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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 60. Отображено 60.
27-05-2010 дата публикации

High resistivity SiC material with B, N and O as the only additions

Номер: US20100130344A1
Автор: Biljana Mikijelj, Shanghua Wu, MIKIJELJ BILJANA, WU SHANGHUA
Принадлежит: Ceradyne, Inc.

A dense silicon carbide (SiC) material with boron (B), nitrogen (N) and oxygen (O) as the only additives and with excellent insulting performance (electrical volume resistivity greater than 1×108 .cm). The SiC ceramic material, made from a powder mix of, by weight, from 0.1 to 7% boron carbide, from 0.1 to 7% silicon nitride, from 0.1 to 6% silicon dioxide, and a balance of -SiC, consists essentially of (1) at least 90% by weight of -SiC, (2) about 0.3 to 4.0% by weight of boron, (3) about 0.1 to 6.0% by weight of nitrogen, (4) about 0.06 to 0.5% by weight of oxygen, and (5) no more than 0.07% by weight of metallic impurities; wherein the boron and nitrogen are present according to an B/N atomic ratio of 0.9:1 to 5:1. In particular, this material is suitable for applications in plasma etching chambers for semiconductor and integrated circuit manufacturing.

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Номер записи: 1
09-01-2018 дата публикации

Extrusion process for proppant production

Номер: US0009862879B2
Автор: Dilip K. Chatterjee, Shanghua Wu, Yuming Xie, Christopher E. Coker, Robert D. Skala, CHATTERJEE DILIP K, WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, SKALA ROBERT D, Chatterjee Dilip K., Wu Shanghua, Xie Yuming, Coker Christopher E., Skala Robert D.
Принадлежит: Halliburton Energy Services, Inc., HALLIBURTON ENERGY SERVICES INC

An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.

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Номер записи: 2
30-06-2011 дата публикации

Ceramic Particles With Controlled Pore and/or Microsphere Placement and/or Size and Method Of Making Same

Номер: US20110160104A1
Автор: Shanghua Wu, Yuming Xie, Christopher E. Coker, Dilip Chatterjee, WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, CHATTERJEE DILIP, COKER CHRISTOPHER E.
Принадлежит: OXANE MATERIALS, INC.

The present invention relates to lightweight high strength microsphere containing ceramic particles having controlled microsphere placement and/or size and microsphere morphology, which produces an improved balance of specific gravity and crush strength such that they can be used in applications such as proppants to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more microsphere containing ceramic particles of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the microsphere containing ceramic particles of the present invention are further disclosed, as well as methods of making the microsphere containing ceramic particles.

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Номер записи: 3
24-12-2015 дата публикации

Light Weight Proppant With Improved Strength And Methods Of Making Same

Номер: US20150368548A1
Автор: Shanghua Wu, Jody Pham, Yuming Xie, Dilip K. Chatterjee, Andrew Miller, Christopher E. Coker
Принадлежит: HALLIBURTON ENERGY SERVICES, INC.

Methods are described to make strong, tough, and lightweight whisker-reinforced glass-ceramic composites through a self-toughening structure generated by viscous reaction sintering of a complex mixture of oxides. The invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses. 1. A method for producing a proppant comprising i. at least one metal oxide or precursor thereof that is capable of forming whiskers in said proppant and as part of said proppant,', 'ii. at least one amorphous material containing at least one entrapped vaporizable material,', 'iii. preformed whiskers, and', 'iv. at least one whisker promoter, optionally in the absence of fluorine or fluorine compounds;, 'a. forming a green body from a green body material comprising'}b. reactive sintering said green body under reactive sintering conditions to form a sintered body comprising whiskers and at least one amorphous phase.2. The method of claim 1 , wherein said at least one metal oxide comprises a first metal oxide and a second metal oxide claim 1 , wherein said first metal oxide and said second metal oxide are different from each other.3. The method of claim 1 , wherein said amorphous material comprises perlite claim 1 , stober silica claim 1 , pumice claim 1 , andesite claim 1 , scoria claim 1 , volcanic glasses claim 1 , or any combination thereof.4. The method of claim 3 , wherein said vaporizable material comprises water (HO) carbon dioxide (CO) claim 3 , sulfur dioxide (SO) claim 3 , hydrogen sulfide (HS) claim 3 , nitrogen claim 3 , argon claim 3 , helium claim 3 , neon claim 3 , methane claim 3 , carbon monoxide (CO) claim 3 , hydrogen claim 3 , oxygen claim 3 , hydrogen chloride (HCl) claim 3 , hydrogen fluoride (HF) claim 3 , hydrogen bromide (HBr) claim 3 , nitrogen oxide (NOx) claim 3 , sulfur hexafluoride (SF) claim 3 , carbonyl sulfide (COS) claim 3 , volcanic gases claim 3 , or any combination thereof.5. The ...

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Номер записи: 4
02-08-2011 дата публикации

High resistivity SiC material with B, N and O as the only additions

Номер: US0007989380B2
Автор: Biljana Mikijelj, Shanghua Wu, MIKIJELJ BILJANA, WU SHANGHUA
Принадлежит: Ceradyne, Inc., CERADYNE INC, CERADYNE, INC.

A dense silicon carbide (SiC) material with boron (B), nitrogen (N) and oxygen (O) as the only additives and with excellent insulting performance (electrical volume resistivity greater than 1×108 ·cm). The SiC ceramic material, made from a powder mix of, by weight, from 0.1 to 7% boron carbide, from 0.1 to 7% silicon nitride, from 0.1 to 6% silicon dioxide, and a balance of -SiC, consists essentially of (1) at least 90% by weight of -SiC, (2) about 0.3 to 4.0% by weight of boron, (3) about 0.1 to 6.0% by weight of nitrogen, (4) about 0.06 to 0.5% by weight of oxygen, and (5) no more than 0.07% by weight of metallic impurities; wherein the boron and nitrogen are present according to an B/N atomic ratio of 0.9 to 1.5. In particular, this material is suitable for applications in plasma etching chambers for semiconductor and integrated circuit manufacturing.

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Номер записи: 5
20-05-2008 дата публикации

Process for making a ceramic body containing alumina and boron carbide

Номер: US0007375044B2
Автор: Russell L. Yeckley, Shanghua Wu, YECKLEY RUSSELL L, WU SHANGHUA, YECKLEY RUSSELL L.
Принадлежит: Kennametal Inc., KENNAMETAL INC, KENNAMETAL INC.

A process for making a ceramic body that includes the following steps: providing a starting powder mixture, the starting powder mixture comprises between about 15 volume percent and about 35 volume percent boron carbide powder and at least about 50 volume percent alumina powder and no more than about 5 volume percent of a sintering aid; and consolidating the powder mixture at a temperature equal to between about 1400 degrees Centigrade and 1850 degrees Centigrade to achieve a ceramic with a density equal to greater than 99 percent of theoretical density.

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Номер записи: 6
22-07-2008 дата публикации

Ceramic body containing alumina and boron carbide

Номер: US0007402540B2
Автор: Russell L. Yeckley, Shanghua Wu, YECKLEY RUSSELL L, WU SHANGHUA, YECKLEY RUSSELL L.
Принадлежит: Kennametal Inc., KENNAMETAL INC, KENNAMETAL INC.

