a current-carrying, aluminum-carbon-nanotube component of an electrical switch device; and (4) assembling the electrical switch device using the aluminum-carbon-nanotube component. The aluminum-carbon-nanotube component is formed so as to have at least one of lower electrical resistivity and greater thermal conductivity than a component formed of aluminum without carbon nanotube material. Numerous other embodiments are provided. 1. A method , comprising:providing aluminum;providing carbon nanotube material;combining the aluminum and carbon nanotube material to form a current-carrying, aluminum-carbon-nanotube component of an electrical switch device; andassembling the electrical switch device using the aluminum-carbon-nanotube component, wherein the aluminum-carbon-nanotube component is formed so as to have at least one of lower electrical resistivity and greater thermal conductivity than a component formed of aluminum without carbon nanotube material.2. The method of claim 1 , wherein combining the aluminum and carbon nanotube material to form a current-carrying claim 1 , aluminum-carbon-nanotube component of an electrical circuit breaker comprises:providing a first amount of a powdered aluminum;providing a second amount of a carbon-based material;disposing the first amount of the powdered aluminum and the second amount of the carbon-based material in a grinding and blending apparatus;grinding and blending the first amount of the powdered aluminum and the second amount of the carbon-based material to form a mixture;sintering the mixture to form a sintered mixture; andforming a shaped structure from the sintered mixture.3. The method of claim 2 , wherein providing the second amount of the carbon-based material comprises:providing the second amount of multi-walled carbon nanotubes; ...

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Номер записи: 15
02-01-2020 дата публикации

PRINTABLE LITHIUM COMPOSITIONS

Номер: US20200006760A1
Автор: Fitch Kenneth Brian, Greeter, JR. William Arthur, Xia Jian, Yakovleva Marina
Принадлежит:

A printable lithium composition is provided. The printable lithium composition includes lithium metal powder; a polymer binder, wherein the polymer binder is compatible with the lithium powder; and a rheology modifier, wherein the rheology modifier is compatible with the lithium powder and the polymer binder. The printable lithium composition may further include a solvent compatible with the lithium powder and with the polymer binder. 1. A printable lithium composition comprising:a) lithium metal powder;b) a polymer binder, wherein the polymer binder is compatible with the lithium metal powder;c) a rheology modifier, wherein the rheology modifier is compatible with the lithium metal powder and the polymer binder; andd) a solvent, wherein the solvent is compatible with the lithium metal powder and with the polymer binder.2. The printable lithium composition of claim 1 , wherein the lithium metal powder is stabilized lithium metal powder.3. The printable lithium composition of wherein the lithium metal powder is alloyed with a metal selected from the group consisting of aluminum claim 1 , boron claim 1 , germanium claim 1 , silicon claim 1 , indium claim 1 , and magnesium.4. The printable lithium composition of claim 1 , wherein the viscosity of the printable lithium composition at 10 sshear is about 20 to about 20 claim 1 ,000 cps.5. The printable lithium composition of claim 1 , wherein the printable lithium composition is chemically stable for up to six months at room temperature and is stable against metallic lithium loss at temperatures up to about 60° C.6. The printable lithium composition of claim 1 , wherein the rheology modifier is a conductive material.7. The printable lithium composition of claim 6 , wherein the conductive material is selected from the group consisting of carbon black claim 6 , carbon nanotubes claim 6 , and graphene.8. The printable lithium composition of claim 1 , wherein the rheology modifier provides improved capacity and is ...

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Номер записи: 16
12-01-2017 дата публикации

MOLDING MACHINE CYLINDER AND ITS PRODUCTION METHOD

Номер: US20170008077A1
Автор: FURUSHIMA Kiyoshi, UCHIDA Masatsugu
Принадлежит: HITACHI METALS, LTD.

A molding machine cylinder comprising a lining layer having a structure comprising 20-50% by area of tungsten carbide particles and 1-10% by area of tungsten-based metal carboboride particles in a nickel-based alloy matrix, and containing 1-7.5% by mass of Fe, can be produced by a centrifugal casting method comprising a first step of heating at higher than 1140° C. and lower than 1200° C., and a second step of heating at 1080-1140° C. after melting the raw material powder. 1. A molding machine cylinder comprising a lining layer formed on an inner surface of a steel cylinder by a centrifugal casting method;said lining layer having a structure comprising 20-50% by area of tungsten carbide particles and 1-10% by area of tungsten-based metal carboboride particles in a nickel-based alloy matrix; andsaid lining layer containing 1-7.5% by mass of Fe.2. The molding machine cylinder according to claim 1 , wherein said metal carboboride particles contain 0.5-4% by mass of C claim 1 , 0.5-6% by mass of B claim 1 , 65-85% by mass of W claim 1 , and 1-20% by mass of Ni.3. The molding machine cylinder according to claim 1 , wherein said metal carboboride particles have an average particle size of 0.5-5 μm.4. The molding machine cylinder according to claim 1 , wherein said tungsten carbide particles have an average particle size of 1.5-15 μm.5. The molding machine cylinder according to claim 1 , wherein said lining layer comprises 1.5-4% by mass of C claim 1 , 0.5-3.5% by mass of B claim 1 , 25-60% by mass of W claim 1 , 1-10% by mass of Cr claim 1 , 1-15% by mass of Co claim 1 , 0.1-3% by mass of Si claim 1 , 0.1-2% by mass of Mn claim 1 , and 0-5% by mass of Cu claim 1 , the balance being nickel and inevitable impurities.6. The molding machine cylinder according to claim 5 , wherein a matrix of said lining layer comprises 0.05-1% by mass of C claim 5 , 0.5-3% by mass of B claim 5 , 1-5% by mass of W claim 5 , 2-20% by mass of Cr claim 5 , 2-30% by mass of Co claim 5 , 0.2-5% by ...

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Номер записи: 17
08-01-2015 дата публикации

Sintered body and method of producing a sintered body

Номер: US20150010423A1
Автор: ENGLUND Sven, Garcia Jose
Принадлежит:

The present disclosure relates to a method of making a sintered cutting body having a side with binder metal capping and another side without binder metal capping. The disclosure also relates to a sintered cutting body produced according to the method. 1. A method of producing a sintered cutting body comprising the steps of:providing a body of cermet or cemented carbide comprising carbon and binder metal;providing a sintering device for sintering the body;sintering the body in a sintering process by means of the sintering device;providing the sintering process with a time range, the time range being a heating time range where temperature at a certain moment in time is either constant or rising;providing a subsequent cooling time range of the sintering process where a cooling temperature in the cooling time range is arranged at a certain moment in time to be constant or decreasing; andproviding an atmosphere comprising at least one inert gas at a pressure, at least during a first part time range of the cooling time range in order to provide decarburizing conditions, wherein a pressure in the sintering device during the first part time range fulfills the condition 100 Pa≦P≦15000 Pa, wherein at least during a second part time range, subsequent to the first part time range, a partial pressure of the binder metal is maintained higher for a side or part of a side of the body and wherein the other part of the side or other sides of the body has/have a lower partial pressure of the binder metal, such that the binder metal is evaporated, thus providing a side or part of a side with binder metal capping, and other part of a side or other sides with essentially no binder metal capping.2. The method according to claim 1 , wherein the higher partial pressure for the binder metal is achieved by contacting the side or the part of the side of the body with a tray claim 1 , thus achieving a sintered body provided with a side or part of a side comprising a surface layer of the binder ...

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Номер записи: 18
11-01-2018 дата публикации

METAL OBJECTS AND METHODS FOR MAKING METAL OBJECTS USING DISPOSABLE MOLDS

Номер: US20180009032A1
Автор: CHAN Pong Kwok, Kelkar Rajendra Madhukar, LEMAN John T., McCarren Michael John, Natarajan Arunkumar, PRABHJOT Singh
Принадлежит:

Methods of making metal objects are provided. These methods generally involve adding a metal powder slurry into a sacrificial mold, such as a mold made by three dimensional printing, and heating the slurry/mold mixture. The heating steps may include curing the slurry to make a green part inside the mold, debinding to burn off the mold and binder to make a brown part, sintering, and hot isostatic pressing. Metal products, such as aircraft engine parts, are also provided. 1. A method for making a metal object comprising:(a) introducing a metal powder slurry into a sacrificial mold; and(b) applying one or more heating steps to produce a solid metallic body and eliminate the sacrificial mold.2. The method of claim 1 , wherein the sacrificial mold is removed by heating in the range of 100-600° C.3. The method of claim 1 , wherein said metal powder slurry comprises a binder and a metal powder.4. The method of claim 3 , wherein the metal powder is a metal alloy powder.5. The method of claim 1 , wherein more than 50% of the total volume of the slurry is metal powder.6. The method of claim 1 , wherein more than 65% of the total volume of the slurry is metal powder.7. The method of claim 1 , wherein the sacrificial mold is removed by heating in a carbon-free atmosphere comprising nitrogen and oxygen.8. The method of claim 1 , further comprising (i) producing a green body and curing said green body; (ii) debinding the cured green body to produce a brown body; and (iii) sintering the brown body to prepare a metal object.9. The method of claim 8 , wherein said curing comprises heating to a temperature between 50-70° C. for 6-24 hours under nitrogen.10. The method of claim 9 , wherein said curing comprises heating to a temperature of 55° C. for 18 hours under nitrogen.11. The method of claim 10 , wherein the brown body is sintered at a temperature in the range of 1000-1600° C.12. The method of claim 1 , further comprising at least one step of hot isostatic pressing after said ...

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Номер записи: 19
27-01-2022 дата публикации

POROUS ELECTROLYZER GAS DIFFUSION LAYER AND METHOD OF MAKING THEREOF

Номер: US20220023946A1
Автор: Ballantine Arne, Karuppaiah Chockkalingam, Nguyen Dien, Nguyen James
Принадлежит:

A porous titanium sheet configured to function as an anode side gas diffusion layer of a proton exchange membrane (PEM) electrolyzer is formed by a powder technique, such as tape casting or powder metallurgy. 1. A porous titanium sheet configured to function as an anode side gas diffusion layer of a proton exchange membrane (PEM) electrolyzer , wherein the porous titanium sheet is formed by a powder technique.2. The porous titanium sheet of claim 1 , wherein a first major side of the porous titanium sheet has a higher porosity than an opposite second major side of the porous titanium sheet.3. The porous titanium sheet of claim 2 , wherein the first major side of the porous titanium sheet is configured to face an anode side flow plate claim 2 , and the second major side of the porous titanium sheet is configured to face an anode electrode.4. The porous titanium sheet of claim 2 , wherein the first major side of the porous titanium sheet has the porosity which is at least 10 percent higher than the opposite second major side of the porous titanium sheet.5. The porous titanium sheet of claim 1 , wherein a first major side of the porous titanium sheet includes a groove and an opposite second major side of the porous titanium sheet has a substantially planar surface which lacks a groove.6. The porous titanium sheet of claim 1 , wherein:the porous titanium sheet contains a titanium nitride coating on at least one surface thereof; andthe porous titanium sheet comprises pure titanium or an alloy of titanium containing more than 50 atomic percent titanium and less than 50 atomic percent of at least one of molybdenum, vanadium, niobium, tantalum, or zirconium.7. The porous titanium sheet of claim 1 , wherein the porous titanium sheet includes a bimodal pore size distribution comprising micropores having an average pore size in a range of 1 to 5 microns claim 1 , and macropores having an average pore size in a range of 30 to 40 microns.8. The porous titanium sheet of claim 1 , ...

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Номер записи: 20
12-01-2017 дата публикации

PROCESS FOR PRODUCING A TARGET FORMED OF A SINTERING-RESISTANT MATERIAL OF A HIGH-MELTING POINT METAL ALLOY, SILICIDE, CARBIDE, NITRIDE OR BORIDE

Номер: US20170009335A1
Автор: Yamakoshi Yasuhiro
Принадлежит:

A target is formed of a sintering-resistant material of high-melting point metal alloy, high-melting point metal silicide, high-melting point metal carbide, high-melting point metal nitride or high-melting point metal boride comprising a structure in which a material formed of a sintering-resistant material of high-melting point metal alloy, high-melting point metal silicide, high-melting point metal carbide, high-melting point metal nitride or high-melting point metal boride and a high-melting point metal plate other than the target are bonded. A production method of such a target is provided. Further the generation of cracks during the target production and high power sputtering, and the reaction of the target raw material with the die during hot pressing can be inhibited effectively, and the warpage of the target can be reduced. 1. A production method of a composite sputtering target including a sputtering target comprising a sintered body formed of a powder of a sinter-resistant material of an alloy of high-melting point metals or a silicide , carbide , nitride or boride of a high-melting point metal , comprising the steps of:placing a secondary plate having a thickness of 2 to 6 mm and made of a high-melting point metal different from the high-melting point metals constituting the alloy or the high melting point metal of the silicide, carbide, nitride or boride of the sputtering target in a die;filling the die with powder formed of the alloy of high-melting point metals or the silicide, carbide, nitride or boride of the high-melting point metal of the sinter-resistant material of the sputtering target, the high-melting point metal or metals of the sputtering target having a melting point of 1700° C. or higher;additionally inserting a further secondary plate made of a high-melting point metal different from the metal or metals of the sputtering target on the filled powder to obtain a trilaminar structure;subsequently subjecting the trilaminar structure to ...

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Номер записи: 21
14-01-2021 дата публикации

SYSTEMS AND METHODS FOR CREATING NANOCRYSTALLINE ALLOY ARTICLES USING ADDITIVE MANUFACTURING

Номер: US20210008619A1
Автор: Lund Alan C., Schuh Christopher A.
Принадлежит: Veloxint Corporation

Embodiments described herein relate generally to systems and methods for using nanocrystalline metal alloy particles or powders to create nanocrystalline and/or microcrystalline metal alloy articles using additive manufacturing. In some embodiments, a manufacturing method for creating articles includes disposing a plurality of nanocrystalline particles and selectively binding the particles together to form the article. In some embodiments, the nanocrystalline particles can be sintered to bind the particles together. In some embodiments, the plurality of nanocrystalline particles can be disposed on a substrate and sintered to form the article. The substrate can be a base or a prior layer of bound particles. In some embodiments, the nanocrystalline particles can be selectively bound together (e.g., sintered) at substantially the same time as they are disposed on the substrate. 123-. (canceled)24. A method , comprising:disposing a plurality of nanocrystalline metal microparticles and a binder;binding at least a portion of the nanocrystalline metal microparticles together to form a green body;applying heat to the green body during a first time period to substantially vaporize the binder and form a substantially binderless green body; andapplying heat during a second time period to sinter the substantially binderless green body to form an alloy article.25. The method of claim 24 , wherein the nanocrystalline metal microparticles are disposed onto a substrate.26. The method of claim 24 , wherein the nanocrystalline metal microparticles are disposed using an additive manufacturing process.27. The method of claim 26 , wherein the nanocrystalline metal microparticles are disposed on at least one of a substrate and at least a portion of a prior layer from the additive manufacturing process.28. The method of claim 24 , wherein the plurality of nanocrystalline metal microparticles include a first plurality of nanocrystalline microparticles comprising a first metal material ...

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Номер записи: 22
09-01-2020 дата публикации

MANUFACTURING METHOD OF GRAPHENE METAL COMPOSITE MATERIAL

Номер: US20200009653A1
Автор: Lin Tzu-Yao, SHIH Yang-Ming, TSENG Wei-Lin
Принадлежит:

A manufacturing method of a graphene metal composite material includes the steps of providing metal powder including metal particles, graphene powder including graphene pieces and binder including wax material, wherein each graphene piece includes graphene molecules connected with each other and including six carbon atoms annually connected, and one of the carbon atom of each graphene molecule is bonded with a functional group by an SP3 bond; mixing the powders and the binder into a powder material, wherein the SP3 bond is heated and broken by friction, and the graphene molecules are connected with each other via the broken SP3 bond to wrap the respective metal particles; melting and molding the powder material to form a green part; removing the binder from the green part to form a brown part; and sintering the brown part to form a metal main part embedded a three-dimensional mash formed by the graphene molecules. 1. A manufacturing method of a graphene metal composite material , comprising the following steps:a) providing metal powder, graphene powder and a binder, the metal powder comprising a plurality of metal particles, the binder comprising a wax material, the graphene powder comprising a plurality of graphene pieces, each graphene piece comprising a plurality of graphene molecules connected with each other, each graphene molecule comprising six carbon atoms annually connected with each other, one of the carbon atoms of each graphene molecule is connected with a functional group by an SP3 bond;b) mixing the metal powder, the graphene powder and the binder into a powder material, and the SP3 bond bonding each functional group being heated to broken by friction and functional groups thereby being separated from respective graphene molecules, each graphene molecule being bonded with another graphene molecule by the broken SP3 bond, and respective metal particles being thereby wrapped by the graphene molecules;c) heating the powder material to melt into a liquid ...

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Номер записи: 23
10-01-2019 дата публикации

METHOD FOR SYNTHESIZING ALUMINUM NITRIDE AND ALUMINUM NITRIDE-BASED COMPOSITE MATERIAL

Номер: US20190010053A1
Автор: HAN Kwan Hee, Kim Ju Hyun
Принадлежит: Research Cooperation Foundation of Yeungnam University

A method of synthesizing aluminum nitride, the method includes: preparing mixed powder containing 0.5 to 8 wt % of zinc powder, 0.01 to 2 wt % of magnesium powder, 0.01 to 1 wt % of silicon powder, 0.01 to 1 wt % of copper powder, and a balanced amount of aluminum powder; preparing a feedstock of the mixed powder blended and filled with thermoplastic organic binder, by pressured kneading the mixed powder and the thermoplastic organic binder; forming granules of the feedstock by crushing the feedstock or forming a molded body of the feedstock via a powder molding method; and debinding the granules or the molded body by heating under a nitrogen gas atmosphere, and then performing direct nitridation between aluminum and a nitrogen gas at a temperature higher than a debinding temperature. 1. A method of synthesizing aluminum nitride , the method comprising:preparing mixed powder containing 0.5 to 8 wt % of zinc powder, 0.01 to 2 wt % of magnesium powder, 0.01 to 1 wt % of silicon powder, 0.01 to 1 wt % of copper powder, and a balanced amount of aluminum powder;preparing a feedstock of the mixed powder blended and filled with thermoplastic organic binder, by pressured kneading the mixed powder and the thermoplastic organic binder;forming granules of the feedstock by crushing the feedstock or forming a molded body of the feedstock via a powder molding method; anddebinding the granules or the molded body by heating under a nitrogen gas atmosphere, and then performing direct nitridation between aluminum and a nitrogen gas at a temperature higher than a debinding temperature.2. The method of claim 1 , wherein an average diameter of the aluminum powder is 0.01 to 50 μm.3. The method of claim 2 , wherein an average diameter of the aluminum powder is 0.1 to 20 μm.4. The method of claim 1 , wherein an average diameter of the zinc powder claim 1 , the magnesium powder claim 1 , the silicon powder claim 1 , and the copper powder is 0.1 to 50 μm.5. The method of claim 4 , wherein ...

