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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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15-05-2019 дата публикации

Керамический композиционный материал

Номер: RU0000189195U1
Автор: Александр Анатольевич Локтионов, Александр Игоревич Смирнов, Андрей Геннадиевич Тюрин, Андрей Харисович Рахимянов, Владимир Андреевич Батаев, Владимир Владимирович Иванцивский, Ирина Леонидовна Аникеева, Константин Харисович Рахимянов, Нина Юрьевна Черкасова, Олег Викторович Медведко, Руслан Изатович Кузьмин, Сергей Викторович Веселов, Харис Магсуманович Рахимянов
Принадлежит: Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Новосибирский Государственный Технический Университет"

Полезная модель относится к керамическим композиционным материалам, в частности к дисперсно-упрочненным материалам, сочетающим высокую прочность, трещиностойкость и твердость, и может быть использована в медицине при производстве имплантатов.Задача (технический результат) предлагаемой полезной модели заключается в разработке керамического композиционного материала, сочетающего высокую прочность, трещиностойкость и твердость.Поставленная задача достигается тем, что композиционный керамический материал состоит из матрицы и трех видов упрочнителей: в качестве матрицы субмикронный (диапазон размеров от 0,2 до 1 мкм) порошок оксида алюминия (AlO), в качестве первого упрочнителя - армирующие субмикронные (диапазон размеров от 0,1 до 0,8 мкм) частицы диоксида циркония (ZrO), в качестве второго упрочнителя - пластинчатая фаза, состоящая из алюмината стронция (SrAlO), имеющая длину пластин от 1 до 5 мкм и ширину от 0,2 до 1 мкм, в качестве третьего упрочнителя - диоксид циркония с размером частиц 20-60 нм, находящийся внутри пластинчатой фазы алюмината стронция (SrAlO), и имеет следующее соотношение матрицы и упрочнителей мас. %: 50:50, причем упрочнители между собой имеют следующее соотношение: SrAlOдо 20 мас. %, наноразмерный ZrOдо 20 мас. %, остальное субмикронный ZrO. Свойства материала: предел прочности при изгибе=1400-1600 МПа, вязкость разрушения K=15-17 МПа⋅м, твердость HV=15-17 ГПа. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 189 195 U1 (51) МПК C04B 35/119 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК C04B 35/119 (2019.02); C04B 35/78 (2019.02); C04B 35/6455 (2019.02) (21)(22) Заявка: 2018139642, 12.11.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 15.05.2019 (45) Опубликовано: 15.05.2019 Бюл. № 14 Адрес для переписки: 630073, г. Новосибирск, пр. К. Маркса, 20, НГТУ U 1 R U 1 8 9 1 9 5 (56) Список документов, цитированных в отчете о поиске: US 2012/0163744 A1, 28.06.2012. RU ...

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Номер записи: 1
12-01-2012 дата публикации

Spark plug

Номер: US20120007489A1
Автор: Hirokazu Kurono, Hiroki Takeuchi, Katsuya Takaoka, Kuniharu Tanaka, Takeshi Mitsuoka, Toshitaka Honda
Принадлежит: NGK Spark Plug Co Ltd

A spark plug exhibits a satisfactory withstand voltage characteristic and sufficient mechanical strength in a high temperature environment exceeding 700° C. The spark plug has a center electrode, an insulator, and a ground electrode, characterized in that the insulator is formed of an alumina-based sintered material containing an Si component, a Group 2 element (2A) component, and a rare earth element (RE) component; that the alumina-based sintered material has an RE-β-alumina crystal phase; and that the mean crystal grain size D A (RE) of the RE-β-alumina crystal phase and that of alumina D A (Al) satisfy the following relationship (1): 0.2≦D A (RE)/D A (Al)≦3.0.

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Номер записи: 2
19-01-2012 дата публикации

Method and apparatus associated with anisotropic shrink in sintered ceramic items

Номер: US20120015797A1
Автор: M. Eric Schlienger, Michael D. Baldwin, Michael Maguire, Nina Bergan French, Paul Withoy
Принадлежит: Individual

A manufacturing method for producing ceramic item from a photocurable ceramic filled material by stereolithography. The method compensates for the anisotropic shrinkage of the item during firing to produce a dimensionally accurate item.

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Номер записи: 3
31-05-2012 дата публикации

Precision pressing and sintering of cutting inserts, particularly indexable cutting inserts

Номер: US20120134758A1
Автор: Andreas Schlagenhof, Bernd Bitterlich, Kilian Friederich, Michael Fripan, Ulrich Mowlai, Wolfgang KRÜMMEL
Принадлежит: Individual

A ready-for-use ceramic produced by sintering a blank and comprising an upper and a lower face, both of which have a support surface for mounting in a clamp mounting of a cutting tool, lateral faces connecting the upper and lower faces, and cutting edges which have chamfers.

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Номер записи: 4
21-06-2012 дата публикации

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

Номер: US20120157358A1
Автор: Christopher E. Coker, Christopher Y. FANG, Dilip K. Chatterjee, 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 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: 5
19-07-2012 дата публикации

Luminescent Ceramic Composite Converter and Method of Making the Same

Номер: US20120181919A1
Автор: George C. Wei
Принадлежит: Osram Sylvania Inc

A luminescent converter for a light emitting element (e.g., LED) includes a transparent, sol-gel-derived ceramic matrix having particles of at least one type of phosphor embedded therein that change a wavelength of the input light to light that has a different wavelength. The ceramic matrix is 20-80% porous with a majority of the pores having a diameter in a range of 2-20 nm. A method of making this converter includes preparing a sol-gel ceramic matrix embedded with the particles of phosphor in the matrix, and drying the matrix at no more than 600° C. to form the converter.

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Номер записи: 6
26-07-2012 дата публикации

Extrusion Process For Proppant Production

Номер: US20120190597A1
Автор: Christopher E. 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: 7
06-09-2012 дата публикации

Transparent alumina ceramics with oriented grains and preparation method thereof

Номер: US20120223449A1
Автор: Shiwei Wang, Shunzo Shimai, Xiaojian MAO
Принадлежит: Shanghai Institute of Ceramics of CAS

A kind or transparent alumina ceramics is disclosed herein, the optical axes of all or part or the crystal grains of the transparent alumina ceramics are arranged in a direction, which makes the transparent alumina ceramics have orientation.

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Номер записи: 8
04-10-2012 дата публикации

Method for producing electrostatic chuck and electrostatic chuck

Номер: US20120250212A1
Автор: Hirokazu Nakanishi, Takahiro Takahashi, Takuji Kimura
Принадлежит: NGK Insulators Ltd

A method for producing an electrostatic chuck 10 includes the steps of (a) pouring a ceramic slurry containing a ceramic powder, a solvent, a dispersant, and a gelling agent into a first molding die 31 in which an electrostatic electrode precursor 24 is removably attached to an inner surface of the first molding die 31 , gelatinizing the ceramic slurry by causing a chemical reaction of the gelling agent, and then removing the first molding die 31 to prepare an embedded-electrode-containing ceramic molded body 41 X in which the electrostatic electrode precursor 24 is embedded in a first ceramic molded body 41 ; (b) preparing a second ceramic molded body 42 ; and (c) preparing a stacked calcined body 50 using the embedded-electrode-containing ceramic molded body 41 X and the second ceramic molded body 42 , and conducting hot-press firing of the stacked calcined body 50.

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Номер записи: 9
08-11-2012 дата публикации

Composite Material of Electroconductor Having Controlled Coefficient of Thermical Expansion

Номер: US20120280184A1
Автор: Adolfo Fernandez Valdes, Maria Amparo Borrell Tomás, Olga Garcia Moreno, Ramon Torrecillas San Millan
Принадлежит: Consejo Superior de Investigaciones Cientificas CSIC

The present invention relates to a composite material comprising a ceramic component, characterized in that it has a negative coefficient of thermal expansion, and carbon nanofilaments, to its obtainment process and to its uses as electrical conductor in microelectronics, precision optics, aeronautics and aerospace.

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Номер записи: 10
13-12-2012 дата публикации

Method for manufacturing ceramic product

Номер: US20120313297A1
Автор: Ah Hyun Bae, Hee Seung Yang, Hye Ran Yoon, Jae Hwan Pee, Kyo Ree Lee
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method for manufacturing a ceramic product without a sintering process, which requires no removal of binder to ensure favorable brittle fracture resistance of the ceramic product. The method includes mixing a ceramic powder with an additive and a binder to prepare a ceramic powder mixture, and treating the ceramic powder mixture through vacuum vibration pressing, to thereby form a ceramic product. The ceramic powder may include a fused ceramic powder prepared by heating the ceramic material to a melting point of the ceramic material or higher to fuse the same, cooling the fused material, and milling the cooled material.

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Номер записи: 11
11-04-2013 дата публикации

Refractory powder comprising coated mullite grains

Номер: US20130090230A1
Автор: Christian His, Thibault Champion
Принадлежит: Saint Gobain Centre de Recherche et dEtudes Europeen SAS

A powder is disclosed having a coarse fraction representing more than 60% and less than 85% of the powder, as a weight percentage on the basis of the oxides, and that is constituted of particles having a size greater than or equal to 50 μm, referred to as “coarse particles”, the powder comprising at least 5% of coated grains having a size greater than or equal to 50 μm, as a weight percentage on the basis of the oxides of the powder, and a fine fraction, forming the balance to 100% as a weight percentage on the basis of the oxides, constituted of particles having a size of less than 50 μm, referred to as “matrix particles”. The powder can be applied in combustion chambers in which the temperature may reach 1400° C.

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Номер записи: 12
11-04-2013 дата публикации

Alumina-Based Ceramic Materials and Process for the Production Thereof

Номер: US20130090231A1
Автор: Todd Richard Ian, Yahya Noor Azlin
Принадлежит: ISIS INNOVATION LIMITED

The present invention provides a process for producing a ceramic material, which comprises: (a) forming a green compact by compacting a powder comprising alumina and carbon, wherein the powder is substantially free of silicon carbide and wherein the amount of carbon present in the powder does not exceed 0.1% by weight of the powder; and (b) sintering the green compact under non-oxidising conditions to form a ceramic material comprising alumina and carbon, wherein the green compact is sintered at a temperature of less than 1550° C. Ceramic materials obtainable by said process are also provided. 1. A process for producing a ceramic material , which comprises:(a) forming a green compact by compacting a powder comprising alumina and carbon, wherein the powder is substantially free of silicon carbide and wherein the amount of carbon present in the powder does not exceed 0.1% by weight of the powder; and(b) sintering the green compact under non-oxidising conditions to form a ceramic material comprising alumina and carbon, wherein the green compact is sintered at a temperature of less than 1550° C.2. A process according to claim 1 , wherein the powder comprises alumina particles having an average diameter of from about 1 nm to about 1 μm.3. A process according to claim 1 , wherein the powder contains carbon in the form of carbon particles.4. A process according to claim 3 , wherein the carbon particles have an average diameter of from about 1 nm to about 1 μm.5. A process according to claim 4 , wherein the particles are in the form of graphite particles.6. A process according to claim 1 , wherein the powder contains carbon in the form of an organic precursor.7. A process according to claim 1 , wherein carbon is present in the powder in an amount of from about 0.01% to about 0.05% by weight of the powder.8. A process according to claim 1 , wherein the green compact is sintered at a temperature of from about 1350° C. to about 1500° C.9. A process according to claim 1 , ...

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Номер записи: 13
16-05-2013 дата публикации

Electrostatic chuck

Номер: US20130120896A1
Автор: Hiroshi Ono
Принадлежит: Kyocera Corp

There is provided an electrostatic chuck an electrostatic chuck in which it is hard for the power of suppressing residual adsorption to deteriorate over time. There is provided an electrostatic chuck including an insulating substrate, and an adsorption electrode, wherein a region which includes at least an upper face of the insulating substrate containing Mn is made of ceramics containing a first transition element composed of at least one of Fe and Cr, and a ratio C2/C1 of a content C2 (mol) of the first transition element to a content C1 (mol) of Mn contained in the insulating substrate is 1 or more.

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Номер записи: 14
06-06-2013 дата публикации

Semiconductive ceramic sintered compact

Номер: US20130140679A1
Автор: Atsushi Teramoto, Shogo Shimada, Yasutaka Ushijima
Принадлежит: TOTO LTD

There is provided a semiconductive ceramic sintered compact that has a conductivity high enough to attain static electricity removal and antistatic purposes and, at the same time, has excellent mechanical properties or stability over time. The semiconductive ceramic sintered compact includes a main phase and a conductive phase present between the main phases, wherein the main phase is a ceramic sintered phase including Al 2 O 3 particles, the area ratio of the conductive phase to the main phase is 0% (exclusive) to 10% (inclusive), and the conductive phase includes two or more metals selected from Mn (manganese), Fe (iron), and Ti (titanium) and has a composition meeting a relation of Mn/(Ti+Mn+Fe)>0.08 or Mn/Ti>0.15.

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Номер записи: 15
06-06-2013 дата публикации

Component, in particular for a fitting, a piece of furniture and/or a domestic appliance, method for producing a component, and a fitting, piece of furniture and/or domestic appliance

Номер: US20130142457A1
Автор: Arthur Krause, Björn Gebhardt, Daniel Rehage, Lars Schrubke, Peter Jährling, Uwe Sobolewski, Willi Grigat
Принадлежит: Paul Hettich GmbH and Co KG

A component for one or more of a fitting, a piece of furniture, and a domestic appliance. The component includes a formed body including one or more of a hard-material-containing composite, a metal-ceramic composite, and a hard material. A method of producing the component includes providing the formed body and shaping it by thermal spraying or mechanical forming.

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Номер записи: 16
18-07-2013 дата публикации

CERAMICS SUBSTRATE FOR MOUNTING LIGHT-EMITTING ELEMENT AND LIGHT-EMITTING DEVICE

Номер: US20130181593A1
Автор: Kusano Kazuhide, Shikata Kunihide
Принадлежит: KYOCERA CORPORATION

A ceramics substrate for mounting a light-emitting element includes a ceramic sintered body, the ceramic sintered body having a mounting section on which a light-emitting element is mounted, in a surface portion on a mounting section side of the ceramic sintered body, a ratio of crystal grains having a crystal grain size of 0.2 μm to 1.0 μm in equivalent circle diameter being in a range of 45% to 80%, a ratio of crystal gains having a crystal grain size of 2.0 μm to 6.0 μm in equivalent circle diameter being in a range of 5% to 15%, and a ratio of crystal grains having a crystal grain size of more than 6.0 μm in equivalent circle diameter being 2.7% or less. 1. A ceramics substrate for mounting a light-emitting element comprising a ceramic sintered body , the ceramic sintered body having a mounting section on which the light-emitting element is mounted , in a surface portion on a mounting section side of the ceramic sintered body , a ratio of crystal grains having a crystal grain size of 0.2 μm to 1.0 μm in equivalent circle diameter being in a range of 45% to 80% , a ratio of crystal gains having a crystal grain size of 2.0 μm to 6.0 μm in equivalent circle diameter being in a range of 5% to 15% , and a ratio of crystal grains having a crystal grain size of more than 6.0 μm in equivalent circle diameter being 2.7% or less.2. The ceramics substrate for mounting a light-emitting element according to claim 1 , wherein the ceramic sintered body contains 94 mass % or more of aluminum oxide.3. The ceramics substrate for mounting a light-emitting element according to claim 1 , wherein a maximum value of the crystal grain size is 6.0 μm or less.4. The ceramics substrate for mounting a light-emitting element according to claim 1 , wherein an average crystal grain size is in a range of 0.7 μm to 1.3 μm in equivalent circle diameter.5. The ceramics substrate for mounting a light-emitting element according to claim 1 , wherein the ceramic sintered body has a grain boundary ...

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Номер записи: 17
08-08-2013 дата публикации

Bonded Abrasive Wheel

Номер: US20130203328A1
Автор: Maiken Givot, Mark G. Schwabel
Принадлежит: 3M Innovative Properties Co

A bonded abrasive wheel comprises ceramic shaped abrasive particles retained in a binder. The ceramic shaped abrasive particles are bounded by a respective base, top and plurality of sides connecting the base and the top. Adjacent sides meet at respective side edges having an average radius of curvature of less than 50 micrometers.

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Номер записи: 18
22-08-2013 дата публикации

Nanotape and nanocarpet materials

Номер: US20130216811A1
Автор: Mohammed Naghi Ghasemi-Nehjad, Vamshi M. Gudapati
Принадлежит: UNIVERSITY OF HAWAII

Provided are nanostructure-containing nanotape materials. The materials may be incorporated at the interface between two other structures to provide strength and toughness at the interface. The materials may also be applied to a standalone structure to provide strength and toughness. Also provided are related methods of fabricating the nanotape materials, as well as gas diffusion membranes and fuel cells that include nanostructured materials.