A ceramic body that includes between about 15 volume percent and about 35 volume percent of a boron carbide irregular-shaped phase, and at least about 50 volume percent alumina, and the ceramic body has a fracture toughness (KIC, 18.5 Kg Load E&C) greater than or equal to about 4.5 MPa.m0.5.

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Номер записи: 7
18-07-2017 дата публикации

Method of making textured ceramics

Номер: US0009708224B2
Автор: Shanghua Wu, Qiangguo Jiang, Weiming Guo, Shangxian Gu, Maopeng Zhou, Wei Liu, Lixia Cheng, Bo Wang, Chengyong Wang, Qimin Wang, WU SHANGHUA, JIANG QIANGGUO, GUO WEIMING, GU SHANGXIAN, ZHOU MAOPENG, LIU WEI, CHENG LIXIA, WANG BO, WANG CHENGYONG, WANG QIMIN, Wu Shanghua, Jiang Qiangguo, Guo Weiming, Gu Shangxian, Zhou Maopeng, Liu Wei, Cheng Lixia, Wang Bo, Wang Chengyong, Wang Qimin
Принадлежит: DONGGUAN SOUTH CHINA DESIGN AND INNOVATION INST., GUANGDONG UNIVERSITY OF TECHNOLOGY, DONGGUAN SOUTH CHINA DESIGN AND INNOVATION INST, UNIV GUANGDONG TECHNOLOGY, Dongguan South China Design and Innovation Institute, Guangdong University of Technology

The invention proposed a novel hot pressing flowing sintering method to fabricate textured ceramics. The perfectly 2-dimensional textured Si3N4 ceramics (Lotgering orientation factor fL 0.9975) were fabricated by this method. During the initial sintering stage, the specimen flowed along the plane which is perpendicular to the hot pressing direction under pressure, through the controlling of the graphite die movement. The rod-like β-Si3N4 nuclei was easily to texture during the flowing process, due to the small size of the β-Si3N4 nuclei and the high porosity of the flowing specimen. After aligned, the β-Si3N4 grains grew along the materials flowing direction with little constraint. textured Si3N4 ceramics fabricated by this invention also showed high aspect ratio. Compared to the conventional hot-forging technique which contained the sintering and forging processes, hot pressing flowing sintering proposed is simpler and lower cost to fabricate textured Si3N4.

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Номер записи: 8
26-02-2008 дата публикации

Method of machining a workpiece using a ceramic cutting insert including alumina and boron carbide

Номер: US0007335615B2
Автор: Russell L. Yeckley, Shanghua Wu, YECKLEY RUSSELL L, WU SHANGHUA, YECKLEY RUSSELL L.
Принадлежит: Kennametal Inc., KENNAMETAL INC, KENNAMETAL INC.

A method of machining a workpiece including the steps of providing a workpiece; providing a ceramic cutting insert having a rake surface and a flank surface wherein the rake surface and the flank surface intersect to form a cutting edge and the ceramic cutting insert having a substrate that comprises between about 15 volume percent and about 35 volume percent of a boron carbide phase and at least about 50 volume percent alumina and has a fracture toughness (K IC , 18.5 Kg Load E&C) greater than or equal to about 4.5 MPa·m 0.5 ; causing relative rotational movement between the workpiece and the ceramic cutting insert wherein the surface speed of the relative rotational movement is equal to or greater than about 457 surface meters per minute; and bringing the ceramic cutting insert and the workpiece into contact with each other so as to remove material from the workpiece.

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Номер записи: 9
01-03-2016 дата публикации

Light weight proppant with improved strength and methods of making same

Номер: US0009273243B2
Автор: Dilip Chatterjee, Jody Pham, Shanghua Wu, Yuming Xie, Christopher E. Coker
Принадлежит: Halliburton Energy Services, Inc.

Methods are described to make strong, tough, and/or lightweight glass-ceramic composites having a crystalline phase and an amorphous phase generated by viscous reaction sintering of a complex mixture of oxides and other materials. The present invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.

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Номер записи: 10
17-05-2007 дата публикации

Method of machining a workpiece using a ceramic cutting insert including alumina and boron carbide

Номер: US20070107569A1
Автор: Russell Yeckley, Shanghua Wu
Принадлежит: Kennametal Inc.

A method of machining a workpiece including the steps of providing a workpiece; providing a ceramic cutting insert having a rake surface and a flank surface wherein the rake surface and the flank surface intersect to form a cutting edge and the ceramic cutting insert having a substrate that comprises between about 15 volume percent and about 35 volume percent of a boron carbide phase and at least about 50 volume percent alumina and has a fracture toughness (KIC, 18.5 Kg Load E&C) greater than or equal to about 4.5 MPa·m0.5; causing relative rotational movement between the workpiece and the ceramic cutting insert wherein the surface speed of the relative rotational movement is equal to or greater than about 457 surface meters per minute; and bringing the ceramic cutting insert and the workpiece into contact with each other so as to remove material from the workpiece.

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Номер записи: 11
19-06-2018 дата публикации

Ceramic particles with controlled pore and/or microsphere placement and/or size and method of making same

Номер: US0010000690B2
Автор: Shanghua Wu, Yuming Xie, Christopher E. Coker, Dilip Chatterjee, WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, CHATTERJEE DILIP, Wu, Shanghua, Xie, Yuming, Coker, Christopher E., Chatterjee, Dilip
Принадлежит: Halliburton Energy Services, Inc., HALLIBURTON ENERGY SERVICES INC

The present invention relates to lightweight high strength microsphere containing ceramic particles having controlled microsphere placement and/or size and microsphere morphology, which produces an improved balance of specific gravity and crush strength such that they can be used in applications such as proppants to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more microsphere containing ceramic particles of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the microsphere containing ceramic particles of the present invention are further disclosed, as well as methods of making the microsphere containing ceramic particles.

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Номер записи: 12
09-08-2016 дата публикации

Ceramic particles with controlled pore and/or microsphere placement and/or size and method of making same

Номер: US0009410078B2
Автор: Shanghua Wu, Yuming Xie, Christopher E. Coker, Dilip Chatterjee, WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, CHATTERJEE DILIP, Wu Shanghua, Xie Yuming, Coker Christopher E., Chatterjee Dilip
Принадлежит: Halliburton Energy Services, Inc., HALLIBURTON ENERGY SERVICES INC

The present invention relates to lightweight high strength microsphere containing ceramic particles having controlled microsphere placement and/or size and microsphere morphology, which produces an improved balance of specific gravity and crush strength such that they can be used in applications such as proppants to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more microsphere containing ceramic particles of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the microsphere containing ceramic particles of the present invention are further disclosed, as well as methods of making the microsphere containing ceramic particles.

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Номер записи: 13
06-05-2008 дата публикации

Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same

Номер: US0007368406B2
Автор: Russell L. Yeckley, Shanghua Wu, YECKLEY RUSSELL L, WU SHANGHUA, YECKLEY RUSSELL L.
Принадлежит: Kennametal Inc., KENNAMETAL INC, KENNAMETAL INC.