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Номер записи: 24
12-01-2017 дата публикации

Cu-Ga ALLOY SPUTTERING TARGET AND METHOD FOR PRODUCING SAME

Номер: US20170011895A1
Автор: Ishiyama Kouichi, Mori Satoru, Yoshida Yuuki
Принадлежит:

According to the present invention, a Cu—Ga alloy sputtering target which is a sintered body has a composition with 29.5 atom % to 43.0 atom % of Ga and a balance of Cu and inevitable impurities. A Cu—Ga alloy crystal particle in the sintered body has a structure in which γ phase particles are dispersed in a γ-phase crystal particle. A method for producing the sputtering target includes a step of performing normal pressure sintering by heating a molded body formed of a powder mixture of a pure Cu powder and a Cu—Ga alloy powder in a reducing atmosphere, and a step of cooling the obtained sintered body at a cooling rate of 0.1° C./min to 1.0° C./min, at a temperature having a range of 450° C. to 650° C. 1. A Cu—Ga alloy sputtering target , whereinthe Cu—Ga alloy sputtering target is a sintered body which has a composition with 29.5 atom % to 43.0 atom % of Ga and a balance of Cu and inevitable impurities, and{'sub': '1', 'a Cu—Ga alloy crystal particle in the sintered body has a structure in which γ phase particles are dispersed in a γ-phase crystal particle.'}2. The Cu—Ga alloy sputtering target according to claim 1 , wherein{'sub': '1', 'an average number of the γ phase particles in one γcrystal particle is 6 to 36, and'}{'sub': '1', 'an average particle diameter of γphase particles is 15.0 μm to 75.0 μm.'}3. The Cu—Ga alloy sputtering target according to claim 1 , whereinan amount of oxygen in the sintered body is equal to or less than 200 mass ppm.4. The Cu—Ga alloy sputtering target according to claim 1 , whereinthe sintered body further contains 0.05 atom % to 10.0 atom % of Na, anda Na compound phase is dispersed in the sintered body.5. The Cu—Ga alloy sputtering target according to claim 4 , wherein{'sub': 2', '2', '3', '6, 'the Na compound phase is formed of at least one of NaF, NaS, NaSe, and NaAlF.'}6. A method for producing the Cu—Ga alloy sputtering target according to claim 1 , the method comprising:a step of performing normal pressure sintering by ...

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Номер записи: 25
03-02-2022 дата публикации

MOULD POWDER AND MOULD COATING

Номер: US20220032365A1
Автор: GUILLEMIN Francois, TOUMI Mourad
Принадлежит:

The present invention relates to a mould powder for coating cast moulds for reducing surface defects, such as pinholes, in ductile cast iron products. The mould powder comprises 10-99.5% by weight of a ferrosilicon alloy, 0.5-50% by weight of iron sulphide, and optionally 1-30% by weight of CaSi, and/or 1-10% by weight of CaF. The invention further relates to a mould coating on and internal surface of a casting mould comprising 10-99.5% by weight of a ferrosilicon alloy, 0.5-50% by weight of iron sulphide, and optionally 1-30% by weight of CaSi, and/or 1-10% by weight of CaF. 1. A mould powder for coating the internal surface of one or more casting moulds , comprising10-99.5% by weight of a ferrosilicon alloy,0.5-50% by weight of an iron sulphide, and optionally1-30% by weight of CaSi alloy, and/or{'sub': '2', '1-10% by weight of CaF.'}2. Mould powder according to claim 1 , wherein the mould powder comprises from 50 to 95% by weight of ferrosilicon alloy and from 5 to 50% by weight of iron sulphide.3. Mould powder according to claim 2 , wherein the mould powder comprises from 70 to 90% by weight of ferrosilicon alloy and from 10 to 30% by weight of iron sulphide.4. Mould powder according to claim 2 , wherein the mould powder comprises from 50 to 70% by weight of ferrosilicon alloy and from 30 to 50% by weight of iron sulphide.5. Mould powder according to claim 1 , wherein the mould powder comprises30-90% by weight of a ferrosilicon alloy;0.5-30% by weight of an iron sulphide;5-30% by weight of CaSi alloy; and{'sub': '2', '1-10% by weight of CaF.'}6. Mould powder according to claim 1 , wherein the iron sulphide is FeS claim 1 , FeSor a mixture thereof.7. Mould powder according to claim 1 , wherein the ferrosilicon alloy comprises between 40% and 80% by weight of silicon; up to 6% by weight of calcium; up to 11% by weight of barium; up to 5% by weight of one or more of the elements: aluminum claim 1 , strontium claim 1 , manganese claim 1 , zirconium claim 1 , rare ...

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Номер записи: 26
19-01-2017 дата публикации

METHOD FOR REINFORCING METAL MATERIAL BY MEANS OF GRAPHENE

Номер: US20170014908A1
Автор: Dai Shenglong, Hong Qihu, Lin Zuoming, Liu Dabo, Yan Shaojiu, Yang Cheng
Принадлежит: AVIC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS

A method of reinforcing a metallic material includes adding graphene to an alcohol solution; subjecting the alcohol solution containing graphene to sonication; mixing a metal powder with the alcohol solution containing graphene; milling the metal powder and alcohol solution containing graphene mixture; drying the metal powder and alcohol solution containing graphene mixture to form a composite powder; subjecting the composite powder to a densification process followed by a hot isostatic pressing treatment to form a composite material; and molding the composite material by hot extrusion. 1. A method of reinforcing a metallic material , comprising:adding graphene to an alcohol solution;subjecting the alcohol solution containing graphene to sonication;mixing a metal powder with the alcohol solution containing graphene;milling the metal powder and alcohol solution containing graphene mixture;drying the metal powder and alcohol solution containing graphene mixture to form a composite powder;subjecting the composite powder to a densification process followed by a hot isostatic pressing treatment to form a composite material; andmolding the composite material by hot extrusion.2. The method of claim 1 , wherein the alcohol solution containing graphene is sonicated for about 30 minutes.3. The method of claim 1 , wherein a ratio of mass of metal powder added to a volume of the alcohol containing graphene solution is about 10:1 to 0.5:1.4. The method of claim 1 , wherein the densification process comprises:loading the composite powder into a sheath,vacuumizing the composite powder in the sheath; and{'sup': '−3', 'sealing the sheath by welding with the composite powder inside when the pressure reaches 1.0×10Pa.'}5. The method of claim 1 , wherein the hot isostatic pressing treatment is performed at 480° C. and 110 MPa for two hours.6. The method of claim 1 , wherein the molding by hot extrusion occurs at a temperature of 440° C. to 480° C. The present invention is a method of ...

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Номер записи: 27
19-01-2017 дата публикации

PROCESS FOR THE SYNTHESIS OF NANOSTRUCTURED METALLIC HOLLOW PARTICLES AND NANOSTRUCTURED METALLIC HOLLOW PARTICLES

Номер: US20170014913A1
Автор: BINDER Cristiano, BINDER Roberto, Drago Valderes, KLEIN Aloisio Nelmo, TONTINI Gustavo
Принадлежит: Universidade Federal de Santa Catarina - UFSC

A process for the synthesis of nanostructured metallic hollow spherical particles, in which the metal is deposited onto sacrificial masks formed in a polymeric colloidal solution by the electroless autocatalytic deposition method. Deposition releases only gaseous products (Nand H) during the oxidation thereof, which evolve without leaving contaminants in the deposit. The particulate material includes nanostructured metallic hollow spherical particles with average diameter ranging from 100 nm to 5 μm and low density with respect to the massic metal. A process for compacting and sintering a green test specimen are also described. 125.-. (canceled)27. The process according to claim 26 , wherein the sacrificial mask forming polymer comprises polyethylene glycol with average molecular mass between 1.000 and 20.000 u.28. The process according to claim 26 , wherein the sacrificial mask forming polymer comprises polyethylene glycol with molecular mass of 10 claim 26 ,000 u.29. The process according to claim 28 , wherein the concentration of the sacrificial mask forming polymer in the solution obtained in step I ranges from 1.0×10-7 to 1.0×10-2 mol/L.30. The process according to claim 29 , wherein the concentration of the polyethylene glycol in the solution obtained in step I ranges from 1.0×10-6 to 1.0×10-4 mol/L.31. The process according to claim 26 , wherein the metallic salt added in step II comprises sulfates claim 26 , chlorides claim 26 , acetates claim 26 , nitrates or mixtures thereof.32. The process according to claim 31 , wherein the concentration of the metallic salt in the solution obtained in step II ranges from 1.0×10-2 to 10.0 mol/L.33. The process according to claims 26 , wherein in that the concentration of the metallic salt in the solution obtained in step II ranges from 0.1 to 0.5 mol/L.34. The process according to claim 26 , wherein the soluble base added in step III is selected from: sodium hydroxide claim 26 , potassium hydroxide claim 26 , ammonium ...

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Номер записи: 28
18-01-2018 дата публикации

Method of Making Machine Component with Aluminum Alloy Under Temperature-Limited Forming Conditions

Номер: US20180015545A1
Автор: Fan Yajun, JENSEN JEFF A., YANG NAN
Принадлежит: CATERPILLAR INC.

A method of making a machine component includes extruding a supply of an aluminum alloy to produce an extrusion. The extrusion is formed under temperature-limited forming conditions of 275° C. or less to produce a blank. The blank is machined to at least one predetermined tolerance to produce the machine component. 1. A method of making a machine component , the method comprising:extruding a supply of an aluminum alloy to produce an extrusion;forming the extrusion under temperature-limited forming conditions of 275° C. or less to produce a blank;machining the blank to at least one predetermined tolerance to produce the machine component.2. The method of claim 1 , further comprising:producing the supply of the aluminum alloy via a rapid solidification process.3. The method of claim 2 , wherein the rapid solidification process comprises melt spinning.4. The method of claim 2 , wherein the rapid solidification process includes producing a ribbon of the aluminum alloy and chopping the ribbon of the aluminum alloy to form a plurality of flakes claim 2 , and wherein the plurality of flakes is extruded to produce the extrusion.5. The method of claim 1 , wherein the aluminum alloy includes aluminum and at least one strengthening metal.6. The method of claim 1 , wherein the aluminum alloy includes aluminum and up to 3.5 percent by weight of at least one element of a first group of elements claim 1 , the first group of elements consisting of Si claim 1 , Sc claim 1 , Ti claim 1 , V claim 1 , Cr claim 1 , Mn claim 1 , Fe claim 1 , Ni claim 1 , Cu claim 1 , Y claim 1 , Zr claim 1 , Mo claim 1 , Ce claim 1 , Nd claim 1 , Er claim 1 , Yb claim 1 , Ta claim 1 , W.7. The method of claim 6 , wherein the aluminum alloy includes between 3.5 percent and 9 percent by weight of at least one element of a second group of elements claim 6 , the second group of elements consisting of Ti and V.8. The method of claim 7 , wherein the aluminum alloy includes between 3.5 percent and 8.5 percent ...

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Номер записи: 29
17-01-2019 дата публикации

MICRO-NANO COMPOSITE POWDER DEDICATED FOR LASER REPAIR OF TINY CRACKS IN STAINLESS STEEL SURFACE

Номер: US20190015898A1
Автор: Jiang Wei, JIANG Xianfeng, LI Yinyin
Принадлежит:

A micro-nano composite powder dedicated for laser repair of tiny crack in stainless steel surface, which belongs to the technical field of laser repair and comprises 3 wt %-7 wt % of nano-WC, 0.5 wt %-2 wt % of nano-AlO, 0.2 wt %-0.8 wt % of micro-V powder and the balance of micro stainless steel powder, wherein the stainless steel powder comprises 0.08 wt % of C, 0.5 wt % of Si, 1.46 wt % of Mn, 0.03 wt % of P, 0.005 wt % of S, 19 wt % of Cr, 9.5 wt % of Ni, 0.5 wt % of Mo and the balance of Fe. The micro and nano powders are fully mixed through ball milling and further uniformly mixed after being blended with anhydrous ethanol. The composite powder provided by the present invention is particularly suitable for laser repair of tiny crack in the surface of stainless steel part with high toughness requirement. After laser repair, the composite powder can be fully fused with the substrate, the repaired layer and the substrate are metallurgically bonded at the interface with no crack or impurity, the repaired layer contains fine grains, and therefore the compactibility and fracture property of the repaired layer are improved. 1. A micro-nano composite powder dedicated for laser repair of tiny crack in stainless steel surface , wherein the composite powder comprises 3 wt %-7 wt % of nano-WC , 0.5 wt %-2 wt % of nano-AlO , 0.2 wt %-0.8 wt % of micro-V powder and the balance of micro stainless steel powder , wherein the micro and nano powders are fully mixed through ball milling and further uniformly mixed after being blended with anhydrous ethanol; the stainless steel powder comprises 0.08 wt % of C , 0.5 wt % of Si , 1.46 wt % of Mn , 0.03 wt % of P , 0.005 wt % of S , 19 wt % of Cr , 9.5 wt % of Ni , 0.5 wt % of Mo and the balance of Fe.2. A micro-nano composite powder dedicated for laser repair of tiny crack in stainless steel surface of claim 1 , wherein the nano-WC powder has a particle diameter of 50-80 nm and a purity of 99.99%.3. A micro-nano composite powder ...

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Номер записи: 30
19-01-2017 дата публикации

CARBON NANOTUBE COMPOSITE MATERIAL AND PROCESS FOR PRODUCING SAME

Номер: US20170018324A1
Автор: HANAZAKI Kenichi, SHIOMI Junichiro, SUGIYAMA Sumio, TOKUTOMI Junichirou, YANAGIMOTO Jun
Принадлежит:

A carbon nanotube composite material includes a metallic base composed of a polycrystalline substance in which a plurality of rod-shaped metallic crystal grains are oriented in a same direction and a carbon nanotube conductive path, which is composed of a carbon nanotube, and forms a conductive path allowing electricity to conduct therethrough in a longitudinal direction of the metallic base by being present in a part of grain boundaries between the rod-shaped metallic crystal grains on a transverse plane of the metallic base, and being present along the longitudinal direction of the metallic base. 1. A carbon nanotube composite material comprising:a metallic base composed of a polycrystalline substance in which a plurality of rod-shaped metallic crystal grains are oriented in a same direction; anda carbon nanotube conductive path, which is composed of a carbon nanotube, and forms a conductive path allowing electricity to conduct therethrough in a longitudinal direction of the metallic base by being present in a part of grain boundaries between the rod-shaped metallic crystal grains on a transverse plane of the metallic base, and being present along the longitudinal direction of the metallic base.2. The carbon nanotube composite material according to claim 1 , wherein the carbon nanotube conductive path is contained by 0.1 to 1 mass % with respect to the metallic base.3. A process for producing a carbon nanotube composite material claim 1 , the processing comprising:a green compact forming step of forming a powder green compact by applying a pressure to mixed powder containing metal powder and a carbon nanotube; and{'sup': '−1', 'an extrusion processing step of implementing extrusion processing for the powder green compact under vacuum atmosphere, at 400° C. or more, and at a strain rate of 0.1 to 100 s.'}4. The process for producing a carbon nanotube composite material according to claim 3 , wherein the mixed powder contains the carbon nanotube by 0.1 to 1 mass % ...

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Номер записи: 31
19-01-2017 дата публикации

Magnetic core, coil component and magnetic core manufacturing method

Номер: US20170018343A1
Автор: Kazunori Nishimura, Shin Noguchi, Toshio Mihara
Принадлежит: Hitachi Metals Ltd

A magnetic core has a structure in which alloy phases 20 each including Fe, Al, Cr and Si are dispersed and any adjacent two of the alloy phases 20 are connected to each other through a grain boundary phase 30 . In this grain boundary phase 30 , an oxide region is produced which includes Fe, Al, Cr and Si, and includes Al in a larger proportion by mass than the alloy phases 20 . This magnetic core includes Al in a proportion of 3 to 10% both inclusive by mass, Cr in a proportion of 3 to 10% both inclusive by mass, and Si in a proportion more than 1% and 4% or less by mass provided that the sum of the quantities of Fe, Al, Cr and Si is regarded as being 100% by mass; and includes Fe and inevitable impurities as the balance of the core.

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Номер записи: 32
03-02-2022 дата публикации

METAL MAGNETIC POWDER AND METHOD FOR MANUFACTURING SAME, AS WELL AS COIL COMPONENT AND CIRCUIT BOARD

Номер: US20220037066A1
Автор: ORIMO Yoko
Принадлежит:

A metal magnetic powder is constituted by metal magnetic grains that each include: a metal phase where the percentage of Fe at its center part is 98 percent by mass or higher, while the mass percentage of Fe at its contour part is lower than that at the center part; and an oxide film covering the metal phase, so as to inhibit oxidation of Fe contained in the metal phase, despite the high content percentage of Fe in the metal phase. 1. A metal magnetic powder constituted by metal magnetic grains , each comprising:a metal phase where a percentage of Fe at its center part is 98 percent by mass or higher, and a mass percentage of Fe at its contour part is lower than that at the center part; andan oxide film covering the metal phase.2. The metal magnetic powder according to claim 1 , wherein the percentage of Fe at the contour part is lower by 1 to 20 percent by mass than that at the center part.3. The metal magnetic powder according to claim 1 , wherein the percentage of Fe at the contour part is lower by 5 to 18 percent by mass than that at the center part.4. The metal magnetic powder according to claim 1 , wherein the percentage of Fe at the contour part is 80 to 85 percent by mass.5. The metal magnetic powder according to claim 1 , wherein the metal phase further contains at least one type of element selected from Si claim 1 , Cr claim 1 , Al claim 1 , Ti claim 1 , Zr claim 1 , and Mg.6. The metal magnetic powder according to claim 5 , wherein a total of percentages of Si claim 5 , Cr claim 5 , Al claim 5 , Ti claim 5 , Zr claim 5 , and Mg at the contour part is higher by at least 5 percent by mass than a total of corresponding percentages at the center part.7. The metal magnetic powder according to claim 5 , wherein a part containing more Fe than a total of mass percentages of Si claim 5 , Cr claim 5 , Al claim 5 , Ti claim 5 , Zr claim 5 , and Mg is formed in the oxide film.8. A method for manufacturing a metal magnetic powder claim 5 , including:preparing a ...