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Номер записи: 19
12-09-2013 дата публикации

Sintered body and cutting tool

Номер: US20130236259A1
Автор: Hironobu Kusanagi, Jun Moteki, Kuniharu Tanaka, Takeshi Mitsuoka, Yoshihiro Kuroki, Yusuke KATSU
Принадлежит: NGK Spark Plug Co Ltd

A sintered body containing alumina crystal particles and zirconia crystal particles as main components includes the tetragonal crystal particles as the zirconia crystal particles. The zirconia crystal particles satisfy relations 0%≦A≦3%, 3%≦B≦22% and 77%≦C≦96%, where A, B and C are as defined herein.

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Номер записи: 20
12-09-2013 дата публикации

Method For The Production Of Stable Binder-Free High-Purity Moldings Composed Of Metal Oxides and Their Use

Номер: US20130237413A1
Автор: Holger Szillat
Принадлежит: Wacker Chemie AG

Stable high strength porous metal oxide articles suitable, for example, for use as catalyst supports, are prepared by predisposing fine metal oxide particles in water followed by fine dispersion under high shear, and subjecting the dispersion to a change in pH to coagulate the metal oxide particles and form a moldable viscoelastic composition. The moldings are substantially free of impurity atoms.

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Номер записи: 21
19-09-2013 дата публикации

Electronic component element housing package

Номер: US20130240262A1
Автор: Masanori Nagahiro
Принадлежит: Nippon Steel and Sumikin Electronics Devices Inc

An electronic component element housing package is produced by firing a ceramic substrate for housing an electronic component element and a metal layer for bonding to the ceramic substrate to form an electrical path, simultaneously in a reducing atmosphere. The ceramic substrate comprises alumina (Al 2 O 3 ), a partially stabilized zirconia by forming solid solution with yttria (Y 2 O 3 ) and a sintering agent. The sintering agent comprises magnesia (MgO), and at least 1 type selected from silica (SiO 2 ), calcia (CaO), or manganese oxides (MnO, MnO 2 , Mn 2 O 3 , Mn 3 O 4 ).

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Номер записи: 22
21-11-2013 дата публикации

Alumina sintered body, abrasive grains, and grindstone

Номер: US20130305616A1
Автор: Hirokazu Miyazawa, Shinichiro Tomikawa, Takeshi Iemura
Принадлежит: Showa Denko KK

Provided are an alumina sintered compact containing a titanium compound and an iron compound, wherein FeTiAlO 5 grains exist in the grain boundary of the alumina grains and the mean grain size of the FeTiAlO 5 grains is from 3.4 to 7.0 μm; and an abrasive grain and a grain stone using the alumina sintered compact.

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Номер записи: 23
28-11-2013 дата публикации

Alumina sintered body, abrasive grains, and grindstone

Номер: US20130312336A1
Автор: Hirokazu Miyazawa, Shinichiro Tomikawa, Takeshi Iemura
Принадлежит: Showa Denko KK

Provided are an alumina sintered compact containing a titanium compound and an iron compound, wherein the total amount of the TiO 2 -equivalent content of the titanium compound, the Fe 2 O 3 -equivalent content of the iron compound and the alumina content is at least 98% by mass, the total amount of the TiO 2 -equivalent content of the titanium compound and the Fe 2 O 3 -equivalent content of the iron compound is from 5 to 13% by mass, and the ratio by mass of the TiO 2 -equivalent content of the titanium compound to the Fe 2 O 3 -equivalent content of the iron compound (TiO 2 /Fe 2 O 3 ) is from 0.85/1.15 to 1.15/0.85; and an abrasive grain and a grain stone using the alumina sintered compact.

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Номер записи: 24
19-12-2013 дата публикации

Alumina composite, method for manufacturing alumina composite, and polymer composition containing alumina composite

Номер: US20130338292A1
Автор: Atsushi Odaka, Takayuki Fujita
Принадлежит: Taimei Chemicals Co Ltd

For the purpose of producing an alumina composite in which the integrity between alumina and an inorganic material is further improved, a dispersion liquid preparation step, a solidification step and a burning step are performed, wherein the dispersion liquid preparation step comprises preparing a dispersion liquid in which an inorganic material such as a carbon material is homogeneously dispersed in an alumina raw material solution having an organic additive dissolved therein, the solidification step comprises drying the dispersion liquid to produce a solid raw material, and burning step comprises burning the solid raw material in a non-acidic atmosphere while contacting hydrogen chloride with the solid raw material. In this manner, an alumina composite can be produced, in which at least a portion of an inorganic material such as a carbon material is embedded in the inside of each of α-alumina single crystal particles the constitute alumina particles.

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Номер записи: 25
13-03-2014 дата публикации

Compositions and methods for converting hazardous waste glass into non-hazardous products

Номер: US20140073830A1
Автор: Biprodas Dutta, Hao Gan, Ian L. Pegg, Malabika Chaudhuri
Принадлежит: Catholic University of America

The present invention provides compositions and methods for converting hazardous waste glass into safe and usable material. In particular, the present invention provides compositions and methods for producing ceramic products from toxic-metal-containing waste glass, thereby safely encapsulating the metals and other hazardous components within the ceramic products.

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Номер записи: 26
07-01-2016 дата публикации

Monolithic separation membrane structure and method of manufacture thereof

Номер: US20160001203A1
Автор: Hideyuki Suzuki, Makiko Ichikawa, Makoto Teranishi
Принадлежит: NGK Insulators Ltd

A monolithic separation membrane structure comprises a substrate, a first support layer and a separation membrane. The substrate is composed of a porous material and including a plurality of through holes. The first support layer is formed on an inner surface of the plurality of through holes. The separation membrane arranged in the first support layer. The first support layer includes an aggregate material having alumina as a main component, an inorganic binder have titania as a main component, and a sintering additive having at least one of silica and magnesia as a main component.

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Номер записи: 27
03-01-2019 дата публикации

MONOLITHIC SEPARATION MEMBRANE STRUCTURE

Номер: US20190001280A1
Автор: FURUKAWA Masahiro, Miura Aya, Tanaka Kei
Принадлежит: NGK Insulators, Ltd.

The monolithic separation membrane structure includes a monolithic base, an intermediate layer and a separation membrane. The monolithic base has a plurality of filtration cells extending from a first end face to a second end face. The intermediate layer is formed on an inner surface of the filtration cells. The separation membrane is formed on an inner surface of the intermediate layer. An inner diameter not including the intermediate layer and the separation membrane of the plurality of respective filtration cells is greater than or equal to 1.0 mm to less than or equal to 2.0 mm. A partition wall thickness not including the intermediate layer and the separation membrane of the shortest portion of two adjacent filtration cells of the plurality of filtration cells is greater than or equal to 0.05 mm to less than 0.2 mm. A thickness of the intermediate layer is greater than or equal to 20 μm to less than 100 μm. 1. A monolithic separation membrane structure comprising:a monolithic base having a plurality of filtration cells respectively extending from a first end face to a second end face,an intermediate layer formed on an inner surface of the filtration cells, anda separation membrane formed on an inner surface of the intermediate layer, whereinan inner diameter of the plurality of respective filtration cells, not including the intermediate layer and the separation membrane, is greater than or equal to 1.0 mm to less than or equal to 2.0 mm,a partition wall thickness of a shortest portion of the monolithic base between two adjacent filtration cells of the plurality of filtration cells is greater than or equal to 0.05 mm to less than 0.2 mm, anda thickness of the intermediate layer is greater than or equal to 20 μm to less than 100 μm.2. The monolithic separation membrane structure according to claim 1 , whereinthe monolithic base includes a plurality of water collecting cells that respectively extend from the first end face to the second end face and in which both ...

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Номер записи: 28
02-01-2020 дата публикации

Method for the production of a part made from a composite material

Номер: US20200001504A1
Автор: Arnaud DELEHOUZE, Bertrand Desjoyeaux, Mathieu Schwartz, Nicolas Laval
Принадлежит: Safran Ceramics SA

A method of fabricating a composite part, includes forming a fiber preform for the part that is to be obtained by depositing a plurality of fiber structures impregnated with a thermoplastic polymer onto a surface, with deposition being performed by automated fiber placement; eliminating the thermoplastic polymer present in the preform by dissolution with a solvent; and injecting a liquid impregnation composition into the pores of the fiber preform after eliminating the thermoplastic polymer in order to form a matrix in the pores of the fiber preform.

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Номер записи: 29
02-01-2020 дата публикации

LIGHT-TRANSMITTING CERAMIC SINTERED BODY AND METHOD FOR PRODUCING SAME

Номер: US20200002231A1
Автор: Miyakawa Naomichi, Ogawa Shuhei, OHKOSHI KAZUTO, SHINOZAKI Yasuo, TOHYAMA Kazunari, YOSHINO Haruhiko
Принадлежит: AGC Inc.

The present invention relates to a light-transmitting ceramic sintered body which contains air voids having pore diameters of 1 μm or more but less than 5 μm at a density within the range of from 10 voids/mmto 4,000 voids/mm(inclusive), while having a closed porosity of from 0.01% by volume to 1.05% by volume (inclusive). With respect to this light-transmitting ceramic sintered body, a test piece having a thickness of 1.90 mm has an average transmittance of 70% or more in the visible spectrum wavelength range of 500-900 nm, and the test piece having a thickness of 1.90 mm has a sharpness of 60% or more at a comb width of 0.5 mm. 1. A light-transmitting ceramic sintered body containing air bubbles each having a pore size of 1 μm or more and less than 5 μm in an amount of 10 bubbles/mmor more and 4 ,000 bubbles/mmor less , and having a closed porosity of 0.01 vol % or more and 1.05 vol % or less; andhaving an average transmittance of a test specimen of the light-transmitting ceramic sintered body having a thickness of 1.90 mm of 70% or more with respect to a visible spectrum with a wavelength of 500 to 900 nm, and a clarity in a comb width of 0.5 mm of a test specimen of the light-transmitting ceramic sintered body having a thickness of 1.90 mm of 60% or more.2. A light-transmitting ceramic sintered body containing air bubbles each having a pore size of 1 μm or more and less than 5 μm in an amount of 10 bubbles/mmor more and 4 ,000 bubbles/mmor less , and having a closed porosity of 0.01 vol % or more and 1.05 vol % or less; andhaving an average transmittance of a test specimen of the light-transmitting ceramic sintered body having a thickness of 0.80 mm of 74% or more with respect to a visible spectrum with a wavelength of 500 to 900 nm, and a clarity in a comb width of 0.5 mm of a test specimen of the light-transmitting ceramic sintered body having a thickness of 0.80 mm of 75% or more.3. A light-transmitting ceramic sintered body containing air bubbles each having ...

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Номер записи: 30
03-01-2019 дата публикации

Monolithic base and production method therefor

Номер: US20190002350A1
Автор: Masahiro Furukawa, Ryotaro Yoshimura
Принадлежит: NGK Insulators Ltd

The monolithic base is a porous alumina body that includes pores and that is configured by alumina particles as an aggregate and an oxide phase as a binding material. The alumina particles include microscopic alumina particles having a particle diameter of greater than or equal to 0.5 μm and less than or equal to 5 μm and coarse alumina particles having a particle diameter of greater than 5 μm. The number of microscopic alumina particles that are encapsulated in the oxide phase is greater than or equal to 50% of the total number of microscopic alumina particles and coarse alumina particles.

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Номер записи: 31
07-01-2016 дата публикации

Method for the production of a curved ceramic sound attenuation panel

Номер: US20160003106A1
Автор: Eddy Goulliane, Eric Philippe, Sebastien Jimenez, Stephanie Fouquet
Принадлежит: Herakles SA

A method of fabricating a sound attenuation panel of curved shape, the method including impregnating a fiber structure defining a cellular structure with a ceramic precursor resin; polymerizing the ceramic precursor resin while holding the fiber structure on tooling presenting a curved shape corresponding to the final shape of the cellular structure; docking the cellular structure with first and second skins, each formed by a fiber structure impregnated with a ceramic precursor resin, each skin being docked to the cellular structure before or after polymerizing the resin of the skins; pyrolyzing the assembly constituted by the cellular structure and the first and second skins; and densifying the assembly by chemical vapor infiltration.

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Номер записи: 32
01-01-2015 дата публикации

BIOMEDICAL DEVICE, METHOD FOR MANUFACTURING THE SAME AND USE THEREOF

Номер: US20150004042A1
Автор: NIMAL Didier
Принадлежит:

A method for manufacturing a three-dimensional biomedical device for fitting in a bone defect having an osteoinductive first area with a controlled porosity and a second area, which is produced by laser technology from an absorbent and from a first powder including one of ceramics, metals, metal alloys, bioactive glasses, lead zirconate titanate and biocompatible polymers, or mixtures thereof, wherein the ratio of the porosities from the second area to the first area is equal or less than one, preferably from 0.001 to 0.9, wherein a virtual object is designed with a computer-aid designed software, and the device is manufactured by laser technology including layering a powder onto a plate () so that a layer of a predetermined thickness is formed; the laser beam () selectively processes the powder to produce a processed layer, and, thus, layer after layer, the layers are joined together until the biomedical device is formed. 1. A method for manufacturing a biomedical device for fitting bone defect , said biomedical device having at least one osteoconductive first area with a controlled porosity and at least one porous second area , the ratio of the porosity of the second area to the porosity of the first area being equal or less than one , wherein the device is produced by a laser technology from an absorbent and from a first powder comprising a material selected from the group consisting of ceramics , metals , metal alloys , bioactive glasses , lead zirconate titanate , biocompatible polymers , and mixtures thereof , wherein the laser is a pulsed laser or a continuous laser of 100 to 1200 watts , and the laser progression speed of the laser beam ranges from 0.01 and 5000 mm/s; and whereinan image of the defect is performed,from this image, a virtual object is designed with a computer-aid designed software,optionally, a scale model is performed, [ a mixture of the first powder and the absorbent;', 'a first powder coated with the absorbent; or', 'the first powder, ...

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Номер записи: 33
01-01-2015 дата публикации

Ceramic Component formed ceramic portions bonded together with a halogen plasma resistant bonding agent

Номер: US20150004418A1
Автор: Jennifer Y. Sun, Kenneth S. Collins, Ren-Guan Duan
Принадлежит: Applied Materials Inc

A bonded ceramic component which is resistant to reactive halogen-containing plasmas, said component comprising ceramic portions which are bonded together by a bonding material which includes an oxyfluoride glass-ceramic-comprising transition area between interfaces of the ceramic portions, where the transition area includes from at least 0.1 volume % amorphous phase up to about 50 volume % amorphous phase.

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Номер записи: 34
02-01-2020 дата публикации

LITHIUM STUFFED GARNET SETTER PLATES FOR SOLID ELECTROLYTE FABRICATION

Номер: US20200003494A1
Автор: DONNELLY Niall, Holme Tim, IYER Sriram
Принадлежит:

Setter plates are fabricated from Li-stuffed garnet materials having the same, or substantially similar, compositions as a garnet Li-stuffed solid electrolyte. The Li-stuffed garnet setter plates, set forth herein, reduce the evaporation of Li during a sintering treatment step and/or reduce the loss of Li caused by diffusion out of the sintering electrolyte. Li-stuffed garnet setter plates, set forth herein, maintain compositional control over the solid electrolyte during sintering when, upon heating, lithium is prone to diffuse out of the solid electrolyte. 1118-. (canceled)119. A slurry comprising:{'sub': A', 'B', 'C', 'D', 'E', 'F, 'lithium-stuffed garnet characterized by the formula LiLaM′M″ZrO, wherein 4 Подробнее

Номер записи: 35
07-01-2021 дата публикации

GARNET MATERIALS FOR LI SECONDARY BATTERIES AND METHODS OF MAKING AND USING GARNET MATERIALS

Номер: US20210005926A1
Автор: CHOI Dong Hee Anna, DONNELLY Niall, Holme Tim, HUDSON Will, IYER Sriram, KARPENKO Oleh, SINGH Mohit, WINOTO Adrian
Принадлежит:

Set forth herein are garnet material compositions, e.g., lithium-stuffed garnets and lithium-stuffed garnets doped with alumina, which are suitable for use as electrolytes and catholytes in solid state battery applications. Also set forth herein are lithium-stuffed garnet thin films having fine grains therein. Disclosed herein are novel and inventive methods of making and using lithium-stuffed garnets as catholytes, electrolytes and/or anolytes for all solid state lithium rechargeable batteries. Also disclosed herein are novel electrochemical devices which incorporate these garnet catholytes, electrolytes and/or anolytes. Also set forth herein are methods for preparing novel structures, including dense thin (<50 um) free standing membranes of an ionically conducting material for use as a catholyte, electrolyte, and, or, anolyte, in an electrochemical device, a battery component (positive or negative electrode materials), or a complete solid state electrochemical energy storage device. Also, the methods set forth herein disclose novel sintering techniques, e.g., for heating and/or field assisted (FAST) sintering, for solid state energy storage devices and the components thereof. 1123-. (canceled)124. A multilayer , comprising:a first layer comprising an unsintered lithium-stuffed garnet polycrystalline thin film, wherein the thickness of the first layer is less than 100 μm and greater than 10 nm; anda second layer comprising a metal foil or metal powder, wherein the second layer is in contact with the first layer, and wherein the metal foil or metal powder comprises a metal selected from nickel (Ni), copper (Cu), an alloy thereof, and a combination thereof.125. The multilayer of claim 124 , further comprising a third layer comprising an unsintered lithium-stuffed garnet polycrystalline thin film claim 124 , wherein the thickness of the third layer is less than 100 μm and greater than 10 nm claim 124 , wherein the second layer is between and in contact with the first ...