A ceramic body, as well as a method for making the same, wherein the ceramic body contains aluminum oxynitride and whiskers, (and optionally) one or more of titanium carbonitride, and/or alumina, and/or zirconia, and/or other component(s).

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Номер записи: 14
05-02-2004 дата публикации

Ceramic body reinforced with coarse silicon carbide whiskers and method for making the same

Номер: US20040023788A1
Автор: Pankaj Mehrotra, Shanghua Wu
Принадлежит: Kennametal Inc.

A ceramic composite made by compacting a starting powder blend. The composite includes between about 50 volume percent and about 99 volume percent of a ceramic matrix; and between about 1 volume percent and about 50 volume percent as-processed silicon carbide whiskers. The ceramic composite having a fracture toughness (K IC ) of greater than about 4.0 MPam 1/2 . The ceramic has a silicon carbide whisker density as measured in whiskers per square millimeter equal to or less than about 1500 times the volume percent of silicon carbide whiskers, but in a density sufficient for the ceramic composite to have the fracture toughness.

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Номер записи: 15
20-05-2014 дата публикации

Ceramic particles with controlled pore and/or microsphere placement and/or size and method of making same

Номер: US0008728991B2
Автор: Shanghua Wu, Yuming Xie, Christopher E. Coker, Dilip Chatterjee, WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, CHATTERJEE DILIP, COKER CHRISTOPHER E.
Принадлежит: Oxane Materials, Inc., WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, CHATTERJEE DILIP, OXANE MATERIALS INC, COKER CHRISTOPHER E., OXANE MATERIALS, INC.

The present invention relates to lightweight high strength microsphere containing ceramic particles having controlled microsphere placement and/or size and microsphere morphology, which produces an improved balance of specific gravity and crush strength such that they can be used in applications such as proppants to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more microsphere containing ceramic particles of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the microsphere containing ceramic particles of the present invention are further disclosed, as well as methods of making the microsphere containing ceramic particles.

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Номер записи: 16
26-07-2012 дата публикации

Extrusion Process For Proppant Production

Номер: US20120190597A1
Автор: Dilip K. Chatterjee, Shanghua Wu, Yuming Xie, Christopher E. Coker, Robert D. Skala, CHATTERJEE DILIP K, WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, SKALA ROBERT D, CHATTERJEE DILIP K., COKER CHRISTOPHER E., SKALA ROBERT D.
Принадлежит: OXANE MATERIALS, INC.

An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.

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Номер записи: 17
15-08-2013 дата публикации

Light Weight Proppant With Improved Strength And Methods Of Making Same

Номер: US20130206408A1
Автор: Dilip Chatterjee, Jody Pham, Shanghua Wu, Yuming Xie, Christopher E. Coker
Принадлежит: OXANE MATERIALS, INC.

Methods are described to make strong, tough, and/or lightweight glass-ceramic composites having a crystalline phase and an amorphous phase generated by viscous reaction sintering of a complex mixture of oxides and other materials. The present invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses. 1. A method for producing a proppant comprising i. at least one metal oxide or precursor thereof that is capable of forming a crystalline phase in said proppant, and', 'ii. at least one amorphous material containing at least one entrapped vaporizable material, and', 'iii. at least one fluxing agent, 'a. forming a green body from a green body material comprising'}b. reactive sintering said green body under reactive sintering conditions to form a sintered body comprising at least one crystalline phase, at least one amorphous phase, and having gas bubbles contained therein, and wherein said gas bubbles are optionally at least partially surrounded by at least one glassy compound, and a majority of said gas bubbles are not in contact with each other.2. The method of claim 1 , wherein said metal oxide or precursor thereof comprises aluminum hydroxide claim 1 , bauxite claim 1 , gibbsite claim 1 , boehmite claim 1 , or diaspore claim 1 , or any combination thereof.3. The method of claim 1 , wherein said metal oxide or precursor thereof has a particle size distribution claim 1 , d claim 1 , of from about 0.5 to about 15 claim 1 , wherein claim 1 , d={(d−d)/d} wherein dis a particle size wherein 10% of the particles have a smaller particle size claim 1 , dis a median particle size wherein 50% of the particles have a smaller particle size claim 1 , and dis a particle size wherein 90% of the particle volume has a smaller particle size.4. (canceled)5. The method of claim 3 , wherein the median particle size claim 3 , d claim 3 , is from about 0.01 μm to about 100 μm.6. (canceled)7. The method of claim 1 , ...

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Номер записи: 18
04-08-2016 дата публикации

LIGHT WEIGHT PROPPANT WITH IMPROVED STRENGTH AND METHODS OF MAKING SAME

Номер: US20160222281A1
Автор: Dilip Chatterjee, Jody Pham, Shanghua Wu, Yuming Xie, Christopher E. Coker, CHATTERJEE DILIP, PHAM JODY, WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, Chatterjee Dilip, Pham Jody, Wu Shanghua, Xie Yuming, Coker Christopher E.
Принадлежит: Halliburton Energy Services, Inc.

Methods are described to make strong, tough, and/or lightweight glass-ceramic composites having a crystalline phase and an amorphous phase generated by viscous reaction sintering of a complex mixture of oxides and other materials. The present invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.

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Номер записи: 19
20-04-2006 дата публикации

Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same

Номер: US20060084565A1
Автор: Russell Yeckley, Shanghua Wu
Принадлежит:

A ceramic body, as well as a method for making the same, wherein the ceramic body contains aluminum oxynitride and whiskers, (and optionally) one or more of titanium carbonitride, and/or alumina, and/or zirconia, and/or other component(s).

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Номер записи: 20
14-06-2005 дата публикации

Ceramic body reinforced with coarse silicon carbide whiskers and method for making the same

Номер: US0006905992B2
Автор: Pankaj K. Mehrotra, Shanghua Wu, MEHROTRA PANKAJ K, WU SHANGHUA, MEHROTRA PANKAJ K.
Принадлежит: Kennametal Inc., KENNAMETAL INC, KENNAMETAL INC.

A ceramic composite made by compacting a starting powder blend. The composite includes between about 50 volume percent and about 99 volume percent of a ceramic matrix; and between about 1 volume percent and about 50 volume percent as-processed silicon carbide whiskers. The ceramic composite having a fracture toughness (KIC) of greater than about 4.0 MPam1/2. The ceramic has a silicon carbide whisker density as measured in whiskers per square millimeter equal to or less than about 1500 times the volume percent of silicon carbide whiskers, but in a density sufficient for the ceramic composite to have the fracture toughness.

