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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 7348. Отображено 100.
19-07-2012 дата публикации

Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus

Номер: US20120182357A1
Автор: Hiromu Miyazawa, Koichi Morozumi, Takayuki YONEMURA
Принадлежит: Seiko Epson Corp

A piezoelectric element comprises a piezoelectric layer consisting of a complex oxide having a perovskite structure containing bismuth and iron and electrodes provided to the piezoelectric layer. The complex oxide further contains a first dopant element that is at least one selected from the group consisting of sodium, potassium, calcium, strontium and barium, and a second dopant element that is cerium.

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Номер записи: 1
16-08-2012 дата публикации

Ceramic membrane having a catalytic membrane-material coating

Номер: US20120204716A1
Автор: Bernd Langanke, Bjoern Hoting, Steffen Schirrmeister
Принадлежит: Borsig Process Heat Exchanger Gmbh, THYSSENKRUPP UHDE GMBH

A porously coated, densely sintered ceramic membrane, which can be produced from a green membrane and subsequent sintering. The membrane is coated with ceramic material, which contains noble metals, which can be produced by application and subsequent thermal treatment. The noble metals are contained at a concentration of 2.5 to 5 mass percent.

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Номер записи: 2
25-10-2012 дата публикации

Semiconductor ceramic composition for ntc thermistors and ntc thermistor

Номер: US20120268234A1
Автор: Michiru Mikami
Принадлежит: Murata Manufacturing Co Ltd

Disclosed is a semiconductor ceramic composition for NTC thermistors, which has low dependency on firing temperatures, reduced variations in the resistance values after a resistance-adjusting operation, and reduced changes in resistance in high-temperature environments. The semiconductor ceramic composition contains Mn, Ni and Fe, wherein the molar ratios of Mn and Ni are in ranges of 70 to 80 mol % and 20 to 30 mol %, respectively, relative to the total content (100 mol %) of Mn and Ni, and the Fe content is in a range of 15 parts by mole to 25 parts by mole, both inclusive, relative to the total molar amount (100 parts by mole) of Mn and Ni. Preferably, Co is additionally present in an amount of 2 parts by mole to 40 parts by mole, both inclusive, relative to the total molar amount (100 parts by mole) of Mn and Ni.

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Номер записи: 3
22-11-2012 дата публикации

Carrier core particles for electrophotographic developer, method for manufacturing the same, carrier for electrophotographic developer and electrophotographic developer

Номер: US20120295195A1
Автор: Takeshi Kawauchi
Принадлежит: Dowa Electronics Materials Co Ltd, Dowa IP Creation Co Ltd

The carrier core particles 11 for electrophotographic developer contain lithium as a core composition. When the carrier core particles 11 are immersed in pure water at a weight ratio of 1 part core particles 11 to 10 parts pure water and shaken, the amount of lithium that leaches out to the pure water is 0.10 ppm or lower.

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Номер записи: 4
06-12-2012 дата публикации

High-temperature-resistant hybrid material made of calcium silicate and carbon

Номер: US20120308813A1
Автор: Axel Lengen, Hans-Juergen Schneider, Klaus Hoelscher, Tobias Hoelscher, Winfried Stellmach, Wolf Huettner
Принадлежит: CALISTHERM VERWALTUNGS GMBH

A temperature-resistant ceramic hybrid material has a matrix made of calcium silicate hydrate. Carbon is embedded in the matrix. The carbon is predominantly composed of graphite particles having an ordered graphitic lattice structure and the carbon makes up a weight fraction of up to 40%. The matrix is composed of tobermorite and/or xonotlite and can contain wollastonite rods and/or granular silicate. The size of the graphite particles is 0.01-3 mm. The hybrid material is especially suitable for casting devices for non-ferrous metals.

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Номер записи: 5
11-04-2013 дата публикации

INORGANIC FIBROUS MOLDED REFRACTORY ARTICLE, METHOD FOR PRODUCING INORGANIC FIBROUS MOLDED REFRACTORY ARTICLE, AND INORGANIC FIBROUS UNSHAPED REFRACTORY COMPOSITION

Номер: US20130090224A1
Автор: IWATA Koji, Yonaiyama Ken
Принадлежит: Nichias Corporation

An inorganic fibrous shaped refractory article having a high bio-solubility which is capable of exhibiting a desired heat resistance without containing expensive ceramic fibers, alumina powder and silica powder can be provided at a low production cost and with a low product price. 1. An inorganic fibrous shaped refractory article comprising materials comprising 2 to 95 mass % of rock wool , 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder.2. The inorganic fibrous shaped refractory article according to claim 1 , wherein the inorganic powder having a needle-like crystal structure has an average length of 1 to 3000 μm and an aspect ratio of 1 to 1000.3. The inorganic fibrous shaped refractory article according to or claim 1 , wherein the inorganic powder having a needle-like crystal structure is wollostonite powder or sepiolite powder.4. A method for producing an inorganic fibrous shaped refractory article claim 1 , wherein a slurry comprising materials comprising claim 1 , in terms of solid matters claim 1 , 2 to 95 mass % of rock wool claim 1 , 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder is subjected to dehydration shaping.5. An inorganic fibrous unshaped refractory composition comprising materials comprising claim 1 , in terms of solid matters claim 1 , 2 to 95 mass % of rock wool claim 1 , 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder. The invention relates to an inorganic fibrous shaped refractory article, a method for producing an inorganic fibrous molded refractory article, and an inorganic fibrous unshaped refractory composition.Conventionally, in an industrial furnace, a firing furnace, a heat-treatment apparatus or the like, as a lining material or a heat-insulating material for a ceiling, a wall or the like inside of a heating chamber, a relatively heavy refractory material such as ...

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Номер записи: 6
29-08-2013 дата публикации

INORGANIC FIBROUS MOLDED REFRACTORY ARTICLE, METHOD FOR PRODUCING INORGANIC FIBROUS MOLDED REFRACTORY ARTICLE, AND INORGANIC FIBROUS UNSHAPED REFRACTORY COMPOSITION

Номер: US20130225391A1
Автор: IWATA Koji, Yonaiyama Ken
Принадлежит: Nichias Corporation

To provide a highly bio-soluble fibrous shaped refractory article which can develop desired heat resistance without containing ceramic fibers such as aluminum silicate fibers, alumina powder and silica powder and can be provided at a low production cost and a low product cost. 1. An inorganic fibrous shaped refractory article comprising 2 to 95 mass % of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40° C. of 1 mass % or more , 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder.2. The inorganic fibrous shaped refractory article according to claim 1 , wherein the inorganic powder having a needle-like crystal structure has an average length of 1 to 3000 μm and an aspect ratio of 1 to 1000.3. A method for producing an inorganic fibrous shaped refractory article claim 1 , the method comprising subjecting a slurry comprising 2 to 95 mass % of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40° C. of 1 mass % or more claim 1 , 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder claim 1 , in terms of solid matters claim 1 , to dehydration shaping.4. An inorganic fibrous unshaped refractory composition comprising 2 to 95 mass % of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40° C. of 1 mass % or more claim 1 , 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder claim 1 , in terms of solid matters. The invention relates to an inorganic fibrous shaped refractory article, a method for producing an inorganic fibrous shaped refractory article and an inorganic fibrous unshaped refractory composition.Conventionally, in an industrial furnace, a firing furnace, a heat-treatment apparatus or the like, as a lining material or a heat-insulating material for a ceiling, a wall or the like inside of a heating chamber ...

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Номер записи: 7
27-02-2014 дата публикации

FERRITE PARTICLE AND PRODUCTION METHOD THEREOF

Номер: US20140054491A1
Автор: Kaneko Yuji, UTSUNO Seishi
Принадлежит: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO

A ferrite powder according to the present invention includes a laminar structure exhibiting a state where W-type ferrite phases are laminated in an easy direction of magnetization, the W-type ferrite phases including a compound expressed by AMFeO, where A, M, Fe, and O represent a first metal element (Sr, Ba, Ca, Pb, etc), a second metal element (Fe, Zn, Cu, Co, Mn, Ni, etc), iron, and oxygen, respectively. This ferrite particle is obtained through: a shape forming step that shapes a mixed powder in a magnetic field to obtain a compact, the mixed powder including for example an M-type ferrite particle including a compound expressed by AFeOand a spinel-type ferrite particle (S-type ferrite particle) including a compound expressed by MFeO; a calcination step that calcines the compact to obtain a calcined substance; and a milling step that mills the calcined substance. 1. A ferrite particle comprising a laminar structure exhibiting a state where W-type ferrite phases are laminated in an easy direction of magnetization , the W-type ferrite phases comprising a compound expressed by AMFeO , where A , M , Fe , and O represent a first metal element , a second metal element , iron , and oxygen , respectively.2. The ferrite particle as set forth in claim 1 , wherein the laminar structure is a fracture surface structure to be at least observed at a fracture surface.3. The ferrite particle as set forth in claim 1 , further comprising a WS mixed-phase structure which includes a spinel-type ferrite phase (referred to as “S-type ferrite phase” hereinafter) comprising a compound expressed by MFeOand in which the W-type ferrite phases and the S-type ferrite phase are mixed.4. The ferrite particle as set forth in claim 3 , wherein the WS mixed-phase structure is such that an S-type ferrite percentage is 6% or less claim 3 , wherein the S-type ferrite percentage is an existence fraction of the S-type ferrite phase claim 3 , which is determined by a peak intensity ratio calculated ...

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Номер записи: 8
13-03-2014 дата публикации

Ferrite magnet with salt and manufacturing method of the same

Номер: US20140070130A1
Автор: Gukhwan AN, Jinbae KIM, Jongyoul Kim, Namseok Kang, Sanggeun CHO, Yongho CHOA
Принадлежит: Industry University Cooperation Foundation IUCF HYU, LG ELECTRONICS INC

A ferrite magnet with salt includes 40 to 99.9 weight % of ferrite and 0.1 to 60 weight % of salt, wherein the salt has a melting point lower than a synthetic temperature of the ferrite, and the salt is melted to form a matrix between the ferrite particles, and a manufacturing thereof. The ferrite magnet with salt has advantages in terms of process conditions due to fast synthesis reaction at low temperatures compared to typical magnets, easily obtaining nano-sized particles having high crystallinity, preventing cohesion between particles and particle growth by molten salt, allowing sintering at temperatures lower than typical during the molding and sintering processes for producing a ferrite magnet with salt due to synthesized ferrite magnetic powder with salt thus preventing the deterioration of magnetic characteristics due to particle growth, and allowing alignment in the direction of magnetization easy axis to obtain higher magnetic characteristics.

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Номер записи: 9
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: 10
07-01-2016 дата публикации

JOINED BODY AND METHOD FOR PRODUCING THE SAME

Номер: US20160002110A1
Автор: IZUMI Yunie, Kawasaki Shinji, Kobayashi Yoshimasa, Morimoto Kenji
Принадлежит:

A joined body according to the present invention includes a first member made of a porous ceramic, a second member made of a metal, and a joint formed of an oxide ceramic of a transition metal, the joint joining the first member to the second member . Alternatively, a joined body may include a first member made of a dense material, a second member made of a dense material, and a joint formed of an oxide ceramic of a transition metal, the joint joining the first member to the second member. 1. A joined body , comprising:a first member;a second member; anda joint formed of an oxide ceramic containing at least one of transition metals, the joint joining the first member to the second member.2. The joined body according to claim 1 , wherein the oxide ceramic contains a second component in addition to a first component claim 1 , the first component being a main component and a transition metal claim 1 , the second component being at least one of Li claim 1 , Na claim 1 , K claim 1 , Ga claim 1 , Si claim 1 , Zr claim 1 , Ti claim 1 , Sn claim 1 , Nb claim 1 , Sb claim 1 , and Ta.3. The joined body according to claim 2 , wherein the oxide ceramic contains Fe as the first component and at least one of Si claim 2 , Zr claim 2 , Ti claim 2 , Sn claim 2 , Nb claim 2 , Sb claim 2 , and Ta as the second component.4. The joined body according to claim 2 , wherein the oxide ceramic contains at least one of Cu and Ni as the first component and at least one of Li claim 2 , Na claim 2 , and K as the second component.5. The joined body according to claim 1 , wherein the oxide ceramic has a porosity in the range of 5% to 70% by volume.6. The joined body according to claim 1 , wherein the thickness of a reaction layer formed at a joining interface between the oxide ceramic and at least one of the first member and the second member is 3 μm or less.7. The joined body according to claim 1 , wherein a difference between the thermal expansion coefficient of the first member and the thermal ...

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Номер записи: 11
02-01-2020 дата публикации

POROUS ACID-RESISTANT CERAMIC MEDIA

Номер: US20200002232A1
Автор: Reid John S
Принадлежит: SAINT-GOBAIN CERAMICS & PLASTICS, INC.

The present disclosure relates to a porous ceramic media that may include a chemical composition, a phase composition, a total open porosity content of at least about 10 vol. % and not greater than about 70 vol. % as a percentage of the total volume of the ceramic media, and a nitric acid resistance parameter of not greater than about 500 ppm. The chemical composition for the porous ceramic media may include SiO, AlO, an alkali component and a secondary metal oxide component selected from the group consisting of an Fe oxide, a Ti oxide, a Ca oxide, a Mg oxide and combinations thereof. The phase composition may include an amorphous silicate, quartz and mullite. 1. A porous ceramic media comprising:{'sub': 2', '2', '3, 'a chemical composition comprising SiO, AlO, an alkali component and a secondary metal oxide component selected from the group consisting of an Fe oxide, a Ti oxide, a Ca oxide, a Mg oxide and combinations thereof;'}a phase composition comprising amorphous silicate, quartz and mullite;a total open porosity content of at least about 10 vol. % and not greater than about 70 vol. % as a percentage of the total volume of the ceramic media, anda nitric acid resistance parameter of not greater than about 500 ppm.2. The porous ceramic media of claim 1 , wherein the chemical composition comprises:{'sub': '2', 'a content of SiOof at least about 65.0 wt. % and not greater than about 85.0 wt. % as a percentage of the total weight of the porous ceramic media;'}{'sub': 2', '3, 'a content of AlOof at least about 10 wt. % and not greater than about 30 wt. % as a percentage of the total weight of the porous ceramic media;'}a content of the alkali component of at least about 2 wt. % and not greater than about 8 wt. % as a percentage of the total weight of the porous ceramic media; anda content of the secondary metal oxide component of at least about 1 wt. % and not greater than about 5 wt. % as a percentage of the total weight of the porous ceramic media.3. The porous ...