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Номер записи: 36
11-01-2018 дата публикации

OXIDE BASED CERAMIC MATRIX COMPOSITES

Номер: US20180009718A1
Автор: DiChiara, JR. Robert A.
Принадлежит:

A method of making a ceramic matrix composites (CMC) having superior properties at high temperatures. The CMC can include a sol gel mixture mixed or blended metal oxide particles. The sol-gel mixture can be an aqueous colloidal suspension of a metal oxide, preferably from about 10 wt % to about 25 wt % of the metal oxide, containing a metal oxide such as alumina (AlO), silica (SiO) or alumina-coated silica. The mixture can be infiltrated into a ceramic fiber, gelled, dried and sintered to form the CMC of the present teachings. 1. A method of forming a ceramic composite , comprising:mixing a water based mixture that does not have a polymer by mixing (1) alumina particles having a size range of 0.1 to 1.0 micrometers, including submicron particles with (2) an aqueous colloidal suspension sol-gel having about 10 wt % to about 25 wt % of silica, alumina, or alumina coated silica, the sol-gel having particles having a size in a range of 4 to 150 nanometers wherein the formed mixture has 40 wt % to about 70 wt % sol-gel and about 30 wt % to about 60 wt % alumina particles;completely infiltrating a fabric consisting essentially of a ceramic fiber with the mixture of the sol-gel and the alumina particles;draping the fabric on a tool to form one or more layers of an infiltrated fabric into a shape;rigidifying the infiltrated fabric on the tool by curing the infiltrated fabric so that the infiltrated fabric maintains the shape after the tool is removed, wherein the curing the infiltrated fabric on the tool comprises autoclaving the infiltrated fabric while the infiltrated fabric is on the tool, and wherein the curing the infiltrated fabric includes subjecting the infiltrated fabric while placed on the tool to a vacuum bag cure to apply 30-100 psi at a temperature of about 350 degrees Fahrenheit;after rigidifying the infiltrated fabric in the shape, removing the tool from the infiltrated fabric and maintaining in the infiltrated fabric the shape; andheat treating the ...

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Номер записи: 37
14-01-2021 дата публикации

Plate-like alumina particle and a manufacturing method for the same

Номер: US20210009812A1
Автор: Hiroshi Kinoshita, Jian-Jun Yuan
Принадлежит: DIC Corp

[Solving Means] The above problem is solved by providing a plate-like alumina particle including a step of firing an aluminum compound in the presence of a shape-controlling agent and a molybdenum compound serving as a fluxing agent. The above problem is solved also by providing a method for producing a plate-like alumina particle, the method including a step in which the aluminum compound and the molybdenum compound react with each other to form aluminum molybdate and a step in which the aluminum molybdate is decomposed to obtain the plate-like alumina particle.

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Номер записи: 38
14-01-2021 дата публикации

CERAMIC SUBSTRATE AND SUSCEPTOR

Номер: US20210013081A1
Автор: HIDAKA Nobuhiro, KIMURA Naoto, KOSAKAI Mamoru, KUGIMOTO Hironori
Принадлежит: Sumitomo Osaka Cement Co., Ltd.

A ceramic substrate made of a dielectric material including silicon carbide particles, which is used as a forming material, in which the number of the silicon carbide particles per unit area on the surface of the substrate is smaller than the number of the silicon carbide particles per unit area in a cross section of the substrate. 1. A ceramic substrate which is made of a dielectric material including silicon carbide particles as a forming material ,wherein the number of the silicon carbide particles per unit area on a surface of the substrate is smaller than the number of the silicon carbide particles per unit area in a cross section of the substrate.2. The ceramic substrate according to claim 1 , wherein an average particle diameter of the silicon carbide particles is 0.2 μm or less.3. A susceptor comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the ceramic substrate according to ,'}wherein a surface of the ceramic substrate is a mounting surface on which a plate-shaped sample is mounted.4. An electrostatic chuck device comprising: [{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the ceramic substrate according to as a mounting plate,'}, 'a supporting plate,', 'an electrostatic attraction electrode provided between the ceramic substrate and the supporting plate, and', 'an insulating material layer that insulates surroundings of the electrostatic attraction electrode;, 'an electrostatic chuck part which includes'}a temperature adjusting base part; andan adhesive layer provided between the electrostatic chuck part and the temperature adjusting base part.5. The ceramic substrate according to claim 1 , wherein the dielectric material includesaluminum oxide particles or yttrium oxide particles having an average crystal grain size of 5 μm or less, as a main phase, andsilicon carbide particles having an average particle diameter of 0.2 μm or less, as a sub-phase.6. The ceramic substrate according to claim 1 , wherein the ceramic substrate is formed by a ...

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Номер записи: 39
14-01-2021 дата публикации

ELECTROSTATIC CHUCK DEVICE AND METHOD FOR MANUFACTURING SAME

Номер: US20210013082A1
Автор: HIDAKA Nobuhiro, KIMURA Naoto
Принадлежит: Sumitomo Osaka Cement Co., Ltd.

This electrostatic chuck device () includes a base () having one main surface serving as a mounting surface () on which a plate-shaped sample is mounted, and an electrode for electrostatic attraction () provided on the side opposite to the mounting surface () in the base (), in which the base () consists of a ceramic material as a forming material, and the ceramic material contains aluminum oxide and silicon carbide as main components thereof, and has a layered graphene present at a grain boundary of the aluminum oxide. 1. An electrostatic chuck device comprising:a base having one main surface serving as a mounting surface on which a plate-shaped sample is mounted; andan electrode for electrostatic attraction provided on a side opposite to the mounting surface in the base,wherein the base consists of a ceramic material, andthe ceramic material is a sintered body containing aluminum oxide and silicon carbide as main components thereof and having a layered graphene present at a grain boundary of the aluminum oxide.2. The electrostatic chuck device according to claim 1 ,wherein the sintered body further contains β-SiC type silicon carbide.3. The electrostatic chuck device according to claim 1 ,wherein a relative dielectric constant of the ceramic material at a frequency of 10 Hz is 12.3 or more, and a relative dielectric constant of the ceramic material at a frequency of 1 MHz is 12.5 or less.4. A method for manufacturing the electrostatic chuck device according to claim 1 , the method comprising:a step of heating a formed body obtained by forming granules composed of mixed particles of aluminum oxide particles and silicon carbide particles, at a temperature of 500° C. or lower with a rate of temperature rise of 0.3° C./min or more; anda step of sintering the formed body, which has been treated in the step of heating to form a sintered body containing aluminum oxide and silicon carbide as main components thereof and having a layered graphene present at a grain boundary ...

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Номер записи: 40
17-01-2019 дата публикации

Cellulose nanocrystal-modified ceramic blank and preparation method thereof

Номер: US20190016642A1
Автор: Ning Lin, Tengfei DENG, Xiaohong XU, Yanjuan Wang
Принадлежит: Wuhan University of Technology WUT

A cellulose nanocrystal-modified ceramic blank and a preparation method thereof are disclosed. Cellulose nanocrystals are added into a ceramic blank in gelcasting. The cellulose nanocrystal-modified ceramic blank comprises, by weight, 0.1 to 10 parts of cellulose nanocrystals, 0.1 to 30 parts of organic gel and 70 to 99 parts of ceramic powder. The cellulose nanocrystal has length of 100 to 300 nm, a diameter of 10 to 20 nm, a slenderness ratio of 10 to 15 , and an elastic modulus of 100 to 150 GPa. The drying strength of the ceramic blank with the cellulose nanocrystals is obviously improved.

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Номер записи: 41
17-01-2019 дата публикации

PROPPANT PARTICLES FORMED FROM SLURRY DROPLETS AND METHOD OF USE

Номер: US20190016944A1
Автор: Duenckel Robert, ELDRED Benjamin T., GARDINIER Clayton F., WILSON Brett A.
Принадлежит:

Proppant particles formed from slurry droplets and methods of use are disclosed herein. The proppant particles can include a sintered ceramic material and can have a size of about 80 mesh to about 10 mesh and an average largest pore size of less than about 20 microns. The methods of use can include injecting a hydraulic fluid into a subterranean formation at a rate and pressure sufficient to open a fracture therein and injecting a fluid containing a proppant particle into the fracture, the proppant particle including a sintered ceramic material, a size of about 80 mesh to about 10 mesh, and an average largest pore size of less than about 20 microns. 1. A proppant particle , comprising: a size of about 80 mesh to about 10 mesh;', 'a porosity; and', 'an average surface roughness of from about 0.1 micron to about 4 microns., 'a sintered ceramic material and having2. The proppant particle of claim 1 , wherein the sintered ceramic material has an alumina concentration of at least about 40 wt %.3. The proppant particle of claim 2 , wherein the sintered ceramic material has an alumina concentration of at least about 95 wt %.4. The proppant particle of claim 1 , further comprising a plurality of proppant particles comprising a sintered ceramic material and having a size of about 80 mesh to about 10 mesh claim 1 , a porosity claim 1 , and an average surface roughness of from about 0.1 micron to about 4 microns claim 1 , wherein the plurality of the proppant particles has a bulk density of about 1.35 g/cc to about 2.1 g/cc.5. The proppant particle of claim 4 , wherein the proppant particles have a specific gravity of about 2.5 g/cc to about 4.0 g/cc.6. The proppant particle of claim 1 , wherein the proppant particle has a surface roughness of less than about 2 microns.7. A ceramic particle for use in a subterranean formation claim 1 , the ceramic particle comprising:a sintered ceramic material;a size of about 80 mesh to about 10 mesh;a porosity; anda surface roughness of less ...

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Номер записи: 42
17-01-2019 дата публикации

METHODS OF MAKING PROPPANT PARTICLES FROM SLURRY DROPLETS AND METHODS OF USE

Номер: US20190016949A1
Автор: Duenckel Robert, ELDRED Benjamin T., GARDINIER Clayton F., Roper Todd, WILSON Brett A.
Принадлежит:

A method for making proppant particles is provided. The method can include providing a slurry of ceramic raw material, the slurry containing a reactant including a polycarboxylic acid, and flowing the slurry through a nozzle in a gas while vibrating the slurry to form droplets. The method can also include receiving the droplets in a vessel containing a liquid having an upper surface in direct contact with the gas, the liquid containing a coagulation agent. The method can further include reacting the reactant with the coagulation agent to cause coagulation of the reactant in the droplets. The droplets can then be transferred from the liquid and dried to form green pellets. The method can include sintering the green pellets in a selected temperature range to form the proppant particles. In one or more exemplary embodiments, the reactant can be or include a PMA:PAA copolymer. 1. A method for making proppant particles , comprising:providing a slurry of ceramic raw material, the slurry containing a reactant comprising a polycarboxylic acid;flowing the slurry through a nozzle while vibrating the slurry to form droplets;receiving the droplets in a vessel containing a liquid comprising a coagulation agent to provide coagulation of the reactant in the droplets;transferring the droplets from the liquid;drying the droplets to form green pellets; andsintering the green pellets in a selected temperature range to form the proppant particles.2. The method of claim 1 , wherein the reactant comprises PMA claim 1 , PAA claim 1 , or a copolymer thereof.3. The method of claim 2 , wherein the reactant comprises a PMA:PAA copolymer.4. The method of claim 3 , wherein the reactant further comprises a polysaccharide.5. The method of claim 4 , wherein the polysaccharide is an alginate.6. The method of claim 1 , wherein the coagulation agent comprises one or more salts of calcium claim 1 , magnesium claim 1 , strontium claim 1 , aluminum claim 1 , or iron.7. The method of claim 6 , wherein ...

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Номер записи: 43
16-01-2020 дата публикации

Water-based ceramic three-dimensional laminate material and method for using the same to manufacture ceramic objects

Номер: US20200017414A1
Автор: CHANG Ching-Hsing, Cheng Shih-Wei, TUNG Chun-Yen, YEN Chun-Jung, YEN Feng-Ming
Принадлежит:

The invention relates to a water-based ceramic three-dimensional laminate material and a method for using the same material to manufacture the ceramic objects, comprising: a step Sa of preparing a plurality of projected slice graphics and a slurry, wherein the projected slice graphics are formed by slicing a three-dimensional image along a specific direction with a specific thickness, the slurry is prepared by mixing the material powder, the photo-curing resin, the solvent and the additive; a step Sb of uniformly laying the slurry on the substrate to form a sacrificial layer; and a step Sc of uniformly laying the slurry on the slurry to form a reaction layer on the sacrificial layer; a step Sd of irradiating the reaction layer with a light beam according to one of the plurality of projected slice graphics, and the slurry is cured after being irradiated; a step Se of repeating steps Sc and Sd until a ceramic body is formed; a step Sf of washing the ceramic body with water or an organic solvent; and a step Sg of sintering the ceramic body at a high temperature to form a ceramic object. 1. A method of manufacturing a ceramic object using a water-based ceramic three-dimensional laminate material , comprising:a step (Sa) of preparing a plurality of projected slice graphics and a slurry, wherein the projected slice graphics are generated by slicing a three-dimensional image along a specific direction with a specific thickness; the slurry is prepared by mixing material powder, photo-curable resin, solvent and additive; the material powder comprising at least one of aluminum oxide powder, zirconium oxide powder, and glass ceramic powder, the photo-curable resin comprising at least one of a water-soluble resin and a water-dispersible resin; the solvent is water or a mixed solvent comprising water and alcohols, and the additive includes at least one of a dispersing agent, a binder, and a plasticizer;a step (Sb) of uniformly laying the slurry on a substrate to form a ...

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Номер записи: 44
17-01-2019 дата публикации

ELECTROSTATIC CHUCK DEVICE AND METHOD FOR MANUFACTURING ELECTROSTATIC CHUCK DEVICE

Номер: US20190019713A1
Автор: HIDAKA Nobuhiro, KOSAKAI Mamoru, KUGIMOTO Hironori
Принадлежит:

An electrostatic chuck device includes: a base having one principal surface which is a placing surface on which a plate-shaped sample is placed, wherein the base is made from a sintered compact of ceramic particles, which include silicon carbide particles and aluminum oxide particles, as a forming material; and an electrostatic attraction electrode which is provided on a surface of the base on the side opposite to the placing surface of the base, or in the interior of the base, in which the volume resistivity value of the sintered compact is 0.5×10Ωcm or more in the entire range from 24° C. to 300° C., a graph which shows the relationship of the volume resistivity value of the sintered compact to a temperature at which the volume resistivity value of the sintered compact is measured has a maximum value in the range from 24° C. to 300° C., and the amount of metal impurities in the sintered compact other than aluminum and silicon in the sintered compact is 100 ppm or less. 1. An electrostatic chuck device comprising:a base having one principal surface which is a placing surface on which a plate-shaped sample is placed, wherein the base is made from a sintered compact of ceramic particles, which include silicon carbide particles and aluminum oxide particles, as a forming material; andan electrostatic attraction electrode which is provided on a surface of the base on the side opposite to the placing surface of the base, or in an interior of the base,{'sup': '15', 'wherein a volume resistivity value of the sintered compact is 0.5×10Ωcm or more in an entire range from 24° C. to 300° C.,'}a graph which shows a relationship of the volume resistivity value of the sintered compact to a temperature at which the volume resistivity value of the sintered compact is measured has a maximum value in the range from 24° C. to 300° C., andthe amount of metal impurities in the sintered compact other than aluminum and silicon is 100 ppm or less.2. The electrostatic chuck device according ...