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Номер записи: 33
22-01-2015 дата публикации

MAKING NANOCRYSTALLINE MESOPOROUS SPHERICAL PARTICLES

Номер: US20150021801A1
Автор: Cai Mei, Lu Yunfeng, Sohn Hiesang, Xiao Qiangfeng
Принадлежит:

Spherical particles of one or more elemental metals and elemental carbon are prepared from a precursor in the form of a metal oleate. The metal oleate precursor is dispersed in a liquid vehicle and aerosol droplets of the dispersed precursor are formed in a stream of an inert gas. The aerosol droplets are heated in the stream to decompose the oleate ligand portion of the precursor and form spherical particles that have a mesoporous nanocrystalline structure. The open mesopores of the spherical particles provide a high surface area for contact with fluids in many applications. For example, the mesopores can be infiltrated with a hydrogen absorbing material, such as magnesium hydride, in order to increase the hydrogen storage capacity of the particles. 1. A method of making spherical particles that are a composite of one or more elemental metals , elemental carbon , and oxygen , the method comprising:forming a metal oleate precursor by reacting one or more inorganic metal salts of the one or more elemental metals with oleic acid in a basic solution;precipitating the metal oleate precursor from the solution;separating the metal oleate precursor precipitate from any by-products;forming a dispersion of the metal oleate precursor in a solvent of tetrahydrofuran;forming aerosol droplets of the dispersed precursor in a stream of an inert gas; andheating the aerosol droplets in the stream to evaporate the solvent, decompose organic material, and form spherical particles of the one or more elemental metals, elemental carbon, and oxygen having a uniform mesoporous nanocrystalline structure.2. The method of making spherical particles as recited in further comprising:heating the aerosol droplets in the stream for a sufficient amount of time so that nanocrystals of the one or more elemental metals form in the droplets, the decomposed organic material is expelled from the droplets, and the metal nanocrystals become organized into a three-dimensional network in which the ...

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Номер записи: 34
26-01-2017 дата публикации

METHOD OF MANUFACTURING NI ALLOY PART

Номер: US20170021424A1
Автор: Ikeda Shuji, TSUNO Nobuyasu
Принадлежит: IHI CORPORATION

A method of manufacturing a Ni alloy part includes a solution treatment step of solution treating a sintered compact, which is obtained by sintering and molding a precipitation hardening Ni alloy powder by metal injection molding, by allowing the sintered compact to hold at a temperature of not lower than 1050° C. but not higher than 1250° C. for one hour to five hours, followed by rapidly cooling to room temperature, where the precipitation hardening Ni alloy powder, and an aging treatment step of aging-treating the solution-treated sintered compact by allowing the solution-treated sintered compact to hold at the temperature of not lower than 600° C. but not higher than 800° C., followed by cooling to room temperature. 1. A method of manufacturing a Ni alloy part comprising:a solution treatment step of solution treating a sintered compact, which is obtained by sintering and molding a precipitation hardening Ni alloy powder by metal injection molding, by allowing the sintered compact to hold at a temperature of not lower than 1050° C. but not higher than 1250° C. for one hour to five hours, followed by rapidly cooling to room temperature, where the precipitation hardening Ni alloy powder includes Ti of 0.65% by mass to 1.15% by mass, inclusive, Al of 0.20% by mass to 0.80% by mass, inclusive, Cr of 17.00% by mass to 21.00% by mass, inclusive, Nb of 4.75% by mass to 5.50% by mass, inclusive, Mo of 2.80% by mass to 3.30% by mass, inclusive, Ni of 50.00% by mass to 55.00% by mass, inclusive, and the balance including Fe and unavoidable impurities; andan aging treatment step of aging-treating the solution-treated sintered compact by allowing the solution-treated sintered compact to hold at the temperature of not lower than 600° C. but not higher than 800° C., followed by cooling to room temperature.2. The method of manufacturing a Ni alloy part according to claim 1 , wherein in the solution treatment step claim 1 , the sintered compact is solution treated at a ...

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Номер записи: 35
26-01-2017 дата публикации

PRODUCTION OF SUBSTANTIALLY SPHERICAL METAL POWDERS

Номер: US20170021425A1
Автор: Fang Zhigang Z., Sun Pei, Xia Yang, ZHANG YING
Принадлежит:

A method for producing a substantially spherical metal powder is described. A particulate source metal includes a primary particulate and has an average starting particle size. The particulate source metal is optionally ball milled and mixed with a binder in a solvent to form a slurry. The slurry is granulated to form substantially spherical granules, wherein each granule comprises an agglomeration of particulate source metal in the binder. The granules are debinded at a debinding temperature to remove the binder from the granules forming debinded granules. The debinded granules are at least partially sintered at a sintering temperature such that particles within each granule fuse together to form partially or fully sintered solid granules. The granules can then be optionally recovered to form a substantially spherical metal powder. 1. A method for producing a substantially spherical metal or metal alloy powder comprising:providing a particulate source metal including a primary particulate and having an average starting particle size;mixing the particulate source metal with a binder and an optional solvent to form a slurry;granulating the slurry to form substantially spherical granules, wherein each granule comprises an agglomeration of particulate source metal;debinding the granules at a debinding temperature to reduce a binder content of the granules forming debinded granules;at least partially sintering the debinded granules at a sintering temperature such that particles within each granule fuse together to form partially or fully sintered granules;recovering the sintered granules to form the substantially spherical metal or metal alloy powder.2. The method of claim 1 , wherein the substantially spherical metal powder has an average final particle size from about 1 to about 1000 micrometers.3. The method of claim 1 , wherein the substantially spherical metal powder is selected from the group consisting of titanium claim 1 , zirconium claim 1 , hafnium claim 1 , ...

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Номер записи: 36
26-01-2017 дата публикации

GAMMA PRIME PRECIPITATION STRENGTHENED NICKEL-BASE SUPERALLOY FOR USE IN POWDER BASED ADDITIVE MANUFACTURING PROCESS

Номер: US20170021453A1
Автор: ENGELI Roman, Etter Thomas, MEIDANI Hossein
Принадлежит: General Electric Technology GmbH

The application relates to the technology of producing three-dimensional articles by powder-based additive manufacturing, such as selective laser melting or electron beam melting. Especially, it refers to a high oxidation resistant and high gamma-prime precipitation containing Ni-base super alloy powder on basis of IN738LC with a modified chemical composition. Such powder has the following chemical composition (in wt.-%): 15.7-16.3 Cr, 8.0-9.0 Co, 1.5-2.0 Mo, 2.4-2.8 W, 1.5-2.0 Ta, 3.2-3.7 Al, 2.2-3.7 Ti, 0.6-1.1 Nb, 0.09-0.13 C, 0.007-0.012 B, 0.0045≦Zr<0.03, 0.001≦Si<0.03, remainder Ni and unavoidable residual elements and in addition a powder size distribution between 10 and 100 μm and a spherical morphology. As an advantage nearly crack free three-dimensional articles can be produced with more productive process parameters and without complicated and time consuming variations of the addive manufacturing processes (e.g. pre-heating) and/or post processing (e.g. hot isostatic pressing HIP). 1. Nickel-base superalloy powder comprising: a high gamma-prime precipitation content for additive manufacturing of three-dimensional articles wherein the powder has the following chemical composition (in wt.-%): 15.7-16.3 Cr , 8.0-9.0 Co , 1.5-2.0 Mo , 2.4-2.8 W , 1.5-2.0 Ta , 3.2-3.7 Al , 2.2-3.7 Ti , 0.6-1.1 Nb , 0.09-0.13 C , 0.007-0.012 B , 0.0045≦Zr<0.03 , 0.001≦Si<0.03 , remainder Ni and unavoidable residual elements and wherein the powder has a powder size distribution between 10 and 100 μm and a spherical morphology.2. Nickel-base superalloy powder according to claim 1 , wherein the Si content is max. 0.02 wt.-%.3. Nickel-base superalloy powder according to claim 1 , wherein the Zr content is max. 0.02 wt.-%.4. SLM process for additive manufacturing of three-dimensional articles with a Nickel-base superalloy powder containing a high gamma-prime precipitation content for additive manufacturing of three-dimensional articles wherein the powder has the following chemical ...

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Номер записи: 37
10-02-2022 дата публикации

LITHIUM-CARBON COMPOSITE MATERIAL AND PREPARATION THEREOF

Номер: US20220040761A1
Автор: Huang Biying, Huang Richard Brian, Tang Tianwen
Принадлежит:

A lithium-carbon composite material and a preparation method thereof. The method includes preparation of a micron lithium powder dispersion, adjustment of the solid content of the micron lithium powder dispersion, preparation of a lithium-carbon mixture, and preparation of the lithium-carbon composite material. 1. A method of preparing a lithium-carbon composite material , comprising:(S1) dispersing metal lithium in an organic solvent through liquid phase buoyancy to obtain a micron lithium powder dispersion;(S2) allowing the micron lithium powder dispersion obtained in step (S1) to stand, and removing a part of the organic solvent from the micron lithium powder dispersion such that a lithium powder solid content of the micron lithium powder dispersion is 25%-35%;(S3) adding carbon powder to the micron lithium powder dispersion obtained through step (S2) followed by cyclical grinding using a sand mill to disperse the carbon powder and lithium powder evenly to obtain a mixed system, wherein a molar ratio of Li to C is (3-4):1; and(S4) allowing the organic solvent in the mixed system to evaporate such that the carbon powder in the mixed system is carried by evaporated organic solvent and then settles to cover a surface of the lithium powder to obtain the lithium-carbon composite material.2. The method of claim 1 , wherein the steps (S1)-(S4) are all performed in an argon atmosphere.3. The method of claim 2 , wherein the step (S1) is performed through steps of:cutting the metal lithium into pieces followed by continuous feeding to a liquid-phase dispersion machine with the organic solvent and stirring, wherein a weight ratio of the metal lithium to the organic solvent is 3.55:96.45; heating, by a heating device of the liquid-phase dispersion machine, a mixture of the metal lithium and the organic solvent to 180° C.-190° C. under stirring such that the metal lithium melts to form uniformly dispersed micron lithium droplets in the organic solvent; allowing a mixture of ...

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Номер записи: 38
26-01-2017 дата публикации

Structural Component that Will Fragment into Particles of Selected Geometry and Reactivity

Номер: US20170023341A1
Автор: Lunking David Michael, Weihs Timothy P.
Принадлежит:

An embodiment in accordance with the present invention provides a method for creating and consolidating fragments and a useable structure formed from said consolidated fragments. The method includes swaging a metal powder into a first consolidated structure. The consolidated structure is ground to form particles and the particles are sifted to select those with a predetermined diameter. The particles having the predetermined diameter can then be swaged into a second consolidated structure. The resultant second consolidated structure is therefore configured to fragment controllably. The second consolidated structure can also be formed from reactive metal laminates such that the structure also has chemical energy. 1. A method for forming a structural component that will fragment into particles of selected geometry and reactivity comprising:swaging a metal powder into a consolidated structure;grinding the consolidated structure into particles;sifting the particles to select particles for use having a predetermined diameter;swaging the particles having the predetermined diameter into the structural component that will fragment into particles of selected geometry and reactivity.2. The method wherein the metal powder is configured to impart the particles with the selected reactivity.3. The method of wherein the consolidated structure takes the form of a rod.4. The method of wherein the structural component takes the form of a tube.5. The method of wherein swaging the structural component further comprises reducing a cross-sectional area of the structural component by half.6. The method of wherein the predetermined diameter is between approximately 1 mm to approximately 2.3 mm.7. The method of further comprising using a rotating die for swaging the metal powder.8. The method of wherein the rotating die further comprises a progression of dies.9. The method of further comprising using a rotating die for swaging the particles having the predetermined diameter.10. The method ...

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Номер записи: 39
24-01-2019 дата публикации

Sintered sliding member having exceptional corrosion resistance, heat resistance, and wear resistance; and method for producing said member

Номер: US20190022758A1
Автор: Shinichi Takezoe, Yoshinari Ishii
Принадлежит: Diamet Corp

A sintered sliding material with excellent corrosion resistance, heat resistance, and wear resistance is provided. The sintered sliding material has a composition made of: 36-86 mass % of Ni; 1-11 mass % of Sn; 0.05-1.0 mass % of P; 1-9 mass % of C; and the Cu balance including inevitable impurities. The sintered sliding material is made of a sintered material of a plurality of grains of alloy of Ni—Cu alloy or Cu—Ni alloy, the Ni—Cu alloy and the Cu—Ni alloy containing Sn, P, C, and Si; has a structure in which pores are dispersedly formed in grain boundaries of the plurality of the grains of alloy; and as inevitable impurities in a matrix constituted from the grains of alloy, a C content is 0.6 mass % or less and a Si content is 0.15 mass % or less.

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Номер записи: 40
24-01-2019 дата публикации

Systems and Methods of Fabrication and Use of Wear-Resistant Materials

Номер: US20190022759A1
Автор: Anil Kumar, Biju Pillai KUMAR, Bradley S. IVIE, Michael D. Hughes, Russell C. Gilleylen, WEI Liu
Принадлежит: National Oilwell DHT LP

Discussed herein are systems and methods of forming hardfacing coatings and films containing Q-carbon diamond particles for use in downhole drilling tooling and other tools where wear-resistant coating is desirable. The Q-carbon diamond-containing layers may be coated with matrix material and/or disposed in a matrix to form the coating, or the Q-carbon diamond layer may be formed directly from a diamond-like-carbon on a substrate.

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Номер записи: 41
23-01-2020 дата публикации

Methods for Producing Metal Powders

Номер: US20200023440A1
Автор: Finnerty Donald, Henderson David, Koenitzer John W., Matheson Andrew, Van Lieshout Richard
Принадлежит:

A method for producing a metal powder includes maintaining molten reducing metal in a sealed reaction vessel that is free of added oxygen and water, establishing a vortex in the molten reducing metal, introducing a metal halide into the vortex so that the molten reducing metal is in a stoichiometric excess to the metal halide, thereby producing metal particles and salt, removing unreacted reducing metal, removing the salt, and recovering the metal powder. The molten reducing metal can be a Group I metal, a Group II metal, or aluminum. 1. A method for producing a metal powder , the method comprising:(a) maintaining molten reducing metal in a sealed reaction vessel that is free of added oxygen and water, the molten reducing metal comprising a Group I metal, a Group II metal, or aluminum;(b) establishing a vortex in the molten reducing metal;(c) introducing a metal halide into the vortex so that the molten reducing metal is in a stoichiometric excess to the metal halide, thereby producing metal particles and a salt;(d) removing unreacted reducing metal;(e) removing the salt; and(f) recovering the metal powder.2. The method of claim 1 , wherein the metal halide includes a chloride of tantalum claim 1 , nickel claim 1 , aluminum claim 1 , zirconium claim 1 , vanadium claim 1 , tin claim 1 , titanium claim 1 , silicon claim 1 , niobium claim 1 , and hafnium.3. The method of claim 1 , wherein the metal halide is a mixture of metal halides.4. The method of claim 2 , wherein the molten reducing metal comprises sodium.5. The method of claim 2 , wherein the molten reducing metal comprises potassium.6. The method of claim 2 , wherein the molten reducing metal comprises sodium and potassium.7. The method of claim 2 , wherein the molten reducing metal comprises magnesium.8. The method of claim 2 , wherein the molten reducing metal comprises calcium.9. The method of claim 2 , wherein the molten reducing metal comprises aluminum.10. The method of claim 2 , wherein the molten ...

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Номер записи: 42
28-01-2021 дата публикации

Tungsten Silicide Target Member And Method For Manufacturing Same, And Method For Manufacturing Tungsten Silicide Film

Номер: US20210025049A1
Автор: Asano Takayuki, Dasai Takafumi, Okabe Takeo
Принадлежит:

Provided is a tungsten silicide target that efficiently suppresses generation of particles during sputtering deposition. A tungsten silicide target having a two-phase structure of a WSiphase and a Si phase, wherein the tungsten silicide target is represented by a composition formula in an atomic ratio: WSiwith X>2.0; wherein, when observing a sputtering surface, a ratio of a total area I1 of Si grains having an area per a Si grain of 63.6 μmor more to a total area S1 of the Si grains forming the Si phase (I1/S1) is 5% or less; and wherein a Weibull modulus of flexural strength is 2.1 or more. 1. A tungsten silicide target having a two-phase structure of a WSiphase and a Si phase ,{'sub': 'x', 'wherein the tungsten silicide target is represented by a composition formula in an atomic ratio: WSiwith X>2.0;'}{'sup': '2', 'wherein, when observing a sputtering surface, a ratio of a total area I1 of Si grains having an area per a Si grain of 63.6 μmor more to a total area S1 of the Si grains forming the Si phase (I1/S1) is 5% or less; and'}wherein a Weibull modulus of flexural strength is 2.1 or more, andwherein the tungsten silicide target has an oxygen concentration of 5000 ppm by mass or less.2. The tungsten silicide target according to claim 1 , wherein claim 1 , when observing the sputtering surface claim 1 , a ratio of a total area I2 of WSigrains having an area per a WSigrain of 63.6 μmor more to a total area S2 of the WSigrains forming the WSiphase (I2/S2) is 5% or less.3. The tungsten silicide target according to claim 1 , wherein claim 1 , when observing the sputtering surface claim 1 , a ratio of a total area I2 of WSigrains having an area per a WSigrain of 63.6 μmor more to a total area S2 of the WSigrains forming the WSiphase (I2/S2) is 0.1% or less.4. The tungsten silicide target according to claim 1 , wherein claim 1 , when observing the sputtering surface claim 1 , an average area per a WSigrain is 6.0 μmor less.5. The tungsten silicide target according to ...

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Номер записи: 43
28-01-2021 дата публикации

METHOD FOR MANUFACTURING A BEVELLED STONE, PARTICULARLY FOR A HOROLOGICAL MOVEMENT

Номер: US20210026307A1
Автор: BESUTTI Bruno, MIDOL Sebastien, RETROUVEY Sebastien
Принадлежит: Comadur SA

A method and device for manufacturing a bevelled stone, particularly for a timepiece are disclosed. A precursor is produced from a mixture of at least one material in powder form with a binder. The method includes pressing the precursor so as to form a green body, using a top die and a bottom die comprising a protruding rib, sintering the green body so as to form a body of the future stone in at least one material, the body including a peripheral face and a bottom face provided with a groove, and machining the body including a substep of planning the peripheral face up to the groove, such that an inner wall of the groove forms at least a flared part of the peripheral face of the stone. 1. A method for manufacturing a bevelled stone , for a timepiece , comprising the following steps:producing a precursor from a mixture of at least one material in powder form with a binder;pressing the precursor so as to form a green body, using a top die and a bottom die comprising a protruding rib,sintering said green body so as to form a body of the future stone in said at least one material, the body comprising a peripheral face and a bottom face provided with a groove, andmachining the body including a substep of planing planning the peripheral face up to the groove, such that an inner wall of the groove forms at least a flared part of the peripheral face of the stone.2. The method according to claim 1 , wherein the machining comprises a substep of recessing a recess in the top face of the body.3. The method according to claim 1 , wherein the machining comprises a substep of cutting the top face of the body claim 1 , in order to obtain a top face giving the stone a predetermined thickness.4. The method according to claim 1 , wherein the pressing comprises the recessing of a hole blank with a punch of the bottom die.5. The method according to claim 1 , wherein the groove is embodied to be circular and/or centred on the bottom face of the body.6. The method according to claim 1 , ...