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Номер записи: 12
05-01-2017 дата публикации

Method of manufacturing hexagonal ferrite powder, hexagonal ferrite powder, magnetic recording medium and method of manufacturing magnetic recording medium

Номер: US20170004912A1
Автор: Masashi Shirata
Принадлежит: Fujifilm Corp

The method of manufacturing hexagonal ferrite powder includes preparing a hexagonal ferrite precursor by mixing an iron salt and a divalent metal salt in a water-based solution, and converting the hexagonal ferrite precursor into hexagonal ferrite within a reaction flow passage, within which a fluid flowing therein is subjected to heating and pressurizing, by continuously feeding a water-based solution containing the hexagonal ferrite precursor and gelatin to the reaction flow passage.

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Номер записи: 13
05-01-2017 дата публикации

Semiconductor Composition Containing Iron, Dysprosium, and Terbium

Номер: US20170005170A1
Автор: Baddorf Arthur P., Duscher Gerd Josef Mansfred, Farah Annettee E., Kalyanaraman Ramakrishnan, Lawrie Benjamin J., Malasi Abhinav, Patel Maulik K., Pooser Raphael C., Taz Humaira
Принадлежит:

An amorphous semiconductor composition includes 1 to 70 atomic percent iron, 15 to 65 atomic percent dysprosium, 15 to 35 atomic percent terbium, balance X, wherein X is at least one of an oxidizing element and a reducing element. The composition has an essentially amorphous microstructure, an optical transmittance of at least 50% in at least the visible spectrum and semiconductor electrical properties. 1. An amorphous semiconductor composition comprising 1 to 70 atomic percent iron , 15 to 65 atomic percent dysprosium , 15 to 35 atomic percent terbium , balance X , wherein X is at least one element selected from the group consisting of an oxidizing element and a reducing element , said composition having an essentially amorphous microstructure , an optical transmittance of at least 50% in at least the visible spectrum and semiconductor electrical properties.2. An amorphous semiconductor composition in accordance with wherein said semiconductor composition comprises 10 to 60 atomic percent iron.3. An amorphous semiconductor composition in accordance with wherein said semiconductor composition comprises 10 to 50 atomic percent iron.4. An amorphous semiconductor composition in accordance with wherein said semiconductor composition comprises 25 to 55 atomic percent dysprosium.5. An amorphous semiconductor composition in accordance with wherein said semiconductor composition comprises 20 to 30 atomic percent terbium.6. An amorphous semiconductor composition in accordance with wherein said oxidizing element is oxygen.7. An amorphous semiconductor composition in accordance with wherein said reducing element is at least one element selected from the group consisting of sulfur claim 1 , hydrogen claim 1 , and nitrogen.8. An amorphous semiconductor composition in accordance with wherein said optical transmittance is at least 70% in the visible spectrum.9. An amorphous semiconductor composition in accordance with wherein said semiconductor composition is characterized by room ...

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Номер записи: 14
03-01-2019 дата публикации

INCREASED RESONANT FREQUENCY ALKALI-DOPED Y-PHASE HEXAGONAL FERRITES

Номер: US20190006067A1
Автор: Hill Michael David
Принадлежит:

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material, such as Y-phase hexagonal ferrite material, and methods of manufacturing. In some embodiments, sodium or potassium can be added into the crystal structure of the hexagonal ferrite material in order to achieve improved resonant frequencies in the range of 500 MHz to 1 GHz useful for radiofrequency applications. 1. (canceled)2. A method for increasing the resonant frequency of a hexagonal ferrite material , the method comprising:providing a Y phase hexagonal ferrite material having a strontium site and a crystal structure of an intergrowth between a magnetoplumbite and a spinel crystal structure;doping the Y phase hexagonal ferrite material with sodium, potassium, or other univalent alkali metal on the strontium site; anddoping the Y phase hexagonal ferrite material with scandium or indium for charge compensating with the sodium, potassium, or other univalent alkali metal to form a doped Y phase hexagonal ferrite material.3. The method of claim 2 , wherein the Y phase hexagonal ferrite material includes Sr claim 2 , a metal claim 2 , Fe claim 2 , and O.4. The method of claim 3 , wherein the metal is Co.5. The method of claim 3 , wherein aluminum is added into the crystal structure of the Y phase hexagonal ferrite material to replace the Fe.6. The method of claim 5 , wherein the doped Y phase hexagonal ferrite material has a composition SrCoFeAlOor Sr(K claim 5 ,Na)CoMFeAlO claim 5 , M being the scandium or the indium.7. The method of claim 6 , wherein the doped Y phase hexagonal ferrite material has the composition SrNaCoScFeAlOor SrNaCoScFeAlO.8. The method of claim 2 , wherein the indium or the scandium are located on a cobalt site of the Y phase hexagonal ferrite material.9. The method of claim 2 , further including adding silica into the crystal structure of the Y phase hexagonal ferrite material.10. The method of claim 2 , further including adding silicon into the ...

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Номер записи: 15
12-01-2017 дата публикации

Catalytic extruded, solid honeycomb body

Номер: US20170007991A1
Автор: Joerg Walter Jodlauk, Joerg Werner Muench, Juergen Bauer, Rainer Leppelt, Ralf Dotzel
Принадлежит: JOHNSON MATTHEY PLC

An extruded, solid honeycomb body comprises a copper-promoted, small pore, crystalline molecular sieve catalyst for converting oxides of nitrogen in the presence of a reducing agent, wherein the crystalline molecular sieve contains a maximum ring size of eight tetrahedral atoms, which extruded, solid honeycomb body comprising: 20-50% by weight matrix component comprising diatomaceous earth, wherein 2-20 weight % of the extruded, solid honeycomb body is diatomaceous earth; 80-50% by weight of the small pore, crystalline molecular sieve ion-exchanged with copper; and 0-10% by weight of inorganic fibres.

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Номер записи: 16
14-01-2021 дата публикации

BAKING SLURRY COMPOSITION, GREEN SHEET, METHOD FOR MANUFACTURING GREEN SHEET, METHOD FOR MANUFACTURING SINTERED PRODUCT, AND METHOD FOR MANUFACTURING MONOLITHIC CERAMIC CAPACITOR

Номер: US20210009476A1
Автор: KAWAI Yutaka
Принадлежит:

A baking slurry composition of the present invention contains an amino alcohol compound represented by formula, inorganic powder , a polyvinyl alcohol resin, and water. In the formula, 2. The baking slurry composition of claim 1 , wherein a component (C3) having a saponification degree of more than or equal to 85 mol % and less than or equal to 99 mol %, and', 'a component (C4) having a saponification degree of more than or equal to 60 mol % and less than 85 mol %., 'the polyvinyl alcohol resin (C) contains'}3. The baking slurry composition of claim 1 , whereinthe polyvinyl alcohol resin (C) contains a nonionic polyvinyl alcohol resin (C1) and an anionic polyvinyl alcohol resin (C2).4. The baking slurry composition of claim 3 , whereinthe anionic polyvinyl alcohol resin (C2) contains a polyvinyl alcohol resin (C21) having a carboxyl group.5. The baking slurry composition of claim 4 , wherein a nonionic polyvinyl alcohol resin (C11) having a saponification degree of more than or equal to 85 mol % and less than or equal to 99 mol %, and', 'a nonionic polyvinyl alcohol resin (C12) having a saponification degree of more than or equal to 60 mol % and less than 85 mol %., 'the nonionic polyvinyl alcohol resin (C1) contains'}6. The baking slurry composition of claim 5 , whereinthe nonionic polyvinyl alcohol resin (C1) contains a nonionic polyvinyl alcohol resin (C11) having a saponification degree of more than or equal to 85 mol % and less than or equal to 99 mol %, andthe polyvinyl alcohol resin (C21) contains an anionic polyvinyl alcohol resin (C211) having a saponification degree of more than or equal to 60 mol % and less than 85 mol % and a carboxyl group.9. The green sheet of claim 8 , whereinthe green sheet is adopted to produce a ceramic capacitor comprising a sintered product of the inorganic powder (B), the sintered product being obtained by baking the green sheet.11. A method for manufacturing a sintered product claim 8 , the method comprising baking the green ...

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Номер записи: 17
14-01-2021 дата публикации

Baking slurry composition, green sheet, method for manufacturing green sheet, method for manufacturing sintered product, and method for manufacturing monolithic ceramic capacitor

Номер: US20210009477A1
Автор: Yutaka Kawai
Принадлежит: Goo Chemical Industries Co Ltd

A baking slurry composition for producing a green sheet of the present invention contains inorganic powder, a polyvinyl alcohol resin, acrylic polymer, and water. The acrylic polymer has a glass transition temperature higher than or equal to −50° C. and lower than or equal to 30° C. and an acid value greater than or equal to 50 mg KOH/g and less than or equal to 200 mg KOH/g. The acrylic polymer has a weight percentage of more than or equal to 0.1 and less than or equal to 5.0 relative to a total solid content of the baking slurry composition.

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Номер записи: 18
10-01-2019 дата публикации

MAGNETO-DIELECTRIC MATERIAL COMPRISING HEXAFERRITE FIBERS, METHODS OF MAKING, AND USES THEREOF

Номер: US20190013128A1
Автор: CHEN Yajie, SETHUMADHAVAN Murali, Sprentall Karl Edward
Принадлежит: Rogers Corporation

In an embodiment, a magneto-dielectric material comprises a polymer matrix; a plurality of hexaferrite microfibers; wherein the magneto-dielectric material has a permeability of 2.5 to 7, or 2.5 to 5 in an x-direction parallel to a broad surface of the magneto-dielectric material and a magnetic loss tangent of less than or equal to 0.03; as determined at 1 GHz, or 1 to 2 GHz. 1. A magneto-dielectric material comprising:a polymer matrix; anda plurality of hexaferrite microfibers; a permeability of 2.5 to 7 in an x-direction parallel to a broad surface of the magneto-dielectric material, and', 'a magnetic loss tangent of less than or equal to 0.03; as determined at 1 GHz., 'wherein the magneto-dielectric material has'}2. The magneto-dielectric material of claim 1 , wherein the magneto-dielectric material comprises 10 to 60 vol % of the plurality of hexaferrite microfibers based on the total volume of the magneto-dielectric material.3. The magneto-dielectric material of claim 1 , wherein the plurality of hexaferrite microfibers comprises a Z-type hexaferrite claim 1 , a W-type hexaferrite claim 1 , a U-type hexaferrite claim 1 , an X-type hexaferrite claim 1 , a Y-type hexaferrite claim 1 , or a combination comprising at least one of the foregoing; or wherein the plurality of hexaferrite microfibers comprises a Z-type hexaferrite.4. (canceled)6. The magneto-dielectric material of claim 1 , wherein the plurality hexaferrite microfibers have an aspect ratio of greater than or equal to 10.7. The magneto-dielectric material of claim 1 , wherein the plurality of hexaferrite microfibers have one or both ofan average diameter of 0.3 to 10 micrometers oran average length of 100 to 5,000 micrometers.8. The magneto-dielectric material of claim 1 , wherein the plurality of hexaferrite microfibers comprise a plurality of grains having a grain size of 0.3 to 20 micrometers; wherein 50 to 100% by number of the grains are oriented along an x-y plane of the respective microfiber.9. ( ...

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Номер записи: 19
03-02-2022 дата публикации

BROWNMILLERITE-BASED POLYCRYSTALLINE FUSED PRODUCT

Номер: US20220033310A1
Автор: KAPER Helena, REPECAUD Pierre-Alexis
Принадлежит:

A polycrystalline fused product based on brownmillerite, includes, for more than 95% of its weight, of the elements Ca, Sr, Fe, O, M and M′, the contents of the elements being defined by the formula XMFeM′O, wherein the atomic indices are such that 0.76≤y≤1.10, z≤0.21, 0.48≤t≤1.15 and u≤0.52, 0.95≤y+z≤1.10, and 0.95≤t+u≤1.10, X being Ca or Sr or a mixture of Ca and Sr, M being an element chosen from the group formed by La, Ba and mixtures thereof, M′ being an element chosen from the group formed by Ti, Cu, Gd, Mn, Al, Sc, Ga, Mg, Ni, Zn, Pr, In, Co, and mixtures thereof, the sum of the atomic indices of Ti and Cu being less than or equal to 0.1. 1. A polycrystalline fused product based on brownmillerite , consisting , for more than 95% of its weight , of the elements Ca , Sr , Fe , O , M and M′ , the contents of said elements being defined by the formula XMFeM′O , wherein the atomic indices are such that 0.76≤y≤1.10 , z≤0.21 , 0.48≤t≤1.10 and u≤0.52 , 0.95≤y+z≤1.10 , and 0.95≤t+u≤1.10 , X being Ca or Sr or a mixture of Ca and Sr , M being an element chosen from the group formed by La , Ba and mixtures thereof , M′ being an element chosen from the group formed by Ti , Cu , Gd , Mn , Al , Sc , Ga , Mg , Ni , Zn , Pr , In , Co , and mixtures thereof , the sum of the atomic indices of Ti and Cu being less than or equal to 0.1.2. The fused product as claimed in claim 1 , wherein 0.85≤y≤1.05 and/or z≤0.15 and/or 0.75≤t≤1.05 and/or u≤0.25.3. The fused product as claimed in claim 1 , wherein the content of brownmillerite phase is greater than 50%.4. The fused product as claimed in claim 1 , wherein z=0.5. The fused product as claimed in claim 1 , wherein u=0.6. The fused product as claimed in claim 1 , wherein z=0 and u=0.7. The fused product as claimed in claim 1 , wherein the element M′ is chosen from Ti claim 1 , Cu claim 1 , Ni claim 1 , Co claim 1 , Mn and mixtures thereof.8. The fused product as claimed in claim 1 , of formulation XMFeM′O claim 1 , wherein claim 1 , ...

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Номер записи: 20
14-01-2016 дата публикации

Insulating ceramic paste, ceramic electronic componet, and method for producing the same

Номер: US20160014892A1
Автор: Sumiyo Nakamura, Takahiro Oka, Takahiro Sumi
Принадлежит: Murata Manufacturing Co Ltd

Provided are an insulating ceramic paste, a ceramic electronic component, and a method for producing the ceramic electronic component that allow prevention of solder shorts between narrow-pitch terminal electrodes and suppression of generation of cracks in an insulator covering a portion of terminal electrodes during a firing step. The ceramic electronic component includes a ceramic multilayer substrate, terminal electrodes formed on a surface of the ceramic multilayer substrate, and an insulating ceramic film formed on the surface of the ceramic multilayer substrate so as to cover a portion of the terminal electrodes. An exposed surface portion (celsian-crystal-rich layer) of the insulating ceramic film has a thermal expansion coefficient that is lower than the thermal expansion coefficient of the ceramic multilayer substrate.