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Номер записи: 21
22-03-2016 дата публикации

Al2O3 or Al2O3-contained multilayer coatings for silicon nitride cutting tools by physical vapor deposition and methods of making the same

Номер: US0009290847B2
Автор: Shanghua Wu, Ying Long, Qimin Wang, Chengyong Wang, WU SHANGHUA, LONG YING, WANG QIMIN, WANG CHENGYONG
Принадлежит: GUANGDONG UNIVERSITY OF TECHNOLOGY, UNIV GUANGDONG TECHNOLOGY

The present invention provides an Al2O3 coated Si3N4 cutting tool comprising a Si3N4 based substrate body and a coating layer on the substrate body, wherein the coating layer has at least one Al2O3 coating layer consisting of amorphous Al2O3 or nanocrystalline -, -, or -Al2O3. The hard and wear resistant refractory coating is deposited onto the Si3N4-based substrate body by reactive sputtering using bipolar pulsed DMS technique or dual magnetron sputtering method at substrate temperatures of 300-700° C. During the deposition, preferably, the substrate temperature is controlled to achieve the desired crystal structure of the coating. To form amorphous Al2O3 coating on the surface of the substrates, the deposition temperature can be controlled from 300 to 500° C.; on the other hand, to form nanocrystalline -, -, or -Al2O3, the deposition temperature can be controlled in the range of 500-700° C. The coated cutting tools of the present invention are suitable for high-speed machining of metals ...

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Номер записи: 22
30-06-2005 дата публикации

Ceramic body reinforced with coarse silicon carbide whiskers and method for making the same

Номер: US20050143251A1
Автор: Pankaj Mehrotra, Shanghua Wu
Принадлежит: MEHROTRA PANKAJ K., Shanghua Wu

A ceramic composite made by compacting a starting powder blend. The composite includes between about 50 volume percent and about 99 volume percent of a ceramic matrix; and between about 1 volume percent and about 50 volume percent as-processed silicon carbide whiskers. The ceramic composite having a fracture toughness (K IC ) of greater than about 4.0 MPam 1/2 . The ceramic has a silicon carbide whisker density as measured in whiskers per square millimeter equal to or less than about 1500 times the volume percent of silicon carbide whiskers, but in a density sufficient for the ceramic composite to have the fracture toughness.

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Номер записи: 23
15-05-2007 дата публикации

Alumina-boron carbide ceramics and methods of making and using the same

Номер: US0007217674B2
Автор: Russell L. Yeckley, Shanghua Wu, YECKLEY RUSSELL L, WU SHANGHUA, YECKLEY RUSSELL L.
Принадлежит: Kennametal Inc., KENNAMETAL INC, KENNAMETAL INC.

A ceramic body, as well as a method of making the ceramic body, wherein in one aspect a hot-pressing method is used to produce the ceramic body. In another aspect, a sintering to full density method is used to produce the ceramic body. The hot-pressed ceramic body contains between about 15 volume percent and about 35 volume percent of a boron carbide phase and at least about 50 volume percent of alumina, and the substrate has a fracture toughness (KIC, 18.5 Kg Load E&C) greater than or equal to about 4.5 MPa.m0.5. The sintered to full density ceramic body contains between about 15 volume percent and about 50 volume percent of a boron carbide irregular-shaped phase and at least about 50 volume percent alumina. The substrate further includes at least one of the following components (a) through (b) wherein the sum of the amounts of components (a) and (b) is equal to an effective amount to achieve full densification wherein components (a) and (b) include (a) a metal component ...

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Номер записи: 24
24-08-2006 дата публикации

Alumina-boron carbide ceramics and methods of making and using the same

Номер: US20060188348A1
Автор: Russel Yeckley, Shanghua Wu
Принадлежит: Kennametal Inc.

A ceramic body, as well as a method of making the ceramic body, wherein in one aspect a hot-pressing method is used to produce the ceramic body. In another aspect, a sintering to full density method is used to produce the ceramic body. The hot-pressed ceramic body contains between about 15 volume percent and about 35 volume percent of a boron carbide phase and at least about 50 volume percent of alumina, and the substrate has a fracture toughness (KIC, 18.5 Kg Load E&C) greater than or equal to about 4.5 MPa·m0.5. The sintered to full density ceramic body contains between about 15 volume percent and about 50 volume percent of a boron carbide irregular-shaped phase and at least about 50 volume percent alumina. The substrate further includes at least one of the following components (a) through (b) wherein the sum of the amounts of components (a) and (b) is equal to an effective amount to achieve full densification wherein components (a) and (b) include (a) a metal component including one ...

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Номер записи: 25
18-12-2007 дата публикации

Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same

Номер: US0007309475B2
Автор: Russeli L. Yeckley, Shanghua Wu, YECKLEY RUSSELI L, WU SHANGHUA, YECKLEY RUSSELI L.
Принадлежит: Kennametal Inc., KENNAMETAL INC, KENNAMETAL INC.

A process of making aluminum oxynitride powder including the steps of: forming a powder mixture by mixing alumina powder and aluminum nitride powder according to the following formula: ((4-x)/3) alumina and x aluminum nitride wherein x is in mole percent and ranges between about 0.31 and about 0.61; adding between about 0.1 mole percent and about 1.0 mole percent of pure aluminum powder to the powder mixture; and reacting the powder mixture containing aluminum at a temperature between about 1600° C. and about 1900° C. for a duration between about 2 hours and about 24 hours in a flowing nitrogen atmosphere so as to form aluminum oxynitride.

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Номер записи: 26
19-01-2017 дата публикации

Method of making textured ceramics

Номер: US20170015593A1
Автор: Shanghua Wu, Qiangguo Jiang, Weiming Guo, Shangxian Gu, Maopeng Zhou, Wei Liu, Lixia Cheng, Bo Wang, Chengyong Wang, Qimin Wang, WU SHANGHUA, JIANG QIANGGUO, GUO WEIMING, GU SHANGXIAN, ZHOU MAOPENG, LIU WEI, CHENG LIXIA, WANG BO, WANG CHENGYONG, WANG QIMIN, Wu Shanghua, Jiang Qiangguo, Guo Weiming, Gu Shangxian, Zhou Maopeng, Liu Wei, Cheng Lixia, Wang Bo, Wang Chengyong, Wang Qimin
Принадлежит: Dongguan South China Design and Innovation Institute, GUANGDONG UNIVERSITY OF TECHNOLOGY

The invention proposed a novel hot pressing flowing sintering method to fabricate textured ceramics. The perfectly 2-dimensional textured Si3N4 ceramics (Lotgering orientation factor fL 0.9975) were fabricated by this method. During the initial sintering stage, the specimen flowed along the plane which is perpendicular to the hot pressing direction under pressure, through the controlling of the graphite die movement. The rod-like β-Si3N4 nuclei was easily to texture during the flowing process, due to the small size of the β-Si3N4 nuclei and the high porosity of the flowing specimen. After aligned, the β-Si3N4 grains grew along the materials flowing direction with little constraint. textured Si3N4 ceramics fabricated by this invention also showed high aspect ratio. Compared to the conventional hot-forging technique which contained the sintering and forging processes, hot pressing flowing sintering proposed is simpler and lower cost to fabricate textured Si3N4.

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Номер записи: 27
28-08-2007 дата публикации

Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same

Номер: US0007262145B2
Автор: Russell L. Yeckley, Shanghua Wu, YECKLEY RUSSELL L, WU SHANGHUA, YECKLEY RUSSELL L.
Принадлежит: Kennametal Inc., KENNAMETAL INC, KENNAMETAL INC.