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Номер записи: 44
02-02-2017 дата публикации

ALUMINUM ALLOY POWDER FORMULATIONS WITH SILICON ADDITIONS FOR MECHANICAL PROPERTY IMPROVEMENTS

Номер: US20170028469A1
Автор: Bishop Donald Paul, Cooke Randy Willams, Donaldson Ian, Hexem Richard L.
Принадлежит: GKN Sinter Metals, LLC

An improved aluminum alloy powder metal includes silicon additions. When this improved powder metal with silicon additions is sintered to form a sintered component, the resultant component exhibits many improved mechanical strength properties and improved thermal resistance. 1. A powder metal composition comprising:an atomized aluminum powder metal in which the aluminum powder is prealloyed with a member selected from the group consisting of iron separately, nickel separately, and iron and nickel together;a first master alloy powder metal comprising aluminum and copper;a second master alloy powder metal comprising aluminum and silicon;a first elemental powder metal comprising magnesium; anda second elemental powder metal comprising tin.2. The powder metal of claim 1 , wherein the second master alloy comprising aluminum and silicon is an Al-12Si master alloy.3. The powder metal of claim 1 , wherein the first master alloy powder metal comprising aluminum and copper is an Al-50Cu master alloy claim 1 , wherein the second master alloy comprising aluminum and silicon is an Al-12Si master alloy claim 1 , and wherein the first and second elemental powder metals are high purity elemental powder metals.4. The powder metal of claim 1 , wherein the powder metal composition includes 2.3 weight percent copper claim 1 , 1.6 weight percent magnesium claim 1 , 0.2 weight percent tin claim 1 , and 0.2 weight percent silicon.5. The powder metal of claim 4 , wherein the powder metal composition includes 1.0 weight percent iron claim 4 ,6. The powder metal of claim 4 , wherein the powder metal composition includes 1.0 weight percent nickel.7. The powder metal of claim 4 , wherein the powder metal composition includes 1.0 weight percent iron and 1.0 weight percent nickel.8. The powder metal of claim 1 , wherein the powder metal composition includes 1.5 weight percent admixed Licowax C powder.9. The powder metal of claim 1 , wherein the weight percent of silicon in the powder metal ...

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Номер записи: 45
02-02-2017 дата публикации

POROUS ALUMINUM SINTERED COMPACT AND METHOD OF PRODUCING POROUS ALUMINUM SINTERED COMPACT

Номер: US20170028473A1
Автор: Hoshino Koji, Katoh Jun, Kita Koichi, Saiwai Toshihiko, Yang Ji-bin
Принадлежит:

A high-quality porous aluminum sintered compact, which can be produced efficiently at a low cost; has an excellent dimensional accuracy with a low shrinkage ratio during sintering; and has sufficient strength, and a method of producing the porous aluminum sintered compact are provided. The porous aluminum sintered compact is the porous aluminum sintered compact that includes aluminum substrates sintered each other. The junction, in which the aluminum substrates are bonded each other, includes the Ti—Al compound and the eutectic element compound capable of eutectic reaction with Al. It is preferable that the pillar-shaped protrusions projecting toward the outside are formed on outer surfaces of the aluminum substrates, and the pillar-shaped protrusions include the junction. 1. A porous aluminum sintered compact comprising a plurality of aluminum substrates sintered each other , wherein a junction , in which the plurality of aluminum substrates are bonded each other , includes a Ti—Al compound and a eutectic element compound including a eutectic element capable of eutectic reaction with Al.2. The porous aluminum sintered compact according to claim 1 , wherein a plurality of pillar-shaped protrusions projecting toward an outside is formed on outer surfaces of the aluminum substrates claim 1 , and the pillar-shaped protrusions include the junction.3. The porous aluminum sintered compact according to claim 1 , wherein the aluminum substrates are made of any one of or both of aluminum fibers and an aluminum powder.4. The porous aluminum sintered compact according to claim 1 , wherein a porosity of the porous aluminum sintered compact is in a range of 30% or more and 90% or less.5. A method of producing a porous aluminum sintered compact including a plurality of aluminum substrates sintered each other claim 1 , the method comprising the steps of:forming an aluminum raw material for sintering by adhering a titanium powder, which is made of any one of or both of a titanium ...

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Номер записи: 46
02-02-2017 дата публикации

METHOD FOR MANUFACTURING MICROPORE FILTER

Номер: US20170028474A1
Автор: Igarashi Nozomi, Katano Miyabi, MIURA Toshio, Nakajima Hidetoshi
Принадлежит: Pureron Japan Co., Ltd.

Provided is a method for manufacturing a micropore filter usable as SCE. Stainless steel particles having particle diameters of 3 to 60 μm are subjected to milling in a bead mill using zirconia beads to prepare powder having a flakiness of 0.03 to 0.4. The zirconia adhered to the surface of the powder is removed by pickling. A load of 10 to 15 kN is applied to 0.5 to 1.0 g of the pickled powder, thereby compacting the powder into a columnar compact body. The compact body is kept and fired in a vacuum atmosphere of 10to 10Pa at a temperature of 1000 to 1300° C. for 1 to 3 hours to form a sintered body. The sintered body is pressed into a pipe having an inner diameter of 0.90 to 0.99 times of the outer diameter of the sintered body, and extruded to obtain a micropore filter. 1a step of treating stainless steel particles having particle diameters in a range of 3 to 60 μm in a bead mill using zirconia beads to prepare powder having a flakiness expressed by a ratio of a thickness with respect to a long diameter (thickness/long diameter) in a range of 0.03 to 0.4;a step of pickling the powder to remove zirconia adhered to a surface of the powder due to treatment in the bead mill;a step of applying a load of 10 to 15 kN to 0.5 to 1.0 g of the powder after the pickling, thus compacting the powder to obtain a compact body having a columnar shape;{'sup': −5', '−3, 'a step of keeping the compact body in a vacuum atmosphere in a range of 10to 10Pa at a temperature in a range of 1000 to 1300° C. for 1 to 3 hours, thus firing the compact body to obtain a sintered body; and'}a step of pressing the sintered body into a pipe having an inner diameter in a range of 0.90 to 0.99 times of an outer diameter of the sintered body, and extruding the sintered body.. A method for manufacturing a micropore filter comprising: The present invention relates to a method of manufacturing a micropore filter used for calibration of vacuum gauges such as ionization vacuum gauges and diaphragm vacuum ...

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Номер записи: 47
02-02-2017 дата публикации

SURFACE MODIFIED PARTICULATE AND SINTERED OR INJECTION MOLDED PRODUCTS

Номер: US20170028475A1
Автор: Heikkila Kurt
Принадлежит:

Disclosed are interfacially modified particulate and polymer composite material for use in injection molding processes, such as metal injection molding and additive process such as 3D printing. The composite material is uniquely adapted for powder metallurgy processes. Improved products are provided under process conditions through surface modified powders that are produced by extrusion, injection molding, additive processes such as 3D printing, Press and Sinter, or rapid prototyping. 124-. (canceled)25. A method of making an object with an additive manufacturing system , the method comprises depositing a filament , with the system comprising a digitally controlled applicator , in a controlled x-y plane with subsequent z-direction filament application to obtain a preform object; the filament comprising about 70 to 1 wt. % of a thermoplastic polymer; andabout 99 to 30 wt. % of a particulate, dispersed in the polymer, the particulate having a particle size of less than 500 microns, and an exterior coating of interfacial modifier in an amount of about 0.02 to 2.0 wt. %, all percentages based on the weight of the composite; andsintering the preform object to remove the polymer and bond the particulate forming the object; wherein the particulate comprises a metal alloy particle, a ceramic particle, a bi-metal particle or blends thereof.26. The method of wherein the ceramic particle is a tungsten carbide.27. The method of wherein the alloy particle is a stainless steel.28. The method of wherein the ceramic particle is a glass sphere.29. The method of wherein the glass sphere is a hollow sphere.30. The method of wherein the glass sphere is a solid sphere.31. The method of wherein the bi-metal particle comprises at least two of copper claim 25 , iron claim 25 , nickel claim 25 , tungsten or molybdenum.32. The method of wherein the preform is mechanically shaped prior to sintering.33. The method of wherein the preform object is sintered at a temperature greater than about ...

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Номер записи: 48
23-01-2020 дата публикации

ELECTRICAL CONTACT ALLOY FOR VACUUM CONTACTORS

Номер: US20200027668A1
Автор: Balasubramanian Ganesh Kumar, CAMPBELL LOUIS GRANT, ROSENKRANS BENJAMIN ALEX
Принадлежит: Eaton Intelligent Power Limited

An improved electrical contact alloy, useful for example, in vacuum interrupters used in vacuum contactors is provided. The contact alloy according to the disclosed concept comprises copper particles and chromium particles present in a ratio of copper to chromium particles of 2:3 to 20:1 by weight. The electrical contact alloy also comprises particles of a carbide, which reduces the weld break strength of the electrical contact alloy without reducing its interruption performance. 1. A method of making an electrical contact for use in a vacuum interrupter comprising:milling carbide particles to a desired size;providing copper and chromium particles that are larger in size than the milled carbide particles;mixing the milled carbide particles with the copper and chromium particles, present in a ratio of copper to chromium particles at 2:3 to 20:1 by weight;pressing the mixture into a compact; and,heating the compact to a temperature appropriate to a sintering process selected from the group consisting of solid state sintering, liquid phase sintering, spark plasma sintering, vacuum hot pressing, and hot isostatic pressing, such that the compact attains the properties suitable for use as a vacuum interrupter contact.2. The method recited in further comprising forming an electrical contact of a desired configuration by machine shaping the dense blank.3. The method recited in wherein the process is a sintering process and the method further comprises adding to the mixture a sinter activation element to increase the density of the compact upon sintering.4. The method recited in wherein the sinter activation element is selected from the group consisting of cobalt claim 3 , nickel claim 3 , nickel-iron claim 3 , iron aluminide claim 3 , and combinations thereof.5. The method recited in wherein the process is a sintering process claim 1 , and the temperature is between 1085° C. and 1200° C.6. The method recited in wherein the carbide particles are selected from the group ...

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Номер записи: 49
01-02-2018 дата публикации

Uniform Dispersing of Graphene Nanoparticles in a Host

Номер: US20180030277A1
Автор: Lei Zhai, Matthew MCINNIS
Принадлежит: University of Central Florida Research Foundation Inc UCFRF

The present invention includes a simple, scalable and solventless method of dispersing graphene into polymers, thereby providing a method of large-scale production of graphene-polymer composites. The composite powder can then be processed using the existing techniques such as extrusion, injection molding, and hot-pressing to produce a composites of useful shapes and sizes while keeping the advantages imparted by graphene. Composites produced require less graphene filler and are more efficient than currently used methods and is not sensitive to the host used, such composites can have broad applications depending on the host's properties.

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Номер записи: 50
31-01-2019 дата публикации

Composition of particulate materials and process for obtaining self-lubricating sintered products

Номер: US20190030607A1
Автор: Aloisio Nelmo Klein, Cristiano Binder, Gisele Hammes, Moises Luiz Parucker, Roberto Binder, Waldyr Ristow Junior
Принадлежит: LupaTech SA, Universidade Federal de Santa Catarina UFSC, Whirlpool SA

The metallurgical composition comprises a main particulate metallic material, for example iron or nickel, and at least one alloy element for hardening the main metallic material, which form a structural matrix; a particulate solid lubricant, such as graphite, hexagonal boron nitride or mixture thereof; and a particulate alloy element which is capable of forming, during the sintering of the composition conformed by compaction or by injection molding, a liquid phase, agglomerating the solid lubricant in discrete particles. The composition may comprise an alloy component to stabilize the alpha-iron matrix phase, during the sintering, in order to prevent the graphite solid lubricant from being solubilized in the iron. The invention further refers to the process for obtaining a self-lubricating sintered product.

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Номер записи: 51
05-02-2015 дата публикации

SYSTEM AND METHOD OF FORMING NANOSTRUCTURED FERRITIC ALLOY

Номер: US20150033912A1
Автор: Alinger Matthew Joseph, Dial Laura Cerully, DiDomizio Richard, Huang Shenyan
Принадлежит: GENERAL ELECTRIC COMPANY

A system for mechanical milling and a method of mechanical milling are disclosed. The system includes a container, a feedstock, and milling media. The container encloses a processing volume. The feedstock and the milling media are disposed in the processing volume of the container. The feedstock includes metal or alloy powder and a ceramic compound. The feedstock is mechanically milled in the processing volume using metallic milling media that includes a surface portion that has a carbon content less than about 0.4 weight percent. 1. A system , comprising:a container enclosing a processing volume;a feedstock comprising metal or alloy powder and a ceramic compound in the processing volume; anda metallic milling media disposed in the processing volume,wherein the metallic milling media comprises a surface portion having a carbon content less than about 0.4 weight percent.2. The system of claim 1 , wherein the ceramic compound comprises an oxide claim 1 , carbide claim 1 , nitride claim 1 , boride claim 1 , or any combinations thereof.3. The system of claim 1 , wherein a concentration of the ceramic compound is less than about 8 wt % of the the feedstock.4. The system of claim 3 , wherein the concentration of the ceramic compound is in a range from about 0.05 wt % to about 4 wt %.5. The system of claim 1 , wherein the metallic milling media comprises a ferrous alloy.6. The system of claim 5 , wherein the metallic milling media comprises a martensitic matrix.7. The system of claim 5 , wherein the metallic milling media comprises a bainitic matrix.8. The system of claim 1 , wherein the surface portion of the metallic milling media has a toughness greater than about 10 MPa m.9. The system of claim 1 , wherein a carbon content of an interior portion of the milling media is substantially same as that of the carbon content of the surface portion.10. The system of claim 9 , wherein a Rockwell hardness of the milling media is greater than about 40 HRC.11. The system of claim 1 ...

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Номер записи: 52
02-02-2017 дата публикации

SmCo-BASED RARE EARTH SINTERED MAGNET

Номер: US20170032876A1
Автор: Akira Sato, Ayumu Suto, Kazuya Nakamura, Kinya Odagiri, Kouji Oki, Motoichi Nakamura, Shingo Suzuki, Takeshi Kogawa, Tomoyuki Kugo
Принадлежит: Namiki Precision Jewel Co Ltd

To provide an SmCo-based rare earth sintered magnet having a small diameter and a multipolar magnetized magnetic structure and having a high coercive force and a high magnetization rate. The outer shape of an SmCo-based rare earth sintered magnet having a coercive force HCJ (kOe) at a room temperature (° C.) of 7.5 (kOe)<HCJ≦27 (kOe) is formed into any one of a cylindrical shape, a ring-like shape, a columnar shape, and a disk-like shape. Multi-pole magnetization is performed on the SmCo-based rare earth sintered magnet so as to satisfy (diameter D/the number of poles p) (mm)<(4/π) (mm) (p is an even number equal to or greater than 4), and the magnetization rate is set to 80(%) or more.

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Номер записи: 53
04-02-2021 дата публикации

METHOD FOR MANUFACTURING MATERIAL POWDER FOR METAL LAMINATING MODELLING

Номер: US20210031270A1
Автор: MURANAKA Katsutaka
Принадлежит: SODICK CO., LTD.

Provided is a method for manufacturing material powder for metal laminating modelling, in which a virgin material is manufactured based on the particle size distribution of the virgin material being an unused material powder, and the fluidity of an unsintered reused material after the virgin material is reused a predetermined number of times by a metal laminating modelling device, so that the particle size distribution of the virgin material corresponds to the fluidity of the reused material that is equal to or greater than a predetermined standard value. Silica particles may be added to the virgin material. 1. A method for manufacturing material powder for metal laminating modelling , wherein the material powder for metal laminating modelling is manufactured based onthe particle size distribution of a virgin material being the material powder that is unused, andthe fluidity of a reused material being the material powder that is unsintered, wherein the fluidity of the reused material is obtained after implementing a durability test in which the virgin material is reused a predetermined number of times in a manner that the virgin material is supplied to a metal laminating modelling device and then the reused material discharged from the metal laminating modelling device is recovered, subsequently, the reused material is supplied to the metal laminating modelling device and the reused material discharged from the metal laminating modelling device is recovered,so that the particle size distribution corresponds to the fluidity of the reused material being equal to or greater than a predetermined standard value of the fluidity.2. The method for manufacturing material powder for metal laminating modelling according to claim 1 , whereinthe durability test is implemented without performing laminating modelling.3. The method for manufacturing material powder for metal laminating modelling according to claim 1 , whereinthe fluidity is obtained based on a discharge time from ...

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Номер записи: 54
17-02-2022 дата публикации

METHOD FOR ASSEMBLING A METAL PART AND A CERAMIC PART, AND ELECTRICAL DEVICE, IN PARTICULAR A CAPACITIVE SENSOR, PRODUCED BY SAID METHOD

Номер: US20220051848A1
Автор: RUFFINI Jean-Pierre, VALAT Mathieu
Принадлежит:

A method for the assembly of a metal part and a ceramic part, including the following steps: 1. A method for the assembly of a metal part and a ceramic part , comprising the following steps:supplying a solid ceramic part of the alumina type;supplying a solid metal part, the metal being selected from platinum and tantalum, or an alloy comprising a majority of one of these metals;depositing at least one layer, called interface layer, on at least one of the solid parts, the interface layer containing magnesium oxide;bringing into contact the solid metal part and the solid ceramic part such that the interface layer is located between the solid parts; andhot densification under pressure of the solid parts brought into contact, in order to create a close bond between the solid parts and to form a spinel from the interface layer.2. The method according to claim 1 , characterized in that it comprises a step of supplying a solid part from an alloy comprising a majority of platinum claim 1 , and one of the following components: rhodium (Rh) claim 1 , iridium (Ir) claim 1 , aluminium (Al) claim 1 , gold (Au).3. The method according to claim 1 , characterized in that it comprises a step of supplying a solid ceramic part of the alumina type of with purity over 99.5%.4. The method according to claim 1 , characterized in that it further comprises the following steps:encapsulating the metal and ceramic parts brought into contact before the step of hot densification under pressure; andremoving the capsule after the step of hot densification under pressure.5. The method according to claim 1 , characterized in that any one of the steps of supplying a solid part comprises one of the following steps:preforming powder by cold pressing to form a solid part; ormachining of a solid part.6. The method according to claim 5 , characterized in that the step of preforming powder is followed by a sintering step.7. The method according to claim 1 , characterized in that the step of hot ...