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Номер записи: 21
15-01-2015 дата публикации

SINTERED COBALT FERRITES COMPOSITE MATERIAL WITH HIGH MAGNETOSTRICTION

Номер: US20150017443A1
Автор: Khaja Mohaideen Kamal, Pattayil Alias Joy
Принадлежит:

Disclosed herein is a sintered cobalt ferrite composite material comprising of nano and micron sized powders of cobalt ferrite with high magnetostriction. The present invention further discloses preparation of nano and micron sized powders of cobalt ferrite, in particular, the auto combustion process using glycine as fuel for preparing nano sized cobalt ferrite powders. 1. Sintered cobalt ferrite composite material comprising of nano and/or micron sized powders of cobalt ferrite , wherein the ratio of nano sized powder of cobalt ferrite to the micron sized powder of cobalt ferrite in said composite is in the ratio ranging between 70:30 to 95:5 wherein said composite material having a density in the range of 79-81% compared to theoretical density and magnetostriction in the range of 340-396 ppm.2. Sintered cobalt ferrite composite material according to claim 1 , wherein the grain size of the composite is in the range of 1 to 10 μm.3. Sintered cobalt ferrite composite material according to claim 1 , wherein particle size of micron sized powder of cobalt ferrite is in the range of 1 to 10 μm.4. Sintered cobalt ferrite composite material according to claim 1 , wherein particle size of the nano sized powder of cobalt ferrite powder is in the range 3 to 40 nm.5. The process for preparation of sintered cobalt ferrite composite material as claimed in claim 1 , wherein said process comprising the steps of:{'sub': 3', '2', '2', '3', '3', '2, 'a. dissolving cobalt nitrate (Co(NO).6HO) and Ferric nitrate (Fe(NO).9HO) in the molar ratio ranging between 1:1.5 to 1:2 in minimum amount of distilled water;'}b. adding glycine solution in minimum amount of water with solution of step (a) wherein the metal ion to glycine is in the molar ratio of 1:0.125 to 1:1.25 followed by mixing to obtain a uniform solution;c. evaporating the solution of step (c) on a hot plate at temperature in the range of 180 to 220° C. to obtain the thick mass which is burnt spontaneously to obtain nano sized ...

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Номер записи: 22
18-01-2018 дата публикации

MO-DOPED COZZ-TYPE FERRITE COMPOSITE MATERIAL FOR USE ULTRA-HIGH FREQUENCY

Номер: US20180016157A1
Автор: CHEN Yajie, HARRIS Vincent
Принадлежит:

A CoZ hexaferrite composition is provided containing molybdenum and one or both of barium and strontium, having the formula (BaSrCo)MoFeOwhere x=0.01 to 0.20; y=20 to 24; and z=0 to 3. The composition can exhibit high permeabilities and equal or substantially equal values of permeability and permittivity while retaining low magnetic and dielectric loss tangents and loss factors. The composition is suitable for high frequency applications such as ultrahigh frequency and microwave antennas and other devices. 2. The hexaferrite composition of claim 1 , wherein x=0.08 to 0.15.3. The hexaferrite composition of claim 1 , wherein x=0.10 to 0.12.4. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permeability at least 3.0 over a frequency range of 0.1 to 3.0 GHz.5. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permeability at least 7.0 over a frequency range of 0.1 to 3.0 GHz.6. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permeability ranging from 7.0 to 12.0 over a frequency range of 0.1 to 3.0 GHz.7. The hexaferrite composition of claim 1 , wherein z=1.2 to 3.0 claim 1 , and the hexaferrite composition has a real permeability ranging from 8.0 to 12.0 over a frequency range of about 0.1 GHz to at least 1.0 GHz.8. The hexaferrite composition of claim 1 , wherein z=0 to 0.5 claim 1 , and the hexaferrite composition has a real permeability ranging from 2.0 to 4.0 over a frequency range of about 0.1 GHz to about 3.0 GHz.9. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permittivity at least 6.0 over a frequency range of 0.1 to 3.0 GHz.10. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permittivity at least 8.0 over a frequency range of 0.1 to 3.0 GHz.11. The hexaferrite composition of claim 1 , wherein the hexaferrite composition has a real permittivity ranging from 6.0 to ...

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Номер записи: 23
18-01-2018 дата публикации

CBS-BASED LTCC MATERIAL AND PREPARATION METHOD THEREOF

Номер: US20180016192A1
Автор: Liu Jian, NIE Min
Принадлежит:

Disclosed is a CBS-based low-temperature co-fired ceramic (LTCC) material, and a preparation method thereof. The material has, as a main component, a sintered phase of low dielectric constant of CaSiOand CaBO, and comprises CBS and a dopant. The CBS comprises, by weight, 30-40% of CaO, 15-30% of BO, and 40-50% of SiO, and the dopant comprises 0-2% of PO, 0-2% of nanometer CuO, and 0.5-2% of nanometer VO. The preparation method comprises mixing oxides including a CBS-based dielectric ceramic as a base and one or two of POand CuO as an initial dopant, and then adding VOas a final sintering aid, to prepare the material. In the present invention, a CBS-based LTCC material that is obtained by sintering at a low temperature and has the advantages of low dielectric constant, low loss, and good overall performance is provided. 1. A CBS-based low-temperature co-fired ceramic material having , as a main component , a sintered phase of low dielectric constant of CaSiOand CaBOcomprising CBS and a dopant , wherein the CBS comprises , by weight , 30-40% of CaO , 15-30% of BO , and 40-50% of SiO , and the dopant comprises 0-2% of PO , 0-2% of nanometer CuO , and 0.5-2% of nanometer VO.2. A method for preparing a CBS-based LTCC material , comprising: mixing a CBS-based dielectric ceramic as a base with one or two of POand CuO as an initial dopant , and then adding VOas a final sintering aid , to prepare the material , wherein the material has , as a main component , a sintered phase of low dielectric constant of CaSiOand CaBOcomprising CBS and a dopant , wherein the CBS comprises , by weight , 30-40% of CaO , 15-30% of BO , and 40-50% of SiO , and the dopant comprises 0-2% of PO , 0-2% of nanometer CuO , and 0.5-2% of nanometer VO.3. The preparation method according to claim 2 , comprising the steps of(1) material mixing{'sub': 3', '3', '3', '2', '2', '3', '2', '2', '5, 'weighing the raw materials CaCO, HBO, and SiObased on 30-40% of CaO, 15-30% of BO, and 40-50% of SiO, and doping ...

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Номер записи: 24
18-01-2018 дата публикации

CERAMIC HONEYCOMB STRUCTURE AND ITS PRODUCTION METHOD

Номер: US20180016955A1
Автор: Okazaki Shunji
Принадлежит: HITACHI METALS, LTD.

A ceramic honeycomb structure having pluralities of flow paths partitioned by porous cell walls; (a) the cell walls having porosity of 50-60%; and (b) in a pore diameter distribution in the cell walls measured by mercury porosimetry, (i) pore diameters at cumulative pore volumes corresponding to particular percentages of the total pore volume being within specific ranges and having specific relationships; and (ii) the difference between a logarithm of the pore diameter at a cumulative pore volume corresponding to 20% of the total pore volume and a logarithm of the pore diameter at 80% being 0.39 or less, and its production method. 1. A method for producing a ceramic honeycomb structure comprising the steps of extrusion-molding a moldable material comprising a ceramic material and hollow resin particles as a pore-forming material to a predetermined green body , and drying and sintering said green body;said moldable material comprising 3-9% by mass of said pore-forming material per 100% by mass of said ceramic material;said pore-forming material having a median particle diameter D50 of 20-53 μm, a particle diameter D5 at a cumulative volume corresponding to 5% of the total volume being 12-27 μm, a particle diameter D10 at a cumulative volume corresponding to 10% of the total volume being 15-30 μm, a particle diameter D90 at a cumulative volume corresponding to 90% of the total volume being 50-75 μm, a particle diameter D95 at a cumulative volume corresponding to 95% of the total volume being 60-90 μm, and D50/(D90-D10) being 0.85-1.30, in a curve of a cumulative volume to a particle diameter;said ceramic material comprising 15-25% by mass of silica, 40-43% by mass of talc, and 15-30% by mass of alumina, per 100% by mass of said ceramic material;said silica having a median particle diameter D50 of 15-30 μm, D10 of 10-20 μm, and D90 of 40-60 μm, the percentage of particles having diameters of 5μm or less being 1% or less by mass, the percentage of particles having ...

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Номер записи: 25
17-01-2019 дата публикации

MAGNETODIELECTRIC Y-PHASE STRONTIUM HEXAGONAL FERRITE MATERIALS FORMED BY SODIUM SUBSTITUTION

Номер: US20190019605A1
Автор: Hill Michael David
Принадлежит:

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase strontium hexagonal ferrite material. In some embodiments, sodium can be added into the crystal structure of the hexagonal ferrite material in order to achieve high resonance frequencies while maintaining high permeability. 1. (canceled)2. A modified sodium substituted strontium hexagonal ferrite comprising:a Y-phase strontium hexagonal ferrite crystal structure including elements strontium, sodium, cobalt, iron, oxygen and one of a tetravalent ion and a trivalent ion, the at least one of the tetravalent ion and the trivalent ion configured to charge balance for the sodium substituting at least partially for the strontium in the crystal structure; anda permeability of between 5 and 6.3. The modified sodium substituted strontium hexagonal ferrite of wherein the crystal structure contains the trivalent ion.4. The modified sodium substituted strontium hexagonal ferrite of wherein greater than zero and less than or equal to 1.5 of the trivalent ion is included in the crystal structure.5. The modified sodium substituted strontium hexagonal ferrite of wherein the trivalent ion is selected from the group consisting of Al claim 3 , Ga claim 3 , Sc claim 3 , Cr claim 3 , Mn claim 3 , In claim 3 , Yb claim 3 , Er claim 3 , Y and lanthanide elements.6. The modified sodium substituted strontium hexagonal ferrite of wherein the trivalent ion is scandium.7. The modified sodium substituted strontium hexagonal ferrite of wherein the crystal structure contains the tetravalent ion.8. The modified sodium substituted strontium hexagonal ferrite of wherein greater than zero and less than or equal to 0.75 of the tetravalent ion is included in the crystal structure.9. The modified sodium substituted strontium hexagonal ferrite of wherein the tetravalent ion is selected from the group consisting of Si claim 7 , Ge claim 7 ...

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Номер записи: 26
17-04-2014 дата публикации

Sodium niobate powder, method of manufacturing a sodium niobate powder, plate-like particle, method of manufacturing a plate-like particle, and method of manufacturing an oriented ceramics

Номер: US20140106170A1
Автор: Hiroshi Saito, Jumpei Hayashi, Nobuhiro Kumada, Takayuki Watanabe
Принадлежит: Canon Inc, University of Yamanashi NUC

Provided are methods of manufacturing an oriented ceramics containing sodium niobate and a raw material thereof. Specifically, provided is a sodium niobate powder, including cuboidal sodium niobate particles having an average side length of 0.1 μm or more to 100 μm or less, at least one face of the cuboid including a (100) plane in pseudo-cubic notation, in which the sodium niobate powder has a perovskite single-phase structure.

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Номер записи: 27
28-01-2021 дата публикации

Negative thermal expansion material and production method thereof

Номер: US20210024360A1
Автор: Kei Muneyasu, Makoto Mikami, Yoshiki Yamazaki
Принадлежит: JX Nippon Mining and Metals Corp

A negative thermal expansion material, being formed from MxSryBazZn2Si2O7 (wherein M is one or more types of Na and Ca, and x+y+z=1, 0<x≤0.5, 0.3<z<1.0), and an XRD peak intensity INTR and a background intensity IBG of a primary phase of an orthorhombic crystal structure which exhibits negative expansion characteristics satisfy a relation of INTE/IBG>15. An object of the present invention is to provide a negative thermal expansion material having a low specific gravity, and a negative thermal expansion material having a low Ba content.

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Номер записи: 28
28-01-2021 дата публикации

COMPOSITION FOR FDM 3D PRINTER, METHOD OF MANUFACTURING THE SAME, AND MOLDED ARTICLE

Номер: US20210024420A1
Автор: Kim Yong Bok, Lim Jun Young, Ryu Hyun Seung
Принадлежит:

A composition for a FDM 3D printer is disclosed. The composition contains bioglass and a biocompatible polymer resin. In addition, a FDM 3D printer molded article having a laminated strut structure, in which the composition for the FDM 3D printer is injected into four layers, is disclosed. 1. A composition for a fused deposition modeling (FDM) 3D printer comprising bioglass and a biocompatible polymer resin.2. The composition for the FDM 3D printer according to claim 1 , wherein the bioglass comprises one selected from the group consisting of CaO claim 1 , SiO claim 1 , PO claim 1 , BO claim 1 , and a combination thereof.3. The composition for the FDM 3D printer according to claim 1 , wherein the bioglass is crystallized through sintering.4. The composition for the FDM 3D printer according to claim 1 , wherein the biocompatible polymer resin comprises one selected from the group consisting of poly(ε-caprolactone) (PCL) claim 1 , polyethylene (PE) claim 1 , poly(methyl methacrylate) (PMMA) claim 1 , poly lactic acid (PLA) claim 1 , poly-L-lactic acid (PLLA) claim 1 , polyglycolide (PGA) claim 1 , poly lactic-co-glycolic acid (PLGA) claim 1 , polyvinyl chloride (PVC) claim 1 , polytetrafluoroethylene (PTFE) claim 1 , polyethylene terephthalate (PET) claim 1 , polyurethane claim 1 , polyacetal claim 1 , polyamide claim 1 , polyamide elastomer claim 1 , polyester claim 1 , polyester elastomer claim 1 , polypropylene claim 1 , polyacrylonitrile claim 1 , polysulfone claim 1 , polyorthoester claim 1 , polyanhydride claim 1 , chitosan claim 1 , gelatin claim 1 , collagen claim 1 , and a combination thereof.5. The composition for the FDM 3D printer according to claim 1 , wherein the composition for the FDM 3D printer includes 10 to 70% by weight of bioglass and 30 to 90% by weight of biocompatible polymer resin based on the total weight of the composition.6. The composition for the FDM 3D printer according to claim 1 , wherein the composition for the FDM 3D printer includes ...

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Номер записи: 29
29-01-2015 дата публикации

Ni-zn-cu-based ferrite particles, green sheet comprising the ni-zn-cu-based ferrite particles and ni-zn-cu-based ferrite sintered ceramics

Номер: US20150028251A1
Автор: Takanori Doi, Tomohiro Dote, Yoji Okano
Принадлежит: Toda Kogyo Corp

An object of the present invention is to provide a ferrite material that is excellent in temperature characteristic and DC superimposition characteristic. The present invention relates to Ni—Zn—Cu-based ferrite particles comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite having a specific composition, 1 to 20% by weight of nickel oxide, 0 to 20% by weight of zinc oxide and 1 to 10% by weight of copper oxide, and a ferrite sintered ceramics obtained by sintering the ferrite particles.