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Номер записи: 45
17-01-2019 дата публикации

GARNET MATERIALS FOR LI SECONDARY BATTERIES AND METHODS OF MAKING AND USING GARNET MATERIALS

Номер: US20190020059A1
Автор: CHOI Dong Hee Anna, DONNELLY Niall, Holme Tim, HUDSON Will, IYER Sriram, KARPENKO Oleh, SINGH Mohit, WINOTO Adrian
Принадлежит:

Set forth herein are garnet material compositions, e.g., lithium-stuffed garnets and lithium-stuffed garnets doped with alumina, which are suitable for use as electrolytes and catholytes in solid state battery applications. Also set forth herein are lithium-stuffed garnet thin films having fine grains therein. Disclosed herein are novel and inventive methods of making and using lithium-stuffed garnets as catholytes, electrolytes and/or anolytes for all solid state lithium rechargeable batteries. Also disclosed herein are novel electrochemical devices which incorporate these garnet catholytes, electrolytes and/or anolytes. Also set forth herein are methods for preparing novel structures, including dense thin (<50 um) free standing membranes of an ionically conducting material for use as a catholyte, electrolyte, and, or, anolyte, in an electrochemical device, a battery component (positive or negative electrode materials), or a complete solid state electrochemical energy storage device. Also, the methods set forth herein disclose novel sintering techniques, e.g., for heating and/or field assisted (FAST) sintering, for solid state energy storage devices and the components thereof. 1. A composition comprising a lithium stuffed garnet and AlO , wherein the lithium-stuffed garnet is characterized by the empirical formula{'sub': A', 'B', 'C', 'D', 'E', 'F, 'LiLaM′M″ZrO, wherein 4 Подробнее

Номер записи: 46
21-01-2021 дата публикации

Plasma processing device member, plasma processing device comprising said plasma processing device member, and method for manufacturing plasma processing device member

Номер: US20210020415A1
Автор: Kazuhiro Ishikawa, Shuichi Saito, Takashi Hino
Принадлежит: Kyocera Corp

A plasma processing device member according to the disclosure includes a base material and a film formed of an oxide, or fluoride, or oxyfluoride, or nitride of a rare-earth element, the film being disposed on at least part of the base material, the film including a surface to be exposed to plasma, the surface having an area occupancy of open pores of 8% by area or more, and an average diameter of open pores of 8 μm or less.

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Номер записи: 47
28-01-2016 дата публикации

Ceramic composition and cutting tool

Номер: US20160023952A1
Автор: Jun Moteki, Takeshi Mitsuoka, Yusuke KATSU
Принадлежит: NGK Spark Plug Co Ltd

In a ceramic composition mainly composed of alumina (Al 2 O 3 ), tungsten carbide (WC) and zirconia (ZrO 2 ), zirconium (Zr) is distributed in a first grain boundary as an interface where an alumina (Al 2 O 3 ) crystal grain is adjacent to a tungsten carbide (WC) crystal grain and in a second grain boundary as an interface where two alumina (Al 2 O 3 ) crystal grains are adjacent to each other.

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Номер записи: 48
24-01-2019 дата публикации

CERAMIC CUTTING TOOL

Номер: US20190022880A1
Автор: NISHIHARA Takanori
Принадлежит:

A ceramic cutting tool may include a blade body including zirconium oxide as a primary component of the blade body, wherein the blade body includes particles including any one of aluminum oxide, silicon carbide, or silicon nitride as a primary component of the particles, and wherein the blade body includes a blade part, a plurality of the particles are partially embedded and exposed on a top part of the blade part, and wherein the plurality of the particles cohere to each other to form a plurality of aggregates. 1. A ceramic cutting tool comprisinga blade body containing zirconium oxide as a primary component of the blade body,wherein the blade body contains particles containing any one of aluminum oxide, silicon carbide, or silicon nitride as a primary component of the particles, andwherein the blade body includes a blade part, a plurality of the particles are partially embedded and exposed on a top part of the blade part, andwherein the plurality of the particles cohere to each other to form a plurality of aggregates.2. The cutting tool according to claim 1 ,wherein the particles contain aluminum oxide as the primary component of the particles.3. The ceramic cutting tool according to claim 1 ,wherein a width of the top part in a short-side direction is not less than 1 μm and not greater than 10 μm.4. The ceramic cutting tool according to claim 1 ,wherein an average particle size of the particles is not less than 10 nm and greater than 400 nm.5. The ceramic cutting tool according to claim 1 ,wherein the blade body contains the particles in an amount of not less than 5 vol. % and less than 50 vol. %.6. The ceramic cutting tool according to claim 1 ,wherein the blade body further comprises markings on a surface thereof, and the markings have a lower light reflectance than other particles of the blade body. The present application is a continuation application of U.S. application Ser. No. 15/556,629 filed on Sep. 8, 2017, which is a national stage entry according to ...

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Номер записи: 49
23-01-2020 дата публикации

PROCESS AND DEVICE FOR PREPARING A 3-DIMENSIONAL BODY, IN PARTICULAR A GREEN BODY

Номер: US20200023548A1
Автор: Abdolvand Amir, KEDING Ralf
Принадлежит:

The invention relates in a first aspect to a process for preparing a 3-dimensional body, in particular a vitreous or ceramic body, which comprises at least the following steps: a) providing an electrostatically stabilized suspension of particles; b) effecting a local destabilization of the suspension of particles by means of a localized electrical discharge between a charge injector and the suspension at a predetermined position and causing an aggregation and precipitation of the particles at said position; c) repeating step b) at different positions and causing the formation of larger aggregates until a final aggregate of particles representing a (porous) 3-dimensional body (green body) having predetermined dimensions has been formed; wherein the charge injector includes i) at least one discharge electrode which does not contact said suspension of particles or ii) a source of charged particles. A second aspect of the invention relates to a device, in particular for performing the above process, comprising at least the following components: —a vessel for receiving an electrostatically stabilized suspension of particles, —a charge injector, in particular including one or more electrodes or a source of high-energy charged particles, —means for moving the electrode and/or the vessel in the x, y and z directions, —a counter electrode arranged in the vessel for a contact with the suspension of particles, —one or more sensors for determining geometrical and physical parameters within said vessel. In one preferred embodiment, said device further comprises a means for directing a beam of gas-ionizing radiation, in particular a laser beam, to a predetermined position within the vessel. 1. A process for preparing a 3-dimensional vitreous or ceramic body , which comprises at least the following steps:a) providing an electrostatically stabilized suspension of particles;b) effecting a local destabilization of the suspension of particles by a localized electrical discharge ...

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Номер записи: 50
28-01-2021 дата публикации

ABRASIVE PARTICLES AND METHODS OF FORMING SAME

Номер: US20210024798A1
Автор: Bauer Ralph, Czerepinski Jennifer H., MOCH Eric
Принадлежит:

An abrasive particle having a body including a first major surface, a second major surface opposite the first major surface, and a side surface extending between the first major surface and the second major surface, such that a majority of the side surface comprises a plurality of microridges. 1. A collection of abrasive particles , wherein each abrasive particle of the collection of abrasive particles comprises:a body having a first major surface, a second major surface opposite the first major surface, and a side surface extending between the first major surface and the second major surface,wherein the side surface comprises a Mean Anisotropy Factor of at least 1.25.2. The collection of abrasive particles of claim 1 , wherein the collection of abrasive particles comprises a Mean Non-Convexity Factor of at least 3.5.3. The collection of abrasive particles of claim 1 , wherein the body comprises a height as defined as the distance along the side surface between the first major surface and the second major surface and wherein the collection of abrasive particles comprises a standard deviation of height of not greater than 100.4. The collection of abrasive particles of claim 1 , further comprising an Anisotropy Factor Standard Deviation of at least 0.75 and not greater than 10.5. The collection of abrasive particles of claim 1 , wherein the side surface comprises a first region extending from the first major surface and a second region extending from the second major surface claim 1 , and wherein the first region and second region abut on the side surface claim 1 , and wherein the second region extends for a greater percentage of the height as compared to the first region.6. The collection of abrasive particles of claim 5 , wherein the second region extends for a greater percentage of the height as compared to the first region.7. The collection of abrasive particles of claim 5 , wherein the first region has an average height of not greater than 90% of the height of ...

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Номер записи: 51
24-04-2014 дата публикации

REFINED WHITE CERAMIC MATERIAL AND METHOD FOR PREPARING SAME

Номер: US20140113800A1
Автор: Jin Huajiang, Ren Caihua, Shi Pengyuan, Zhang Bingqu, ZHANG Jinli, Zheng Hongyu
Принадлежит: THE 13TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION

Disclosed is a refined white ceramic material, which belongs to the field of ceramic materials for component packaging, and comprises the following raw materials by weight in percentage: aluminum oxide 87-93, magnesium oxide 0.8-5, silicon dioxide 1-6, calcium oxide 0.6-4, titanium dioxide 0.01-0.5, and zirconium dioxide 0.5-3. The method for preparing same comprises: (1) washing aluminum oxide grinding balls and a ball-milling tank, and drying for later use; (2) weighing a solvent NP-10 of 0.5-4 by weight in percentage, and adding the solvent into the ball-milling tank; (3) weighing raw materials, adding the raw materials into the ball-milling tank, and performing ball milling for 72±0.5 h. By means of the refined white ceramic material of the present invention, the obtained ceramic grains have even sizes, small surface roughness, and high fracture resistance performance of ceramic body. 1. A refined white ceramic material comprising the following raw materials in parts by weight: 87-93 parts of aluminum oxide , 0.8-5 parts of magnesium oxide , 1-6 parts of silicon dioxide , 0.6-4 parts of calcium oxide , 0.01-0.5 parts of titanium dioxide , 0.5-3 parts of zirconium dioxide.2. The refined white ceramic material of claim 1 , wherein the refined white ceramic material is made by ball grinding the mix of a solvent and a raw material.3. A method for producing a refined white ceramic material comprising:(1) cleaning the alumina grinding balls and ball mill jar, drying for later use;(2) weighing 0.5-4 parts by weight of NP-10 as a solvent, and adding the solvent into the ball mill jar;(3) weighing the following raw materials in parts by weight: 87-93 parts of aluminum oxide, 0.8 -5 parts of magnesium oxide, 1-6 parts of silicon dioxide, 0.6-4 parts of calcium oxide, 0.01-0.5 parts of titanium dioxide and 0.5-3 parts of zirconium dioxide, and adding the said raw materials into the ball mill jar, performing ball grinding for 72±0.5 h.4. The method for producing a refined ...

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Номер записи: 52
23-01-2020 дата публикации

COMPOSITE SINTERED BODY, ELECTROSTATIC CHUCK MEMBER, ELECTROSTATIC CHUCK DEVICE, AND METHOD FOR PRODUCING COMPOSITE SINTERED BODY

Номер: US20200027770A1
Автор: HIDAKA Nobuhiro, KIMURA Naoto
Принадлежит: Sumitomo Osaka Cement Co., Ltd.

A composite sintered body is a ceramic composite sintered body which includes metal oxide which is a main phase, and silicon carbide which is a sub-phase, in which crystal grains of the silicon carbide are dispersed in crystal grains of the metal oxide and at crystal grain boundaries of the metal oxide, and a proportion of the crystal grains of the silicon carbide dispersed in the crystal grains of the metal oxide is 25% or more in an area ratio with respect to a total crystal grains of the silicon carbide. 1. A composite sintered body which is a ceramic composite sintered body , comprising:a metal oxide which is a main phase; andsilicon carbide which is a sub-phase,wherein crystal grains of the silicon carbide are dispersed in crystal grains of the metal oxide and at crystal grain boundaries of the metal oxide, anda proportion of the crystal grains of the silicon carbide dispersed in the crystal grains of the metal oxide is 25% or more in an area ratio with respect to a total crystal grains of the silicon carbide.2. The composite sintered body according to claim 1 , wherein the metal oxide is aluminum oxide or yttrium oxide.3. The composite sintered body according to claim 1 , wherein an average crystal grain size of the metal oxide is 1.2 μm or more and 10 μm or less.4. An electrostatic chuck member comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a plate-shaped base which is formed of, as a forming material, the composite sintered body according to , the base having one principal surface which is a placing surface on which a plate-shaped sample is placed; and'}an electrostatic attraction electrode provided on a side opposite to the placing surface of the base, or in an interior of the base.5. An electrostatic chuck device comprising:{'claim-ref': {'@idref': 'CLM-00004', 'claim 4'}, 'the electrostatic chuck member according to .'}6. A method for producing a composite sintered body claim 1 , comprising:a step of mixing metal oxide particles and silicon ...

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Номер записи: 53
01-02-2018 дата публикации

Pressure forming of metal and ceramic powders

Номер: US20180029129A1
Автор: Edward J. Schweitzer, Hao Chen, James Alan Sago, Jeffrey M. Farina, John Eckert, Mark W. Broadley
Принадлежит: Lake Region Medical Inc

A method of pressure forming a brown part from metal and/or ceramic particle feedstocks includes: introducing into a mold cavity or extruder a first feedstock and one or more additional feedstocks or a green or brown state insert made from a feedstock, wherein the different feedstocks correspond to the different portions of the part; pressurizing the mold cavity or extruder to produce a preform having a plurality of portions corresponding to the first and one or more additional feedstocks, and debinding the preform. Micro voids and interstitial paths from the interior of the preform part to the exterior allow the escape of decomposing or subliming backbone component substantially without creating macro voids due to internal pressure. The large brown preform may then be sintered and subsequently thermomechanically processed to produce a net wrought microstructure and properties that are substantially free the interstitial spaces.

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Номер записи: 54
01-02-2018 дата публикации

Preparation method of ceramic membrane support

Номер: US20180029941A1
Автор: Fan Zhenkun, Meng Fanpeng, Zhang Chao, Zhang Jian
Принадлежит:

A preparation method of a ceramic membrane support is disclosed. Take aluminium hydroxide, produced through a carbon decomposing process by a sintering method, as a raw material, pre-sinter the aluminium hydroxide, and obtain a low-temperature alumina product A; add a first amount of mineralizer into the product A, grind after calcining the added product A, and obtain a α-alumina product B; mix the product B with AlO.nHO, calcine after adding a second amount of mineralizer into the mixed product B, and obtain a α-alumina product C; grind, scatter and grade the calcined and heat-preserved α-alumina product C, and obtain polyhedral alumina powders; mix the polyhedral alumina powders, water, humectant and dispersant and then sinter, and finally obtain the porous alumina support. The prepared support is easy to be sintered, is high in alumina purity, is good in corrosion resistance, and is improved in porosity and flux. 1. A preparation method of a ceramic membrane support , comprising steps of:(1) taking aluminium hydroxide, produced through a carbon decomposing process by a sintering method, as a raw material, pre-sintering the aluminium hydroxide, and obtaining a low-temperature alumina product A;(2) adding a first amount of mineralizer into the product A, grinding after calcining the added product A till a particle size is in a range of 5-15 μm, and obtaining a α-alumina product B;{'sub': 2', '3', '2, '(3) mixing the product B with AlO.nHO, wherein n=1-3, calcining after adding a second amount of mineralizer into the mixed product B, obtaining a α-alumina product C and heat-preserving the a-alumina product C;'}(4) grinding, scattering and grading the calcined and heat-preserved α-alumina product C, and obtaining polyhedral alumina powders; and(5) selecting a part of the polyhedral alumina powders, which comprises a subpart of the polyhedral alumina powders whose D50 is in a range of 20-25 μm and amount is 75-85% of a total mass of the polyhedral alumina powders, and ...

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Номер записи: 55
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: 56
30-01-2020 дата публикации

MANUFACTURING SYSTEM, PROCESS, ARTICLE, AND FURNACE

Номер: US20200031014A1
Автор: Badding Michael Edward, Bouton William Joseph, Kester Lanrik Wayne, Ketcham Thomas Dale, Kittleson Andrew Peter, Marshall Dale Charles, Merz Gary Edward, Miller Eric Lee, Okpara Emmanuel Chima, Walsh Conor James
Принадлежит:

A manufacturing system includes a tape advancing through the manufacturing system and a station of the manufacturing system. The tape includes a first portion having grains of an inorganic material bound by an organic binder. The station of the manufacturing system receives the first portion of the tape and prepares the tape for sintering by chemically changing the organic binder and/or removing the organic binder from the first portion of the tape, leaving the grains of the inorganic material, to form a second portion of the tape and, at least in part, prepare the tape for sintering. 1. A manufacturing system , comprising:a tape advancing through the manufacturing system, the tape including a first portion having grains of polycrystalline ceramic bound by an organic binder; anda station of the manufacturing system that receives the first portion of the tape and prepares the tape for sintering by chemically changing the organic binder and/or removing the organic binder from the first portion of the tape, leaving the grains of the polycrystalline ceramic, to form a second portion of the tape and thereby at least in part prepare the tape for sintering,wherein the station chars or burns at least most of the organic binder, in terms of weight, from the first portion of the tape without sintering the grains of polycrystalline ceramic, wherein the tape advances horizontally through the station, and wherein, as the tape advances through the station, the tape is directly supported by a gas bearing and/or an underlying surface and moves relative to that surface.2. The manufacturing system of claim 1 , wherein the first portion of the tape is substantially more bendable than the second portion such that a minimum bend radius without fracture of the first portion is less than half that of the second portion.3. The manufacturing system of claim 1 , wherein the station comprises an active heater that includes heating zones such that the rate of heat energy received by the tape ...