A ceramic body, as well as a method for making the same, wherein the ceramic body contains aluminum oxynitride and whiskers, (and optionally) one or more of titanium carbonitride, and/or alumina, and/or zirconia, and/or other component(s).

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Номер записи: 28
05-01-2016 дата публикации

Extrusion process for proppant production

Номер: US0009227874B2
Автор: Dilip K. Chatterjee, Shanghua Wu, Yuming Xie, Christopher E. Coker, Robert D. Skala, CHATTERJEE DILIP K, WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, SKALA ROBERT D, CHATTERJEE DILIP K., COKER CHRISTOPHER E., SKALA ROBERT D.
Принадлежит: Halliburton Energy Services, Inc., CHATTERJEE DILIP K, WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, SKALA ROBERT D, HALLIBURTON ENERGY SERVICES INC, CHATTERJEE DILIP K., COKER CHRISTOPHER E., SKALA ROBERT D., HALLIBURTON ENERGY SERVICES, INC.

An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.

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Номер записи: 29
24-10-2017 дата публикации

Light weight proppant with improved strength and methods of making same

Номер: US0009796915B2
Автор: Shanghua Wu, Jody Pham, Yuming Xie, Dilip K. Chatterjee, Andrew Miller, Christopher E. Coker, WU SHANGHUA, PHAM JODY, XIE YUMING, CHATTERJEE DILIP K, MILLER ANDREW, COKER CHRISTOPHER E, Wu Shanghua, Pham Jody, Xie Yuming, Chatterjee Dilip K., Miller Andrew, Coker Christopher E.
Принадлежит: Halliburton Energy Services, Inc., HALLIBURTON ENERGY SERVICES INC

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

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Номер записи: 30
07-01-2014 дата публикации

High lifetime consumable silicon nitride-silicon dioxide plasma processing components

Номер: US0008622021B2
Автор: Travis R. Taylor, Mukund Srinivasan, Bobby Kadkhodayan, K. Y. Ramanujam, Biljana Mikijelj, Shanghua Wu, TAYLOR TRAVIS R, SRINIVASAN MUKUND, KADKHODAYAN BOBBY, RAMANUJAM K Y, MIKIJELJ BILJANA, WU SHANGHUA, TAYLOR TRAVIS R., RAMANUJAM K. Y.
Принадлежит: Lam Research Corporation, Ceradyne Inc., TAYLOR TRAVIS R, SRINIVASAN MUKUND, KADKHODAYAN BOBBY, RAMANUJAM K Y, MIKIJELJ BILJANA, WU SHANGHUA, LAM RES CORP, CERADYNE INC, TAYLOR TRAVIS R., RAMANUJAM K. Y., LAM RESEARCH CORPORATION, CERADYNE INC.

A method of increasing mean time between cleans of a plasma etch chamber and chamber parts lifetimes is provided. Semiconductor substrates are plasma etched in the chamber while using at least one sintered silicon nitride component exposed to ion bombardment and/or ionized halogen gas. The sintered silicon nitride component includes high purity silicon nitride and a sintering aid consisting of silicon dioxide. A plasma processing chamber is provided including the sintered silicon nitride component. A method of reducing metallic contamination on the surface of a silicon substrate during plasma processing is provided with a plasma processing apparatus including one or more sintered silicon nitride components. A method of manufacturing a component exposed to ion bombardment and/or plasma erosion in a plasma etch chamber, comprising shaping a powder composition consisting of high purity silicon nitride and silicon dioxide and densifying the shaped component.

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Номер записи: 31
24-03-2016 дата публикации

Extrusion Process for Proppant Production

Номер: US20160083645A1
Автор: Dilip K. Chatterjee, Shanghua Wu, Yuming Xie, Christopher E. Coker, Robert D. Skala
Принадлежит: Halliburton Energy Services, Inc.

An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants. 1. An apparatus for producing a proppant comprisinga. a means for forming an intimate mixture of one or more green body materials, andb. a means to produce a green body extrudate, andc. a means for separating and shaping said green body extrudate into individual green bodies, andd. a means to sinter said green bodies.2. The apparatus of claim 1 , wherein said means to produce a green body extrudate comprises a flow or material movement of one or more green body materials and pressure or force delivered to an extrusion chamber wherein said one or more green body materials form said green body extrudate.3. The apparatus of claim 2 , wherein said flow or material movement of one or more green body materials and pressure or force is supplied by gravity claim 2 , a rotating screw claim 2 , twin rotating screws claim 2 , shear-driven methods that integrate a mixing function with desired material movement claim 2 , a piston claim 2 , a ram claim 2 , peristalsis claim 2 , vibration claim 2 , centrifugal forces claim 2 , or any combination thereof.4. The apparatus of claim 3 , wherein said twin rotating screws are co-rotating or counter-rotating.5. The apparatus of claim 2 , wherein said extrusion chamber comprises a volume where a plurality of green body materials flow or move together in substantially the same ...

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Номер записи: 32
07-06-2007 дата публикации

Ceramic body containing alumina and boron carbide

Номер: US20070129232A1
Автор: Russell Yeckley, Shanghua Wu
Принадлежит:

A ceramic body that includes between about 15 volume percent and about 35 volume percent of a boron carbide irregular-shaped phase, and at least about 50 volume percent alumina, and the ceramic body has a fracture toughness (KIC, 18.5 Kg Load E&C) greater than or equal to about 4.5 MPa·m0.5.

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Номер записи: 33
27-01-2011 дата публикации

HIGH LIFETIME CONSUMABLE SILICON NITRIDE-SILICON DIOXIDE PLASMA PROCESSING COMPONENTS

Номер: US20110021031A1
Автор: Travis R. Taylor, Mukund Srinivasan, Bobby Kadkhodayan, K.Y. Ramanujam, Biljana Mikijelj, Shanghua Wu
Принадлежит:

A method of increasing mean time between cleans of a plasma etch chamber and chamber parts lifetimes is provided. Semiconductor substrates are plasma etched in the chamber while using at least one sintered silicon nitride component exposed to ion bombardment and/or ionized halogen gas. The sintered silicon nitride component includes high purity silicon nitride and a sintering aid consisting of silicon dioxide. A plasma processing chamber is provided including the sintered silicon nitride component. A method of reducing metallic contamination on the surface of a silicon substrate during plasma processing is provided with a plasma processing apparatus including one or more sintered silicon nitride components. A method of manufacturing a component exposed to ion bombardment and/or plasma erosion in a plasma etch chamber, comprising shaping a powder composition consisting of high purity silicon nitride and silicon dioxide and densifying the shaped component.

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Номер записи: 34
26-01-2017 дата публикации

Ceramic Particles With Controlled Pore and/or Microsphere Placement and/or Size and Method of Making Same

Номер: US20170022410A1
Автор: Shanghua Wu, Yuming Xie, Christopher E. Coker, Dilip Chatterjee, WU SHANGHUA, XIE YUMING, COKER CHRISTOPHER E, CHATTERJEE DILIP, Wu Shanghua, Xie Yuming, Coker Christopher E., Chatterjee Dilip
Принадлежит: Halliburton Energy Services, Inc.