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Номер записи: 30
29-01-2015 дата публикации

Composite Laminated Ceramic Electronic Component

Номер: US20150030830A1
Автор: Hiroshige ADACHI, Kazuhiro Kaneko, Sadaaki Sakamoto, Satoru Adachi, Seiji Fujita
Принадлежит: Murata Manufacturing Co Ltd

A composite laminated ceramic electronic component that includes co-fired low dielectric-constant ceramic layers and high dielectric-constant ceramic layers. The low dielectric-constant ceramic layers and the high dielectric-constant ceramic layers are each composed of a glass ceramic containing: a first ceramic composed of MgAl 2 O 4 and/or Mg 2 SiO 4 ; a second ceramic composed of BaO, RE 2 O 3 (where RE is a rare-earth element), and TiO 2 ; glass containing each of 44.0 to 69.0 weight % of RO (where R is an alkaline-earth metal), 14.2 to 30.0 weight % of SiO 2 , 10.0 to 20.0 weight % of B 2 O 3 , 0.5 to 4.0 weight % of Al 2 O 3 , 0.3 to 7.5 weight % of Li 2 O, and 0.1 to 5.5 weight % of MgO; and MnO. The content ratios of the glass, etc. are varied between the low dielectric-constant ceramic layers and the high dielectric-constant ceramic layers.

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Номер записи: 31
29-01-2015 дата публикации

Interconnector material, intercellular separation structure, and solid electrolyte fuel cell

Номер: US20150030958A1
Автор: Kazuhide Takata, Michiaki Iha
Принадлежит: Murata Manufacturing Co Ltd

Provided is an interconnector material which is chemically stable in both oxidation atmospheres and reduction atmospheres, has a high electron conductivity (electric conductivity), a low ionic conductivity, does not contain Cr, and enables a reduction in sintering temperature. The interconnector material is arranged between a plurality of cells each composed of an anode layer, a solid electrolyte layer, and a cathode layer stacked sequentially, and electrically connects the plurality of cells to each other in series in a solid electrolyte fuel cell. The interconnector is formed of a ceramic composition represented by the composition formula La(Fe 1-x Al x )O 3 in which 0<x<0.5.

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Номер записи: 32
17-02-2022 дата публикации

Thermal Insulation

Номер: US20220048827A1
Автор: Farid Modarresifar
Принадлежит: Thermal Ceramics UK Ltd

The present invention relates to inorganic fibres having a composition comprising: 65.7 to 70.8 wt % SiO 2 ; 27.0 to 34.2 wt % CaO; 0.10 to 2.0 wt % MgO; and optional other components providing the balance up to 100 wt %, wherein the sum of SiO 2 and CaO is greater than or equal to 97.8 wt %; and the other components, when present, comprise no more than 0.80 wt % Al 2 O 3 ; and wherein the amount of MgO and other components are configured to inhibit the formation of surface crystallite grains upon heat treatment at 1100° C. for 24 hours, wherein said surface crystallite grains comprise an average crystallite size in a range of from 0.0 to 0.90 μm.

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Номер записи: 33
31-01-2019 дата публикации

Ceramic proppant and method for producing same

Номер: US20190031568A1
Автор: Aleksey Vladimirovich BALASHOV, Pavel Gennadievich RUSINOV
Принадлежит: &lt;&gt; LLC

The invention relates to a method for producing a ceramic proppant, including a step for preparing an original charge material, involving the grinding of source materials, particularly magnesium-containing materials, and auxiliary materials, thus producing a charge material, granulating the charge material so as to produce granules of a proppant precursor, and firing the granules of proppant precursor, thus producing proppant granules, wherein the method includes a step for pre-firing the magnesium-containing material in a reducing atmosphere. The invention also relates to a ceramic proppant produced via the indicated method.

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Номер записи: 34
12-02-2015 дата публикации

Ferrite particles for bonded magnets, resin composition for bonded magnets, and molded product using the same

Номер: US20150041702A1
Автор: Hiromitsu Sakurai, Norihiro Fukushina, Yasuhiko Fujii, Yasushi Nishio
Принадлежит: Toda Kogyo Corp

The present invention relates to ferrite particles for bonded magnets having a bulk density of not more than 0.75 g/cm 3 and a degree of compaction of not less than 65%, a resin composition for bonded magnets using the ferrite particles and the composition, and a rotor. The ferrite particles for bonded magnets and the resin composition for bonded magnets according to the present invention are capable of providing a bonded magnet molded product having a good tensile elongation and an excellent magnetic properties.

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Номер записи: 35
18-02-2021 дата публикации

METHOD OF MAKING A REFRACTORY ARTICLE

Номер: US20210047240A1
Автор: GOUIN MARCEL, SIMARD ALAIN, VEILLETTE FRANÇOIS
Принадлежит:

A method of making a refractory article is provided. The method includes: a) mixing a binder system, a refractory charge, and a second colloidal binder to form an aqueous slurry; b) casting the aqueous slurry into a mold; c) subjecting the mold containing the aqueous slurry to a temperature that is lower than a slurry casting temperature for a time sufficient to form a green strength article; and d) firing the green strength article at a temperature of at least 450° C. for a time sufficient to achieve thermal homogeneity, thereby forming a refractory article. Refractory articles made in accordance with the method have a unique combination of pore structure and mechanical properties. 1. A method of making a refractory article , the method comprising:a) mixing a binder system, a refractory charge, and a second colloidal binder to form an aqueous slurry;b) casting the aqueous slurry into a mold, wherein the aqueous slurry is at a slurry casting temperature;c) subjecting the mold containing the aqueous slurry to a temperature that is less than the slurry casting temperature for a time sufficient to form a green strength article; andd) firing the green strength article at a temperature of at least 450° C. for a time sufficient to achieve thermal homogeneity, thereby forming a refractory article.2. The method of claim 1 , further comprising placing a reinforcement material into or on the mold.3. The method of claim 1 , wherein the mold containing the aqueous slurry is subjected to a temperature of −195° C. to 0° C.4. The method of claim 1 , wherein the mold containing the aqueous slurry is subjected to a temperature of −100° C. to -30° C.5. The method of claim 1 , further comprising demolding the green strength article.6. The method of claim 1 , wherein the green strength article is not subjected to a drying step prior to the firing step.7. The method of claim 1 , further comprising forming the binder system claim 1 , wherein forming the binder system comprises:preparing ...

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Номер записи: 36
06-02-2020 дата публикации

CATHODE MATERIAL AND FUEL CELL

Номер: US20200044260A9
Автор: KOBAYASHI Ayano, Ohmori Makoto
Принадлежит:

A cathode material used in an anode and a cathode contains (Co,Fe)Oand a perovskite type oxide that is expressed by the general formula ABOand includes at least one of La and Sr at the A site. A content ratio of (Co,Fe)Oin the cathode material is at least 0.23 wt % and no more than 8.6 wt %. 1. A cathode material containing (Co ,Fe)Oand a perovskite type oxide , the perovskite type oxide being expressed by the general formula ABOand including at least one of La and Sr at the A site , wherein{'sub': 3', '4, 'a content ratio of (Co,Fe)Ois at least 0.23 wt % and no more than 8.6 wt %.'}2. The cathode material according to claim 1 , wherein the perovskite type oxide is LSCF.3. The cathode material according to claim 1 , wherein a content ratio of the perovskite type oxide is 91.4 wt % or more.4. The cathode material according to claim 1 , wherein the (Co claim 1 ,Fe)Ois at least one selected from the group consisting of CoFeO claim 1 , CoFeOand CoFeO. This application is a divisional application of U.S. patent application Ser. No. 14/819,572 filed on Aug. 6, 2015, which is a continuation application of International Application No. PCT/JP2014/059861, filed Apr. 3, 2014, which claims priority to Japanese Application No. 2013-084154, filed in Japan on Apr. 12, 2013, the contents of each of which is hereby incorporated herein by reference.The present invention relates to a cathode material and a fuel cell.In recent years, fuel cell batteries have attracted attention in light of effective use of energy resources and environmental problems. A fuel cell includes a fuel battery cell and an interconnector. A fuel cell generally includes an anode, a cathode and a solid electrolyte layer that is disposed between the anode and the cathode.A widely known configuration for the raw material of the cathode is a perovskite type oxide such as LSCF. (For example, reference is made to Japanese Patent Application Laid-Open No. 2006-32132).However, repetitive use of the fuel cell for power ...

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Номер записи: 37
03-03-2022 дата публикации

FUSED SAND-RESISTANT TURBINE PART

Номер: US20220064072A1
Автор: BERNARD Benjamin Dominique Roger Joseph, BIANCHI Luc Patrice, JOULIA Aurélien
Принадлежит: SAFRAN

The present invention relates to a turbine part, comprising a substrate, an environmental barrier comprising at least one layer selected from a thermally insulating layer, a sub-layer adapted to promote adhesion between the substrate and a thermally insulating layer, and a protective layer adapted to protect the substrate from oxidation and/or corrosion, the environmental barrier at least partially covering the substrate, at least one reactive layer being adapted to react with at least one CMAS compound, the reactive layer covering at least part of the environmental barrier. The invention is characterized in that the material of the reactive layer comprises an oxide of formula A′A″BO, A′ being selected from a rare earth and yttrium, A″ being selected from a rare earth yttrium and aluminum, B being selected from titanium, zirconium, lufnium, tantlum and niobium, wherein δ is a real number between 0 and 0.5.

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Номер записи: 38
26-02-2015 дата публикации

Aerated composite materials, methods of production and uses thereof

Номер: US20150056437A1
Автор: David Vuong, Deepak Ravikumar, Omkar Deo, Sadananda Sahu, Vahit Atakan
Принадлежит: Individual

The invention provides novel aerated composite materials that possess excellent physical and performance characteristics of aerated concretes, and methods of production and uses thereof. These composite materials can be readily produced from widely available, low cost raw materials by a process suitable for large-scale production with improved energy consumption, desirable carbon footprint and minimal environmental impact.

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Номер записи: 39
03-03-2016 дата публикации

Sinterable and/or fusible ceramic mass, production and use thereof

Номер: US20160058558A1
Автор: Andrea Spitzer, Dagmar Nicolaides, Georg Berger, Heidi Marx, Jens Guenster
Принадлежит: Bundesministerium fuer Wirtschaft und Technologie

A sinterable and/or fusible ceramic mass is disclosed, having a long-term stable compound of crystalline phases of apatite, wollastonite, titanite and optionally cristobalite, which is stabilized by a glass phase, and a production process therefor. The ceramic mass can be obtained by sintering a mixture comprising at least the constituents SiO 2 , CaO, P 2 O 5 , MgO, CaF 2 and TiO 2 , on their own or in combination with at least one alkali oxide, the alkali oxide being chosen from NaO 2 and K 2 O. The invention further relates to uses of the sintered material in the form of shaped articles for strengthening, cleaning, roughening or polishing surfaces of medical implants or as a final prosthesis.

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Номер записи: 40
05-03-2015 дата публикации

RESISTIVE TYPE HUMIDITY SENSOR BASED ON POROUS MAGNESIUM FERRITE PELLET

Номер: US20150061706A1
Автор: KISHAN Hari, KOTNALA Ravinder Kumar, Shah Jyoti, SINGH Bhikham
Принадлежит:

The present invention relates to a process for preparing a humidity sensor based on resistive type porous Magnesium Ferrite (MgFeO) pellets and a humidity sensor thereof. More particularly, the present invention includes a synthesis process of preparing 30 to 40% porous MgFeOpellets. The process further includes making Ohmic contacts on the porous MgFeOpellets. The process is very cost effective and optimized to keep the resistance of the porous MgFeOpellets in the range 200-300MΩ. Further, the response and recovery time of the porous MgFeOpellets to humidity is in the range of few seconds only. Further, the porous MgFeOpellets can be used for humidity sensing for more than 12 months. Due to resistance stability even after long-term exposure in humidity, the porous MgFeOpellets do not require flash heating. Further, the humidity sensor prepared according to the process is highly sensitive towards relative humidity changes as the same is based on the measurement of resistance changes as compared to known humidity sensors which are based on the measurement of capacitance changes. 1. A process for preparing porous Magnesium Ferrite pellets having porosity in the range of 30 to 40% , the process comprising:obtaining a homogenous mixture of Magnesium oxide or Magnesium Carbonate and Ferrous oxide in a molar ratio of 1:2;pre-sintering the homogenous mixture in a furnace;grounding the pre-sintered mixture;pelletizing the grounded mixture to prepare intermediate pellets; andsintering the intermediate pellets to prepare the porous magnesium ferrite pellets having porosity in the range of 30 to 40%.2. The process as claimed in claim 1 , wherein the grain size of the porous magnesium ferrite pellets is in the range of 50 nm to 1 μm.3. The process as claimed in claim 1 , wherein the pore size of the porous magnesium ferrite pellets is in the range of 15 nm to 450 nm.4. The process as claimed in claim 1 , wherein the pelletizing comprises applying pressure on a predefined amount ...

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Номер записи: 41
01-03-2018 дата публикации

FERRITE COMPOSITION, FERRITE SINTERED BODY, ELECTRONIC DEVICE, AND CHIP COIL

Номер: US20180057408A1
Автор: KAKUDA Kouichi, Sato Takahiro, Suzuki Takashi, Suzuki Tatsuro, Takahashi Yukio, TANOUE Hiroyuki, WADA Ryuichi
Принадлежит: TDK Corporation

A ferrite composition includes a main component and an accessory component. The main component includes 43.0 to 51.0 mol % of iron oxide in terms of FeO, 5.0 to 15.0 mol % of copper oxide in terms of CuO, 1.0 to 24.9 mol % of zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The accessory component includes 0.2 to 3.0 pts. wt. of silicon compound in terms of SiO, 3.0 to 8.0 pts. wt. of cobalt compound in terms of CoO(excluding 3.0 pts. wt.), and 0.2 to 8.0 pts. wt. of bismuth compound in terms of BiOwith respect to 100 pts. wt. of the main component. 1. A ferrite composition comprising a main component and an accessory component , whereinthe main component includes:{'sub': 2', '3, '43.0 to 51.0 mol % of iron oxide in terms of FeO;'}5.0 to 15.0 mol % of copper oxide in terms of CuO;1.0 to 24.9 mol % of zinc oxide in terms of ZnO; anda remaining part of nickel oxide, andthe accessory component includes:{'sub': '2', '0.2 to 3.0 pts. wt. of silicon compound in terms of SiO;'}{'sub': 3', '4, '3.0 to 8.0 pts. wt. of cobalt compound in terms of CoO(excluding 3.0 pts. wt.); and'}{'sub': 2', '3, '0.2 to 8.0 pts. wt. of bismuth compound in terms of BiOwith respect to 100 pts. wt. of the main component.'}2. A ferrite sintered body composed of the ferrite composition according to .3. An electronic device comprising the ferrite sintered body according to .4. A chip coil comprising the ferrite sintered body according to . The present invention relates to a ferrite composition, a ferrite sintered body, an electronic device, and a chip coil.A frequency band used for mobile phones, PCs, and the like has recently become higher, and there has been already a plurality of standards of several GHz. Products for noise removal corresponding to signals of such high frequencies are required. Chip coils are a representative example of the products.Chip coils favorably used in various environments are currently required, and chip coils having favorable temperature ...