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Номер записи: 57
04-02-2021 дата публикации

CERAMICS PRODUCT MANUFACTURING METHOD AND CERAMICS PRODUCT

Номер: US20210031403A1
Автор: Kotani Yoshinori, Kubota Makoto, Ohashi Yoshihiro, Oshima Kanako, Yabuta Hisato, Yasui Nobuhiro
Принадлежит:

Provided are a method of manufacturing a ceramic article in which the improvement of mechanical strength, wear resistance, and machinability is achieved using a direct modeling system, and a ceramic article. The manufacturing method includes the steps of: (i) arranging powder containing ceramics as a main component on a base; (ii) irradiating a part or an entirety of the arranged powder with an energy beam to melt and solidify the powder, to thereby obtain an intermediate modeled article; (iii) causing the modeled article to absorb a metal component-containing liquid to impregnate the modeled article therewith; and (iv) subjecting the modeled article having absorbed the metal component-containing liquid to heat treatment. 1. A method of manufacturing a ceramic article comprising the steps of:(i) arranging powder containing ceramics as a main component on a base;(ii) irradiating a part or an entirety of the arranged powder with an energy beam to melt and solidify the powder, to thereby obtain a modeled article;(iii) causing the modeled article to absorb a metal component-containing liquid; and(iv) subjecting the modeled article having absorbed the metal component-containing liquid to heat treatment.2. The method of manufacturing a ceramic article according to claim 1 , wherein the metal component-containing liquid is changed to a metal compound by the heat treatment in the step (iv).3. The method of manufacturing a ceramic article according to claim 1 , wherein the metal component-containing liquid generates a phase that is to have a eutectic relationship with a phase forming the modeled article by the heat treatment in the step (iv).4. The method of manufacturing a ceramic article according to claim 3 , wherein claim 3 , when a melting point of the phase generated from the metal component-containing liquid is represented by T claim 3 , a melting point of the phase forming the modeled article claim 3 , which is to form a eutectic with the phase generated from the ...

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Номер записи: 58
04-02-2021 дата публикации

METHOD FOR MAKING HYBRID CERAMIC/METAL, CERAMIC/CERAMIC BODY BY USING 3D PRINTING PROCESS

Номер: US20210031404A1
Автор: Peterson Brian, Yang Xi
Принадлежит:

This invention relates to a product and a method of preparing ceramic and/or ceramic hybrid materials through the construction of a printed die. The printed die being made by three dimensional printing or additive manufacturing processes possesses both an external geometry and an internal geometry. 1. A ceramic composite comprising a ceramic body including external features corresponding to a mold pattern and at least one internal cavity; and at least a second material within the internal cavity that is different than the ceramic body , wherein the geometry of the at least one internal cavity includes at least one of an aspect ratio in the range of 100:1 to 5:1 or a diameter in the range of approximately 0.010 inch to 0.100 inch.2. The ceramic composite of claim 1 , wherein the second material includes a metal insert of a geometry that matches the geometry of the at least one internal cavity.3. The ceramic composite of claim 1 , wherein the second material includes a ceramic material that is different than the ceramic body.4. The ceramic composite of claim 1 , wherein the second material is a rod of alumina or quartz.5. The ceramic composite of claim 4 , wherein the rod includes a ceramic coating that is sintered to the ceramic body such that a sintered bond exists between the ceramic body and the rod and wherein the rod reinforces the ceramic body.6. The ceramic composite of claim 1 , wherein the second material is sintered to the ceramic body such that the first and second materials together form a contiguous structure in which the second material reinforces the ceramic body.7. The ceramic composite of claim 6 , wherein the internal cavity is non-linear.8. The ceramic composite of claim 1 , wherein the internal cavity is non-linear and the geometry of the second material matches the geometry of the at least one internal cavity.9. A ceramic composite comprising a ceramic body including external features corresponding to a mold pattern and at least one non-linear ...

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Номер записи: 59
04-02-2021 дата публикации

MANUFACTURING LINE, PROCESS, AND SINTERED ARTICLE

Номер: US20210031406A1
Автор: Badding Michael Edward, Bouton William Joseph, Brown Jacqueline Leslie, Curry Timothy Joseph, Hurny Roman E, Kester Lanrik Wayne, Ketcham Thomas Dale, Olenick John Albert, Olenick Kathleen Ritter, Paananen Jeremy, Silverblatt Thomas, St Julien Dell Joseph, Venkateswaran Viswanathan, Zink Nathan Michael
Принадлежит:

A manufacturing line includes a tape of green material that is directed through a furnace so that the furnace burns off organic binder material and then partially sinters the tape without the use of a setter board. Sintered articles resulting from the manufacturing line may be thin with relatively large surface areas; and, while substantially unpolished, have few sintering-induced surface defects. Tension may be applied to the partially sintered tape as it passes through a second furnace on the manufacturing line to shape resulting sintered articles. 1. Ceramic ribbon , comprising:grains comprising alumina, the grains sintered such that the grains are fused to one another;wherein thickness of the ceramic ribbon is a distance between first and second surfaces of the ceramic ribbon, wherein the thickness is no more than 500 micrometers and at least 10 micrometers;wherein porosity of the ceramic ribbon is volume of the ceramic ribbon unoccupied by inorganic material, wherein the porosity is less than 1%;wherein the first and second surfaces of the ceramic ribbon have a granular profile;wherein the first and second surfaces have roughness in a range of 10 nanometers to 1000 nanometers across a distance of 10 millimeters along the length of the ceramic ribbon;wherein the ceramic ribbon is translucent such that the ceramic ribbon has total transmittance of at least 30% at wavelengths in a range of 300 nanometers to 800 nanometers; andwherein the ceramic ribbon exhibits haze such that diffuse transmission through the ceramic ribbon is in a range of 10% to 60% at wavelengths from 300 nanometers to 800 nanometers.2. The ceramic ribbon of claim 1 , wherein length of the ceramic ribbon is a dimension of one of the first or second surfaces that is orthogonal to the thickness claim 1 , and wherein the first and second surfaces have flatness in a range from 0.1 micrometers to 50 micrometers over a distance of 1 centimeter along the length.3. The ceramic ribbon of claim 1 , ...

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Номер записи: 60
04-02-2021 дата публикации

METHOD OF PRODUCING ALUMINA CERAMICS REINFORCED WITH OIL FLY ASH

Номер: US20210032521A1
Автор: BAKARE Akolade Idris, Ehsan Muhammad Ali, HAKEEM Abbas Saeed
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

A method for making ceramic composites via sintering a mixture of alumina and oil fly ash. The alumina is in the form of nanoparticles and/or microparticles. The oil fly ash may be treated with an acid prior to the sintering. The composite may comprise graphite carbon derived from oil fly ash dispersed in an alumina matrix. The density, mechanical performance (e.g. Vickers hardness, fracture toughness), and thermal properties (e.g. thermal expansion, thermal conductivity) of the ceramic composites prepared by the method are also specified. 1: A method of producing a composite comprising oil fly ash dispersed in an alumina matrix , the method comprising:mixing oil fly ash and alumina to form a mixture; andsintering the mixture thereby producing the composite,wherein:a weight ratio of the alumina to the oil fly ash is in a range of 9:1 to 500:1; andthe sintering comprises applying a uniaxial pressure ranging from 30-80 MPa to the mixture.2: The method of claim 1 , wherein the mixing involves sonication.3: The method of claim 1 , wherein the sintering is a spark plasma sintering process.4: The method of claim 1 , wherein the sintering is performed at a temperature ranging from 1 claim 1 ,200-1 claim 1 ,600° C.5: The method of claim 4 , wherein the sintering is performed with a holding time ranging from 5-60 minutes.6: The method of claim 1 , wherein the sintering comprises heating the mixture at a heating rate ranging from 50-150° C./min.7: The method of claim 1 , wherein the oil fly ash is treated with an acid prior to the mixing.8: The method of claim 1 , wherein the oil fly ash is devoid of nickel claim 1 , iron claim 1 , and vanadium.9: The method of claim 1 , wherein the oil fly ash is in the form of porous particles with an average particle size of 5-60 μm.10: The method of claim 9 , wherein the porous particles are spherical.11: The method of claim 1 , wherein the alumina comprises α-AlO.12: The method of claim 1 , wherein the alumina is in the form of particles ...

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Номер записи: 61
01-02-2018 дата публикации

Ceramic and polymer composite, methods of making, and uses thereof

Номер: US20180035538A1
Автор: James William Zimmermann, Manuela Ocampo, Michael Lesley Sorensen, Weiguo Miao
Принадлежит: Corning Inc

A ceramic and polymer composite including: a first continuous phase comprising a sintered porous ceramic having a solid volume of from 50 to 85 vol % and a porosity or a porous void space of from 50 to 15 vol %, based on the total volume of the composite; and a second continuous polymer phase situated in the porous void space of the sintered porous ceramic. Also disclosed is a composite article, a method of making the composite, and a method of using the composite.

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Номер записи: 62
08-02-2018 дата публикации

MANUFACTURING METHOD OF MULTILAYER SHELL-CORE COMPOSITE STRUCTURAL COMPONENT

Номер: US20180036802A1
Автор: Li Yadong, LI Yajun
Принадлежит:

A manufacturing method of a multilayer shell-core composite structural component comprises the following procedures: (1) respectively preparing feeding material for injection forming of a core layer, a buffer layer and a shell layer, wherein the powders of feeding material of the core layer and the shell layer are selected from one or more of metallic powder, ceramic powder or toughened ceramic powder, and are different from each other, and the powder of feeding material of the buffer layer is gradient composite material powder; (2) layer by layer producing the blank of multilayer shell-core composite structural component by powder injection molding; (3) degreasing the blank; and (4) sintering the blank to obtain the multilayer shell-core composite structural component. The multilayer shell-core composite structural component has the advantages of high surface hardness, abrasion resistance, uniform thickness of the shell layer, stable and persistent performance. 1. A method for manufacturing a ball valve body having a multilayer shell-core composite structure , comprising:preparing feedstocks of a shell layer, at least one transition layer and a liner layer respectively, each of the feedstocks being formed by mixing a main powder of one of the three layers, a binder and an additive comprising a surface active agent and a plasticizer, wherein the main powder of the at least one transition layer comprises at least one mixed powder formed by mixing the main powder of the shell layer with the main powder of the liner layer at a ratio;performing a powder injection molding with the feedstocks, to obtain a green body of the ball valve body comprising the shell layer, the at least one transition layer and the liner layer;performing debinding on the green body of the ball valve body; andsintering the green body of the ball valve body after being debound, to obtain the ball valve body;wherein the main powder of the liner layer is made of a powdered toughened ceramic material, ...

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Номер записи: 63
24-02-2022 дата публикации

AIR-HEATING TYPE HEAT NOT BURN HEATING DEVICE, CERAMIC HEATING ELEMENT AND PREPARATION METHOD THEREOF

Номер: US20220053830A1
Автор: FU Zengxue, LIU Maoqi, XIONG Zhaorong, YU Xiangyi, ZHU Xiaohua
Принадлежит: XIAMEN FENGTAO CERAMICS CO., LTD.

An air-heating type heat not burn heating device, a ceramic heating element and a preparation method thereof are provided. The ceramic heating element includes a honeycomb ceramic body and a heating printed circuit. Porous channels are arranged in the honeycomb ceramic body, and the porous channels are circular holes or polygonal holes. The heating printed circuit is arranged around an outer surface of the honeycomb ceramic body to heat the air passing through the porous channels. According to the ceramic heating element, the surface made of high purity alumina honeycomb ceramic has high compactness, it is able to effectively prevent absorption of smoke dust particles, thus to effectively preventing odd smell; the high-purity alumina honeycomb ceramic has good thermal conductivity, with a thermal conductivity of 33 W/mk; the wall thickness and pore diameter in the honeycomb ceramic structure are both very small, and the thermal conductivity is extremely excellent. 1. A ceramic heating element , comprising:a honeycomb ceramic body, wherein porous channels are arranged in the honeycomb ceramic body, and the porous channels are circular holes or polygonal holes; anda heating printed circuit, wherein the heating printed circuit is arranged around an outer surface of the honeycomb ceramic body to heat air passing through the porous channels.2. The ceramic heating element of claim 1 , wherein the alumina ceramic tube body is an alumina honeycomb ceramic body claim 1 , and the alumina honeycomb ceramic body has a density being larger than or equal to 3.86 g/cm.3. The ceramic heating element of claim 1 , wherein the porous channels are uniformly distributed in the honeycomb ceramic body.4. The ceramic heating element of claim 1 , wherein the porous channels are arranged in a center of the honeycomb ceramic body.5. An air-heating type heat not burn heating device claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', '#text': 'claim 1'}, '#text': 'the ceramic heating ...

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Номер записи: 64
11-02-2016 дата публикации

LIGHT-EMITTING ELEMENT MOUNTING SUBSTRATE AND LIGHT-EMITTING ELEMENT MODULE

Номер: US20160043283A1
Автор: FURUTACHI Kenichi, TAKENOSHITA Hidehiro, TOYODA Satoshi
Принадлежит:

There are provided a light-emitting element mounting substrate which exhibits high reflectivity, and a light-emitting module having high reliability and high luminance. A light-emitting element mounting substrate includes an alumina sintered body containing alumina crystal, zirconia crystal, and grain boundary phase, wherein an intensity ratio I/Ibetween a peak intensity Iof tetragonal zirconia crystal at 2θ ranging from 30° to 30.5° and a peak intensity Iof monoclinic zirconia crystal at 2θ ranging from 28° to 28.5° measured by X-ray diffractometer using Cu-Kα radiation, is less than or equal to 35 excluding 0. Further, a light-emitting element module includes the light-emitting element mounting substrate, and a light-emitting element mounted thereon. 1. A light-emitting element mounting substrate , comprising:an alumina sintered body containing alumina crystal, zirconia crystal, and grain boundary phase,{'sub': t', 'm', 't', 'm, 'an intensity ratio I/Ibetween a peak intensity Iof tetragonal zirconia crystal at 2θ ranging from 30° to 30.5° and a peak intensity Iof monoclinic zirconia crystal at 2θ ranging from 28° to 28.5° measured by an X-ray diffractometer using Cu-Kα radiation, being less than or equal to 35 excluding 0.'}2. The light-emitting element mounting substrate according to claim 1 ,{'sub': '2', 'wherein, based on 100% by mass of all components constituting the alumina sintered body, a content of Zr in terms of ZrOfalls in a range of 5% by mass or above and 35% by mass or below.'}3. The light-emitting element mounting substrate according to claim 1 ,wherein at least part of the zirconia crystal is lamellar-structured zirconia crystal.4. The light-emitting element mounting substrate according to claim 1 ,wherein glass containing at least magnesium oxide and silicon oxide is present in the grain boundary phase, anda content of the glass falls in a range of 1% by mass or above and 6% by mass or below.5. The light-emitting element mounting substrate ...

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Номер записи: 65
07-02-2019 дата публикации

METHOD FOR PRUDUCING A CERAMIC MOULDED BODY

Номер: US20190039212A1
Автор: Belda Chriffe Omar, Christiani Siegbert, Wenzel Christian
Принадлежит:

The invention relates to a method for producing a ceramic moulded body, comprising the following steps: a) producing a green body containing ceramic material, binding agents and an organic pore forming agent; b) heating the green body to a temperature equal to or higher than the sublimation temperature of the pore forming agent; c) burning the green body to form a ceramic moulded body. According to the invention that the organic pore forming agent is selected from the group consisting of dicarboxylic acids and mixtures of dicarboxylic acids, the sublimation temperature being at least 80 k lower than the decomposition temperature. 1. A method for producing a ceramic molding comprising the steps of:a) producing a green body comprising ceramic material, binders and an organic pore former;b) heating the green body to a temperature equal to or above the sublimation temperature of the pore former; 'characterized in that the organic pore former is selected from the group consisting of dicarboxylic acids, of which the sublimation temperature is at least 80 K below the decomposition temperature.', 'c) firing the green body to form a ceramic molding;'}2. The method as claimed in claim 1 , characterized in that the sublimation temperature is from 160 to 240° C. claim 1 , preferably 180 to 220° C.3. The method as claimed in claim 2 , characterized in that the pore former is fumaric acid.4. The method as claimed in any of to claim 2 ,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'characterized in that the proportion of pore former of the total weight of the green body in step a) of is between 2 and 60% by weight, preferably 2 and 50% by weight, more preferably 10 and 50% by weight, more preferably 10 and 30% by weight, more preferably 15 and 20% by weight.'}5. The method as claimed in any of to claim 2 ,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'characterized in that the heating in step b) of is conducted at a heating rate of 2 to 80° C./h, preferably 20 to 60° C./h ...