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Номер записи: 55
04-02-2021 дата публикации

BINDERS FOR MILLING TOOLS USING WURTZITE BORON NITRIDE (W-BN) SUPERHARD MATERIAL

Номер: US20210034029A1
Автор: Badran Mohammed, Moellendick Timothy E., Zhan Guodong
Принадлежит: Saudi Arabian Oil Company

Systems and methods include a computer-implemented method for manufacturing a binder for spraying onto tools. A binder is manufactured for binding compacts onto a tool substrate. The binder is designed to provide a coating strength on the tool substrate. The binder includes: a metal selected from iron (Fe), cobalt (Co), and nickel (Ni); an alloy including the metal selected from Fe, Co, and Ni; or a refractory alloy selected from tungsten, tantalum (Ta), molybdenum (Mo), and niobium (Nb). An ultra-high-pressure, high-temperature operation is performed on pure wurtzite boron nitride (w-BN) powder to synthesize w-BN and cubic boron nitride (c-BN) compact. A binder-compact mixture is produced by turbulently mixing the binder with the compact in a mixer within a vacuum. The binder-compact mixture is thermally sprayed onto a tool substrate to coat the tool. 1. A computer-implemented method to form a tool for oil and gas application , the method comprising: a metal selected from iron (Fe), cobalt (Co), and nickel (Ni);', 'an alloy including the metal selected from Fe, Co, and Ni; or', 'a refractory alloy selected from tungsten (W), tantalum (Ta), molybdenum (Mo), and niobium (Nb);, 'manufacturing a binder for binding compacts onto a tool substrate and providing a coating strength on the tool substrate, the binder comprisingperforming an ultra-high-pressure, high-temperature operation on pure wurtzite boron nitride (w-BN) powder to synthesize w-BN and cubic boron nitride (c-BN) compact;producing a binder-compact mixture by turbulently mixing the binder with the compact in a mixer within a vacuum; andthermally spraying the binder-compact mixture onto a tool substrate to coat the tool.2. The computer-implemented method of claim 1 , wherein the binder comprises an active brazing alloy (ABA) used for coating ultra-strong polycrystalline diamond compact (PDC) cutters claim 1 , wherein active metal brazing using the ABA bonds superhard PDC cutting materials directly to tungsten ...

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Номер записи: 56
30-01-2020 дата публикации

METHOD OF CREATING A MAGNET

Номер: US20200035412A1
Автор: Baker Sarah E., Mccall Scott K., MENDOZA-GARCIA Adriana, SHEN BO, Sun Shouheng
Принадлежит:

A method of stabilizing soft particles to create dried nanocomposite magnets includes coating a plurality of soft particles with a layer of SiO, the soft particles being nanoparticles, creating a composite by mixing the soft particles with hard phase via a solution phase based assembly, annealing the composite, washing the composite with an alkaline solution to remove SiO, and compacting the composite to create dried nanocomposite magnets. 1. A method of stabilizing soft particles to create dried nanocomposite magnets comprising:{'sub': '2', 'coating a plurality of soft particles with a layer of SiO, the soft particles being nanoparticles;'}creating a composite by mixing the soft particles with hard phase via a solution phase based assembly;annealing the composite;{'sub': '2', 'washing the composite with an alkaline solution to remove SiO; and'}compacting the composite to create dried nanocomposite magnets.2. The method of wherein the soft particles include at least one of the following: Fe claim 1 , Co claim 1 , and FeCo.3. The method of wherein the hard phase includes at least one of the following:SmCo based compound; or NdFeB based compound.4. The method of wherein the hard phase includes at least one of the following:SmCo—O; NdFeN-0; SmCo metal alloy; or NdFeB metal alloy.5. The method of wherein the step of annealing the composite includes mixing the nanocomposites with Ca in a reducing atmosphere.6. The method of wherein the reducing atmosphere includes Argon and 4% hydrogen.7. The method of wherein the step of annealing the composite is done at substantially 850 degrees Celsius.8. The method of wherein the alkaline solution is an aqueous solution of NaOH or KOH.9. The method of wherein the solution phase based assembly includes SiOcoated hard magnetic particles.10. A method of stabilizing soft particles for generating a nanocomposite for a magnet comprises:{'sub': 2', '2', '2, 'assembling a pre-synthesized Fe nanoparticles which are coated with SiO(silica) ...

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Номер записи: 57
09-02-2017 дата публикации

Metal Magnetic Material And Electronic Component

Номер: US20170040093A1
Автор: Yamamoto Makoto
Принадлежит:

Provided are: a metal magnetic material capable of reliably establishing insulation while realizing high saturation magnetic flux density; and an electronic component using the metal magnetic material and having low loss and good DC superimposition characteristics. The metal magnetic material for forming a component body of the electronic component comprises a metal magnetic alloy powder consisting of iron and silicon or containing iron, silicon and chromium; and an additional element added to the metal magnetic alloy powder, wherein the additional element is more easily oxidizable in the equilibrium state of oxidation-reduction reaction than the elements contained in the metal magnetic alloy powder. The component body () is internally formed with a coil pattern consisting of a plurality of coil conductor patterns (A to C). The metal magnetic material is less likely to undergo degradation in magnetic properties even after it is subjected to a heat treatment at a high temperature, so that it becomes possible to perform a heat treatment for reducing a resistance of the coil pattern, at an adequate temperature. 1. A metal magnetic material comprising a metal magnetic alloy powder containing iron and silicon , and an additional element added to the metal magnetic alloy powder , wherein the additional element is more easily oxidizable in an equilibrium state of oxidation-reduction reaction than the elements contained in the metal magnetic alloy powder.2. The metal magnetic material as recited in claim 1 , wherein the metal magnetic alloy powder further contains chromium.3. The metal magnetic material as recited in claim 1 , wherein the metal magnetic alloy powder consists of iron and silicon.4. The metal magnetic material as recited in claim 1 , wherein the additional element which is more easily oxidizable in an equilibrium state of oxidation-reduction reaction than the elements contained in the metal magnetic alloy powder is lithium.5. The metal magnetic material as ...

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Номер записи: 58
06-02-2020 дата публикации

IRON-BASED NANOPARTICLES AND GRAINS

Номер: US20200038951A1
Автор: Jiang Yanfeng, Liu Jinming, Ma Bin, Wang Jian-Ping, Wu Yiming
Принадлежит:

Example nanoparticles may include an iron-based core, and a shell. The shell may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example alloy compositions may include an iron-based grain, and a grain boundary. The grain boundary may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example techniques for forming iron-based core-shell nanoparticles may include depositing a shell on an iron-based core. The depositing may include immersing the iron-based core in a salt composition for a predetermined period of time. The depositing may include milling the iron-based core with a salt composition for a predetermined period of time. Example techniques for treating a composition comprising core-shell nanoparticles may include nitriding the composition. 1. A nanoparticle comprising:an iron-based core; anda shell, wherein the shell comprises an anti-ferromagnetic material.2. The nanoparticle of claim 1 , wherein the iron-based core comprises at least one of elemental iron claim 1 , an iron nitride claim 1 , α″-FeN claim 1 , or α′-Fe(Co)(N).3. The nanoparticle of claim 1 , wherein the shell comprises at least one of manganese nitride or ferromanganese.4. The nanoparticle of claim 1 , wherein the core has a major dimension between about 20 nm and about 100 nm.5. The nanoparticle of claim 1 , wherein the shell has a thickness between about 1 nm and about 10 nm.6. The nanoparticle of claim 1 , wherein the core is an ellipsoid with a ratio of a maximum diameter to a minimum diameter of at least about 2.7. (canceled)8. (canceled)9. (canceled)10. A bulk magnetic material comprising a plurality of the nanoparticles of .11. An alloy composition comprising:an iron-based grain; anda grain boundary, wherein the grain boundary comprises an anti-ferromagnetic material.12. The alloy composition of claim 11 , wherein the iron-based grain comprises at least one of elemental iron claim 11 , iron nitride claim 11 , α″-FeN claim 11 , or α′-Fe(Co)(N). ...

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Номер записи: 59
06-02-2020 дата публикации

SINTERED FRICTION MATERIAL

Номер: US20200038959A1
Автор: Asabe Kazutaka, ISHIMOTO Fumio, KANDA Osamu, KAWASAKI Kazumichi, Kubota Manabu, MIZUI Naomitsu, Nakano Satoru, Nakano Takeshi, SHIMAZOE Isao
Принадлежит:

A sintered friction material is formed by pressure sintering mixed powder at 800° C. or above, the mixed powder consisting of, in mass %, Cu and/or Cu alloy: 40.0 to 80.0%, Ni: 0% or more and less than 5.0%, Sn: 0 to 10.0%, Zn: 0 to 10.0%, VC: 0.5 to 5.0%, Fe and/or Fe alloy: 2.0 to 40.0%, lubricant: 5.0 to 30.0%, metal oxide and/or metal nitride: 1.5 to 30.0%, and the balance being impurity. 1. A sintered friction material formed by pressure sintering mixed powder at 800° C. or above , the mixed powder consisting of , in mass %:Cu and/or Cu alloy: 40.0 to 80.0%;Ni: 0% or more and less than 5.0%;Sn: 0 to 10.0%;Zn: 0 to 10.0%;VC: 0.5 to 5.0%;Fe and/or Fe alloy: 2.0 to 40.0%;lubricant: 5.0 to 30.0%;metal oxide and/or metal nitride: 1.5 to 30.0%; andthe balance being impurity.2. The sintered friction material according to claim 1 , whereinthe lubricant contains one or more kinds selected fromgraphite: 5.0 to 15.0%,hexagonal boron nitride: 3.0% or less,molybdenum disulfide: 3.0% or less,mica: 3.0% or less, andone or more kinds selected from tungsten disulfide, iron sulfide, chromium sulfide, copper sulfide, and copper matte: 10.0% or less.3. The sintered friction material according to claim 1 , whereinthe metal oxide and/or metal nitride includes one or more kinds selected from magnesia, zircon sand, silica, zirconia, mullite, and silicon nitride.4. The sintered friction material according to claim 1 , whereinthe Fe alloy includes one or more kinds selected from ferrochromium, ferrotungsten, ferromolybdenum, and stainless steel.5. The sintered friction material according to claim 2 , whereinthe metal oxide and/or metal nitride includes one or more kinds selected from magnesia, zircon sand, silica, zirconia, mullite, and silicon nitride.6. The sintered friction material according to claim 2 , whereinthe Fe alloy includes one or more kinds selected from ferrochromium, ferrotungsten, ferromolybdenum, and stainless steel.7. The sintered friction material according to claim ...

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Номер записи: 60
18-02-2021 дата публикации

IRON BASED POWDER

Номер: US20210046543A1
Автор: Engstrom Ulf, LARSSON Caroline, Szabo Christophe
Принадлежит: Höganas AB (publ)

Disclosed is a new diffusion-bonded powder consisting of an iron powder having 1-5%, preferably 1.5-4% and most preferabiy 1.5-3.5% by weight of copper particles diffusion bonded to the surfaces of the iron powder particles. The new diffusion bonded powder is suitable for producing components having high sintered density and minimum variation in copper content. 1. An iron based powder consisting of particles of reduced copper oxide diffusion bonded to the surface of an atomized iron powder , wherein the content of copper is 1-5%-by weight of the iron based powder.2. The iron based powder according to claim 1 , wherein the maximum particle size is 250 μm claim 1 , at least 75% is below 150 μm and at most 30% is below 45 μm claim 1 , the apparent density is at least 2.70 g/cm3 and the oxygen content is at most 0.16% by weight and other compounds at most 1% by weight.3. The iron based powder according to having a SSF-factor of at most 2.0 claim 2 , wherein the SSF-factor is defined as the quotation between the Cu content in weight % in the fraction of the iron based powder which passes a 45 μm sieve and the Cu content in weight % in the fraction of the iron based powder which does not pass a 45 μm sieve.4. The iron based powder according to claim 1 , wherein the maximum copper content in a cross section of a sintered component made from said iron based powder is at most 100% higher than the nominal copper content claim 1 , wherein the sintered component is produced by mixing said iron-based powder with 0.5% of graphite claim 1 , having a particle size claim 1 , ×90 claim 1 , of at most 15 μm measured with laser diffraction according to ISO 13320:1999 claim 1 , and 0.9% of lubricant and the obtained mixture is transferred into a compaction die for production of tensile strength samples (TS-bars) according to ISO 2740: 2009 and subjected to a compaction pressure of 600 MPa and the compacted sample is thereafter ejected from the compaction die and subjected to a sintering ...

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Номер записи: 61
16-02-2017 дата публикации

WEAR RESISTANT COMPONENT AND DEVICE FOR MECHANICAL DECOMPOSITION OF A MATERIAL PROVIDED WITH SUCH A COMPONENT

Номер: US20170043347A1
Автор: BERGLUND Tomas, Fischer Udo
Принадлежит:

A wear resistant component for comminution of particulate material includes a steel body and a leading portion of cemented carbide attached to a front portion of the steel body. The wear resistant component includes a wear resistant coating of a metal matrix composite attached to at least one face of the steel body connected to the leading portion. 1. A wear resistant component for comminution of particulate material , comprising:a steel body having a front portion and a leading portion of cemented carbide attached to the front portion of said steel body; anda wear resistant coating of a metal matrix composite attached to at least one face of said steel body connected to said leading portion, wherein the wear resistant coating is formed by consolidation of a powder mixture and by metallurgically bonding said powder mixture to the steel body by means of Hot Isostatic Pressing.2. A wear resistant component according to claim 1 , wherein said metal matrix composite is selected from a nickel-based metal matrix composite claim 1 , a cobalt-based metal matrix composite claim 1 , and an iron-based metal matrix composite.3. A wear resistant component according to claim 1 , wherein particles of tungsten carbide are distributed as discrete non-interconnecting particles in the matrix of metal-based alloy.4. A wear resistant component according to claim 1 , wherein said metal matrix composite includes particles of tungsten carbide and a matrix of a nickel-based alloy claim 1 , wherein the nickel-based alloy consists of: 0-1.0 wt % C; 5-14.0 wt % Cr; 0.5-4.5 wt % Si; 1.25-3.0 wt % B; 1.0-4.5 wt % Fe; balance Ni and unavoidable impurities.5. A wear resistant component according to claim 1 , wherein the metal matrix composite includes particles of tungsten carbide and a matrix of a cobalt-based alloy claim 1 , wherein the cobalt-based alloy consists of: 20-35 wt % Cr claim 1 , wt % W claim 1 , 0-15 wt % Mo claim 1 , wt % Fe claim 1 , 0-5 Ni claim 1 , 0.05-4 wt % C and balance Co ...

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Номер записи: 62
16-02-2017 дата публикации

MATERIAL AND PROCESSES FOR ADDITIVELY MANUFACTURING ONE OR MORE PARTS

Номер: US20170043395A1
Автор: Dardas Zissis A., Eastman Scott A., Klecka Michael A., Nardi Aaron T., She Ying
Принадлежит:

Material is provided for forming a part using a manufacturing system. The material includes a plurality of discrete particles. Each of the particles includes a metal powder core encapsulated by a non-metal coating. At least the cores of the particles are adapted to be solidified together by the manufacturing system to form the part. 1. Material for forming a part using a manufacturing system , the material comprising:a plurality of discrete particles, each of the particles including a metal powder core encapsulated by a non-metal coating;wherein at least the cores of the particles are adapted to be solidified together by the manufacturing system to form the part.2. The material of claim 1 , wherein the metal powder core of one of the particles comprises a degassed metal powder core.3. The material of claim 1 , wherein the coating of one of the particles is adapted to prevent the core from adsorbing moisture.4. The material of claim 1 , wherein the coating of one of the particles is adapted to decompose to expose the core.5. The material of claim 1 , wherein the coating of one of the particles is adapted to volatize to expose the core.6. The material of claim 1 , wherein the coating of one of the particles comprises polymer.7. The material of claim 1 , wherein the coating of one of the particles comprises ceramic.8. The material of claim 1 , wherein the coating of one of the particles comprises at least one of the following materials: alkoxysilane claim 1 , aminosilane claim 1 , organic phospholic acid claim 1 , nitride claim 1 , fluoride claim 1 , epoxy claim 1 , thiol claim 1 , disulphide claim 1 , thoilate claim 1 , triazol claim 1 , alkylphosphonic acids claim 1 , fluoropolymers claim 1 , silicones claim 1 , polypyrrol claim 1 , polyanyline claim 1 , and polymeric assembled monolayers.9. The material of claim 1 , wherein the core of one of the particles includes one or more metal particles.10. The material of claim 1 , wherein the core of one of the particles ...

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Номер записи: 63
16-02-2017 дата публикации

SILVER PARTICLE COATING COMPOSITION

Номер: US20170043396A1
Автор: KODUMA Hiroyoshi
Принадлежит: Daicel Corporation

The present invention provides a silver particle coating composition that develops excellent conductivity by low-temperature and short-time calcining, and preferably achieves excellent adhesion between a silver coating film and a substrate. A silver particle coating composition comprising: silver nano-particles (N) whose surfaces are coated with a protective agent containing an aliphatic hydrocarbon amine; silver microparticles (M); and a dispersion solvent. The silver particle coating composition, further comprising a binder resin. The silver particle coating composition, further comprising a curable monomer and a polymerization initiator. The dispersion solvent comprises at least a glycol ester-based solvent. A silver coating composition that is suitable for intaglio offset printing. 1. A silver particle coating composition comprising:silver nano-particles (N) whose surfaces are coated with a protective agent containing an aliphatic hydrocarbon amine;silver microparticles (M); anda dispersion solvent.2. The silver particle coating composition according to claim 1 , whereinthe aliphatic hydrocarbon amine in the silver nano-particles (N) comprises an aliphatic hydrocarbon monoamine (A) comprising an aliphatic hydrocarbon group and one amino group, said aliphatic hydrocarbon group having 6 or more carbon atoms in total, andfurther comprises at least one of: an aliphatic hydrocarbon monoamine (B) comprising an aliphatic hydrocarbon group and one amino group, said aliphatic hydrocarbon group having 5 or less carbon atoms in total; and an aliphatic hydrocarbon diamine (C) comprising an aliphatic hydrocarbon group and two amino groups, said aliphatic hydrocarbon group having 8 or less carbon atoms in total.3. The silver particle coating composition according to claim 2 , wherein the aliphatic hydrocarbon monoamine (A) is at least one selected from the group consisting of a linear alkylmonoamine having a linear alkyl group having 6 or more and 12 or less carbon atoms ...