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Номер записи: 42
01-03-2018 дата публикации

MULTIFERROIC MATERIALS

Номер: US20180057409A1
Автор: Alaria Jonathan, Claridge John, Mandal Pranab, Pitcher Michael, Rosseinsky Matthew J.
Принадлежит:

The present invention relates to new multiferroic materials. More particularly, the present invention relates to new multiferroic single phase ceramic materials as well as to thin films formed from these materials, methods of preparing these materials and their use as multiferroic materials in electronic components and devices. 1. A single phase ceramic material comprising a morphotropic phase boundary and a continuous percolating network of magnetic cations.2. A single phase ceramic material according to claim 1 , wherein the ceramic material comprising a morphotropic phase boundary is ferroelectric and the magnetic cations are present in an amount sufficient to impart ferromagnetic properties to the material.3. A single phase material according to claim 1 , wherein the material is multiferroic at a temperature between 243K and 473K.4. A single phase material according to claim 1 , wherein the material is multiferroic at a temperature between 273K and 370K.5. A single phase ceramic material according to claim 1 , wherein the material has the composition shown in formula (I) below:{'br': None, 'i': x', 'x, 'sup': 'a', 'sub': (1-y)/2', 'y', '(1-y)/2', '3, '(1-)LMFeMgO-Q\u2003\u2003(I)'} x is a value ranging from 0.01 to 0.4;', 'y is a value ranging from 0.01 to 0.9;', 'L is selected from Bi, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu or Y;', {'sup': 'a', 'Mis selected from Ti, Hf or Zr; and'}, 'Q is:', [{'br': None, 'sup': 'b', 'sub': '3', 'RMO'}, R is selected from Ca, Sr or Ba; and', {'sup': 'b', 'Mis selected from Ti or Hf or Zr; or'}], 'wherein], 'a) a group of formula, {'sup': d', 'e', 'f', 'c, 'sub': 3', 'q', 'r', '(1-r)', '3', '(1-q)', '3', '3', '3', '3', '3', '2', '6', '1-p', 'p', '3', '3', '3', '2', '6, 'claim-text': wherein:', 'Ln is selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu or Y;', 'p is a value ranging from 0 to 1;', 'q is a value ranging from 0 to 1;', 'r is a value ranging from 0 to 1;', {'sup': 'c', 'Mis ...

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Номер записи: 43
01-03-2018 дата публикации

COMPOSITE HEXAGONAL FERRITE MATERIALS

Номер: US20180057410A1
Автор: Griffith Constance M., Hill Michael David, Polisetty Srinivas
Принадлежит:

Disclosed herein are embodiments of composite hexagonal ferrite materials formed from a combination of Y phase and Z phase hexagonal ferrite materials. Advantageously, embodiments of the material can have a high resonant frequency as well as a high permeability. In some embodiments, the materials can be useful for magnetodielectric antennas. 1. A composite hexagonal ferrite material , the material comprising:{'sub': 2-x', 'x', '2-x', 'x', '12', '22, 'a base y-phase hexagonal ferrite composition having a formula SrNaCoScFeO; and'}a doped-in z to form the composite hexagonal ferrite material, the composite hexagonal ferrite m-phase hexagonal ferrite composition material having a Q value of greater than about 15 at 1 GHz.2. The composite hexagonal ferrite material of wherein the material has a Q value of greater than about 20 at 1 GHz.3. The composite hexagonal ferrite material of wherein the material has a real permeability of between 3 and 7 at 1 GHz.4. The composite hexagonal ferrite material of wherein the material has a real permeability of greater than 6.5. The composite hexagonal ferrite material of wherein the z-phase hexagonal ferrite composition comprises BaSrNaCoScFeO.6. The composite hexagonal ferrite material of wherein the y-phase hexagonal ferrite composition comprises SrNaScCoFeO.7. The composite hexagonal ferrite material of further including BaCoFeO claim 1 , SrCoFeO claim 1 , MnO claim 1 , AlO claim 1 , or SiO.8. A method of forming a composite hexagonal ferrite material the method comprising combing a y-phase hexagonal ferrite composition having a formula SrNaCoScFeOat least partially with a z-phase hexagonal ferrite composition claim 1 , thereby forming a composite hexagonal ferrite material having a Q value of greater than about 15 at 1 GHz.9. The method of claim 8 , further including doping the material with indium or zirconium to reduce strontium levels.10. The method of wherein the composite hexagonal ferrite material has a Q value of greater ...

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Номер записи: 44
20-02-2020 дата публикации

ELABORATION OF AN ADVANCED CERAMIC MADE OF RECYCLED INDUSTRIAL STEEL WASTE

Номер: US20200055781A1
Автор: "AL NAIMI Khaloud Mohammed", CALVET Nicolas Jean-Michel, CARDOZO Uver Dario Villalobos, HOFFMANN Jean Francois
Принадлежит:

A ceramic and a method of forming a ceramic including milling steel slag exhibiting a diameter of 5 mm of less to form powder, sieving the powder to retain the powder having a particle size in the range of 20 to 400 removing free iron from the powder with a magnet, heat treating the powder at a temperature in the range of 700° C. to 1200° C. for a time period in the range of 1 hour to 10 hours and oxidizing retained iron in the powder, compacting the powder at a compression pressure in the range of 20 MPa to 300 MPA, and sintering the powder at a temperature in the range of 700° C. to 1400° C. for a time period in the range of 0.5 hours to 4 hours to provide a ceramic. 1. A method of forming a ceramic from steel slag , comprising:milling steel slag exhibiting a diameter of 5 mm of less to form powder;sieving said powder to retain said powder having a particle size in the range of 20 μm to 400 μm;removing free iron from said powder with a magnet;heat treating said powder at a temperature in the range of 700° C. to 1200° C. for a time period in the range of 1 hour to 10 hours and oxidizing retained iron in said powder;compacting said powder at a compression pressure in the range of 20 MPa to 300 MPa; andsintering said powder at a temperature in the range of 700° C. to 1400° C. for a time period in the range of 0.5 hours to 4 hours to provide a ceramic.2. The method of claim 1 , further comprising preheating said powder prior to sintering wherein said green compact is preheated at a rate of 1 K/min to 10 K/min.3. The method of claim 1 , wherein said sintering is performed after compacting claim 1 , wherein said compression pressure is in the range of 30 MPa to 300 MPa claim 1 , and said sintering temperature is in the range of 800° C. to 1100° C.4. The method of claim 3 , wherein said compression pressure in the range of 120 MPa to 180 MPa.5. The method of claim 1 , wherein sintering is performed concurrently with said compacting.6. The method of claim 5 , wherein said ...

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Номер записи: 45
02-03-2017 дата публикации

Fuel cell

Номер: US20170062837A1
Автор: Makoto Ohmori, Shinji Fujisaki, Takashi Ryu, Yoshihiko Yamamura
Принадлежит: NGK Insulators Ltd

A fuel cell comprises an anode, a cathode, and a solid electrolyte layer disposed between the anode and the cathode. The cathode includes a perovskite oxide as a main component. The perovskite oxide is expressed by the general formula ABO 3 and includes at least one of La and Sr at the A site. The cathode includes a surface region that is within 5 micrometers from the surface opposite the solid electrolyte layer. The surface region contains a main phase configured by the perovskite oxide and a secondary phase that is configured by strontium oxide. The occupied surface area ratio of the secondary phase in a cross section of the surface region is greater than or equal to 0.05% to less than or equal to 3%.

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Номер записи: 46
28-02-2019 дата публикации

MNZN FERRITE AND ITS PRODUCTION METHOD

Номер: US20190062217A1
Автор: KOYUHARA Norikazu, MIYOSHI Yasuharu, TADA Tomoyuki
Принадлежит: HITACHI METALS, LTD.

A method for producing MnZn ferrite comprising Fe, Mn and Zn as main components, and Ca, Si and Co, and at least one selected from the group consisting of Ta, Nb and Zr as sub-components, comprising a step of molding a raw material powder for the MnZn ferrite to obtain a green body, and a step of sintering the green body; the sintering step comprising a temperature-elevating step, a high-temperature-keeping step, and a cooling step; the cooling step including a slow cooling step of cooling in a temperature range of 1100° C. to 1250° C. at a cooling speed of 0° C./hour to 20° C./hour for 1 hours to 20 hours, and a cooling speed before and after the slow cooling step being higher than 20° C./hour; the MnZn ferrite having a volume resistivity of 8.5 Ω·m or more at room temperature, an average crystal grain size of 7 μm to 15 μm, and core loss of 420 kW/mor less between 23° C. and 140° C. at a frequency of 100 kHz and an exciting magnetic flux density of 200 mT. 1. A method for producing MnZn ferrite comprising Fe , Mn and Zn as main components , and Ca , Si and Co , and at least one selected from the group consisting of Ta , Nb and Zr as sub-components , comprisinga step of molding a raw material powder for said MnZn ferrite to obtain a green body, anda step of sintering said green body;said sintering step comprising a temperature-elevating step, a high-temperature-keeping step, and a cooling step;said cooling step including a slow cooling step of cooling in a temperature range of 1100° C. to 1250° C. at a cooling speed of 0° C./hour to 20° C./hour for 1 hours to 20 hours, anda cooling speed before and after said slow cooling step being higher than 20° C./hour,{'sup': '3', 'said MnZn ferrite having a volume resistivity of 8.5 Ω·m or more at room temperature, an average crystal grain size of 7 μm to 15 μm, and core loss of 420 kW/mor less between 23° C. and 140° C. at a frequency of 100 kHz and an exciting magnetic flux density of 200 mT.'}2. The method for producing ...

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Номер записи: 47
28-02-2019 дата публикации

YOSHIOKAITE GLASS-CERAMICS OBTAINED FROM GLASS FRITS

Номер: US20190062218A1
Автор: Comte Marie Jacqueline Monique
Принадлежит:

A glass ceramic material is disclosed that includes a residual glass, and a crystalline phase that includes a yoshiokaite phase. The yoshiokaite phase constitutes a main crystalline phase of the glass ceramic material. A method for making a glass ceramic material is also disclosed that includes heat treating frit glass to form the glass ceramic material, wherein the frit glass comprises: SiOfrom 15 mol % to 37 mol %; AlOfrom 40 mol % to 47 mol %; and CaO from 20 mol % to 30 mol %; 1. A glass ceramic material , comprising:an amorphous glass phase; anda crystalline phase comprising a yoshiokaite phase,wherein the yoshiokaite phase constitutes a main crystalline phase of the glass ceramic material.2. The glass ceramic material of claim 1 , wherein the crystalline phase comprises one or more of an anorthite phase claim 1 , a gehlenite phase claim 1 , a nepheline phase claim 1 , and a cubic zirconia phase.3. The glass ceramic material of claim 1 , wherein the yoshiokaite phase comprises greater than or equal to 55 wt. % of the crystalline phase.4. The glass ceramic material of claim 1 , wherein the yoshiokaite phase comprises greater than or equal to 80 wt. % of the crystalline phase.5. The glass ceramic material of claim 1 , wherein the yoshiokaite phase comprises greater than or equal to 90 wt. % of the crystalline phase.6. The glass ceramic material of claim 1 , wherein the yoshiokaite phase comprises yoshiokaite crystals having an average crystal size from greater than or equal to 100 nm to less than or equal to 160 nm.7. The glass ceramic material of claim 1 , wherein the yoshiokaite phase comprises yoshiokaite crystals having an average crystal size from greater than or equal to 130 nm to less than or equal to 160 nm.8. The glass ceramic material of claim 1 , wherein the glass ceramic material is comprised of greater than or equal to 80 wt. % of the crystalline phase.9. The glass ceramic material of claim 1 , wherein the glass ceramic material is comprised of ...

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Номер записи: 48
27-02-2020 дата публикации

METHOD FOR PREPARING COMPOSITE METAL OXIDE HOLLOW FIBRE

Номер: US20200062657A1
Автор: JIN Wanqin, LIU Zhengkun, ZHU Jiawei
Принадлежит: NANJING UNIVERSITY OF TECHNOLOGY

The invention relates to a method for preparing a composite metal oxide hollow fibre. A certain stoichiometry of composite metal oxide raw material and a polymer binding agent are added to an organic solvent, and mixed mechanically to obtain an evenly dispersed spinning solution having a suitable viscosity. After defoaming treatment, the spinning solution is extruded through a spinneret and, after undergoing a certain dry spinning process, enters an external coagulation bath; during this period, a phase inversion process occurs and composite metal oxide hollow fibre blanks are formed. The blanks are immersed in the external coagulation bath and the organic solvent is displaced; after natural drying, the blanks undergo a heat treatment process; during this period, polymer burn off, in situ reaction, and in situ sintering processes occur to obtain the composite metal oxide hollow fibre. 1. A method for preparing composite metal oxide hollow fibers , specifically a method for obtaining composite metal oxide hollow fibers from the raw chemicals for composite metal oxides by means of directly performing phase inversion and a thermal processing step , wherein the method comprises the following steps: raw chemicals for composite metal oxides and a polymer binding agent are added to an organic solvent , and mixed mechanically to obtain an evenly dispersed spinning solution; after defoaming treatment , the spinning solution is extruded through a spinneret and filling liquid from the spinneret passes through a dry air gap into an external coagulation bath and then is solidified to form composite metal oxide hollow fiber precursors; the precursors are immersed in the external coagulation bath to displace the organic solvent; after natural drying , the precursors are placed in a high temperature furnace for sintering; and polymer burn-off , in situ reaction (i.e. , solid phase reaction) and in situ sintering processes occur to obtain the composite metal oxide hollow fibers.2. ...

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Номер записи: 49
11-03-2021 дата публикации

A method of generating a mold and using it for printing a three-dimensional object

Номер: US20210069784A1
Автор: Alexander C. BARBATI, Mats Moosberg
Принадлежит: Addleap AB, Desktop Metal Inc

This invention relates to three-dimensional printing. This invention in particular relates to a method of generating mold and printing a three-dimensional object. The mold thickness is controlled and holes are generated in the mold surface for releasing moisture easily. The mold surface having holes is designed initially digitally and then combined with the three-dimensional model before printing the three-dimensional object. In case the thickness of the mold surface is more then it reduces the overall quality of the three-dimensional object. When the model is enclosed inside the mold, there will be some residue moisture in the model even if the drying apparatus can improve this by drying layer by layer. This affects the final quality of the part. A solution of these problems is provided in the present invention. The thickness of the mold layer is between 0.5 to 1 mm and holes having 0.1 to 0.4 mm diameter. The holes are evenly distributed on the mold. The mold having the holes is prepared from which moisture can easily escape. A method of digitally generated a mold having thin layer and holes is used for fabricating three dimensional objects with high precision and quality.