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Номер записи: 66
18-02-2021 дата публикации

Ceramic Part Having At Least One Ceramic Foam for Medical Applications

Номер: US20210046211A1
Автор: DEISINGER Ulrike, GÖTZ Michael, REMPP Andreas
Принадлежит:

The invention relates to the use of ceramic parts that at least partly consist of a ceramic foam in the field of medical technology. 1. Ceramic part for medical applications which consists of a porous region and optionally a dense region , wherein the porous region consists of a ceramic foam being formed by an oxide-ceramic material or a non-oxide-ceramic material.2. Ceramic part for medical applications according to claim 1 , wherein the ceramic foam is selected from the AlO—ZrOmixed-oxide system or ceramic composite materials in which zirconia constitutes the volume-dominant phase.3. Ceramic part for medical applications according to claim 1 , wherein a pore size of the porous region is between a few 10 μm and 1 mm.4. Ceramic part for medical applications according to claim 1 , wherein the porous region has a porosity of from 20 to 95%.5. Ceramic part for medical applications according to claim 1 , wherein the ceramic part is an implant.6. Ceramic part for medical applications according to claim 5 , wherein fastening means can be inserted into the porous region of the implant.7. Ceramic part for medical applications according to claim 6 , wherein the fastening means include screws claim 6 , pins claim 6 , and nails.8. Ceramic part for medical applications according to claim 6 , wherein the fastening means have a diameter of up to 5 mm.9. Ceramic part for medical applications according to claim 5 , wherein the porous region can be machined.10. Ceramic part for medical applications according to claim 9 , wherein the machining is carried out by grinding and/or drilling and/or nailing and/or screwing and/or pressing.11. Ceramic part for medical applications according to claim 1 , wherein the porous region can be connected to a non-ceramic material.12. Ceramic part for medical applications according to claim 11 , wherein the porous region and the non-ceramic material are connected by plastics infiltration and/or by bonding.13. Use of the ceramic part according to for ...

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Номер записи: 67
18-02-2021 дата публикации

Method of making ceramic matrix slurry infused ceramic tows and ceramic matrix composites

Номер: US20210047241A1
Автор: Aaron R. Beaber, Amy S. Barnes, Kari Ann Mcgee, Marc G. Simpson, Zeba PARKAR
Принадлежит: 3M Innovative Properties Co

Methods of making ceramic matrix prepregs are described. The methods include exposing a coated tow of ceramic fibers to a ceramic matrix slurry comprising a solvent and ceramic precursor. The coating is at least partially removed and the slurry infuses into the ceramic fibers to form prepreg. Steps to form ceramic matrix composites are also described, including forming the prepreg into a green body, and sintering the ceramic precursor.

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Номер записи: 68
18-02-2016 дата публикации

Handle Substrates for Composite Substrates for Semiconductors

Номер: US20160046528A1
Автор: Akiyoshi Ide, Hirokazu Nakanishi, Sugio Miyazawa, Tatsuro Takagaki, Yasunori Iwasaki
Принадлежит: NGK Insulators Ltd

An alumina purity of translucent polycrystalline alumina forming a handle substrate is 99.9 percent or higher, and a porosity of the polycrystalline alumina is 0.01% or more and 0.1% or less. A number of pores, each having a size of 0.5 μm or larger and included in a surface region on a side of a bonding face of the handle substrate is 0.5 times or less of a number of pores, each having a size of 0.1 μm or larger and 0.3 μm or smaller and contained in the surface region.

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Номер записи: 69
15-02-2018 дата публикации

Alumina sintered body and base substrate for optical device

Номер: US20180044195A1
Автор: Kei Sato, Kiyoshi MATSUSHIMA, Morimichi Watanabe, Tsutomu Nanataki
Принадлежит: NGK Insulators Ltd

An alumina sintered body according to the present invention includes a surface having a degree of c-plane orientation of 5% or more, the degree of c-plane orientation being determined by a Lotgering method using an X-ray diffraction profile obtained through X-ray irradiation at 2θ=20° to 70°. The alumina sintered body contains Mg and F, a Mg/F mass ratio is 0.05 to 3500, and a Mg content is 30 to 3500 ppm by mass. The alumina sintered body has a crystal grain size of 15 to 200 μm. When a field of view of 370.0 μm long×372.0 μm wide is photographed with a 1000-fold magnification and the photograph is visually observed, a number of pores having a diameter of 0.2 to 0.6 μm is 250 or less.

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Номер записи: 70
07-02-2019 дата публикации

CERAMIC MATERIAL AND ELECTROSTATIC CHUCK DEVICE

Номер: US20190043746A1
Автор: HIDAKA Nobuhiro, KUGIMOTO Hironori, YOSHIOKA Yoshiki
Принадлежит:

Provided is a composite sintered body for an electrostatic chuck, which is not easily broken even if it is exposed to high-power plasma. Further, provided are an electrostatic chuck device using such a composite sintered body for an electrostatic chuck and a method of manufacturing a composite sintered body for an electrostatic chuck. The composite sintered body for an electrostatic chuck is a composite sintered body including an insulating ceramic and silicon carbide, in which crystal grains of the silicon carbide are dispersed in at least one selected from the group consisting of a crystal grain boundary and a crystal grain of a main phase formed by sintering crystal grains of the insulating ceramic. 1. A ceramic material that is a composite sintered body including an insulating ceramic and silicon carbide ,wherein crystal grains of the silicon carbide are dispersed in at least one selected from the group consisting of a crystal grain boundary and a crystal grain of a main phase formed by sintering crystal grains of the insulating ceramic,a content of crystal grains having a β-SiC type crystal structure is more than 60% by volume with respect to a total amount of the crystal grains of the silicon carbide,the composite sintered body includes pores which are present in a crystal grain boundary, anda ratio of an apparent density of the composite sintered body with respect to a hypothetical true density when the composite sintered body is assumed not to include the pores is 97% or more.2. The ceramic material according to claim 1 ,wherein the ceramic material includes a portion in which the crystal grains having the β-SiC type crystal structure are sintered with each other.3. The ceramic material according to claim 1 ,wherein a grain diameter obtained from an X-ray diffraction result of the crystal grain of the silicon carbide is 50 nm or more.4. The ceramic material according to claim 1 ,wherein the insulating ceramic is aluminum oxide.5. A ceramic material which is ...

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Номер записи: 71
15-02-2018 дата публикации

LITHIUM STUFFED GARNET SETTER PLATES FOR SOLID ELECTROLYTE FABRICATION

Номер: US20180045465A1
Автор: DONNELLY Niall, Holme Tim, IYER Sriram
Принадлежит:

Setter plates are fabricated from Li-stuffed garnet materials having the same, or substantially similar, compositions as a garnet Li-stuffed solid electrolyte. The Li-stuffed garnet setter plates, set forth herein, reduce the evaporation of Li during a sintering treatment step and/or reduce the loss of Li caused by diffusion out of the sintering electrolyte. Li-stuffed garnet setter plates, set forth herein, maintain compositional control over the solid electrolyte during sintering when, upon heating, lithium is prone to diffuse out of the solid electrolyte. 119-. (canceled)20. A setter plate for fabricating solid electrolytes of a rechargeable battery , the setter plate comprising:{'sub': x', 'y', 'z', 't', '2', '3, 'a Li-stuffed garnet compound characterized by the formula LiLaZrO.qAlO, wherein 4 Подробнее

Номер записи: 72
18-02-2016 дата публикации

SUPPORTING SUBSTRATE FOR COMPOSITE SUBSTRATE AND COMPOSITE SUBSTRATE

Номер: US20160049469A1
Автор: ICHIMURA Mikiya, Imai Katsuhiro, Yoshikawa Jun
Принадлежит:

A supporting substrate for a composite substrate comprises a ceramic and has a polished surface for use in bonding. An orientation degree of the ceramic forming the supporting substrate .at the polished surface is 50% or higher, and an aspect ratio of each crystal grain included in the supporting substrate is 5.0 or less. 1. A supporting substrate for a composite substrate , said supporting substrate comprising a ceramic and having a polished surface for use in bonding:wherein an orientation degree of said ceramic at said polished surface is 50% or higher; andwherein an aspect ratio of crystal grains forming said supporting substrate is 5.0 or less.2. The supporting substrate for a composite substrate of claim 1 , wherein an average crystal grain size of said ceramic is 100 μm or less.3. The supporting substrate for a composite substrate of claim 1 , wherein an average crystal grain size of said ceramic is 2 μm or more.4. The supporting substrate for a composite substrate of claim 1 , wherein said ceramic comprises alumina claim 1 , cordierite or zinc oxide as a principal component.5. The supporting substrate for a composite substrate of claim 1 , wherein said polished surface of said supporting substrate comprises a non-polar surface.6. A composite substrate claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'said supporting substrate of ; and'}a functional layer bonded to said polished surface of said supporting substrate directly or via a bonding layer, said functional layer comprising a semiconductor, a piezoelectric material or a dielectric material.7. The composite substrate of claim 6 , wherein said functional layer comprises a piezoelectric single crystal and comprises a propagation substrate transferring an acoustic wave.8. The composite substrate of claim 6 , wherein said functional layer comprises a single-crystal silicon.9. The composite substrate of claim 6 , wherein said functional layer comprises a GaN-based semiconductor. The ...

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Номер записи: 73
25-02-2021 дата публикации

Method of densifying a ceramic matrix composite using a filled tackifier

Номер: US20210053882A1
Автор: Andrew J. Lazur, Jeremy R. Hart, Kathryn S. Read, Richard Wesley Jackson
Принадлежит: Raytheon Technologies Corp

A method of producing an enhanced ceramic matrix composite includes applying a tackifier compound to a fiber preform. The tackifier compound includes inorganic filler particles. The method further includes modifying the tackifier compound such that the inorganic filler particles remain interspersed throughout the fiber preform, and occupy pores of fiber preform.

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Номер записи: 74
13-02-2020 дата публикации

HEAT-DISSIPATING MEMBER AND ELECTRONIC DEVICE USING SAME

Номер: US20200049433A1
Автор: MATSUSHITA Kouji
Принадлежит:

A heat-dissipating member includes aluminum oxide ceramics that includes crystal particles of aluminum oxide. The aluminum oxide ceramics includes 98 mass % or higher of aluminum in terms of AlOwith respect to 100 mass % of all constituents. The crystal particles have an average equivalent circle diameter of 1.6 μm or more and 2.4 μm or less. An equivalent circle diameter cumulative distribution curve of the crystal particles has a first diameter at 10 cumulative percent and a second diameter at 90 cumulative percent that is different from the first diameter by 2.1 μm or more and 4.2 μm or less. 1. A heat-dissipating member , comprising comprising crystal particles of aluminum oxide having an average equivalent circle diameter of 1.6 μm or more and 2.4 μm or less; and', {'sub': 2', '3, 'being 98 mass % or higher of aluminum in terms of AlOwith respect to 100 mass % of all constituents,'}], 'aluminum oxide ceramics a first diameter at 10 cumulative percent; and', 'a second diameter at 90 cumulative percent that is different from the first diameter by 2.1 μm or more and 4.2 μm or less., 'an equivalent circle diameter cumulative distribution curve of the crystal particles has, 'wherein'}2. The heat-dissipating member according to claim 1 , whereinan average aspect ratio of crystal particles having an equivalent circle diameter of 3.0 μm or more is 1.25 or more and 1.80 or less.3. The heat-dissipating member according to claim 1 , wherein{'sub': '2', 'the aluminum oxide ceramics further comprise: silicon, calcium, and magnesium, and a total content of silicon, calcium, and magnesium in terms of SiO, CaO, and MgO, respectively, is 0.5 mass % or more and 2.0 mass % or less with respect to 100 mass % of the all constituents.'}4. The heat-dissipating member according to claim 3 , wherein{'sub': 2', '2, 'a mass ratio CaO/SiOof the calcium to the silicon in terms of CaO and SiO, respectively, is 0.2 or more and 0.8 or less.'}5. The heat-dissipating member according to claim 1 ...

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Номер записи: 75
10-03-2022 дата публикации

HEAT-RESISTANT MEMBER

Номер: US20220073430A1
Автор: KIKUCHI Kentaro, TAKENOSHITA Hidehiro, TOYODA Satoshi, UENO Takahiro
Принадлежит:

A heat-resistant member of the present disclosure is formed of an alumina-based ceramic containing alumina crystals and a glass formed of Si, Ca, Mg, and O, and an area ratio occupied by the glass in an inner portion is larger than an area ratio occupied by the glass in the surface portion. 1. A heat-resistant member comprisingan alumina-based ceramic containing alumina crystals and a glass formed of Si, Ca, Mg, and O,wherein an area ratio occupied by the glass in an inner portion is larger than an area ratio occupied by the glass in a surface portion.2. The heat-resistant member according to claim 1 , wherein the area ratio occupied by the glass in the inner portion is larger than the area ratio occupied by the glass in the surface portion by 4 area % or more.3. The heat-resistant member according to claim 1 , wherein the area ratio occupied by the glass in the surface portion is 20 area % or less.4. The heat-resistant member according to claim 1 , wherein an average equivalent circle diameter of the alumina crystals in the surface portion is smaller than an average equivalent circle diameter of the alumina crystals in the inner portion.5. The heat-resistant member according to claim 1 , wherein a mean distance between centers of gravity of the alumina crystals in the surface portion is less than a mean distance between centers of gravity of the alumina crystals in the inner portion. The present disclosure relates to a heat-resistant member.A heat-resistant member that is less likely to be damaged even when used at a temperature of approximately 600° C. is used in a product that is assumed to be used at high temperatures, such as a heater used for heating the interior of a vehicle, for example.Here, as a material of the heat-resistant member, an alumina-based ceramic that is resistant to oxidation even at a temperature of approximately 600° C. in an atmospheric environment and that can be used for a long period of time is widely employed (see Patent Document 1, for ...

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Номер записи: 76
03-03-2016 дата публикации

Manufacturing method of femoral condyle prosthesis

Номер: US20160059317A1
Автор: Yadong Li, Yajun Li
Принадлежит: Individual

A manufacturing method of a femoral condyle prosthesis having a multilayer shell-core composite structure comprises the following procedures: (1) respectively preparing feeding material for injection forming of a core layer, a buffer layer and a shell layer, wherein the powders of feeding material of the core layer and the shell layer are selected from one or more of metallic powder, ceramic powder or toughening ceramic powder, and are different from each other, and the powder of feeding material of the buffer layer is gradient composite material powder; (2) layer by layer producing the blank of multilayer shell-core composite structural component by powder injection molding; (3) degreasing the blank; (4) sintering the blank to obtain the multilayer shell-core composite structural component. The femoral condyle prosthesis has the advantages of high surface hardness, abrasion resistance, uniform thickness of the shell layer, stable and persistent performance.

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Номер записи: 77
21-02-2019 дата публикации

Three-Dimensional (3D) Printing With A Sintering Aid/Fixer Fluid And A Liquid Functional Material

Номер: US20190054651A1
Автор: Abbott, Flynn Joshua, JR. James Elmer, Kasperchik Vladek
Принадлежит: Hewlett-Packard Development Company, L.P.

In an example of a three-dimensional (3D) printing method, a ceramic build material is applied. A liquid functional material, including an anionically stabilized susceptor material, is applied to at least a portion of the ceramic build material. A sintering aid/fixer fluid, including a cationically stabilized amphoteric alumina particulate material, is applied to the at least the portion of the ceramic build material. The applied anionically stabilized susceptor material and the applied cationically stabilized amphoteric alumina particulate material react to immobilize the anionically stabilized susceptor material, thereby patterning the at least the portion of the ceramic build material. 1. A three-dimensional (3D) printing method , comprising:applying a ceramic build material;applying a liquid functional material, including an anionically stabilized susceptor material, to at least a portion of the ceramic build material; andapplying a sintering aid/fixer fluid, including a cationically stabilized amphoteric alumina particulate material, to the at least the portion of the ceramic build material,the applied anionically stabilized susceptor material and the applied cationically stabilized amphoteric alumina particulate material reacting to immobilize the anionically stabilized susceptor material, thereby patterning the at least the portion of the ceramic build material.2. The 3D printing method as defined in wherein the liquid functional material is applied before the sintering aid/fixer fluid.3. The 3D printing method as defined in wherein the liquid functional material and the sintering aid/fixer fluid are applied simultaneously from separate applicators.4. The 3D printing method as defined in wherein the application of the ceramic build material claim 1 , the liquid functional material claim 1 , and the sintering aid/fixer fluid forms a first layer of a green body claim 1 , and wherein the method further comprises heating the green body using microwave radiation ...

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Номер записи: 78
01-03-2018 дата публикации

Ceramic cutting tool

Номер: US20180056532A1
Автор: Takanori Nishihara
Принадлежит: Kyocera Corp

Provided is a ceramic cutting tool including a blade body containing zirconium oxide as a primary component, the blade body containing particles containing any one of aluminum oxide, silicon carbide, or silicon nitride as a primary component.