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Номер записи: 64
16-02-2017 дата публикации

METHOD FOR THE PRODUCTION OF PARTS MADE FROM METAL OR METAL MATRIX COMPOSITE AND RESULTING FROM ADDITIVE MANUFACTURING FOLLOWED BY AN OPERATION INVOLVING THE FORGING OF SAID PARTS

Номер: US20170043402A1
Автор: DESRAYAUD Christophe, DI SERIO Emile Thomas, DUPERRAY Lionel, PERRIER Frédéric
Принадлежит: Saint Jean Industries

A method of manufacturing a piece of metal alloy or of metal matrix composite materials includes making a preform by additive manufacturing by adding material in successive layers, and subjecting the preform to a forging operation taking place in a single step and between two dies with a view to obtaining the final shape of the piece. 1- A method of manufacturing a piece of metal alloy or of metal matrix composite materials , comprising:making a preform by additive manufacturing by adding material in successive layers; andsubjecting the preform to a forging operation taking place in a single step and between two dies with to obtain a final shape of the piece.2- The method according to claim 1 , wherein the piece of metal alloy comprises an alloy based on iron claim 1 , aluminum claim 1 , nickel claim 1 , titanium claim 1 , chromium claim 1 , or cobalt.3- The method according to claim 1 , wherein the piece of composite materials comprises a titanium-titanium carbide alloy claim 1 , an aluminum-alumina alloy claim 1 , or an aluminum-silicon carbide alloy.4- The method according to claim 1 , wherein the forging operation is performed semi-hot or cold or hot.5- The method according to claim 1 , wherein the preform contains zones in which a powder is not bonded or is partially consolidated.6- Pieces or parts obtained by implementing the method according to . The invention relates to the technical field of manufacturing pieces of metal or of metal matrix composite, particularly but non-limitingly for making components and equipment for the automobile and aviation sectors.Additive manufacturing, which enables pieces or parts to be fabricated by fusing (melting together) or sintering successive layers, is developing, the basic concept being defined in Patent U.S. Pat. No. 4,575,330 dating from 1984.Additive manufacturing is defined by ASTM as being a process of joining materials to make objects from three-dimensional (3D) model data, usually layer upon layer, as opposed to ...

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Номер записи: 65
18-02-2021 дата публикации

Alloyed steel powder for powder metallurgy and iron-based mixed powder for powder metallurgy

Номер: US20210047713A1
Автор: Akio Kobayashi, Nao NASU, Takuya TAKASHITA
Принадлежит: JFE Steel Corp

Disclosed is an alloyed steel powder for powder metallurgy from which sintered parts that do not contain expensive Ni, or Cr or Mn susceptible to oxidation, that have excellent compressibility, and that have high strength in an as-sintered state can be obtained. The alloyed steel powder for powder metallurgy has: a chemical composition containing Cu: 1.0 mass % to 8.0 mass %, with the balance being Fe and inevitable impurities; and constituent particles in which Cu is present in an precipitated state with an average particle size of 10 nm or more.

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Номер записи: 66
24-02-2022 дата публикации

DUST CORE

Номер: US20220059263A1
Автор: Fujii Manami, KOZUKA Hisashi, Mori Satoshi, Takaoka Katsuya, Takeuchi Hiroki, Watanabe Hiroshi
Принадлежит:

The iron loss of a dust core is reduced. A dust core () includes soft magnetic metal particles () having an average particle size of 5 μm or more and 30 μm or less, and a particle boundary phase (). The particle boundary phase () includes a polycrystalline compound containing Al (aluminum). When a sectional structure of the dust core () is observed, an area percentage of α-AlOin the particle boundary phase () is 75% or less. An average thickness Ta of the particle boundary phase () is 10 nm or more and 300 nm or less. According to the present invention, the iron loss is reduced. 1. A dust core comprising soft magnetic metal particles and a particle boundary phase , the soft magnetic metal particles having an average particle size of 5 μm or more and 30 μm or less ,wherein the particle boundary phase includes a polycrystalline compound containing Al (aluminum),{'sub': 2', '3, 'when a sectional structure of the dust core is observed, an area percentage of α-AlOin the particle boundary phase is 75% or less,'}when the sectional structure of the dust core is observed in a first field of view of a 150 μm×150 μm square, and when, in a region where the particle boundary phase is located in an H-letter shape, two intersecting points where two vertical lines and one horizontal line that constitute the H letter intersect are connected with a straight line, and a perpendicular bisector of the straight line is drawn, a crossing width at a position where the perpendicular bisector crosses the particle boundary phase is defined as a thickness Tn of the particle boundary phase, andwhen the thickness of the particle boundary phase is measured at five positions to respectively determine Tn (where n is an integer of 1 to 5), and an average thickness Ta which is an average of Tn (where n is an integer of 1 to 5) is calculated,the average thickness Ta is 10 nm or more and 300 nm or less.2. The dust core according to claim 1 , whereinwhen a ratio of an amount of Al to an amount of oxygen ...

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Номер записи: 67
16-02-2017 дата публикации

Metal-Matrix Composites Reinforced with a Refractory Metal

Номер: US20170044647A1
Автор: Cook, III Grant O., Olsen Garrett T., Thomas Jeffrey G., Voglewede Daniel Brendan
Принадлежит: Halliburton Energy Services, Inc.

A metal matrix composite tool that includes a hard composite portion comprising a reinforcement material infiltrated with a binder material, wherein the reinforcement material comprises a refractory metal component dispersed with reinforcing particles, wherein a surface roughness of the reinforcing particles is at least two times greater than the refractory metal component, wherein the refractory metal component has a failure strain of at least 0.05 and a shear modulus of 200 GPa or less, and wherein the reinforcing particles have a failure strain of 0.01 or less but at least five times less than the failure strain of the refractory metal component, and the reinforcing particles have a shear modulus of greater than 200 GPa and at least two times greater than the shear modulus of the refractory metal component. The reinforcing particles may comprise an intermetallic, a boride, a carbide, a nitride, an oxide, a ceramic, and/or a diamond. 1. A metal matrix composite (MMC) tool , comprising:a hard composite portion that comprises a reinforcement material infiltrated with a binder material, wherein the reinforcement material comprises a refractory metal component dispersed with reinforcing particles,wherein a surface roughness of the reinforcing particles is at least two times greater than a surface roughness of the refractory metal component,wherein the refractory metal component has a failure strain of at least 0.05 and a shear modulus of 200 GPa or less, andwherein the reinforcing particles have a failure strain of 0.01 or less but at least five times less than the failure strain of the refractory metal component, and the reinforcing particles have a shear modulus of greater than 200 GPa and at least two times greater than the shear modulus of the refractory metal component.2. The MMC tool of claim 1 , wherein the reinforcing particles comprise particles of a material selected from the group consisting of an intermetallic claim 1 , a boride claim 1 , a carbide claim 1 ...

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Номер записи: 68
16-02-2017 дата публикации

CO3W3C Fishbone-Like Hard Phase-Reinforced Fe-Based Wear-Resistant Coating and Preparation Thereof

Номер: US20170044673A1
Автор: GU Fanjun, Lai Wei, Liu Jianyang, TAO Qing, WANG Cong, WANG Jian
Принадлежит: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

A CoWC fishbone-like hard phase-reinforced Fe-based wear-resistant coating and the preparation thereof, which belongs to the field of a wear-resistant coating on the surface of a material and a preparation method thereof. The wear-resistant coating comprises: 1.89-3.77% of C, 5.4-11.7% of Cr, 3.3-7.15% of Ni, 28.81-57.83% of W, 4.2-8.4% of Co, 0.03-0.065% of Si and the balance of Fe. The preparation process of the wear-resistant coating comprises: (1) before plasma cladding, pretreating a matrix; (2) pretreating an iron-based alloy powder; and (3) adjusting the process parameters of plasma cladding, preparing a cladding layer with a predetermined width and a predetermined thickness, and naturally cooling same down in air. The wear-resistant coating is simple in process; the prepared cladding layer has a strong metallurgical bonding property with the matrix structure, so that the best performance matching between the ceramic phase of the cladding layer and the matrix can be achieved; a fishbone-like hard phase CoWC has a very high hardness value and plays the role of a framework in the frictional process to reduce the wear of the matrix structure, thereby achieving an excellent wear resistance; plasma cladding is convenient to operate, and can be automatized; and the prepared wear-resistant layer is high in size precision and can be widely applied to surface modification of mechanical parts. 1. A CoWC fish-bone-shape hard-phase reinforced Fe-based wear-resistant coating , characterized in that: the wear-resistant coating consists of the following alloy powder elements in weight percentage: C: 1.89-3.77% , Cr: 5.4-11.7% , Ni: 3.3-7.15% , W: 28.81-57.83% , Co: 4.2-8.4% , Si: 0.03-0.065% , and the remaining is Fe.2. A method for preparing the CoWC fish-bone-shape hard-phase reinforced Fe-based wear-resistant coating according to claim 1 , characterized in that: a plasma cladding process is used to clad the Fe-based WC alloy powder on a surface of a metal matrix to form ...

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Номер записи: 69
15-02-2018 дата публикации

POLYCRYSTALLINE DIAMOND SINTERED/REBONDED ON CARBIDE SUBSTRATE CONTAINING LOW TUNGSTEN

Номер: US20180044764A1
Автор: BAO YAHUA, Belnap J. Daniel, Eyre Ronald K., Fang Yi, WANG Fulong
Принадлежит:

A method of forming a polycrystalline diamond cutting element includes assembling a diamond material, a substrate, and a source of catalyst material or infiltrant material distinct from the substrate, the source of catalyst material or infiltrant material being adjacent to the diamond material to form an assembly. The substrate includes an attachment material including a refractory metal. The assembly is subjected to a first high-pressure/high temperature condition to cause the catalyst material or infiltrant material to melt and infiltrate into the diamond material and subjected to a second high-pressure/high temperature condition to cause the attachment material to melt and infiltrate a portion of the infiltrated diamond material to bond the infiltrated diamond material to the substrate. 1. A method of forming a polycrystalline diamond cutting element , comprising:assembling a diamond material, a substrate, and a source of catalyst material or infiltrant material distinct from the substrate, the source of catalyst material or infiltrant material being adjacent to the diamond material to form an assembly, the substrate comprising an attachment material comprising a refractory metal;subjecting the assembly to a first high-pressure/high-temperature condition to cause the catalyst material or infiltrant material to melt and infiltrate into the diamond material; andsubjecting the assembly to a second high-pressure/high-temperature condition to cause the attachment material to melt and infiltrate a portion of the infiltrated diamond material to attach the infiltrated diamond material to the substrate.2. The method of claim 1 , wherein the attachment material comprises metal carbide particles and metal binder.3. The method of claim 1 , wherein the substrate comprises tungsten carbide grains bonded together by a cobalt binder.4. The method of claim 1 , wherein the catalyst material or infiltrant material infiltrates into the diamond material before the attachment material ...

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Номер записи: 70
19-02-2015 дата публикации

Resonance Tube, Method for Manufacturing Resonance Tube, and Cavity Filter

Номер: US20150048904A1
Автор: LIANG YUAN, Yanzhao Zhou
Принадлежит: Huawei Technologies Co Ltd

A resonance tube, a method for manufacturing a resonance tube, and a cavity filter, which relate to the field of communications devices and can provide a temperature compensation effect of different degrees, reduce a production cost, and improve production efficiency. The resonance tube is manufactured using powder materials, and the powder materials include at least one of carbonyl iron powder and iron powder and at least one of carbonyl nickel powder and nickel powder, a mass percentage of the at least one of carbonyl iron powder and iron powder in the powder materials is 58-70%, and a mass percentage of the at least one of carbonyl nickel powder and nickel powder in the powder materials is 30-42%. The present invention may be used on a communications device, for example, a base station.

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Номер записи: 71
16-02-2017 дата публикации

SINTERED MECHANICAL COMPONENT, DEVICE FOR FORMING POWDER COMPACT, AND METHOD FOR FORMING POWDER COMPACT

Номер: US20170045136A1
Автор: MATSUDUKI Takehiro, MOURI Toshihiko, Nakayama Toshio, Sugai Yousuke, TAGA Seiji
Принадлежит: NTN CORPORATION

Provided is a sintered gear () as a sintered machine part, which is formed of a sintered compact (M′) and which rotates in conjunction with an input of a load from another member onto a radially outer surface while sliding with respect to a shaft (S) inserted along an inner periphery, in which the sintered compact (M′) includes an inner layer () containing Cu and an outer layer () sintered together with the inner layer () under a state of being held in contact with the inner layer (), in which the outer layer () includes, as main components, Fe, Cu, and Sn as a low-melting-point metal, and a metal structure of the outer layer () includes, as main constituents, Fe structures and Cu—Sn alloy structures, which exist at a grain boundary of the Fe structures and bind the Fe structures to each other. 1. A sintered machine part , which is formed of a sintered compact and which rotates in conjunction with an input of a load from another member onto a radially outer surface while sliding with respect to a shaft inserted along an inner periphery ,wherein the sintered compact comprises an inner layer containing Cu and an outer layer sintered together with the inner layer under a state of being held in contact with the inner layer,wherein the outer layer comprises, as main components, Fe, Cu, and a low-melting-point metal having a melting point lower than a melting point of Cu, and a metal structure of the outer layer comprises, as main constituents, Fe structures and alloy structures of Cu and the low-melting-point metal, which exist at a grain boundary of the Fe structures and bind the Fe structures to each other.2. The sintered machine part according to claim 1 , wherein the low-melting-point metal is at least one kind selected from the group consisting of Sn claim 1 , Zn claim 1 , and P.3. The sintered machine part according to claim 1 , wherein the low-melting-point metal in the outer layer has a concentration of from 0.5 mass % to 2.0 mass %.4. The sintered machine part ...

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Номер записи: 72
18-02-2021 дата публикации

Silicon oxide-coated iron powder, method for producing the same, molded body for inductor using the same, and inductor

Номер: US20210050132A1
Автор: Daisuke Kodama, Masahiro Gotoh
Принадлежит: Dowa Electronics Materials Co Ltd

A silicon oxide-coated iron powder has a small particle diameter, can achieve high in a high frequency band, and has high insulating property. In a method for producing the powder, a silicon alkoxide is added to a slurry containing iron powder having an average particle diameter of 0.25 μm or more and 0.80 μm or less and an average axial ratio of 1.5 or less dispersed in a mixed solvent of water and an organic material containing water in an amount of 1% by mass or more and 40% by mass or less. Then, a hydrolysis catalyst for the silicon alkoxide is added to perform silicon oxide coating, the method resulting in a silicon oxide-coated iron powder having the high μ′ in a high frequency band and the high insulating property.

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Номер записи: 73
18-02-2021 дата публикации

Metal particle aggregates, method for producing same, paste-like metal particle aggregate composition, and method for producing bonded body using said paste-like metal particle aggregate composition

Номер: US20210050319A1
Автор: Akihiro Higami, Kazuhiko Yamasaki, Koutarou Masuyama, Tomohiko Yamaguchi
Принадлежит: Mitsubishi Materials Corp

A metal particle aggregate includes metal particles and an organic substance. The metal particles include first particles that contain one or both of silver and copper in an amount of 70% by mass or more relative to 100% by mass of all metals and have a particle diameter of 100 nm or more and less than 500 nm at a ratio of 20 to 30% by number, and include second particles that have a particle diameter of 50 nm or more and less than 100 nm, and third particles that have a particle diameter of less than 50 nm at a ratio of 80 to 70% by number in total. Surfaces of the first to third particles are covered with the same protective film.

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Номер записи: 74
19-02-2015 дата публикации

Cemented carbide article and method for making same

Номер: US20150050512A1
Автор: Bernd Heinrich Ries, Frank Friedrich Lachmann, Igor Yurievich KONYASHIN
Принадлежит: ELEMENT SIX GMBH

The present invention relates to a cemented carbide article comprising a core of metal carbide grains and a binder selected from cobalt, nickel, iron and alloys containing one or more of these metals and a surface layer defining an outer surface for the article, the surface layer comprising 5 to 25 weight percent of tungsten and 0.1 to 5 weight percent carbon, the balance of the surface layer comprising a metal or alloy selected from the binder metals and alloys and the surface layer being substantially free of carbide grains as determined by optical microscopy or SEM. A method for the production of a cemented carbide article is also provided.

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Номер записи: 75
14-02-2019 дата публикации

GRADE POWDERS AND SINTERED CEMENTED CARBIDE COMPOSITIONS

Номер: US20190047051A1
Автор: MEHROTRA PANKAJ K., Mizgalski Kent P., TRIVEDI Pankaj B.
Принадлежит:

In one aspect, grade powder compositions are described herein comprising electrochemically processed sintered carbide scrap. In some embodiments, a grade powder composition comprises a reclaimed powder component in an amount of at least 75 weight percent of the grade powder composition, wherein the reclaimed carbide component comprises electrochemically processed sintered carbide scrap. 1. A grade powder composition comprising:a reclaimed carbide powder component in an amount of at least 70 weight percent of the grade powder composition, the reclaimed carbide component comprising electrochemically processed sintered carbide scrap.2. The grade powder composition of claim 1 , wherein the electrochemically processed sintered carbide scrap comprises tungsten carbide.3. The grade powder composition of claim 2 , wherein the reclaimed carbide powder component further comprises at least one metal carbide selected from the group consisting of Group IVB metal carbides claim 2 , Group VB metal carbides and Group VIB metal carbides.4. The grade powder composition of claim 1 , wherein the electrochemically processed sintered carbide scrap has an average particle size of 0.5 μm to 30 μm.5. The grade powder composition of claim 1 , wherein the electrochemically processed sintered carbide scrap has an average particle size of 1 μm to 5 μm.6. The grade powder composition of claim 1 , wherein the reclaimed carbide powder component is present in an amount of 75-99 weight percent of the grade powder composition.7. The grade powder composition of claim 1 , wherein the reclaimed carbide powder component is present in an amount of 90-99 weight percent of the grade powder composition.8. The grade powder composition of claim 1 , wherein the reclaimed carbide powder component consists essentially of the electrochemically processed sintered carbide scrap.9. The grade powder composition of further comprising powder metallic binder.10. The grade powder composition of claim 9 , wherein the ...