The present invention relates to lightweight high strength microsphere containing ceramic particles having controlled microsphere placement and/or size and microsphere morphology, which produces an improved balance of specific gravity and crush strength such that they can be used in applications such as proppants to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more microsphere containing ceramic particles of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the microsphere containing ceramic particles of the present invention are further disclosed, as well as methods of making the microsphere containing ceramic particles. 135.-. (canceled)36. A method for producing proppants , wherein said method comprises filtering by membrane filtration one or more of the starting materials that form said proppant , and then forming a green body from said starting materials that have been filtered by membrane filtration and then sintering said green body to form a sintered body.37. The method of claim 36 , wherein said membrane filtration is a cross flow membrane separation.38. The method of claim 36 , wherein said membrane filtration is a dead end filtration.39. A method for producing microsphere and/or pore formers comprising the steps ofa. producing a microsphere and/or pore former templates of a predetermined size, andb. selecting a subset of said microsphere and/or pore former templates, andc. coating said selected subset of said sized microsphere and/or pore former templates with inorganic or organic materials.40. The method of claim 39 , wherein said selecting a subset of said sized microsphere and/or pore former templates is produced by means comprising screening claim 39 , filtration claim 39 , air separation claim 39 , sedimentation claim 39 , impingement claim 39 , floatation claim 39 , and any combination thereof.41. A microsphere ...

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Номер записи: 35
24-05-2007 дата публикации

Process for making a ceramic body containing alumina and boron carbide

Номер: US20070114705A1
Автор: Russell Yeckley, Shanghua Wu
Принадлежит: Kennametal Inc.

A process for making a ceramic body that includes the following steps: providing a starting powder mixture, the starting powder mixture comprises between about 15 volume percent and about 35 volume percent boron carbide powder and at least about 50 volume percent alumina powder and no more than about 5 volume percent of a sintering aid; and consolidating the powder mixture at a temperature equal to between about 1400 degrees Centigrade and 1850 degrees Centigrade to achieve a ceramic with a density equal to greater than 99 percent of theoretical density.

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Номер записи: 36
24-08-2006 дата публикации

Alumina-boron carbide ceramics and methods of making and using the same

Номер: US20060189474A1
Автор: Russell Yeckley, Shanghua Wu
Принадлежит:

A ceramic body that contains between about 15 volume percent and about 35 volume percent of a boron carbide irregular-shaped phase and at least about 50 volume percent of alumina. The substrate has a fracture toughness (KIC, 18.5 Kg Load E&C) greater than or equal to about 4.5 MPa·m0.5.

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Номер записи: 37
19-09-2013 дата публикации

Light Weight Proppant With Improved Strength And Methods Of Making Same

Номер: US20130244914A1
Автор: Shanghua Wu, Jody Pham, Yuming Xie, Dilip K. Chatterjee, Andrew Miiller, Christopher E. Coker
Принадлежит: OXANE MATERIALS, INC.

Methods are described to make strong, tough, and lightweight whisker-reinforced glass-ceramic composites through a self-toughening structure generated by viscous reaction sintering of a complex mixture of oxides. The invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses. 1. A method for producing a proppant comprising i. at least one metal oxide or precursor thereof that is capable of forming whiskers in said proppant and as part of said proppant,', 'ii. at least one amorphous material containing at least one entrapped vaporizable material,', 'iii. preformed whiskers, and', 'iv. at least one whisker promoter, optionally in the absence of fluorine or fluorine compounds;, 'a. forming a green body from a green body material comprising'}b. reactive sintering said green body under reactive sintering conditions to form a sintered body comprising whiskers and at least one amorphous phase.24-. (canceled)5. The method of claim 1 , wherein said at least one metal oxide comprises a first metal oxide and a second metal oxide claim 1 , wherein said first metal oxide and said second metal oxide are different from each other.6. (canceled)7. The method of claim 1 , wherein said amorphous material comprises perlite claim 1 , stober silica claim 1 , pumice claim 1 , andesite claim 1 , scoria claim 1 , volcanic glasses claim 1 , or any combination thereof.8. The method of claim 7 , wherein said vaporizable material comprises water (HO) carbon dioxide (CO) claim 7 , sulfur dioxide (SO) claim 7 , hydrogen sulfide (HS) claim 7 , nitrogen claim 7 , argon claim 7 , helium claim 7 , neon claim 7 , methane claim 7 , carbon monoxide (CO) claim 7 , hydrogen claim 7 , oxygen claim 7 , hydrogen chloride (HCl) claim 7 , hydrogen fluoride (HF) claim 7 , hydrogen bromide (HBr) claim 7 , nitrogen oxide (NOx) claim 7 , sulfur hexafluoride (SF) claim 7 , carbonyl sulfide (COS) claim 7 , volcanic gases claim 7 , or any ...

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Номер записи: 38
03-02-2009 дата публикации

Method for making silicon carbide whiskers

Номер: US0007485278B2
Автор: Pankaj K. Mehrotra, Shanghua Wu, MEHROTRA PANKAJ K, WU SHANGHUA, MEHROTRA PANKAJ K.
Принадлежит: Kennametal Inc., KENNAMETAL INC, KENNAMETAL INC.

A ceramic composite made by compacting a starting powder blend. The composite includes between about 50 volume percent and about 99 volume percent of a ceramic matrix; and between about 1 volume percent and about 50 volume percent as-processed silicon carbide whiskers. The ceramic composite having a fracture toughness (KIC) of greater than about 4.0 MPam1/2. The ceramic has a silicon carbide whisker density as measured in whiskers per square millimeter equal to or less than about 1500 times the volume percent of silicon carbide whiskers, but in a density sufficient for the ceramic composite to have the fracture toughness.

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Номер записи: 39
27-10-2005 дата публикации

Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same

Номер: US20050239629A1
Автор: Russell Yeckley, Shanghua Wu
Принадлежит:

A ceramic body, as well as a method for making the same, wherein the ceramic body contains aluminum oxynitride and whiskers, (and optionally) one or more of titanium carbonitride, and/or alumina, and/or zirconia, and/or other component(s).

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Номер записи: 40
24-08-2006 дата публикации

Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same

Номер: US20060188426A1
Автор: Russeli Yeckley, Shanghua Wu
Принадлежит: Kennametal Inc.

A process of making aluminum oxynitride powder including the steps of: forming a powder mixture by mixing alumina powder and aluminum nitride powder according to the following formula: ((4−x)/3) alumina and x aluminum nitride wherein x is in mole percent and ranges between about 0.31 and about 0.61; adding between about 0.1 mole percent and about 1.0 mole percent of pure aluminum powder to the powder mixture; and reacting the powder mixture containing aluminum at a temperature between about 1600° C. and about 1900° C. for a duration between about 2 hours and about 24 hours in a flowing nitrogen atmosphere so as to form aluminum oxynitride.

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Номер записи: 41
09-02-2006 дата публикации

Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same

Номер: US20060030474A1
Автор: Russell Yeckley, Shanghua Wu
Принадлежит:

A ceramic body, as well as a method for making the same, wherein the ceramic body contains aluminum oxynitride and whiskers, (and optionally) one or more of titanium carbonitride, and/or alumina, and/or zirconia, and/or other component(s).