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Номер записи: 79
03-03-2016 дата публикации

HIGH STRENGTH TRANSPARENT CERAMIC USING CORUNDUM POWDER AND METHODS OF MANUFACTURE

Номер: US20160060173A1
Автор: ALAKEEL Akeel Khalid, BINHUSSAIN MOHAMMED A., BINMAJID Majid Mohammed, KLIMKE Jens
Принадлежит:

High strength transparent corundum ceramics using corundum powder and methods of manufacture are disclosed. The method of forming transparent corundum ceramics includes milling corundum powder in aqueous slurry with beads. The method further includes processing the slurry by a liquid shaping process to form a gelled body. The method further includes sintering the gelled body in air and pressing the gelled body by hot isostatic pressing to form a ceramic body. 1. A method of forming transparent corundum ceramics , comprising:milling corundum powder in an aqueous slurry with beads;processing the slurry by a liquid shaping process to form a gelled body;sintering the gelled body in air; andpressing the gelled body by hot isostatic pressing to form a ceramic body.2. The method of claim 1 , wherein the corundum powder has a BET of 15-24 m/g.3. The method of claim 2 , wherein the corundum powder has a BET of 17-21 m/g.4. The method of claim 3 , wherein the sintering of the ceramic body in air is at a temperature between 1150° C.-1170° C. and the hot isostatic pressing is provided in Argon claim 3 , Nitrogen or Oxygen at a temperature between 1100° C.-1150° C.5. The method of claim 4 , wherein the sintering is performed at 1-10 K/min claim 4 , preferred 5 K/min. to 950° C. and 2 K/min. to final temperature and the hot isostatic pressing is performed at between 50 and 200 MPa.6. The method of claim 5 , wherein the sintering is performed at 5 K/min.7. The method of claim 4 , wherein the slurry is aqueous slurry comprising distilled water claim 4 , stabilisator for the repulsion of the corundum particles and a sintering aid.8. The method of claim 7 , wherein the sintering aid is MgO or MgO precursors.9. The method of claim 4 , wherein the beads are dense sintered corundum beads with sub-μm grain size.10. The method of claim 9 , wherein a relation of the corundum beads to powder is between 1:2 and 1:4.11. The method of claim 9 , wherein the processing comprises adding the ...

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Номер записи: 80
21-02-2019 дата публикации

Copper-ceramic composite

Номер: US20190055167A1
Автор: Chrisitan Muschelknautz, Kai Herbst
Принадлежит: Heraeus Deutschland GmbH and Co KG

The invention relates to a copper-ceramic composite comprising: a ceramic substrate containing alumina; a copper or copper alloy coating on the ceramic substrate; the alumina has a mean grain shape factor Ra(Al2O3), defined as the arithmetic mean of the shape factors R of the alumina grains, of at least 0.4.

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Номер записи: 81
20-02-2020 дата публикации

Porous shaped metal-carbon products

Номер: US20200055029A1
Автор: Alfred Hagemeyer, Elif Ispir GÜRBÜZ, Eric L. Dias, Guang Zhu, James A.W. Shoemaker, Valery Sokolovskii
Принадлежит: Archer Daniels Midland Co

The present invention provides a porous metal-containing carbon-based material that is stable at high temperatures under aqueous conditions. The porous metal-containing carbon-based materials are particularly useful in catalytic applications. Also provided, are methods for making and using porous shaped metal-carbon products prepared from these materials.

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Номер записи: 82
21-02-2019 дата публикации

Ceramic particles for use in a solar power tower

Номер: US20190056150A1
Автор: Benjamin Eldred, Claude Krause, Steve Canova
Принадлежит: Carbo Ceramics Inc

Ceramic particles for use in a solar power tower and methods for making and using the ceramic particles are disclosed. The ceramic particle can include a sintered ceramic material formed from a mixture of a ceramic raw material and a darkening component comprising MnO as Mn 2+ . The ceramic particle can have a size from about 8 mesh to about 170 mesh and a density of less than 4 g/cc.

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Номер записи: 83
02-03-2017 дата публикации

DIELECTRIC MATERIAL AND ELECTROSTATIC CHUCKING DEVICE

Номер: US20170057875A1
Автор: ISHIZUKA Masayuki, NAGATOMO Hiroaki
Принадлежит:

A dielectric material includes a composite sintered body in which conductive particles are dispersed in an insulating material, in which a dielectric constant at a frequency of 40 Hz is 10 or higher, and a difference between a maximum dielectric loss value and a minimum dielectric loss value at a frequency of 1 MHz in a surface of the composite sintered body is 0.002 or less. 1. A dielectric material , whereinthe dielectric material is a composite sintered body in which conductive particles are dispersed in an insulating material,a dielectric constant of the dielectric material at a frequency of 40 Hz is 10 or higher, anda difference between a maximum value and a minimum value of dielectric loss of the dielectric material wherein the dielectric loss is measured at a frequency of 1 MHz on the surface of the composite sintered body is 0.002 or less.2. The dielectric material according to claim 1 ,{'sup': '13', 'wherein a volume resistivity at 20° C. of the dielectric material is 10Ω·cm or higher, and'}a withstand voltage at 20° C. of the dielectric material is 5 kV/mm or higher.3. The dielectric material according to claim 1 ,{'sup': '13', 'wherein a volume resistivity at 120° C. of the dielectric material is 10Ω·cm or higher, and'}a withstand voltage at 20° C. of the dielectric material is 5 kV/mm or higher.4. The dielectric material according to claim 1 ,wherein a thermal conductivity of the dielectric material is 20 W/m·K or higher.5. The dielectric material according to claim 1 ,wherein dielectric loss at a frequency of 40 Hz of the dielectric material is 0.01 or higher and 0.05 or lower.6. An electrostatic chuck device comprisinga base having a main surface on which a plate-like sample is electrostatically attracted,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein the base is formed of the dielectric material according to .'}7. The dielectric material according to claim 1 ,wherein the insulating material is an insulating ceramic.8. The dielectric ...

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Номер записи: 84
21-02-2019 дата публикации

MWIR/LWIR TRANSPARENT, CONDUCTIVE COATINGS

Номер: US20190056532A1
Автор: Schwartz Bradley Dean
Принадлежит:

An optical system includes a housing, an imaging device housed within the housing, and a window in the housing providing an optical path through the housing to the imaging device. The window includes a transparent substrate and a coating over the transparent substrate. The coating is made of an electrically conductive semiconductor. The imaging device is sensitive to and the coating is transparent to at least one of MWIR and/or LWIR wavelengths. 1. (canceled)2. The window as recited in claim 18 , wherein the coating has its peak transmission in MWIR wavelengths.3. The optical system as recited in claim 2 , wherein the transparent substrate includes sapphire claim 2 , Aluminum Oxynitride (AlON) claim 2 , and/or Spinel.4. The optical system as recited in claim 18 , wherein the coating is transparent in LWIR wavelengths.5. The optical system as recited in claim 4 , wherein the transparent substrate includes at least one of ZnS and/or ZnSe.6. The optical system as recited in claim 18 , wherein the coating includes InAs.7. The optical system as recited in claim 18 , wherein the coating is doped with at least one of Te claim 18 , S claim 18 , Se claim 18 , Si claim 18 , and/or Sn.8. The optical system as recited in claim 18 , wherein the coating includes InGaAs.9. The optical system as recited in claim 18 , wherein the coating includes InAlAs.10. The optical system as recited in claim 18 , wherein the coating is formed as a film on the transparent substrate by at least one of metalorganic chemical vapor deposition (MOCVD) claim 18 , evaporation claim 18 , molecular beam epitaxy (MBE) claim 18 , chemical spray pyrolysis claim 18 , chemical vapor deposition (CVD) claim 18 , and/or aerosol-assisted CVD.11. The optical system as recited in claim 18 , wherein the coating is embedded in a pattern in the transparent substrate.12. The optical system as recited in claim 11 , wherein the pattern includes a grid.13. The optical system as recited in claim 11 , wherein the coating and ...

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Номер записи: 85
02-03-2017 дата публикации

NANOPARTICLE-REINFORCED COMPOSITES AND METHODS OF MANUFACTURE AND USE

Номер: US20170058407A1
Автор: Xu Chengying
Принадлежит:

Composite structures and methods of their manufacture are provided. In one embodiment, the composite structure includes a substrate which includes a relatively soft material, and nanoparticles which include a relatively hard material and which are embedded (i) within at least a surface region of the substrate, or (ii) uniformly within and throughout the substrate, in an amount effective to improve the wear resistance of the substrate. Methods for forming these composite structures include a hot-rolling process, a roll-bonding process, or a combination thereof. 1. A method for forming a composite structure , the method comprising:heating a metal substrate material to a selected temperature to form a heated metal substrate;disposing a plurality of ceramic nanoparticles onto a surface of the heated metal substrate; andapplying a roller across the surface of the heated metal substrate under a pressure effective to embed the ceramic nanoparticles within a surface region of the heated metal substrate.2. The method of claim 1 , wherein the metal substrate material has a Brinell hardness between 40 MPa and 4 claim 1 ,000 MPa and the ceramic nanoparticles have a Brinell hardness greater than 10 claim 1 ,000 MPa.3. The method of claim 1 , wherein the metal substrate material has a recrystallization temperature that is lower than the selected temperature.4. The method of claim 1 , wherein the disposing comprises spraying a suspension of the nanoparticles dispersed in a liquid vehicle onto the surface of the heated metal substrate.5. The method of claim 1 , wherein the metal substrate material comprises aluminum claim 1 , magnesium claim 1 , titanium claim 1 , or an alloy thereof.6. The method of claim 1 , wherein the ceramic nanoparticles have an average longest dimension from about 50 nm to about 200 nm.7. The method of claim 1 , wherein the ceramic nanoparticles comprises aluminum oxide claim 1 , silicon carbide claim 1 , or a combination thereof.8. A method for forming a ...

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Номер записи: 86
05-03-2015 дата публикации

Honeycomb catalyst and exhaust gas purifying apparatus

Номер: US20150065334A1
Автор: Masaya Sato, Naoki Onaya, Takehiro Umemoto
Принадлежит: Ibiden Co Ltd

A honeycomb catalyst includes a honeycomb unit. The honeycomb unit has a plurality of through holes that are arranged in parallel in a longitudinal direction and partitions that are provided between the plurality of through holes. The honeycomb unit includes a zeolite, inorganic particles, and an inorganic binder. The zeolite includes a CHA-structured aluminosilicate having a Si/Al ratio of about 15 to about 50. The inorganic particles includes an oxide that has a positive coefficient of thermal expansion. A volume ratio of the zeolite to the inorganic particles is about 50:about 50 to about 90:about 10.

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Номер записи: 87
02-03-2017 дата публикации

Lithium stuffed garnet setter plates for solid electrolyte fabrication

Номер: US20170062873A1
Автор: Niall DONNELLY, Sriram Iyer, Tim Holme
Принадлежит: Quantumscape Corp

Setter plates are fabricated from Li-stuffed garnet materials having the same, or substantially similar, compositions as a garnet Li-stuffed solid electrolyte. The Li-stuffed garnet setter plates, set forth herein, reduce the evaporation of Li during a sintering treatment step and/or reduce the loss of Li caused by diffusion out of the sintering electrolyte. Li-stuffed garnet setter plates, set forth herein, maintain compositional control over the solid electrolyte during sintering when, upon heating, lithium is prone, to diffuse out of the solid electrolyte.

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Номер записи: 88
28-02-2019 дата публикации

PROCESS FOR MAKING HIGH-PURITY ALUMINUM OXIDE

Номер: US20190062174A1
Автор: Nichol Scott, SMITH Daniel
Принадлежит:

A method comprises reacting an aluminum feedstock with an acid in the presence of water to provide an aluminum salt solution comprising an aluminum salt in water, wherein the aluminum salt comprises a reaction product of the acid and aluminum, and spray roasting the aluminum salt solution at a temperature of at least about 450° C. to provide an aluminum oxide powder, wherein the spray roasting is performed in a furnace lined with a refractory comprising alumina that is at least about 99.2% purity alumina, and wherein the aluminum oxide powder is 99.2% pure aluminum oxide or greater. 1. A method comprising:(a) reacting an aluminum feedstock with an acid in the presence of water to provide a first aluminum salt solution comprising an aluminum salt in water, wherein the aluminum salt comprises a reaction product of the acid and aluminum;(b) heating the first aluminum salt solution to provide a mother liquor and solid aluminum salt;(c) separating the solid aluminum salt from the mother liquor;(d) dissolving at least a portion of the separated solid aluminum salt with water to provide a second aluminum salt solution;(e) spray roasting the second aluminum salt solution at a temperature of at least about 450° C. to provide an aluminum oxide powder, wherein the spray roasting is performed in a furnace lined with a refractory comprising alumina that is at least about 99.2% purity alumina; andwherein the aluminum oxide powder is 99.2% pure aluminum oxide or greater.2. The method of claim 1 , further comprising (f) sintering the aluminum oxide powder.3. The method of claim 1 , further comprising (f) washing the aluminum oxide powder claim 1 , wherein the washed aluminum oxide powder is 99.2% pure aluminum oxide or greater.4. The method of claim 1 , wherein spray roasting the second aluminum salt solution comprises spraying the second aluminum salt solution into a furnace that is heated to drive off liquid from the second aluminum salt solution and to convert the dissolved ...

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Номер записи: 89
17-03-2022 дата публикации

COMPOSITE SINTERED BODY, SEMICONDUCTOR MANUFACTURING APPARATUS MEMBER, AND METHOD OF PRODUCING COMPOSITE SINTERED BODY

Номер: US20220081365A1
Автор: ATSUJI Kyohei, MIYANISHI Keita, NAGAI Asumi, YAMAGUCHI Hirofumi
Принадлежит: NGK Insulators, Ltd.

A composite sintered body includes a base material that includes ceramic as a main component, and an electrode arranged inside the base material or on a surface of the base material. The electrode contains W and ZrO. 1. A composite sintered body comprising:a base material including ceramic as a main component; andan electrode arranged inside said base material or on a surface of said base material,wherein said electrode contains:tungsten; andzirconium oxide.2. The composite sintered body according to claim 1 , whereinan absolute value of a difference in thermal expansion coefficient between said electrode and said base material is less than or equal to 0.5 ppm/° C. within a range of temperatures higher than or equal to 40° C. and lower than or equal to 1000° C.3. The composite sintered body according to claim 1 , wherein{'sup': '−5', 'said electrode has a resistivity lower than or equal to 3.5×10Ω·cm at a room temperature.'}4. The composite sintered body according to claim 1 , whereinsaid electrode has an intensity ratio of main peaks of said tungsten and said zirconium oxide higher than or equal to 0.90 and lower than 0.96, the intensity ratio being obtained by an X-ray diffraction method.5. The composite sintered body according to claim 1 , whereina total content of said tungsten and said zirconium oxide in said electrode is 100% by volume.6. The composite sintered body according to claim 1 , whereinsaid zirconium oxide has a sintered particle diameter greater than or equal to 0.7 μm and less than or equal to 3.0 μm.7. The composite sintered body according to claim 1 , whereinan absolute value of a difference in sintered particle diameter between said zirconium oxide and said tungsten is less than or equal to 0.5 μm.8. The composite sintered body according to claim 1 , whereinthe main component of said base material is aluminum oxide, andsaid base material contains 95% by mass or more of said aluminum oxide.9. A semiconductor manufacturing apparatus member for use ...

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Номер записи: 90
17-03-2022 дата публикации

Shaped body and method for producing a shaped body

Номер: US20220082463A1
Автор: Rafael Schmitt, Srdan Vasic
Принадлежит: Exentis Knowledge GmbH

Shaped body, in particular for a pressure sensor, having a membrane and having a supporting section supporting the membrane, the membrane being produced at least in sections from a ceramic material by means of additive manufacturing, in particular 3D screen printing, and having at least in sections a thickness of less than 0.5 mm.

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Номер записи: 91
28-02-2019 дата публикации

PRE-STRESSED CURVED CERAMIC PLATES/TILES AND METHOD OF PRODUCING SAME

Номер: US20190063879A1
Автор: CHEREVATSKY Abel, YAVIN Benjamin
Принадлежит:

A pre-stressed curved plate comprising a curved plate having at least one concave surface, the curved plate being enveloped and adhesively bonded with tensioned reinforcing fibers, whereby the reinforcing fibers are first wound around the plate under tension being spaced apart from the concave surface and subsequently subjected to pressure to stretch and bond the reinforcing fibers to the surfaces of the plate, where upon bonding, the tensile strain of the fiber introduces stress in the plate. 1. A pre-stressed curved plate comprising:a curved ceramic plate having at least one concave surface; andreinforcing fibers that are wound around the ceramic plate,wherein the reinforcing fibers are under tension and adhesively bonded thereto, whereby the curved ceramic plate is maintained under compression stress.2. The curved plate in accordance with claim 1 , wherein the curved ceramic plate is a ceramic tile.3. The curved plate in accordance with claim 2 , wherein the ceramic plate is made of aluminum oxide (Al2O3); hot pressed claim 2 , sintered or reaction bonded boron carbide (B4C); silicon carbide (SiC); boron silicon carbide (BSC);titanium diboride (Ti B2); aluminum nitride; silicon nitride; and glass-ceramic, or combinations thereof.4. The curved plate in accordance with claim 1 , wherein the ceramic plate has a thickness between 3-30 mm.5. The curved plate in accordance with claim 1 , wherein the reinforcing fibers are selected from aramid claim 1 , poly(p-phenylene-2 claim 1 , 6-benzobisoxazole) claim 1 , S or E glass claim 1 , carbon claim 1 , thermoplastics (polyamide claim 1 , HMWPE claim 1 , polyethylene claim 1 , polypropylene) or metal (boron claim 1 , steel claim 1 , aluminum) fibers or their combination.6. The curved plate in accordance with claim 1 , wherein the adhesive is selected from epoxy claim 1 , phenolic claim 1 , thermoplastic claim 1 , thermosetting adhesives claim 1 , rubber or elastomer based adhesives and ceramic adhesives.7. The curved plate ...