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Номер записи: 76
14-02-2019 дата публикации

Cubic boron nitride sintered body and cutting tool

Номер: US20190047056A1
Автор: Kouji Hirosaki
Принадлежит: Kyocera Corp

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.

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Номер записи: 77
13-02-2020 дата публикации

Method for Manufacturing Iron-based Powder Metallurgical Parts

Номер: US20200047254A1
Автор: Bao Chongxi, Wang Jinsong, Zhu Chengxu
Принадлежит:

A method for manufacturing iron-based metallurgical parts, the method comprising: mixing graphite powder; pressing; presintering; oxidizing the presintered metallurgical part to form an oxide layer having a thickness of 1 μm to 50 μm on its surface to form an oxidized presintered metallurgical part; sintering; machining; carburizing; quenching and tempering. An oxide layer is formed on the surface of a part by oxidization, oxygen in the oxide layer is chemically reacted with the carbon in the surface layer of the product during the sintering, and the resulting product enters a sintering atmosphere in the form of gas to form a decarburized layer having a certain thickness on the surface of the part, so that the decarburization is realized. 1. A method for manufacturing iron-based metallurgical parts , the method comprising:(a) mixing graphite powder, iron powder, alloy element powder, and lubricant powder to obtain a mixed powder;(b) pressing the mixed powder on a powder metallurgical molding press to obtain a molded green compact;(c) presintering the molded green compacts in a non-oxidizing atmosphere at 600° C. to 1050° C. for 10 min to 300 min to obtain a presintered metallurgical part;(d) oxidizing the presintered metallurgical part to form an oxide layer having a thickness of 1 μm to 50 μm on its surface to form an oxidized presintered metallurgical part;(e) performing a secondary sintering of the oxidized presintered metallurgical part in an non-oxidizing atmosphere at 1050° C. to 1350° C. for 10 min to 200 min to obtain a sintered metallurgical part;(f) performing a process to increase the density and/or surface compactness of the sintered part to form a compact metallurgical part;(g) carburizing the compact metallurgical part in an atmosphere having a carbon potential of 0.3% to 2.0% at 700° C. to 1200° C. for 5 min to 400 min to form a carburized metallurgical part, and cooling the carburized metallurgical part to a temperature suitable for quenching; and(h) ...

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Номер записи: 78
21-02-2019 дата публикации

Liquid composition

Номер: US20190054525A1
Автор: Albert T. Wu, Chang-Meng Wang, Chen-Yi Chen, Chih-hao Chen, Hsiang-Chuan Chen, Ruei-Ying Sheng, Yuan-Heng Zhong
Принадлежит: Shenmao Technology Inc

A liquid composition includes copper particles, an organic acid, and a solvent. The copper particle has a particle size of 0.5 μm˜30 μm which falls in a micron scale. The liquid composition performs reaction sintering by redox reactions taken place between the copper particles and an organic acid solution at a low temperature of 150° C. in order to produce a dense copper layer and improve the conventional micron-scale copper particles that requires a protective atmosphere for the high-temperature sintering before achieving the required densification. This liquid composition also prevents an excessive oxidation of the nano copper particles during the low-temperature sintering process and a failure of the dense sintering. Due to the agglomeration of nano copper particles, some areas have to be sintered first, so that the sintered products have a good uniformity of tissue and a low resistance below 0.04 ohm per square (Ω/□).

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Номер записи: 79
21-02-2019 дата публикации

Manufacturing method of copper bonded part

Номер: US20190054538A1
Автор: Jun Kato, Koichi Kita
Принадлежит: Mitsubishi Materials Corp

A manufacturing method of a copper bonded part in which a first copper member and a second copper member are bonded together. The first copper member and the second copper member are made of copper or a copper alloy, and at least one of the first copper member and the second copper member includes a copper porous body made of copper or a copper alloy. This manufacturing method has a bonding material disposing step S01 of disposing a bonding material between the first copper member and the second copper member, and a reduction sintering step S02 of heating and holding the first copper member, the second copper member, and the bonding material in a reducing atmosphere in a range of 600° C. or higher and 1,050° C. or lower. The bonding material contains a copper oxide or a mixture of metallic copper and the copper oxide.

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Номер записи: 80
04-03-2021 дата публикации

MIXED POWDER FOR POWDER METALLURGY

Номер: US20210060640A1
Автор: TAKAMATSU Yohei, YOSHIDA Masaki
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

A mixed powder for powder metallurgy according to an embodiment of the present invention contains an iron-based powder as a main component and further contains a powder of at least one sulfide selected from CaS, MnS, and MoS; and a powder wherein a percentage content of magnesium oxide is greater than or equal to 0.005% by mass and less than or equal to 0.025% by mass, wherein the magnesium oxide has an average particle size D50 of greater than or equal to 0.5 μm and less than or equal to 5.0 μm. 1. A mixed powder suitable for powder metallurgy , the powder comprising:an iron-comprising powder as a main component;{'sub': '2', 'a first powder comprising CaS, MnS, and/or MoS, as a sulfide; and'}a second powder having percentage content of magnesium oxide in a range of from 0.005 to 0.025 mass %, based on total mixed powder weight,wherein the magnesium oxide has an average particle size D50 in a range of from 0.5 to 5.0 μm.2. The powder of claim 1 , wherein the sulfide is present in a range of from 0.04 to 0.20 mass %.3. The powder of claim 1 , wherein the first powder comprises CaS.4. The powder of claim 1 , wherein the first powder comprises MnS.5. The powder of claim 1 , wherein the first powder comprises CaS and MnS.6. The powder of claim 1 , wherein the first powder comprises MoS.7. The powder of claim 1 , wherein the first powder comprises CaS and MOS.8. The powder of claim 1 , wherein the first powder comprises MnS and MoS7.9. The powder of claim 1 , wherein the first powder comprises CaS claim 1 , MnS claim 1 , and MoS.10. The powder of claim 1 , wherein the magnesium oxide has an average particle size D50 in a range of from 0.7 to 3.0 μm.11. The powder of claim 1 , further comprising:copper in an amount of from 0.8 to 3.0 mass %, based on the total mixed powder weight.12. The powder of claim 1 , wherein the iron-comprising powder is present in an amount of at least 95.86 mass % claim 1 , based on the total mixed powder weight.13. The powder of claim 1 , ...

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Номер записи: 81
04-03-2021 дата публикации

Silicon oxide-coated soft magnetic powder and method for producing same

Номер: US20210060642A1
Автор: Koji Tanoue, Takuya Yano, Yorito Nishizawa
Принадлежит: Dowa Electronics Materials Co Ltd

A silicon oxide-coated soft magnetic powder has excellent insulating property and provides a high powder compact density. In making the powder, silicon alkoxide is added to a slurry containing soft magnetic powder containing iron in an amount of 20% by mass or more dispersed in a mixed solvent of water and an organic solvent containing water in an amount of 1% by mass or more and 40% by mass or less. A hydrolysis catalyst for the silicon alkoxide is then added to perform silicon oxide coating. The coated magnetic powder has a coverage factor R of 70% or more defined by R=Si×100/(Si+M) (wherein Si and M represent molar fractions of Si and elements constituting the soft magnetic powder obtained by an XPS measurement), a powder compact density of 4.0 g/cm 3 or more, and high μ′ at high frequency and high insulating property.

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Номер записи: 82
20-02-2020 дата публикации

PRODUCTS INCORPORATING CARBON NANOMATERIALS AND METHODS OF MANUFACTURING THE SAME

Номер: US20200055115A1
Автор: Caudill Charles Harrison Benton
Принадлежит:

Carbon nanotubes (CNTs), graphene platelets, or other forms of graphene are incorporated into raw materials before products and product components are manufactured from the materials. For example, CNTs may be incorporated into metallic powders, which can be pressed and sintered into metallic products and product components. CNTs or graphene platelets can also be incorporated into plastics, ceramics, metals, or other materials used to construct products and product components by additive manufacturing. When incorporated into the products and product components, the CNTs or graphene platelets can improve various properties of the products and product components, such as thermal conductivity, electrical conductivity, or structural properties. 1. A method comprising:mixing carbon nanomaterials into a liquid matrix or a matrix curable by a physical process to generate a graphene-based material; andmanufacturing a product or product component using the graphene-based material.2. The method of claim 1 , wherein the carbon nanomaterials comprise carbon nanotubes claim 1 , graphene platelets claim 1 , one or more fullerenes claim 1 , or linear acetylenic carbon.3. The method of claim 2 , comprising mixing the carbon nanotubes into the matrix curable by the physical process.4. The method of claim 3 , wherein the matrix comprises a metallic powder claim 3 , and wherein manufacturing the product or the product component using the graphene-based material comprises pressing and sintering the graphene-based material.5. The method of claim 4 , further comprising aligning the carbon nanotubes before sintering.6. The method of claim 3 , wherein the matrix comprises a metallic powder claim 3 , and wherein manufacturing the product or the product component using the graphene-based material comprises additive manufacturing.7. The method of claim 6 , wherein the additive manufacturing comprises printing.8. The method of claim 2 , comprising incorporating the carbon nanotubes into the ...

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Номер записи: 83
20-02-2020 дата публикации

COPPER ALLOY PARTICLES, SURFACE-COATED COPPER-BASED PARTICLES, AND MIXED PARTICLES

Номер: US20200055116A1
Автор: Yoshida Hirokazu
Принадлежит: FURUKAWA ELECTRIC CO., LTD.

It is an object of the present disclosure to provide copper alloy particles or the like, wherein, by sufficiently melting an irradiation region with heat generated through the irradiation of a laser beam during manufacturing in particular, a layer-manufactured product can be obtained, which has low porosity (void fraction), and excellent corrosion resistance and fatigue characteristics. 1. Copper alloy particles characterized by being used as an Additive Manufacturing material by irradiation with a laser beam having a wavelength of 1.2 μm or less , and having an average particle diameter of 50 μm or less , wherein a light absorption rate of the material is 6% or more.2. The copper alloy particles according to claim 1 , wherein the copper alloy particles contain Ni: 1.0 to 40.0% by mass claim 1 , Al: 0 to 10% by mass claim 1 , Cr: 0 to 10% by mass claim 1 , Co: 0 to 10% by mass claim 1 , Fe: 0 to 10% by mass claim 1 , Mg: 0 to 10% by mass claim 1 , Mn : 0 to 10% by mass claim 1 , Mo: 0 to 10% by mass claim 1 , Pd: 0 to 10% by mass claim 1 , Pt: 0 to 10% by mass claim 1 , Rh: 0 to 10% by mass claim 1 , Si: 0 to 10% by mass claim 1 , Sn: 0 to 10% by mass claim 1 , Ti: 0 to 10% by mass claim 1 , W: 0 to 10% by mass claim 1 , Zn: 0 to 10% by mass claim 1 , C: 0 to 10% by mass claim 1 , and S: 0 to 10% by mass claim 1 , the balance being copper and unavoidable impurities.3. The copper alloy particles according to claim 2 , wherein the copper alloy particles contain at least one element selected from the group of Al: 0.5 to 10% by mass claim 2 , Cr: 0.5 to 10% by mass claim 2 , Co: 0.5 to 10% by mass claim 2 , Fe: 0.5 to 10% by mass claim 2 , Mg: 0.5 to 10% by mass claim 2 , Mn: 0.5 to 10% by mass claim 2 , Mo: 0.5 to 10% by mass claim 2 , Pd: 0.5 to 10% by mass claim 2 , Pt: 0.5 to 10% by mass claim 2 , Rh: 0.5 to 10% by mass claim 2 , Si: 0.5 to 10% by mass claim 2 , Sn: 0.5 to 10% by mass claim 2 , Ti: 0.5 to 10% by mass claim 2 , W: 0.5 to 10% by mass claim 2 , Zn: 0.5 ...

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Номер записи: 84
05-03-2015 дата публикации

Sintered bearing and manufacturing method for same

Номер: US20150064045A1
Автор: Makoto Jinnou, Natsuhiko Mori, Yoshinori Ito
Принадлежит: NTN Corp

Provided is a sintered bearing ( 1 ), including 3 to 12% by mass of aluminum, 0.05 to 0.5% by mass of phosphorus, and the balance including copper as a main component, and inevitable impurities, the sintered bearing ( 1 ) having a structure in which an aluminum-copper alloy is sintered with a sintering aid added to raw material powder, a pore (db, do) in a surface layer portion of the sintered bearing ( 1 ) being formed smaller than an internal pore (di).

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Номер записи: 85
28-02-2019 дата публикации

CUTTING INSERT

Номер: US20190061011A1
Автор: MAEGAWA Junya, NOMIYAMA Ryoma
Принадлежит:

The cutting insert may include a substrate including a first surface, a second surface, and a cutting edge. The substrate may include a hard phase and a binder phase, and the hard phase may include a first hard phase and a second hard phase. In X-ray diffraction analysis, a peak of the first hard phase may be observed on a higher angle side than a peak of the second hard phase. The second hard phase in the second surface may include a compressive residual stress of 150 MPa or more. A maximum height (Rz) in the second surface may be 0.2 to 1.5 μm. A maximum height of the cutting edge may be 2 to 30 times the maximum height in the second surface. 1. A cutting insert , comprising:a substrate comprising a first surface, a second surface adjacent to the first surface, anda cutting edge located at least at a part of an intersecting ridge portion of the first surface and the second surface, whereinthe substrate comprises a hard phase; the hard phase comprising titanium and a carbonitride selected from the group consisting of one or more metals from Groups 4, 5, and 6 in the periodic table; and a binder phase comprising at least one of cobalt and nickel;the hard phase comprises a first hard phase and a second hard phase;a peak of the first hard phase is observed on a higher angle side than a peak of the second hard phase in X-ray diffraction analysis;the second hard phase in the second surface comprises a compressive residual stress of 150 MPa or more;a maximum height (Rz) in the second surface is 0.2 to 1.5 μm; anda maximum height of the cutting edge is 2 to 30 times the maximum height in the second surface.2. The cutting insert according to claim 1 , whereina mass ratio (N/(C+N)) of a nitrogen content to a total content of carbon and nitrogen in the substrate is 0.45 to 0.55.3. The cutting insert according to claim 1 , whereina maximum height in the first surface is 0.2 to 1 μm and the maximum height of the cutting edge is 1.5 to 6 μm.4. The cutting insert according to ...

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Номер записи: 86
17-03-2022 дата публикации

IRON-BASED NANOPARTICLES AND GRAINS

Номер: US20220080500A1
Автор: Jiang Yanfeng, Liu Jinming, Ma Bin, Wang Jian-Ping, Wu Yiming
Принадлежит:

Example nanoparticles may include an iron-based core, and a shell. The shell may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example alloy compositions may include an iron-based grain, and a grain boundary. The grain boundary may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example techniques for forming iron-based core-shell nanoparticles may include depositing a shell on an iron-based core. The depositing may include immersing the iron-based core in a salt composition for a predetermined period of time. The depositing may include milling the iron-based core with a salt composition for a predetermined period of time. Example techniques for treating a composition comprising core-shell nanoparticles may include nitriding the composition. 1. A nanoparticle comprising:{'sub': ['16', '2'], '#text': 'an iron-based core, wherein the iron-based core comprises elemental iron and α″-FeN; and'}a shell, wherein the shell comprises an anti-ferromagnetic material;wherein the nanoparticle has a coercivity of at least about 600 Oe.2. The nanoparticle of claim 1 , wherein the shell comprises at least one of manganese nitride or ferromanganese.3. The nanoparticle of claim 1 , wherein the core has a major dimension between about 20 nm and about 100 nm.4. The nanoparticle of claim 1 , wherein the shell has a thickness between about 1 nm and about 10 nm.5. The nanoparticle of claim 1 , wherein the core is an ellipsoid with a ratio of a maximum diameter to a minimum diameter of at least about 2.6. A bulk magnetic material comprising a plurality of the nanoparticles of .7. The nanoparticle of claim 1 , formed by depositing a shell on an iron-based core to form a core-shell nanoparticle by at least milling the iron-based core with a salt composition for a predetermined period of time; wherein the salt composition comprises at least one of precursors of silica claim 1 , aluminum oxide claim 1 , silicon nitride claim 1 , aluminum nitride ...

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Номер записи: 87
12-03-2015 дата публикации

METHOD FOR FABRICATING A BIOCOMPATIBLE MATERIAL HAVING A HIGH CARBIDE PHASE AND SUCH MATERIAL

Номер: US20150068362A1
Автор: Lawrynowicz Daniel E., Wang Aiguo, Zeng Haitong, Zhang Zongtao
Принадлежит:

A method of fabricating a material having a high concentration of a carbide constituent. The method may comprise adding a carbide source to a biocompatible material in which a weight of the carbide source is at least approximately 10% of the total weight, heating the carbide source and the biocompatible material to a predetermined temperature to melt the biocompatible material and allow the carbide source to go into solution to form a molten homogeneous solution, and impinging the molten homogeneous solution with a high pressure fluid to form spray atomized powder having carbide particles. The size of a particle of carbide in the atomized powder may be approximately 900 nanometers or less. The biocompatible material may be cobalt chrome, the carbide source may be graphite, and the fluid may be a gas or a liquid. 1. (canceled)2. Method of fabricating a material having a high concentration of a carbide constituent and utilizing said material to coat at least one surface of a component , said method comprising:adding a carbide source to cobalt chrome or an alloy thereof, in which a weight of the carbide source is at least approximately 50% of a total weight of the carbide source and the cobalt chrome or the alloy thereof;heating the carbide source and the cobalt chrome or the alloy thereof to a predetermined temperature to melt the cobalt chrome or the alloy thereof and allow the carbide source to go into solution so as to form a molten homogeneous solution; andimpinging the molten homogeneous solution with a high pressure fluid so as to form spray atomized powder having carbide particles,in which a size of a carbide particle in the atomized powder is approximately 900 nanometers or less, andcoating the at least one surface of the component with the spray atomized powder having carbide particles.3. The method according to claim 2 , in which the size of said carbide particle in the atomized powder is within a range of approximately 10-200 nanometers.4. The method ...