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Номер записи: 50
09-03-2017 дата публикации

Oxide ceramic and ceramic electronic component

Номер: US20170069413A1
Автор: Sakyo Hirose, Tsuyoshi Kimura
Принадлежит: Murata Manufacturing Co Ltd

An oxide ceramic expressed by the general formula Sr 2-x Ba x Co 2-y Mg y Fe 12-z Al z O 22 , where 0.7≦x≦1.3, 0<y≦0.8, and 0.8≦z≦1.2.

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Номер записи: 51
19-03-2015 дата публикации

Ferrite ceramic composition, ceramic electronic component, and process for producing ceramic electronic component

Номер: US20150077210A1
Автор: Atsushi Yamamoto, Tomoyuki ANKYU, Wataru Kanami, Yuko Nomiya
Принадлежит: Murata Manufacturing Co Ltd

This disclosure provides a ferrite ceramic composition, a ceramic electronic component including the ceramic composition, and a process of producing a ceramic electronic component including the ferrite ceramic composition, of which the insulation performance can be secured even when fired simultaneously with a metal wire material containing Cu as the main component, and which can have good electric properties. The ferrite ceramic composition includes an Ni—Mn—Zn-based ferrite having a molar content of CuO of 5 mol % or less and in which, when the molar content (x) of Fe 2 O 3 and the molar content (y) of Mn 2 O 3 are expressed by a coordinate point (x,y), the coordinate point (x,y) is located in an area bounded by coordinate points A (25,1), B (47,1), C (47,7.5), D (45,7.5), E (45,10), F (35,10), G (35,7.5) and H (25,7.5).

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Номер записи: 52
15-03-2018 дата публикации

MULTILAYER CERAMIC SUBSTRATE AND METHOD FOR MANUFACTURING MULTILAYER CERAMIC SUBSTRATE

Номер: US20180072627A1
Автор: Kato Tomoki, Sakamoto Sadaaki
Принадлежит:

A multilayer ceramic substrate that includes a laminate having stacked ceramic layers formed of a ceramic material containing a main component, containing 48 to 75% by weight of Si, 20 to 40% by weight of Ba, and 10 to 40% by weight of Al, and an auxiliary component containing at least 2.5 to 20 parts by weight of Mn with respect to 100 parts by weight of the main component, and in the laminate, glass ceramic layers in which the entire or a portion of the thickness thereof exists within 100 μm inside of the laminate as measured from opposed principal surfaces are further stacked. 1. A multilayer ceramic substrate comprising:a laminate having a plurality of stacked ceramic layers, an internal electrode disposed between predetermined layers of the plurality of ceramic layers,wherein the ceramic layers comprise a ceramic material having a main component containing 48 to 75% by weight of Si, 20 to 40% by weight of Ba, and 10 to 40% by weight of Al, and an auxiliary component containing at least 2.5 to 20 parts by weight of Mn with respect to 50 parts by weight of the main component; anda first glass ceramic layer in the laminate, wherein at least a portion of a thickness of the first glass ceramic layer exists within 100 μm inside of the laminate measured from a first principal surface of the laminate.2. The multilayer ceramic substrate according to claim 1 , wherein the first glass ceramic layer includes no more than six layers.3. The multilayer ceramic substrate according to claim 2 , wherein the first glass ceramic layer is one or two layers.4. The multilayer ceramic substrate according to claim 1 , further comprising a second glass ceramic layer in the laminate claim 1 , wherein at least a portion of a thickness of the second glass ceramic layer exists within 100 μm inside of the laminate measured from a second principal surface of the laminate claim 1 , the second principal surface opposing the first principal surface.5. The multilayer ceramic substrate according ...

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Номер записи: 53
24-03-2016 дата публикации

COMPOSITIONS AND METHODS FOR MAKING LOW THERMAL EXPANSION CERAMIC BODIES

Номер: US20160083297A1
Автор: Chou Kevin Ying, Fagan Sumalee L., Wheaton Bryan Ray
Принадлежит:

Comminuted pre-mixtures for technical ceramics production, and ceramic bodies made therefrom, the comminuted pre-mixtures being comprised of cellulosic components and alumina source components and the bodies being produced by compounding the comminuted pre-mixtures with powdered inorganic components into batch mixtures, adding liquids to the batch mixtures to form plastic batches, forming the plastic batches into shaped bodies, and heating the shaped bodies to form the ceramic bodies. 1. A powder batch mixture for a cordierite ceramic body comprising powdered sources of magnesia , alumina and silica in combination with a cellulose ether binder , wherein at least a portion of the powdered source of alumina is introduced into the batch mixture as a comminuted powder pre-mixture consisting essentially of deagglomerated hydrous alumina powder and cellulose ether binder.2. The powder batch mixture of wherein the comminuted powder pre-mixture has a mean particle size not exceeding 25 μm.3. The powder batch mixture of wherein at least some of the cellulose ether binder is substantially covered with the deagglomerated hydrous alumina powder.4. The powder batch mixture of wherein the hydrous alumina powder is selected from the group consisting of aluminum hydroxide claim 1 , boehmite and pseudo-boehmite.5. The powder batch mixture of wherein the cellulose ether binder is selected from the group consisting of methyl cellulose claim 1 , ethyl cellulose claim 1 , propyl cellulose claim 1 , hydroxypropyl cellulose claim 1 , hydroxypropyl methyl cellulose claim 1 , hydroxyethyl methyl cellulose claim 1 , ethylhydroxy ethyl cellulose claim 1 , hydroxybutyl cellulose claim 1 , hydroxybutyl methyl cellulose claim 1 , and sodium carboxy methyl cellulose.6. A comminuted powder blend consisting essentially of a deagglomerated hydrous alumina powder component and a cellulose ether powder component.7. The comminuted powder blend of having a mean particle size not exceeding 25 μm.8. The ...

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Номер записи: 54
31-03-2022 дата публикации

PREPARATION METHOD AND USE OF GREEN FLUORESCENT TRANSPARENT CERAMIC

Номер: US20220098113A1
Автор: LIU Xiaofeng, QIU Jianrong, TAN Dezhi, XIAO Wenge
Принадлежит: Zhejiang University

A preparation method and use of a green fluorescent transparent ceramic are disclosed. The preparation method includes: weighing, according to a stoichiometric ratio, elements present in CaCeAScBSiCO, in forms of oxides, carbonates or nitrates as raw materials; mixing the raw materials, annealing, melting at a high temperature, cooling and annealing at a low temperature; putting the glass into a high-temperature furnace, holding, raising the temperature, and performing crystallization and densification sintering; finally cutting, reducing and surface-polishing, where A is at least one from the group consisting of Lu, Y, Gd, La and Na; B is at least one from the group consisting of Zr, Hf and Mg; C is at least one from the group consisting of Al and P; x, y, z and m satisfy 0.001≤x≤0.06, 0≤y≤0.06, 0≤z≤0.06 and 0≤m≤0.3, respectively. 1. A green fluorescent transparent ceramic , wherein the green fluorescent transparent ceramic is prepared according to a stoichiometric ratio of elements present in a chemical formula of CaCeAScBSiCO , wherein A is at least one selected from the group consisting of Lu , Y , Gd , La and Na; B is at least one selected from the group consisting of Zr , Hf and Mg; C is at least one selected from the group consisting of Al and P; x , y , z and m satisfy 0.001≤x≤0.06 , 0≤y≤0.06 , 0≤z≤0.06 and 0≤m≤0.3 , respectively.2. A preparation method of the green fluorescent transparent ceramic , comprising the following steps:{'sub': 3-x-y', 'x', 'y', '2-z', 'z', '3-m', 'm', '12, '(1) weighing, according to a stoichiometric ratio, elements present in a chemical formula of CaCeAScBSiCO, in forms of oxides, carbonates or nitrates as starting materials; mixing the starting materials evenly to obtain a mixture; annealing the mixture; fully melting the mixture at a first temperature; cooling the mixture to obtain a transparent glass; annealing the transparent glass at a second temperature of 700-950° C. for 1-10 h to remove an internal stress of the ...

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Номер записи: 55
31-03-2022 дата публикации

FERRITE SINTERED BODY AND COIL COMPONENT

Номер: US20220098114A1
Автор: FUJITA Yuko, SHIMAMURA Atsushi, SUZUKI Takanori, TSUKADA Yuichiro
Принадлежит: MURATA MANUFACTURING CO., LTD.

A ferrite sintered body contains Fe, Mn, Zn, Cu, and Ni. Supposing that Fe, Mn, Zn, Cu, and Ni are converted into FeO, MnO, ZnO, CuO, and NiO, respectively, and the sum of the contents of FeO, MnO, ZnO, CuO, and NiO is 100 mol %, the sum of the contents of FeOand MnOis 48.47 mol % to 49.93 mol %, the content of MnOis 0.07 mol % to 0.37 mol %, the content of ZnO is 28.95 mol % to 33.50 mol %, and the content of CuO is 2.98 mol % to 6.05 mol %. Furthermore, 102 ppm to 4,010 ppm Zr in terms of ZrOand 10 ppm to 220 ppm Al in terms of AlOare contained per 100 parts by weight of the sum of the amounts of contained FeO, MnO, ZnO, CuO, and NiO. 1. A ferrite sintered body containing:Fe;Mn;Zn;Cu; andNi,{'sub': 2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3, 'wherein when Fe, Mn, Zn, Cu, and Ni are converted into FeO, MnO, ZnO, CuO, and NiO, respectively, and a sum of contents of FeO, MnO, ZnO, CuO, and NiO is 100 mol %, a sum of the contents of FeOand MnOis 48.47 mol % to 49.93 mol %, the content of MnOis 0.07 mol % to 0.37 mol %, the content of ZnO is 28.95 mol % to 33.50 mol %, and the content of CuO is 2.98 mol % to 6.05 mol %,'}{'sub': 2', '2', '3', '2', '3', '2', '3, '102 ppm to 4,010 ppm Zr in terms of ZrOand 10 ppm to 220 ppm Al in terms of AlOare further contained per 100 parts by weight of a sum of amounts of contained FeO, MnO, ZnO, CuO, and NiO, and'}in a cross section of the ferrite sintered body, an area fraction of pores and an area fraction of segregations containing Cu are 2.0% or less.2. The ferrite sintered body according to claim 1 , further containing:P, Cr, and S.3. The ferrite sintered body according to claim 1 , further containing:{'sub': 2', '5, '5 ppm to 50 ppm P in terms of PO;'}{'sub': 2', '3, '10 ppm to 305 ppm Cr in terms of CrO; and'}{'sub': 2', '3', '2', '3, '5 ppm to 108 ppm S per 100 parts by weight of the sum of the amounts of contained FeO, MnO, ZnO, CuO, and NiO, wherein in a cross section of the ferrite sintered body, ...

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Номер записи: 56
31-03-2022 дата публикации

FIRE RESISTANT CLADDING MATERIAL

Номер: US20220098874A1
Автор: Murray Gerard
Принадлежит:

The present application relates to fire resistant compositions, particularly fire resistant compositions comprising an inorganic filler. In particular, the disclosure relates to cladding compositions and composite panels comprising the fire resistant cladding compositions. The disclosure also relates to the preparation of such compositions, composite panels and to their use. 1: A cladding composition comprising:an inorganic binder;a silicate mineral; and aninorganic phosphate.2: The composition of claim 1 , wherein the composition forms a ceramic on exposure to an elevated temperature experienced under fire conditions.3: The composition of claim 1 , wherein the composition is substantially free of organic polymer.4: The composition of claim 1 , further comprising a borate.5: The composition of claim 4 , wherein the borate is zinc borate.6: The composition of claim 4 , wherein the borate is present in an amount of 0.1% to 10% by weight of the total composition.7: The composition of claim 1 , wherein the inorganic phosphate is selected from the group consisting of ammonium phosphate claim 1 , ammonium polyphosphate or ammonium pyrophosphate and combinations thereof.8: The composition of claim 7 , wherein the inorganic phosphate is ammonium polyphosphate.9: The composition of claim 1 , wherein the inorganic phosphate is present in an amount of 10% to 40% by weight of the total composition.10: The composition of claim 1 , wherein the silicate mineral is selected from the group consisting of an alumina-silicate claim 1 , an alkali alumina-silicate claim 1 , a magnesium silicate or a calcium silicate and combinations thereof.11: The composition of claim 1 , wherein the silicate mineral is wollastonite.12: The composition of claim 1 , wherein the silicate mineral is present in an amount of 20% to 60% by weight of the total composition.13: The composition of claim 1 , wherein the inorganic binder is selected from the group consisting of cement claim 1 , gypsum claim 1 , ...

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Номер записи: 57
12-03-2020 дата публикации

Pavers and block composite materials and methods of preparation thereof

Номер: US20200079695A1
Автор: Dawid ZAMBRZYCKI, Deepak Ravikumar, Francis HENN, John P. Kuppler, Kenneth Smith, Oguzhan OFLAZ, Vahit Atakan
Принадлежит: Solidia Technologies Inc

The invention provides novel paving stones and construction block composite materials and methods for preparation thereof. The paving stones and construction block composite materials can be readily produced from widely available, low cost precursor materials by a production process that involves compacting in a mold that is suitable for large-scale production. The precursor materials include calcium silicate, for example, wollastonite, and particulate filler materials which can comprise silicon dioxide-rich materials. Additives can include calcium carbonate-rich and magnesium carbonate-rich materials. Various additives can be used to fine-tune the physical appearance and mechanical properties of the composite material, such as colorants such as particles of colored materials, such as, and pigments (e.g., black iron oxide, cobalt oxide and chromium oxide). These paving stones and construction block composite materials exhibit visual patterns similar to stone as well as display compressive strength and water absorption equal to or better than that of stone.

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Номер записи: 58
14-03-2019 дата публикации

Low temperature co-fireable dielectric materials

Номер: US20190081377A1
Автор: David Bowie Cruickshank, David Martin Firor, Jeffrey Alan Shunkwiler, Jianzhong Jiang, Michael David Hill, Neil Bruce Coats
Принадлежит: Skyworks Solutions Inc

Disclosed herein are embodiments of low temperature co-fireable dielectric materials which can be used in conjunction with high dielectric materials to form composite structures, in particular for isolators and circulators for radiofrequency components. Embodiments of the low temperature co-fireable dielectric materials can be scheelite or garnet structures, for example barium tungstate. Adhesives and/or glue is not necessary for the formation of the isolators and circulators.