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Номер записи: 92
27-02-2020 дата публикации

EROSION-RESISTANT CERAMIC MATERIAL, POWDER, SLIP AND COMPONENT

Номер: US20200062652A1
Автор: Krausz Ivo, Lange Friederike, Nikasch Christian
Принадлежит:

The use of magnesium oxide, reactive alumina and aluminium oxide as a base provides for a new erosion-resistant material upon sintering. 1. A powder comprising (in % by weight):aluminum oxide in an amount of from 92.0% to <99.0%; andspinel in a proportion of 8.0%-1.0%.2. A powder comprising (in % by weight):from 96.0% to 99.9% of aluminum oxide; andreactive magnesium oxide in an amount of from 0.1% to 4.0%, to form spinel with the aluminum oxide present.3. The powder as claimed in claim 1 , which contains γ′-aluminum oxide.4. The powder as claimed in claim 1 , which contains α-alumina as aluminum oxide.5. The powder as claimed in claim 1 , which contains tabular aluminas as aluminum oxide.6. The powder as claimed in claim 1 , which contains reactive alumina as aluminum oxide as an additive for reducing a water content and for improving a processability in a ceramic slip claim 1 , in a proportion of from 10% by weight to 25% by weight.7. The powder as claimed in claim 5 , wherein the tabular alumina has at least three different particle size fractions.8. The powder as claimed in claim 6 , wherein the reactive alumina has at least two different particle size fractions.9. The powder as claimed in claim 5 , wherein the tabular aluminas have a maximum particle size of up to 10 mm.10. The powder as claimed in claim 2 , wherein the reactive magnesium oxide has a citric acid activity of from 10 seconds to 250 seconds.11. A ceramic produced using a powder as claimed in claim 1 , comprising at least (in % by weight):aluminum oxide as matrix material in an amount of from 92.0% to <99.0%; andspinel in a proportion of 8.0%-1.0%.12. The ceramic as claimed in claim 11 , wherein aluminum oxide is present as α-alumina.13. The ceramic as claimed in claim 11 , wherein aluminum oxide is present as tabular aluminas.14. The ceramic as claimed in claim 11 , wherein aluminum oxide is present as reactive alumina in order to reduce a water content and to improve a processability in a ceramic ...

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Номер записи: 93
09-03-2017 дата публикации

ALUMINA-BASED FILLING SAND FOR SLIDING NOZZLE

Номер: US20170066689A1
Автор: Kawakami Manabu, NISHIDA Yoshikatsu
Принадлежит:

An alumina-based filling sand for sliding nozzle comprising at least 50 wt % of mixed sand including 20 to 90 vol % of alumina sand and 80 to 10 vol % of silica sand, wherein the alumina sand has surface irregularities of 1.3 or less and comprises 50 wt % or more of an AlOcomponent. 1. An alumina-based filling sand for sliding nozzle comprising at least 50 wt % of mixed sand including 20 to 90 vol % of alumina sand and 80 to 10 vol % of silica sand , wherein the alumina sand has surface irregularities of 1.3 or less and comprises 50 wt % or more of an AlOcomponent.2. The alumina-based filling sand for sliding nozzle of claim 1 , wherein the alumina sand has 8 wt % or less of FeO.3. The alumina-based filling sand for sliding nozzle of claim 1 , wherein the alumina sand has an average particle diameter within a range from 0.2 to 1.0 mm.4. The alumina-based filling sand for sliding nozzle of claim 1 , wherein the silica sand had an average particle diameter within a range from 0.2 to 1.0 mm.5. The alumina-based filling sand for sliding nozzle of claim 1 , wherein the silica sand and the alumina sand both are coated with carbon claim 1 , or either the silica sand or the alumina sand is coated with carbon.6. The alumina-based filling sand for sliding nozzle of claim 1 , wherein the alumina sand has surface irregularities of 1.2 or less. The present invention relates to alumina-based filling sand for sliding nozzle. More specifically, the present invention relates to the alumina-based filling sand for sliding nozzle that forms an opening where the filling sand falls through smoothly without being molten and sintered by a molten metal (molten steel) poured into a ladle used in a steel mill and that does not allow the molten steel to permeate into the filling sand (in other words, the sand itself in a sliding nozzle is not melted and sintered by the molten steel and does not allow the molten steel to permeate into gaps between sand particles).A ladle for receiving molten ...

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Номер записи: 94
08-03-2018 дата публикации

GARNET MATERIALS FOR LI SECONDARY BATTERIES AND METHODS OF MAKING AND USING GARNET MATERIALS

Номер: US20180069263A1
Автор: CHOI Dong Hee Anna, DONNELLY Niall, Holme Tim, HUDSON Will, IYER Sriram, KARPENKO Oleh, KERMAN Kian, SINGH Mohit, WINOTO Adrian
Принадлежит:

Disclosed herein are garnet material compositions, e.g., lithium-stuffed garnets and lithium-stuffed garnets doped with alumina, which are suitable for use as electrolytes and catholytes in solid state battery applications. Also disclosed herein are lithium-stuffed garnet thin films having fine grains therein. Also disclosed herein are methods of making and using lithium-stuffed garnets as catholytes, electrolytes and/or anolytes for all solid state lithium rechargeable batteries. Also disclosed herein are electrochemical devices which incorporate these garnet catholytes, electrolytes and/or anolytes. Also disclosed herein are methods for preparing dense thin (<50 um) free standing membranes of an ionically conducting material for use as a catholyte, electrolyte, and, or, anolyte, in an electrochemical device, a battery component (positive or negative electrode materials), or a complete solid state electrochemical energy storage device. Also disclosed herein are sintering techniques, e.g., for heating and/or field assisted (FAST) sintering, for solid state energy storage devices and the components thereof. 21. (canceled)22. A sintered film comprising:a first layer comprising a sintered lithium-stuffed garnet; anda second layer interfacing the first layer, the second layer comprising a sintered metal;wherein the sintered film thickness is less than 200 μm and greater than 1 nm.23. The film of claim 22 , wherein the lithium-stuffed garnet comprises at least one member selected from the group consisting of LiLaM′M″ZrO claim 22 , LiLaM′M″TaO claim 22 , and LiLaM′M″NbO claim 22 , wherein 4 Подробнее

Номер записи: 95
07-03-2019 дата публикации

PROPPANT PARTICLES FORMED FROM SLURRY DROPLETS AND METHODS OF USE

Номер: US20190071366A1
Автор: Duenckel Robert, ELDRED Benjamin T., GARDINIER Clayton F., WILSON Brett A.
Принадлежит:

Proppant particles formed from slurry droplets and methods of use are disclosed herein. The proppant particles can include a sintered ceramic material and can have a size of about 80 mesh to about 10 mesh and an average largest pore size of less than about 20 microns. The methods of use can include injecting a hydraulic fluid into a subterranean formation at a rate and pressure sufficient to open a fracture therein and injecting a fluid containing a proppant particle into the fracture, the proppant particle including a sintered ceramic material, a size of about 80 mesh to about 10 mesh, and an average largest pore size of less than about 20 microns. 1. A ceramic particle comprising a sintered ceramic material and having an average largest pore size of less than about 25 microns and a surface roughness of less than about 4 μm.2. The ceramic particle of claim 1 , wherein the ceramic particle has a size of about 80 mesh to about 10 mesh.3. The ceramic particle of claim 2 , wherein the ceramic particle has a surface roughness of less than about 2 μm and an average largest pore size of less than about 20 microns.4. The ceramic particle of claim 1 , wherein the ceramic particle has less than 5 claim 1 ,000 visible pores at a magnification of 500× per square millimeter of particle.5. The ceramic particle of claim 1 , wherein the sintered ceramic material comprises kaolin.6. The ceramic particle of claim 1 , wherein the sintered ceramic material comprises bauxite.7. The ceramic particle of claim 1 , wherein the sintered ceramic material comprises alumina.8. The ceramic particle of claim 1 , wherein impinging a plurality of the particle under a gas-entrained velocity of about 260 m/s onto a flat mild steel target results in an erosivity of the target of about 1 mg/kg to about 100 mg/kg.9. The ceramic particle of claim 1 , wherein the surface roughness is from about 0.8 μm to about 1.6 μm.10. The ceramic particle of claim 1 , further comprising a spherical shape.11. The ...

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Номер записи: 96
16-03-2017 дата публикации

Composites of sintered Mullite reinforced corundum granules and method for its preparation

Номер: US20170073275A1
Автор: Chatterjee Amit, Shah Chetan Navnitlal, Shah Manan Chetan, Tilak Anurag
Принадлежит:

The present disclosure relates to a composite of sintered mullite reinforced corundum granules and a method for its preparation. The composite comprises mullite and corundum in an interlocking microstructure. The process for preparing the composite involves the steps of admixing the raw materials followed by sintering to obtain the composite comprising sintered mullite reinforced corundum granules. 1. A composite of sintered mullite reinforced corundum granules , comprising 6 to 80 wt % of mullite and 10 to 90 wt % of corundum , having particle size ranging from 0.25 mm to 1.5 mm;wherein, the mullite is obtained from clay and corundum is obtained from alumina ore; andwherein, the mullite and the corundum in the composite have an interlocking microstructure.2. The composite as claimed in claim 1 , wherein the clay is Kaolin.3. The composite as claimed in claim 1 , wherein the alumina ore is at least one selected from the group consisting of bauxite and aluminum trihydroxide.4. A method for preparing a composite of sintered mullite reinforced corundum granules comprising the following steps:a) grinding raw materials comprising at least one clay and at least one alumina ore, to obtain ground raw materials having particle size less than 45 microns;b) admixing the ground raw materials to obtain an admixture;c) granulating the admixture in the presence of at least one binder and optionally at least one additive to obtain granulated pellet; andd) sintering the granulated pellet in the temperature range of 1300° C. to 1600° C. to obtain the composite comprising sintered mullite reinforced corundum granules.5. The method as claimed in claim 4 , wherein the binder is at least one selected from the group consisting of bentonite claim 4 , starch and polyvinyl alcohol.6. The method as claimed in claim 4 , wherein the additive comprises at least one fluxing agent selected from the group consisting of potash feldspar and iron ore slime.7. The method as claimed in claim 4 , wherein ...

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Номер записи: 97
19-03-2015 дата публикации

CERAMIC CORE COMPOSITIONS, METHODS FOR MAKING CORES, METHODS FOR CASTING HOLLOW TITANIUM-CONTAINING ARTICLES, AND HOLLOW TITANIUM-CONTAINING ARTICLES

Номер: US20150078912A1
Автор: Bewlay Bernard Patrick, Ellis Brian Michael, McKIEVER Joan, MCLASKY Nicholas Vincent
Принадлежит: GENERAL ELECTRIC COMPANY

The disclosure relates generally to core compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to core compositions and methods for casting hollow titanium-containing articles, and the hollow titanium-containing articles so molded. 1. A ceramic core composition comprising calcium aluminate particles and one or more large scale particles.2. The composition of claim 1 , wherein the composition comprises fine scale calcium aluminate and wherein said large particles are hollow.3. The composition of claim 1 , wherein the calcium aluminate particles comprise particles of calcium monoaluminate.4. The composition of claim 1 , wherein the calcium aluminate particles comprise particles of calcium monoaluminate claim 1 , and calcium dialuminate.5. The composition of claim 1 , wherein the calcium aluminate particles comprise particles of calcium monoaluminate claim 1 , calcium dialuminate claim 1 , and mayenite.6. The composition of claim 1 , further comprising calcium aluminate with a particle size of less than about 50 microns.7. The composition of claim 1 , wherein large scale particles comprise hollow oxide particles.8. The composition of claim 1 , wherein said large scale particles are hollow and they comprise aluminum oxide particles claim 1 , magnesium oxide particles claim 1 , calcium oxide particles claim 1 , zirconium oxide particles claim 1 , titanium oxide particles claim 1 , or combinations thereof.9. The composition of claim 1 , wherein said large scale particles comprise a ceramic claim 1 , such as calcium aluminate claim 1 , calcium hexaluminate claim 1 , zirconia claim 1 , or combinations thereof.10. The composition of claim 7 , wherein said hollow oxide particles comprise hollow alumina spheres.11. The composition of claim 1 , wherein said large scale particles comprise particles that are more than about 70 microns in outside dimension.12. The composition of claim 1 , wherein the large scale particles ...

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Номер записи: 98
18-03-2021 дата публикации

WEAR-RESISTANT COATING

Номер: US20210078909A1
Автор: HUSSAIN Tanvir, Murray James
Принадлежит:

A method of coating an object, the method comprising: preparing a suspension comprising graphene nanoplatelets and a ceramic material; and spraying the suspension onto the object using high velocity oxy-fuel, HVOF, spraying in which the suspension is introduced as a feedstock. 1. A method of coating an object , the method comprising:preparing a suspension comprising graphene nanoplatelets and a ceramic material; andspraying the suspension onto the object using high velocity oxy-fuel, HVOF, spraying in which the suspension is introduced as a feedstock.2. The method of claim 1 , wherein the suspension comprises graphene nanoplatelets having a thickness in the range 4 nm to 25 nm.3. The method of claim 1 , wherein the suspension comprises graphene nanoplatelets having an average thickness in the range 5 nm to 10 nm claim 1 , or in the range 6 nm to 8 nm.4. The method of claim 1 , wherein the suspension comprises graphene nanoplatelets having an average diameter in the range 1 μm to 7 μm claim 1 , or in the range 4 μm to 6 μm.5. The method of claim 1 , wherein the ceramic material is or comprises alumina; and/or gamma-phase alumina.6. (canceled)7. The method of claim 5 , wherein after SHVOF spraying the ceramic material comprises at least 50 wt % or at least 70 wt % or at least 90 wt % gamma-phase alumina.8. The method of claim 1 , wherein the wt % of graphene nanoplatelets in the suspension is in the range 1% to 30% of the wt % of the ceramic material in the suspension.9. The method of claim 1 , wherein spraying the suspension using SHVOF spraying comprises injecting the suspension into a flame claim 1 , and wherein the ratio of flame power to injection flow rate of the suspension is between 0.5 and 1.5 kW(ml/min) claim 1 , or between 0.8 and 1.2 kW(ml/min)and/or ii) the flame has a flame power between 80 kW and 120 kW.10. (canceled)11. The method of any preceding claim claim 1 , wherein preparing the suspension comprises:preparing a first suspension comprising the ...

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Номер записи: 99
14-03-2019 дата публикации

SYSTEM, PROCESS AND RELATED SINTERED ARTICLE

Номер: US20190077674A1
Автор: Badding Michael Edward, Bouton William Joseph, Brackley Douglas Edward, Kester Lanrik Wayne, Ketcham Thomas Dale, Miller Eric Lee, Tanner Cameron Wayne, Zimmermann James William
Принадлежит:

A system, process and related sintered article are provided. The process includes supporting a piece of inorganic material with a pressurized gas and sintering the piece of inorganic material while supported by the pressurized gas by heating the piece of inorganic material to a temperature at or above a sintering temperature of the inorganic material such that the inorganic material is at least partially sintered forming the sintered article. The inorganic material is not in contact with a solid support during sintering. The sintered article, such as a ceramic article, is thin, has high surface quality, and/or has large surface areas. 1. A process of forming a sintered article , comprising:heating a green portion of a tape of polycrystalline ceramic and/or minerals in organic binder at a removal zone to a temperature sufficient to pyrolyze the organic binder, and thereby removing organic binder from the portion of tape;horizontally conveying the portion of tape with organic binder removed from the removal zone to a sintering zone, wherein the tape extending between the removal zone and the sintering zone is unsintered; andsintering polycrystalline ceramic and/or minerals of the portion of tape at the sintering zone by heating the polycrystalline ceramic and/or minerals to a temperature at or above a sintering temperature of the polycrystalline ceramic and/or minerals,wherein the tape simultaneously extends through the removal and sintering zones and comprises portions that contemporaneously include polycrystalline ceramic and/or minerals with organic binder, unsintered polycrystalline ceramic and/or minerals with organic binder removed, and at least partially sintered polycrystalline ceramic and/or minerals.2. The process of claim 1 , further comprising supporting the tape within the removal zone and the sintering zone with a gas bearing.3. The process of claim 1 , wherein the heating at the removal zone is to a temperature between 100 and 400 degrees Celsius claim ...

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Номер записи: 100