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Номер записи: 42
26-06-2014 дата публикации

AL2O3 OR AL2O3-CONTAINED MULTILAYER COATINGS FOR SILICON NITRIDE CUTTING TOOLS BY PHYSICAL VAPOR DEPOSITION AND METHODS OF MAKING THE SAME

Номер: US20140178659A1
Автор: LONG Ying, WANG Chengyong, WANG Qimin, Wu Shanghua
Принадлежит:

The present invention provides an AlOcoated SiNcutting tool comprising a SiNbased substrate body and a coating layer on the substrate body, wherein the coating layer has at least one AlOcoating layer consisting of amorphous AlOor nanocrystalline α-, γ-, or κ-AlO. The hard and wear resistant refractory coating is deposited onto the SiN-based substrate body by reactive sputtering using bipolar pulsed DMS technique or dual magnetron sputtering method at substrate temperatures of 300-700° C. During the deposition, preferably, the substrate temperature is controlled to achieve the desired crystal structure of the coating. To form amorphous AlOcoating on the surface of the substrates, the deposition temperature can be controlled from 300 to 500° C.; on the other hand, to form nanocrystalline α-, γ-, or κ-AlO, the deposition temperature can be controlled in the range of 500-700° C. The coated cutting tools of the present invention are suitable for high-speed machining of metals by turning, milling, drilling or by other similar chip-forming machining methods. 1. An AlOcoated SiNcutting tool comprising a SiNbased substrate body and a coating layer on the substrate body , wherein the coating layer has at least one AlOcoating layer consisting of amorphous AlOor nanocrystalline α- , γ- , or κ-AlO.2. The AlOcoated SiNcutting tool of claim 1 , wherein the AlOcoating layer is deposited utilizing reactive sputtering by bipolar pulsed DMS technique or dual magnetron sputtering conductive AlOceramic target formed by doping conductive material in AlO.3. The AlOcoated SiNcutting tool of claim 2 , wherein the AlOcoating layer is deposited utilizing reactive sputtering of Al cathode in an Ogas or a gas mixture of Ar and Owith process pressure of 0.1-2 Pa at substrate temperature of 300-700° C. by bipolar pulsed DMS technique.4. The AlOcoated SiNcutting tool of claim 2 , wherein the AlOcoating layer is deposited by sputtering conductive AlOceramic target in an Ar gas or a gas mixture of ...

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Номер записи: 43
04-09-2014 дата публикации

Ceramic Particles With Controlled Pore And/Or Microsphere Placement And/Or Size And Method Of Making Same

Номер: US20140249058A1
Автор: Chatterjee Dilip, Coker Christopher E., Wu Shanghua, Xie Yuming
Принадлежит: Oxane Materials, Inc.

The present invention relates to lightweight high strength microsphere containing ceramic particles having controlled microsphere placement and/or size and microsphere morphology, which produces an improved balance of specific gravity and crush strength such that they can be used in applications such as proppants to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more microsphere containing ceramic particles of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the microsphere containing ceramic particles of the present invention are further disclosed, as well as methods of making the microsphere containing ceramic particles. 135-. (canceled)36. A method for producing proppants , wherein said method comprises filtering by membrane filtration one or more of the starting materials that form said proppant , and then forming a green body from said starting materials that have been filtered by membrane filtration and then sintering said green body to form a sintered body.37. The method of claim 36 , wherein said membrane filtration is a cross flow membrane separation.38. The method of claim 36 , wherein said membrane filtration is a dead end filtration.39. A method for producing microsphere and/or pore formers comprising the steps ofa. producing microsphere and/or pore former templates of a predetermined size, andb. selecting a subset of said sized microsphere and/or pore former templates, andc. coating said selected subset of said sized microsphere and/or pore former templates with inorganic or organic materials.40. The method of claim 39 , wherein said selecting a subset of said sized microsphere and/or pore former templates is produced by means comprising screening claim 39 , filtration claim 39 , air separation claim 39 , sedimentation claim 39 , impingement claim 39 , flotation claim 39 , and any combination thereof.41. A microsphere ...

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Номер записи: 44
08-12-2015 дата публикации

Light weight proppant with improved strength and methods of making same

Номер: CA2812578C
Автор: Christopher E. Coker, Dilip Chatterjee, Jody Pham, Shanghua Wu, Yuming Xie
Принадлежит: Halliburton Energy Services Inc

Methods are described to make strong, tough, and/or lightweight glass-ceramic composites having a crystalline phase and an amorphous phase generated by viscous reaction sintering of a complex mixture of oxides and other materials. The present invention further relates to strong, tough, and lightweight glass-ceramic composites that can be used as proppants and for other uses.

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Номер записи: 45
31-08-2006 дата публикации

Alumina-boron carbide ceramics and methods of making and using the same

Номер: WO2006091951A2
Автор: Russell L. Yeckley, Shanghua Wu
Принадлежит: KENNAMETAL INC.

A ceramic body (20), as well as a hot-pressing method or a sintering to full density method of making the ceramic body (20). The hot-pressed ceramic body (20) contains between about 15 and about 35 volume percent of a boron carbide phase, and at least about 50 volume percent of alumina. The sintered to full density ceramic body (20) contains between about 15 and about 50 volume percent of a boron carbide phase and at least about 50 volume percent alumina. The substrate (21) further includes at least one of the following components (a) through (b) wherein the sum of the amounts of components (a) and (b) is equal to an effective amount to achieve full densification wherein components (a) and (b) include (a) a metal component including one or more of aluminum, magnesium and zinc; and (b) a reduction component containing carbon.

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Номер записи: 46
02-08-2012 дата публикации

Extrusion process for proppant production

Номер: WO2012102982A2
Автор: Christopher F. COKER, Dilip K. Chatterjee, Robert D. Skala, Shanghua Wu, Yuming Xie
Принадлежит: Oxanematerials, Inc.

An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.

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Номер записи: 47
13-03-2018 дата публикации

Extrusion process for proppant production

Номер: CA2824761C
Автор: Christopher F. COKER, Dilip K. Chatterjee, Robert D. Skala, Shanghua Wu, Yuming Xie
Принадлежит: Halliburton Energy Services Inc

An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.

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Номер записи: 48
02-08-2012 дата публикации

Extrusion process for proppant production

Номер: CA2824761A1
Автор: Christopher F. COKER, Dilip K. Chatterjee, Robert D. Skala, Shanghua Wu, Yuming Xie
Принадлежит: Oxane Materials Inc

An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.

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Номер записи: 49
15-08-2013 дата публикации

Extrusion process for proppant production

Номер: AU2012209370A1
Автор: Christopher F. COKER, Dilip K. Chatterjee, Robert D. Skala, Shanghua Wu, Yuming Xie
Принадлежит: Oxane Materials Inc

An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.