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Номер записи: 59
25-03-2021 дата публикации

TEMPERATURE INSENSITIVE DIELECTRIC CONSTANT GARNETS

Номер: US20210087071A1
Автор: Cruickshank David Bowie, Hill Michael David
Принадлежит:

Embodiments of synthetic garnet materials having advantageous properties, especially for below resonance frequency applications, are disclosed herein. In particular, embodiments of the synthetic garnet materials can have high Curie temperatures and dielectric constants while maintaining low magnetization. These materials can be incorporated into isolators and circulators, such as for use in telecommunication base stations. 1. (canceled)2. A temperature-insensitive circulator or isolator including a ceramic material , the ceramic material comprising at least 1.4 units of bismuth incorporated into a crystal structure of a garnet to form a synthetic garnet having a dielectric constant of above 24 with an absence of any aluminum occurring within the synthetic garnet.3. The temperature-insensitive circulator or isolator of wherein the synthetic garnet has a dielectric constant of above 25.4. The temperature-insensitive circulator or isolator of wherein the synthetic garnet has a dielectric constant of above 26.5. The temperature-insensitive circulator or isolator of wherein the synthetic garnet has a Curie temperature of above 200.6. The temperature-insensitive circulator or isolator of wherein the synthetic garnet has a Curie temperature of above 220.7. The temperature-insensitive circulator or isolator of wherein the synthetic garnet has a composition: YBiCaZrFeO claim 2 , 0 Подробнее

Номер записи: 60
25-03-2021 дата публикации

Ferrite sintered magnet

Номер: US20210090768A1
Автор: Hiroyuki Morita, Masanori Ikeda, Shogo Muroya, Tomokazu Ishikura, Yoshitaka Murakawa
Принадлежит: TDK Corp

The present invention provides a ferrite sintered magnet comprising ferrite crystal grains having a hexagonal structure, wherein the ferrite sintered magnet comprises metallic elements at an atomic ratio represented by formula (1). In formula (1), R is at least one element selected from the group consisting of Bi and rare-earth elements, and R comprises at least La. In formula (1), w, x, z and m satisfy formulae (2) to (5). The above-mentioned ferrite sintered magnet further has a coefficient of variation of a size of the crystal grains in a section parallel to a c axis of less than 45%. Ca 1-w-x R w Sr x Fe z Co m   (1) 0.360≤w=0.420  (2) 0.110≤x≤0.173  (3) 8.51≤z≤9.71  (4) 0.208≤m≤0.269  (5)

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Номер записи: 61
29-03-2018 дата публикации

Apparatus For Absorbing Electrical Noise On Cables

Номер: US20180090264A1
Автор: FIEBIG Nils-Henning, MÜTSCH Steffen, SCHLEICH Harald, TREBUCH Simon, WEIDINGER Robert
Принадлежит:

An apparatus for absorbing electrical noise on cables that includes a housing which contains two partial shells, each partial shell receiving one element which is composed of a material which decreases or absorbs noise. In a closed state, two end sides of the housing each have one opening for a cable to be routed through. The apparatus further includes at least one fixing means for securing the housing to the cable, with the fixing means being arranged on at least one end side of the housing in the region of the opening, and having at least two clips, the limbs of which face one another and can be deformed transverse to the cable and form a slot for receiving the cable in a clamping manner between them. The limbs of the two clips running parallel to one another. 1. Apparatus for absorbing electrical noise on cables , comprising 'in the closed state, has in each case one opening for a cable, which is to be routed through, in the two end sides, and also comprising', 'a housing which contains two partial shells for receiving in each case one element which is composed of a material which decreases or absorbs noise, which housing,'} the fixing means being arranged on at least one end side of the housing in the region of the opening, and', 'having at least two clips, the limbs, which face one another and can be deformed transverse to the cable, of the said clips forming a slot for receiving the cable in a clamping manner between them, with the limbs, which face one another, of the two clips running parallel to one another., 'at least one fixing means for securing the housing to the cable, with'}2. Apparatus according to claim 1 , wherein the at least two clips are of U-shaped design claim 1 , and the ends of the limbs are integrally formed on the partial shell.3. Apparatus according to claim 1 , wherein the inner sides claim 1 , which face one another claim 1 , of the limbs have a ribbed portion which runs in the longitudinal direction of the limbs.4. Apparatus according ...

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Номер записи: 62
26-06-2014 дата публикации

Disk and process for producing base material for disk, and disk roll

Номер: US20140173901A1
Автор: Kazuhisa Watanabe, Kouji Iwata, Masaaki Nakayama
Принадлежит: Nichias Corp

The present invention relates to a process for producing a base material for disks of disk rolls, in which the disk roll contains a rotating shaft and a plurality of the disks fitted on the rotating shaft by insertion whereby the outer peripheral surface of the disks serves as a conveying surface, in which the process contains molding a slurry raw material containing inorganic fibers, an inorganic filler having an aspect ratio of from 1 to 25 and an inorganic binder into a plate shape; and drying the molded plate.

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Номер записи: 63
07-04-2016 дата публикации

HONEYCOMB STRUCTURAL BODY AND METHOD FOR MANUFACTURING THE SAME

Номер: US20160096777A1
Автор: IZUMI Yunie, Kobayashi Yoshimasa
Принадлежит:

A honeycomb structural body includes: a partition wall formed of a porous ceramic which forms and defines a plurality of cells each functioning as a flow path of a fluid and extending from one end surface to the other end surface; and an outer circumference wall formed along the outermost circumference, where an oxide ceramic containing a FeOphase in which a solute component capable of forming a spinel-type oxide with Fe is solid-dissolved is formed. 1. A honeycomb structural body comprising: a partition wall formed of a porous ceramic which forms and defines a plurality of cells each functioning as a flow path of a fluid and extending from one end surface to the other end surface; and an outer circumference wall formed along the outermost circumference ,{'sub': 3', '4, 'wherein an oxide ceramic containing a FeOphase in which a solute component capable of forming a spinel-type oxide with Fe is solid-dissolved is formed.'}2. The honeycomb structural body according to claim 1 , wherein the oxide ceramic is an electrode formed on an outer surface of the honeycomb structural body.311. The honeycomb structural body according to claim 1 , wherein the oxide ceramic is an electrode and formed on an outer surface of the honeycomb structural body so that the ratio of a length L of the electrode to a total length L of the honeycomb structural body in the flow path direction is in a range of 0.1 to 1 and the ratio of a length X of the electrode to an outer circumference length X of the surface of the honeycomb structural body perpendicular to the flow path is in a range of 0.02 to 0.3.4. A honeycomb structural body comprising: a partition wall formed of a porous ceramic which forms and defines a plurality of cells each functioning as a flow path of a fluid and extending from one end surface to the other end surface; and an outer circumference wall formed along the outermost circumference claim 1 ,{'sub': 3', '4, 'b': 1', '1, 'wherein an electrode formed of an oxide ceramic ...

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Номер записи: 64
07-04-2016 дата публикации

PYROELECTRIC MATERIAL, MANUFACTURING METHOD OF PYROELECTRIC MATERIAL, PYROELECTRIC ELEMENT, MANUFACTURING METHOD OF PYROELECTRIC ELEMENT, THERMOELECTRIC CONVERSION ELEMENT, MANUFACTURING METHOD OF THERMOELECTRIC CONVERSION ELEMENT, THERMAL PHOTODETECTOR, MANUFACTURING METHOD OF THERMAL PHOTODETECTOR, AND ELECTRONIC INSTRUMENT

Номер: US20160097682A1
Автор: TSUCHIYA Yasushi, YONEMURA Takayuki
Принадлежит:

A pyroelectric material is constituted with an oxide containing iron, manganese, bismuth, and lanthanum, in which a ratio of the number of the manganese atoms to the sum of the number of the iron atoms, the number of the manganese atoms, and the number of titanium atoms is equal to or greater than 1.0 at % and equal to or less than 2.0 at %, and a ratio of the number of the titanium atoms to the sum of the number of the iron atoms, the number of the manganese atoms, and the number of the titanium atoms is equal to or greater than 0 at % and equal to or less than 4.0 at %. 1. A pyroelectric material comprising an oxide containing iron , manganese , bismuth , and lanthanum ,wherein a ratio of the number of the manganese atoms to the sum of the number of the iron atoms, the number of the manganese atoms, and the number of titanium atoms is equal to or greater than 1.0 at % and equal to or less than 2.0 at %, anda ratio of the number of the titanium atoms to the sum of the number of the iron atoms, the number of the manganese atoms, and the number of the titanium atoms is equal to or greater than 0 at % and equal to or less than 4.0 at %.2. The pyroelectric material according to claim 1 ,wherein a ratio of the number of the lanthanum atoms to the sum of the number of the bismuth atoms and the number of the lanthanum atoms is equal to or greater than 10 at % and equal to or less than 20 at %.3. A manufacturing method of a pyroelectric material claim 1 , comprising heating a solution obtained by dissolving fatty acid metal salts in an organic solvent so as to manufacture a pyroelectric material constituted with an oxide containing iron claim 1 , manganese claim 1 , bismuth claim 1 , and lanthanum claim 1 ,wherein in the pyroelectric material, a ratio of the number of the manganese atoms to the sum of the number of the iron atoms, the number of the manganese atoms, and the number of titanium atoms is equal to or greater than 1.0 at % and equal to or less than 2.0 at %, and ...

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Номер записи: 65
26-06-2014 дата публикации

FERRITE CERAMIC COMPOSITION, CERAMIC ELECTRONIC COMPONENT, AND METHOD FOR MANUFACTURING CERAMIC ELECTRONIC COMPONENT

Номер: US20140176285A1
Автор: NAKAMURA Akihiro, YAMAMOTO Atsushi
Принадлежит: MURATA MANUFACTURING CO., LTD.

A ceramic electronic component includes a magnetic section composed of a ferrite material and a coil conductor containing Cu as its main constituent. The magnetic section is formed from Ni—Cu—Zn ferrite which falls within the range specified by (x, y)=A (25, 1), B (47, 1), C (47, 7.5), D (46, 7.5), E (46, 10), F (30, 10), G (30, 7.5), and H (25, 7.5) when the molar content x of FeOand the molar content y of MnOare represented by (x, y). A CuO molar content of 0.5 to 10.0 mol %, a ZnO content of 1.0 to 35.0 mol %, a MgO content of 5.0 to 35.0 mol %, and NiO as the balance is present. Even when co-firing with a conductive material containing Cu as its main constituent, insulation properties are ensured, favorable electrical properties are achieved, and a ceramic electronic component is achieved. 1. A ferrite ceramic composition containing at least Fe , Mn , Cu , Zn , Mg , and Ni ,{'sub': 2', '3', '2', '3, 'wherein when a molar content x mol % of Fe in terms of FeOand a molar content y mol % of Mn in terms of MnOare represented by (x, y), the (x, y) falls within a region surrounded by A (25, 1), B (47, 1), C (47, 7.5), D (46, 7.5), E (46, 10), F (30, 10), G (30, 7.5), and H (25, 7.5), a molar content of Cu is 0.5 to 10.0 mol % in terms of CuO, a molar content of Zn is 1.0 to 35.0 mol % in terms of ZnO, and a molar content of Mg is 5.0 to 35.0 mol % in terms of MgO.'}2. A ceramic electronic component comprising:a magnetic section including a ferrite material; anda conductive section containing Cu as a main constituent,the magnetic section being formed from a ferrite ceramic composition containing at least Fe, Mn, Cu, Zn, Mg, and Ni,{'sub': 2', '3', '2', '3, 'wherein when a molar content x mol % of Fe in terms of FeOand a molar content y mol % of Mn in terms of MnOare represented by (x, y), the (x, y) falls within a region surrounded by A (25, 1), B (47, 1), C (47, 7.5), D (46, 7.5), E (46, 10), F (30, 10), G (30, 7.5), and H (25, 7.5), a molar content of Cu is 0.5 to 10 ...

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Номер записи: 66
28-03-2019 дата публикации

DIELECTRIC CERAMIC COMPOSITION AND ELECTRONIC COMPONENT

Номер: US20190092692A1
Автор: ABE Masanori, FUKUI Takashi, ISHIMOTO Atsushi, KOBUKE Hisashi
Принадлежит: TDK Corporation

A dielectric ceramic composition includes: MgSiOas main component; R-containing, Cu-containing, and B-containing compounds, and Li-containing glass, as sub-component. R is an alkali earth metal. R-containing compound greater than or equal to 0.2 part by mass and less than or equal to 4.0 parts by mass, contained in terms of oxide, Cu-containing compound of greater than or equal to 0.5 part by mass and less than or equal to 3.0 parts by mass, contained in terms of oxide, and B-containing compound greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass, contained in terms of oxide, to 100 parts by mass of main component. Li-containing glass of greater than or equal to 2 parts by mass and less than or equal to 10 parts by mass contained to total a 100 parts by mass of main component, and sub-component excluding Li-containing glass. 1. A dielectric ceramic composition , comprising:{'sub': 2', '4, 'MgSiOas a main component; and'}an R-containing compound, a Cu-containing compound, a B-containing compound, and Li-containing glass, as an sub-component,wherein R is an alkali earth metal,{'sub': 2', '3, 'the R-containing compound of greater than or equal to 0.2 part by mass and less than or equal to 4.0 parts by mass is contained in terms of RO, the Cu-containing compound of greater than or equal to 0.5 part by mass and less than or equal to 3.0 parts by mass is contained in terms of CuO, and the B-containing compound of greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass is contained in terms of BO, with respect to 100 parts by mass of the main component, and the Li-containing glass of greater than or equal to 2 parts by mass and less than or equal to 10 parts by mass is contained with respect to the total of 100 parts by mass of the main component and the sub-component excluding the Li-containing glass.'}2. The dielectric ceramic composition according to claim 1 , further comprising:a Mn-containing compound as ...