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Номер записи: 88
27-02-2020 дата публикации

METHOD FOR PRODUCING METAL POWDER

Номер: US20200061715A1
Автор: Iwasaki Mineto, Kimura Tetsuya
Принадлежит:

A method for producing a metal powder provided on the surface thereof with a glassy thin film, wherein a glassy substance is produced in the vicinity of the surface of the metal powder by spray pyrolysis from a solution that contains a thermally decomposable metal compound and a glass precursor that produces a glassy substance that does not form a solid solution with the metal produced from the metal compound by thermal decomposition, so as to form the metal powder provided on the surface thereof with the glassy thin film. The metal includes a base metal as a major component, and the solution contains 5 to 30 mass %, as the mass % with reference to the overall solution, of a reducing agent that is soluble in the solution and exhibits a reducing activity during the aforementioned step of heating. 1. A method for producing a metal powder containing iron provided on a surface thereof with a glassy thin film , the method comprising:converting a solution into microfine droplets, wherein the solution contains a thermally decomposable metal compound comprising an iron compound and a glass precursor that produces a glassy substance that does not form a solid solution with a metal produced from the thermally decomposable metal compound by thermal decomposition; andheating the microfine droplets, while they are dispersed in a carrier gas, at a temperature higher than a decomposition temperature of the thermally decomposable metal compound, higher than a decomposition temperature of the glass precursor, and higher than a melting point of the metal produced from the thermally decomposable metal compound, to produce a metal powder comprising the metal and to produce the glassy substance in a vicinity of the surface of the metal powder, wherein{'sub': '2', 'the glassy substance contains at least 40 mass % of SiOin terms of oxide, and'}the solution contains 5 to 30 mass %, as the mass %, with reference to an overall solution, of a reducing agent that is soluble in the solution and ...

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Номер записи: 89
08-03-2018 дата публикации

Metal nanowires, transparent conductive film and method for producing same, dispersion liquid, information input device, and electronic device

Номер: US20180065177A1
Автор: Mikihisa Mizuno, Ryosuke IWATA, Shinobu Hara, Yasuhisa Ishii
Принадлежит: Dexerials Corp

Provided are metal nanowires having a high total light transmittivity that efficiently inhibit scattering of external light at a display screen such as a touch panel, and improve black floating prevention (photopic contrast) and electrode pattern non-visibility. Also provided are a transparent conductive film including the metal nanowires, a method for producing the transparent conductive film, a dispersion liquid including the metal nanowires, an information input device including the transparent conductive film, and an electronic device including the transparent conductive film. The metal nanowires include metal nanowire bodies and a colored compound adsorbed onto the metal nanowire bodies. The colored compound is a dye and is adsorbed in an amount of from 0.5 mass % to 10 mass % relative to the metal nanowire bodies.

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Номер записи: 90
04-03-2021 дата публикации

Nonwoven fabric for shielding terahertz frequencies

Номер: US20210068318A1
Автор: Edgar-Johannes VAN HATTUM
Принадлежит: Sze Hagenuk GmbH

A method for producing a nonwoven for shielding electromagnetic radiation in a terahertz (THz) range includes: providing a first metal alloy adapted to shield electromagnetic radiation; providing a polymer material; providing a second metal alloy which differs from the first metal alloy; producing polymer fibers with filled fiber cores by evaporating the first metal alloy and mixing the first metal alloy molecules with the polymer material; coating at least a part of a surface of the polymer fibers with the second metal alloy; producing the nonwoven by randomly and irregularly arranging the coated polymer fibers with filled fiber cores in a three spatial dimensional directions, or producing the nonwoven by randomly and irregularly arranging the polymer fibers with filled fiber cores in the three spatial dimensional directions and coating at least a part of a surface of the nonwoven with the second metal alloy.

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Номер записи: 91
09-03-2017 дата публикации

SEMICONDUCTOR NANOCRYSTALS AND METHOD OF PREPARATION

Номер: US20170066050A1
Автор: Allen Peter, GURKIN KEEVE, Kamplain Justin W.
Принадлежит:

A method for preparing semiconductor nanocrystals comprising indium arsenide is disclosed. The method includes heating a first mixture including nanocrystal seeds comprising indium arsenide with an absorbance in a range from about 700 to 800 nm and a liquid medium in a reaction vessel to a first temperature; and combining the nanocrystals seeds comprising indium arsenide with an indium-source mixture and an arsenic-source mixture under conditions suitable to increase the size of the seeds to form the semiconductor nanocrystals comprising indium arsenide, wherein the indium-source mixture includes an indium precursor, a coordinating solvent, and a carboxylic acid; and the arsenic-source mixture includes a liquid medium and an arsenic precursor represented by the formula As(Y(R)), where Y is Ge, Sn, or Pb; and each R, independently, is alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocyclyl, aryl, or heteroaryl, wherein each R, independently, is optionally substituted by 1 to 6 substituents independently selected from hydrogen, halo, hydroxy, nitro, cyano, amino, alkyl, cycloalkyl, cycloalkenyl, alkoxy, acyl, thio, thioalkyl, alkenyl, alkynyl, cycloalkenyl, heterocyclyl, aryl, or heteroaryl. Semiconductor nanocrystals are also disclosed. 1. A method for preparing semiconductor nanocrystals comprising indium arsenide , the method comprising:heating a first mixture including nanocrystal seeds comprising indium arsenide with an absorbance in a range from about 700 to 800 nm and a liquid medium in a reaction vessel to a first temperature; andcombining the nanocrystals seeds comprising indium arsenide with an indium-source mixture and an arsenic-source mixture under conditions suitable to increase the size of the seeds to form the semiconductor nanocrystals comprising indium arsenide, {'br': None, 'sub': 3', '3, 'As(Y(R))\u2003\u2003(I)'}, 'wherein the indium-source mixture includes an indium precursor, a coordinating solvent, and a carboxylic acid; and the arsenic ...

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Номер записи: 92
09-03-2017 дата публикации

A New Method of Making a Cemented Carbide or Cermet Body

Номер: US20170066056A1
Автор: Fuller Peter George, Gerl Stefan, Ronnheden Sofia Maria, Thompson Christopher
Принадлежит:

A method of manufacturing a cemented carbide and/or cermet comprising the steps of: a) providing a powder comprising metal carbide and binder metal and optionally metal nitride(s); b) mixing the powder composition under vacuum; c) adding at least one organic binder to the powder composition; d) mixing the at least one organic binder with the powder composition under vacuum and raising the temperature to a predetermined temperature and keeping the temperature for a predetermined time until the organic binder has melted; e) subjecting the obtained mixture of step d) to forming and sintering processes; wherein one or more dispersing agents is added to the powder composition in step a). 2. The method according to characterised in that one or more cooling agents is added to the powder composition in step b).3. The method according to claim 1 , wherein cemented carbide comprises more than or equal to 70 wt % tungsten carbide and not more than or equal to 30 wt % of at least one other metal carbide and/or metal nitride selected from titanium carbide claim 1 , tantalum carbide claim 1 , tantalum nitride claim 1 , titanium nitride claim 1 , niobium carbide claim 1 , vanadium carbide claim 1 , molybdenum carbide claim 1 , chromium carbide and mixtures thereof.4. The method according to claim 1 , wherein cermet comprises titanium carbide claim 1 , titanium nitride claim 1 , tungsten carbide claim 1 , tantalum carbide claim 1 , tantalum nitride claim 1 , niobium carbide claim 1 , vanadium carbide claim 1 , molybdenum carbide claim 1 , chromium carbide claim 1 , or a mixture thereof.5. The method according to claim 1 , wherein that binder metal(s) is selected from cobalt claim 1 , molybdenum claim 1 , iron claim 1 , chromium or nickel and a mixture thereof.6. The method according to claim 1 , wherein that the mixing is performed by using a high shear mixer such as a high speed rotor mixer claim 1 , or a planetary mixer.7. The method according to claim 1 , wherein one or more ...

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Номер записи: 93
09-03-2017 дата публикации

METHOD FOR PRODUCING NANOPARTICLES AND THE NANOPARTICLES PRODUCED THEREFROM

Номер: US20170066057A1
Автор: HENDERSON HUNTER B., Ludtka Gerard M., Manuel Michele Viola, RIOS Orlando
Принадлежит: UTBATTELLE, LLC

Disclosed herein is a method comprising disposing a container containing a metal and/or ferromagnetic solid and abrasive particles in a static magnetic field; where the container is surrounded by an induction coil; activating the induction coil with an electrical current, to heat up the metallic or ferromagnetic solid to form a fluid; generating sonic energy to produce acoustic cavitation and abrasion between the abrasive particles and the container; and producing nanoparticles that comprise elements from the container, the metal and/or the ferromagnetic solid and the abrasive particles. Disclosed herein too is a composition comprising first metal or a first ceramic; and particles comprising carbides and/or nitrides dispersed therein. Disclosed herein too is a composition comprising nanoparticles comprising chromium carbide, iron carbide, nickel carbide, y.-Fe and magnesium nitride. 1. A method comprising:disposing a container containing a metal and/or ferromagnetic solid and abrasive particles in a static magnetic field; where the container is surrounded by an induction coil;activating the induction coil with an electrical current, to heat up the metallic or ferromagnetic solid to form a fluid;generating sonic energy to produce acoustic cavitation and abrasion between the abrasive particles and the container; andproducing nanoparticles that comprise elements from the container, the metal and/or the ferromagnetic solid and the abrasive particles.2. The method of claim 1 , where the electric current interacts with the static magnetic field produced to produce an alternating Lorentz force in the sample to produce melt sonication in the metal and/or ferromagnetic solid.3. The method of claim 1 , where the container comprises iron claim 1 , nickel claim 1 , cobalt claim 1 , chromium claim 1 , aluminum claim 1 , gold claim 1 , platinum claim 1 , silver claim 1 , tin claim 1 , antimony claim 1 , titanium claim 1 , tantalum claim 1 , vanadium claim 1 , hafnium claim 1 , ...

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Номер записи: 94
11-03-2021 дата публикации

System and Method for Integrated Deposition and Heating

Номер: US20210069786A1
Автор: David R. Hall, Jin Dawson, Matthew Dawson, Nicholas FARANDOS
Принадлежит: Utility Global Inc

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

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Номер записи: 95
09-03-2017 дата публикации

LIGAND PASSIVATED CORE-SHELL FEPT@CO NANOMAGNETS EXHIBITING ENHANCED ENERGY PRODUCT

Номер: US20170069412A1
Автор: Carnevale David J., Shatruk Michael, Strouse Geoffrey F.
Принадлежит:

A one-pot microwave synthesis of FePt@Co allows systematic growth of the soft-magnet Co shell (0.6 nm to 2.7 nm thick) around the hard-magnet FePtcore (5 nm in diameter). Controlled growth leads to a four-fold enhancement in energy product of the core-shell assembly as compared to the energy product of bare FePtcores. The simultaneous enhancement of coercivity and saturation moment reflects the onset of theoretically predicted exchange spring behavior. The demonstration of nanoscale exchange-spring magnets will result in improved high-performance magnet design for energy applications. 1. An article comprising:a core region comprising an alloy of iron and platinum;a shell region in contact with the core region, the shell region comprising cobalt.2. The article of wherein the core region consists essentially of an alloy of iron and platinum.3. The article of wherein the core region consists of an alloy of iron and platinum.4. The article of wherein the alloy of iron and platinum has the general formula FePt claim 1 , wherein x has a value between about 0.3 and about 0.7.5. The article of wherein the alloy of iron and platinum has the general formula FePt claim 1 , wherein x has a value between about 0.3 and about 0.4.6. The article of wherein the alloy of iron and platinum has the general formula FePt.7. The article of wherein the core region comprises face centered cubic crystals.8. The article of wherein the core region comprises face centered tetragonal crystals.9. The article of having a shape selected from the group consisting of sphere claim 1 , bar claim 1 , cone claim 1 , sheet claim 1 , and rod.10. The article of having a shape comprising a sphere claim 1 , wherein the core region has a diameter between about 2 nanometers and about 8 nanometers.11. The article of having a shape comprising a sphere claim 1 , wherein the core region has a diameter between about 4 nanometers and about 6 nanometers.12. The article of having a shape comprising a sphere claim 1 , ...

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Номер записи: 96
17-03-2016 дата публикации

Preparation Method of Electrical Contact Material

Номер: US20160074935A1
Автор: Chen Lesheng, Chen Yuhang
Принадлежит:

A preparation method of an electrical contact material includes steps of: adopting chemical plating to cover nickel coating on aquadag or metallic oxide, then covering with silver coating, and forming Ag—Ni—C or Ag—Ni—MeO core-shell structure, which improves interface wettability of aquadag, metallic oxide and silver matrix, and removes the adverse effect on the electrical contact material mechanical property due to bad interface wettability in conventional powder metallurgy method. What is important is that the silver in intermediate composite particles is replaced by nickel coating, thus reduce the silver use level. The main function of silver coating is to improve inoxidizability of composite particles, sintering granulation property and the deformability during the manufacturing process of intermediate composite particles, thus improve the technological property. 110-. (canceled)11. A preparation method of an electrical contact material , comprising following steps of:{'sup': 'st', '1step, adopting chemical plating to cover a nickel coating on aquadag or metallic oxide particles;'}{'sup': nd', 'st, '2step, adopting chemical plating to further cover a silver coating on the aquadag or the metallic oxide particles with the nickel coating by the 1step;'}{'sup': d', 'nd, '3step, adopting nitrogen protection to conduct sintering granulation to powder of Ag—Ni—C or Ag—Ni—MeO core-shell structure which is formed by the 2step, and obtaining intermediate composite particle powder, then sieving;'}{'sup': th', 'rd, '4step, mixing the intermediate composite particles after sieving by the 3step with pure silver powder to reduce a content of aquadag or metallic oxide to a setting value; and'}{'sup': th', 'th, '5step, making well-mixed powder of the 4step pressed and nitrogen protection atmosphere sintered, then extruding and drawing to obtain the electrical contact material where the aquadag or the metallic oxide particles present fibrous arrangement in a local region; wherein ...

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Номер записи: 97
17-03-2016 дата публикации

Production of substantially spherical metal powders

Номер: US20160074942A1
Автор: Pei Sun, Yang Xia, Ying Zhang, Zhigang Z. Fang
Принадлежит: University of Utah Research Foundation UURF

A method for producing a substantially spherical metal powder is described. A particulate source metal includes a primary particulate and has an average starting particle size. The particulate source metal is optionally ball milled and mixed with a binder in a solvent to form a slurry. The slurry is granulated to form substantially spherical granules, wherein each granule comprises an agglomeration of particulate source metal in the binder. The granules are debinded at a debinding temperature to remove the binder from the granules forming debinded granules. The debinded granules are at least partially sintered at a sintering temperature such that particles within each granule fuse together to form partially or fully sintered solid granules. The granules can then be optionally recovered to form a substantially spherical metal powder.

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Номер записи: 98
15-03-2018 дата публикации

REVERSIBLE BINDERS FOR USE IN BINDER JETTING ADDITIVE MANUFACTURING TECHNIQUES

Номер: US20180071820A1
Автор: Chan Kwok Pong, Kelkar Rajendra Madhukar, Leman John, Natarajan Arunkumar, Schoonover Jeffrey Jon, Singh Prabhjot, VENKATARAMANI Venkat Subramaniam
Принадлежит:

A method of binder jet printing a metal part includes depositing a layer of a metal powder on a working surface of a binder jet printer and selectively printing a binder solution having a reversible binder into the layer of metal powder in a pattern to generate a printed layer. The pattern is representative of a structure of a layer of the metal part. The method also includes curing the reversible binder in the printed layer to generate a layer of a green body metal part and heating the green body metal part above a first temperature to remove a substantial portion of the reversible binder and generate a brown body metal part. The reversible binder is thermally decomposed to generate oligomers that remain within and strengthen the brown body metal part. The method further includes heating the brown body metal part above a second temperature to remove the oligomers and sinter the metal powder to generate the metal part. The metal part is substantially free of char residue. 1. A method of binder jet printing a metal part comprising:depositing a layer of a metal powder on a working surface of a binder jet printer;selectively printing a binder solution comprising a reversible binder into the layer of metal powder in a pattern to generate a printed layer, wherein the pattern is representative of a structure of a layer of the metal part;curing the reversible binder in the printed layer to generate a layer of a green body metal part;heating the green body metal part above a first temperature to remove a substantial portion of the reversible binder and generate a brown body metal part, wherein the reversible binder is thermally decomposed to generate oligomers that remain within and strengthen the brown body metal part; andheating the brown body metal part above a second temperature to remove the oligomers and sinter the metal powder to generate the metal part, wherein the metal part is substantially free of char residue.2. The method of binder jet printing the metal part ...

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Номер записи: 99
16-03-2017 дата публикации

Biodegradable Magnesium Alloys and Composites

Номер: US20170072103A1
Автор: Bhaduri Sarit B., Zhou Huan
Принадлежит: The University of Toledo

Biodegradable, magnesium alloys and composites, articles produced therefrom, methods of making the same, and methods of using the same are described. 1. A composite comprising:magnesium;a rare earth element present at a concentration up to about 15 wt %; andsilica present at a concentration up to about 15 wt %;wherein the composite has a nanocrystalline grain size.2. (canceled)3. The composite of claim 1 , wherein the rare earth element is not present in an oxide.4. The composite of claim 3 , wherein the rare earth element is selected from the group consisting of yttrium (Y) claim 3 , gadolinium (Gd) claim 3 , terbium (Tb) claim 3 , dysprosium (Dy) claim 3 , neodymium (Nd) claim 3 , lanthanum (La) claim 3 , cerium (Ce) claim 3 , praseodymium (Pr) claim 3 , and samarium (Sm).5. (canceled)6. The composite of claim 1 , further comprising an additive selected from the group consisting of Ti claim 1 , Al claim 1 , Zr claim 1 , Zn claim 1 , and Mn.7. The composite of claim 1 , wherein the composite consists essentially of magnesium claim 1 , yttrium claim 1 , and silica.8. The composite of claim 1 , further comprising a Ca—P coating.9. The composite of claim 8 , wherein the Ca—P coating is selected from the group consisting of: hydroxyapatite (Ca(PO)(OH)) claim 8 , tetracalcium phosphate (TTCP claim 8 , Ca(PO)O) claim 8 , tricalcium phosphate [α-TCP claim 8 , α-Ca(PO)and β-TCP claim 8 , β-Ca(PO)] claim 8 , dicalcium phosphate anhydrous (DCPA claim 8 , monetite claim 8 , CaHPO) claim 8 , di-calcium phosphate dihydrate (DCPD claim 8 , brushite claim 8 , CaHPO.2HO) claim 8 , and octacalcium phosphate (OCP claim 8 , CaH(PO).5HO).10. (canceled)11. (canceled)12. (canceled)13. An article comprising the composite of claim 1 , wherein the article is selected from the group consisting of: orthopedic implants claim 1 , cochlear implants claim 1 , surgical staples claim 1 , aneurism coils claim 1 , vascular closing devices claim 1 , plates claim 1 , screws claim 1 , intramedullary ...

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Номер записи: 100