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Номер записи: 50
12-12-2013 дата публикации

Ceramic particles with controlled pore and/or microsphere placement and/or size and method of making same

Номер: AU2010336912B2
Автор: Christopher E. Coker, Dilip Chatterjee, Shanghua Wu, Yuming Xie
Принадлежит: Halliburton Energy Services Inc

The present invention relates to lightweight high strength microsphere containing ceramic particles having controlled microsphere placement and/or size and microsphere morphology, which produces an improved balance of specific gravity and crush strength such that they can be used in applications such as proppants to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more microsphere containing ceramic particles of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the microsphere containing ceramic particles of the present invention are further disclosed, as well as methods of making the microsphere containing ceramic particles.

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Номер записи: 51
18-06-2009 дата публикации

High lifetime consumable silicon nitride-silicon dioxide plasma processing components

Номер: WO2009058235A3
Автор: Biljana Mikijelj, Bobby Kadkhodayan, K Y Ramanujam, Mukund Srinivasan, Shanghua Wu, Travis R Taylor
Принадлежит: Biljana Mikijelj, Bobby Kadkhodayan, Ceradyne Inc, K Y Ramanujam, Lam Res Corp, Mukund Srinivasan, Shanghua Wu, Travis R Taylor

A method of increasing mean time between cleans of a plasma etch chamber and chamber parts lifetimes is provided. Semiconductor substrates are plasma etched in the chamber while using at least one sintered silicon nitride component exposed to ion bombardment and/or ionized halogen gas. The sintered silicon nitride component includes high purity silicon nitride and a sintering aid consisting of silicon dioxide. A plasma processing chamber is provided including the sintered silicon nitride component. A method of reducing metallic contamination on the surface of a silicon substrate during plasma processing is provided with a plasma processing apparatus including one or more sintered silicon nitride components. A method of manufacturing a component exposed to ion bombardment and/or plasma erosion in a plasma etch chamber, comprising shaping a powder composition consisting of high purity silicon nitride and silicon dioxide and densifying the shaped component.

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Номер записи: 52
07-07-2011 дата публикации

Ceramic particles with controlled pore and/or microsphere placement and/or size and method of making same

Номер: WO2011082102A1
Автор: Christopher E. Coker, Dilip Chatterjee, Shanghua Wu, Yuming Xie
Принадлежит: Oxane Materials, Inc.

The present invention relates to lightweight high strength microsphere containing ceramic particles having controlled microsphere placement and/or size and microsphere morphology, which produces an improved balance of specific gravity and crush strength such that they can be used in applications such as proppants to prop open subterranean formation fractions. Proppant formulations are further disclosed which use one or more microsphere containing ceramic particles of the present invention. Methods to prop open subterranean formation fractions are further disclosed. In addition, other uses for the microsphere containing ceramic particles of the present invention are further disclosed, as well as methods of making the microsphere containing ceramic particles.

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Номер записи: 53
15-12-2005 дата публикации

Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same

Номер: CA2562031A1
Автор: Russell L. Yeckley, Shanghua Wu
Принадлежит: KENNAMETAL INC., Russell L. Yeckley, Shanghua Wu

A ceramic body (20), as well as a method for making the same, wherein the ceramic body contains aluminum oxynitride and whiskers, (and optionally) one or more of titanium carbonitride, and/or alumina, and/or zirconia, and/or other component(s).

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Номер записи: 54
01-05-2013 дата публикации

Consolidante de peso ligero con resistencia mejorada y metodos para hacerlo.

Номер: MX2013003248A
Автор: Andrew Miiller, Christopher E Coker, Dilip K Chatterjee, Jody Pham, Shanghua Wu, Yuming Xie
Принадлежит: Oxane Materials Inc

Se describen métodos para hacer compuestos de vidrio-cerámica reforzados con filamentos cristalinos fuertes, duros y de peso ligero a través de una estructura de auto-endurecimiento generada mediante la sinterización de reacción viscosa de una mezcla compleja de óxidos. La invención además se relaciona a compuestos de vidrio-cerámica fuertes, duros y de peso ligero que se pueden utilizar como consolidantes y para otros usos.

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Номер записи: 55
09-08-2012 дата публикации

Light weight proppant with improved strength and methods of making same

Номер: WO2012040025A4
Автор: Andrew Miller, Christopher E. Coker, Dilip K. Chatterjee, Jody Pham, Shanghua Wu, Yuming Xie
Принадлежит: Oxane Materials, Inc.

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

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Номер записи: 56
25-04-2013 дата публикации

Light weight proppant with improved strength and methods of making same

Номер: WO2012040025A8
Автор: Andrew Miiller, Christopher E. Coker, Dilip K. Chatterjee, Jody Pham, Shanghua Wu, Yuming Xie
Принадлежит: Oxane Materials, Inc.

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

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Номер записи: 57
31-07-2013 дата публикации

Light weight proppant with improved strength and methods of making same

Номер: EP2619154A2
Автор: Andrew Miller, Christopher E. Coker, Dilip K. Chatterjee, Jody Pham, Shanghua Wu, Yuming Xie
Принадлежит: Oxane Materials Inc

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

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Номер записи: 58
08-08-2024 дата публикации

Marine cable multifunctional integrated software development platform, method, and storage medium

Номер: US20240265161A1
Автор: Dongling GENG, Haitao Hu, Jinlong Chen, Jun Yan, Qi Su, Qingzhen Lu, Shanghua Wu, Zhixun Yang
Принадлежит: Dalian University of Technology, Ningbo Research Institute of Dalian University of Technology

The present disclosure discloses a marine cable multifunctional integrated software development platform, a method, and a storage medium, and relates to the technical field of marine cable engineering. The marine cable multifunctional integrated software development platform includes a pre-processing module, an integrated software analysis module, a performance verification module, a post-processing module, and a data-driven module based on a cloud database. The method includes: inputting or calling engineering basic data, constructing and arranging structural units, completing the cross-section design of the marine cable, carrying out the optimization design on the cable section layout and line type based on a section performance analysis result, and then carrying out the safety check; storing and reading key data in the platform, and predicting and designing a cable section layout mode and a cable line type structure rapidly and intelligently; and carrying out visual display and export on a platform calculation result.

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Номер записи: 59
22-10-2024 дата публикации

Marine cable multifunctional integrated software development platform, method, and storage medium

Номер: US12124776B2
Автор: Dongling GENG, Haitao Hu, Jinlong Chen, Jun Yan, Qi Su, Qingzhen Lu, Shanghua Wu, Zhixun Yang
Принадлежит: Dalian University of Technology, Ningbo Research Institute of Dalian University of Technology

A marine cable multifunctional integrated software development system, a method, and a storage medium. The marine cable multifunctional integrated software development system includes a pre-processing module, an integrated software analysis module, a performance verification module, a post-processing module, and a data-driven module based on a cloud database. The method includes: inputting or calling engineering basic data, constructing and arranging structural elements, completing the cross-section design of the marine cable, carrying out the optimization design on the cable section layout and line type based on a section performance analysis result, and then carrying out the safety check; storing and reading key data in the system, and predicting and designing a cable section layout mode and a cable line type structure rapidly and intelligently; and carrying out visual display and export on a system calculation result.

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Номер записи: 60