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Номер записи: 67
05-04-2018 дата публикации

FERRITE MAGNETIC SUBSTANCE AND METHOD OF MANUFACTURING THE SAME

Номер: US20180096761A1
Автор: Ham Choul Hwan, KANG Hee Bok, KIM Young Min, Lee Kee Yang
Принадлежит:

Disclosed is a method of manufacturing a ferrite magnetic substance, including: a first mixing operation of providing a first mixture composed of 47 to 49 wt % of Fe, 16 to 18 wt % of Mn, 5.2 to 7.2 wt % of Zn, and a remainder of oxygen and other inevitable impurities, a second mixing operation of providing a second mixture composed of the first mixture and an additive including, based on 100 parts by weight of the first mixture, 28 to 51 ppm of Si, 140 to 210 ppm of Nb and 155 to 185 ppm of Zr, and a finish operation of producing a ferrite magnetic substance by sintering the second mixture. 1. A method of manufacturing a ferrite magnetic substance , comprising:a first mixing operation of providing a first mixture comprising 47 to 49 wt % of Fe, 16 to 18 wt % of Mn, 5.2 to 7.2 wt % of Zn, and a remainder of oxygen and other inevitable impurities;a second mixing operation of providing a second mixture comprising the first mixture and an additive comprising, based on 100 parts by weight of the first mixture, 28 to 51 ppm of Si, 140 to 210 ppm of Nb and 155 to 185 ppm of Zr; anda finish operation of producing a ferrite magnetic substance by sintering the second mixture.2. The method according to claim 1 , wherein the first mixing operation of providing the first mixture comprises providing the first mixture by mixing 67.8 to 69.9 wt % of iron oxide (FeO) claim 1 , 6.8 to 8.8 wt % of zinc oxide (ZnO) claim 1 , 22.3 to 24.3 wt % of manganese oxide (MnO) and other inevitable impurities claim 1 , which are in a powder phase.3. The method according to claim 2 , further comprising claim 2 , before the first mixing operation of providing the first mixture claim 2 ,a preparation operation of coarsely grinding the iron oxide so that a particle size of the iron oxide is 1.15 μm or less.4. The method according to claim 1 , wherein in the finish operation claim 1 , the ferrite magnetic substance has a density of 4.8 g/cmor more claim 1 , a permeability of 3 claim 1 ,300 or more ...

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Номер записи: 68
05-04-2018 дата публикации

FERRITE COMPOSITION AND ELECTRONIC DEVICE

Номер: US20180096768A1
Автор: MURAI Asuka, SHIBAYAMA Takeshi, Suzuki Takashi, TAKAHASHI Masaki, Takahashi Yukio, TANOUE Hiroyuki
Принадлежит: TDK Corporation

A ferrite composition includes a main component and an accessory component. The main component includes 18 to 30 mol % of iron oxide in terms of FeO, 4 to 14 mol % of copper oxide in terms of CuO, 0 to 6 mol % of zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The accessory component includes 0.30 to 1.83 pts.wt. of silicon compound in terms of SiO, 2.00 to 10.00 pts.wt. of cobalt compound in terms of CoO, and 1.00 to 3.00 pts.wt. of bismuth compound in terms of BiOwith respect to 100 pts.wt. of the main component. A cobalt compound content in terms of CoOdivided by a silicon compound content in terms of SiOis a value of 5.5 to 30.0. 1. A ferrite composition comprising a main component and an accessory component , whereinthe main component includes:{'sub': 2', '3, '18 to 30 mol % of iron oxide in terms of FeO;'}4 to 14 mol % of copper oxide in terms of CuO;0 to 6 mol % of zinc oxide in terms of ZnO; anda remaining part of nickel oxide,the accessory component includes:{'sub': '2', '0.30 to 1.83 pts.wt. of silicon compound in terms of SiO;'}{'sub': '3', '2.00 to 10.00 pts.wt. of cobalt compound in terms of Co04; and'}{'sub': 2', '3, '1.00 to 3.00 pts.wt. of bismuth compound in terms of BiOwith respect to 100 pts.wt. of the main component, and'}{'sub': 3', '4', '2, 'a cobalt compound content in terms of CoOdivided by a silicon compound content in terms of SiOis a value of 5.5 to 30.0.'}2. An electronic device comprising a ferrite sintered body composed of the ferrite composition according to . The present invention relates to a ferrite composition suitable for manufacturing multilayer inductors or so and an electronic device having a ferrite sintered body composed of the composition.In recent years, miniaturization and higher frequency of DC-DC converters have been advancing, and there exists a DC-DC converter that is driven by a frequency of about a few tens of MHz to several hundred MHz. Inductors applied to DC-DC converters with miniaturization and ...

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Номер записи: 69
06-04-2017 дата публикации

MODIFIED NI-ZN FERRITES FOR RADIOFREQUENCY APPLICATIONS

Номер: US20170098885A1
Автор: Anderson Kelvin Mitchell, Cruickshank David Bowie, Hill Michael David
Принадлежит:

Embodiments disclosed herein relate to using cobalt (Co) to fine tune the magnetic properties, such as permeability and magnetic loss, of nickel-zinc ferrites to improve the material performance in electronic applications. The method comprises replacing nickel (Ni) with sufficient Cosuch that the relaxation peak associated with the Cosubstitution and the relaxation peak associated with the nickel to zinc (Ni/Zn) ratio are into near coincidence. When the relaxation peaks overlap, the material permeability can be substantially maximized and magnetic loss substantially minimized. The resulting materials are useful and provide superior performance particularly for devices operating at the 13.56 MHz ISM band. 120-. (canceled)21. A material for radiofrequency applications , the material comprising:a single-phase modified Ni—Zn ferrite formed from a base Ni—Zn ferrite, the single-phase modified Ni—Zn ferrite including elements Ni, Zn, Co, Fe, and O, and having a spinel crystal structure and magnetic Q of greater than 100.22. The material of wherein the single-phase modified Ni—Zn ferrite has a composition NiCoZnFeO.23. The material of wherein the single-phase modified Ni—Zn ferrite has a permeability of 54.24. The material of wherein the base Ni—Zn ferrite has the formula NiZnFeO.25. The material of wherein the single-phase modified Ni—Zn ferrite is configured for use in the 13.56 MHz ISM band.26. The material of wherein the single-phase modified Ni—Zn ferrite is configured for use in the 27 MHz ISM band.27. The material of wherein the single-phase modified Ni—Zn ferrite further includes Mn.28. A radiofrequency device selected from the group consisting of radio-frequency identification tags claim 21 , biomedical sensors claim 21 , and radiofrequency antennas including the radiofrequency material of .29. A radiofrequency antenna claim 21 , the antenna being formed from a nickel zinc ferrite comprising:a single-phase modified Ni—Zn ferrite, the single-phase modified Ni—Zn ...

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Номер записи: 70
06-04-2017 дата публикации

MODIFIED Z-TYPE HEXAGONAL FERRITE MATERIALS WITH ENHANCED RESONANT FREQUENCY

Номер: US20170098896A1
Автор: Hill Michael David
Принадлежит:

Disclosed herein are embodiments of modified z-type hexagonal ferrite materials having improved properties that are advantageous for radiofrequency applications, in particular high frequency ranges for antennas and other devices. Atomic substitution of strontium, aluminum, potassium, and trivalent ions can be used to replace certain atoms in the ferrite crystal structure to improve loss factor at high frequencies. 1. A high resonant-frequency material composition comprising:{'sub': 3-x', 'x', '2', '24-y', 'y', '41, 'an enhanced z-type hexagonal ferrite having some barium atoms substituted for strontium atoms and some iron atoms substituted for aluminum atoms, the enhanced z-type hexagonal ferrite having a formula BaSrCoFeAlOand having a resonant frequency of over about 500 MHz.'}2. The high resonant-frequency material of wherein 0 Подробнее

Номер записи: 71
28-03-2019 дата публикации

MNZN FERRITE CORE AND ITS PRODUCTION METHOD

Номер: US20190096554A1
Автор: KOYUHARA Norikazu, MIYOSHI Yasuharu, TADA Tomoyuki, Tanaka Satoru
Принадлежит: HITACHI METALS, LTD.

A method for producing a MnZn ferrite core used at a frequency of 1 MHz or more and an exciting magnetic flux density of 75 mT or less, the MnZn ferrite comprising 53-56% by mol of Fe (calculated as FeO), and 3-9% by mol of Zn (calculated as ZnO), the balance being Mn (calculated as MnO), as main components, and 0.05-0.4 parts by mass of Co (calculated as CoO) as a sub-component, per 100 parts by mass in total of the main components (calculated as the oxides); comprising a step of molding a raw material powder for the MnZn ferrite to obtain a green body; a step of sintering the green body and cooling it to a temperature of lower than 150° C. to obtain a sintered body of MnZn ferrite; and a step of conducting a heat treatment comprising heating the sintered body of MnZn ferrite to a temperature meeting Condition 1 of 200° C. or higher, and Condition 2 of (Tc−90)° C. to (Tc+100) ° C., wherein Tc is a Curie temperature (° C.) calculated from the percentages by mol of FeOand ZnO contained in the main components of the MnZn ferrite, keeping the sintered body at the above temperature for a predetermined period of time, and then cooling the sintered body from the keeping temperature at a speed of 50° C./hour or less. 2. The method for producing a MnZn ferrite core according to claim 1 , wherein said sintering step provides the sintered body of MnZn ferrite with core loss Pcv of less than 4000 kW/mbetween 0° C. and 120° C. claim 1 , at a frequency of 2 MHz and an exciting magnetic flux density of 50 mT.3. The method for producing a MnZn ferrite core according to claim 2 , wherein said heat treatment step provides the sintered body of MnZn ferrite with core loss Pcv of less than 1500 kW/mbetween 0° C. and 120° C. claim 2 , at a frequency of 2 MHz and an exciting magnetic flux density of 50 mT.4. The method for producing a MnZn ferrite core according to claim 1 , wherein said MnZn ferrite further comprises 0.003-0.015 parts by mass of Si (calculated as SiO) claim 1 , 0.06-0.3 ...

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Номер записи: 72
23-04-2015 дата публикации

Method for producing ferrite ceramic

Номер: US20150108697A1
Автор: Jinhui Yu, Shaohua Su
Принадлежит: AAC Technologies Pte Ltd

A method for producing ferrite ceramic includes the steps of providing a ferrite powder; oven-drying the ferrite powder; adding organic additives into the oven-dried powder and mixing them to form a ferrite slurry; debubbling the ferrite slurry and then tape casting it into a green tape; heating the green tape in air to 300-500° C. for 5 h to remove the organic additives from the green tape; sintering the organic additives removed green tape at 900-1000° C. for 2-5 h to obtain ferrite ceramic.

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Номер записи: 73
02-04-2020 дата публикации

MAGNETIC NANOCOMPOSITE COMPOSITIONS

Номер: US20200101177A1
Автор: Dravid Vinayak P., Nandwana Vikas
Принадлежит:

Superparamagnetic nanocomposites are provided. In an embodiment, a superparamagnetic nanocomposite comprises a superparamagnetic core comprising a first, soft superparamagnetic ferrite and a superparamagnetic shell comprising a second, soft superparamagnetic ferrite, the shell formed over the core, wherein the first and second soft superparamagnetic ferrites are different compounds and have different magnetocrystalline anisotropies. 1. A superparamagnetic nanocomposite comprising a superparamagnetic core comprising a first , soft superparamagnetic ferrite and a superparamagnetic shell comprising a second , soft superparamagnetic ferrite , the shell formed over the core , wherein the first and second soft superparamagnetic ferrites are different compounds and have different magnetocrystalline anisotropies.2. The superparamagnetic nanocomposite of claim 1 , wherein a sample of nanoparticles composed of the first claim 1 , soft superparamagnetic ferrite and having an average diameter of 12 nm provides a magnetization-field loop exhibiting no hysteresis at room temperature and a single-peaked zero-field cooling curve having a blocking temperature of less than room temperature.3. The superparamagnetic nanocomposite of claim 1 , wherein the first and second soft superparamagnetic ferrites are independently selected from FeOand soft superparamagnetic ferrites according to formula M′M″FeO claim 1 , wherein M′ and M″ are different and are independently selected from Mn claim 1 , Ni claim 1 , Mg claim 1 , and Zn and 0≤x≤1.4. The superparamagnetic nanocomposite of claim 1 , wherein the first and second soft superparamagnetic ferrites are independently selected from FeO claim 1 , MnFeO claim 1 , and ZnMFeO claim 1 , wherein 0.1 Подробнее

Номер записи: 74
20-04-2017 дата публикации

Mid-K LTCC Compositions And Devices

Номер: US20170110246A1
Автор: George E. Graddy, Jr., George E. Sakoske, Gregory R. Prinzbach, James E. Henry, John J. Maloney, Orville W. Brown, Srinivasan Sridharan, Stanley Wang, Walter J. Symes, Jr., Yie-Shein Her
Принадлежит: Ferro Corp

LTCC devices are produced from dielectric compositions comprising a mixture of precursor materials that, upon firing, forms a dielectric material comprising a matrix of titanates of alkaline earth metals, the matrix doped with at least one selected from rare-earth element, aluminum oxide, silicon oxide and bismuth oxide.

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Номер записи: 75
11-04-2019 дата публикации

Electrochemical cell

Номер: US20190109328A1
Автор: Makoto Ohmori, Shinji Fujisaki, Takashi Ryu
Принадлежит: NGK Insulators Ltd

The electrochemical cell has an anode, a cathode, and a solid electrolyte layer. The cathode contains a perovskite oxide expressed by the general formula ABO 3 and including at least one of Sr and La at the A site as a main component. The solid electrolyte layer is disposed between the anode and the cathode. The cathode includes a solid electrolyte layer-side region within 3 μm from a surface of the solid electrolyte layer side. The solid electrolyte layer-side region includes a main phase which is configured by the perovskite oxide and a second phase which is configured by CO 3 O 4 and (Co, Fe) 3 O 4 . An occupied surface area ratio of the second phase in a cross section of the solid electrolyte layer-side region is less than or equal to 10.5%.

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Номер записи: 76
28-04-2016 дата публикации

Increased resonant frequency potassium-doped hexagonal ferrite

Номер: US20160118170A1
Автор: Michael David Hill
Принадлежит: Skyworks Solutions Inc

Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase strontium hexagonal ferrite material. In some embodiments, strontium can be substituted out for a trivalent or tetravalent ion composition including potassium, thereby providing for advantageous properties.

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Номер записи: 77
17-07-2014 дата публикации

POLYCRYSTALLINE METAL OXIDE, METHODS OF MANUFACTURE THEREOF, AND ARTICLES COMPRISING THE SAME

Номер: US20140197357A1
Автор: Ofer David, Pullen Adrian W., Sriamulu Suresh
Принадлежит: TIAX LLC

A particle, including: a plurality of crystallites including a first composition having a layered α-NaFeO-type structure and including lithium in an amount of about 0.1 to about 1.3 moles, per mole of the first composition, nickel in an amount of about 0.1 to about 0.79 mole, per mole of the first composition, cobalt in an amount of 0 to about 0.5 mole, per mole of the first composition, and oxygen in an amount of about 1.7 to about 2.3 moles, per mole of the first composition; and a grain boundary between adjacent crystallites of the plurality of crystallites and including a second composition having the layered α-NaFeO-type structure, a cubic structure, or a combination thereof, wherein a concentration of cobalt in the grain boundary is greater than a concentration of cobalt in the crystallites. 1. A particle , comprising:{'sub': '2', 'a plurality of crystallites comprising a first composition having a layered α-NaFeO-type structure and comprising'}lithium,nickel, andoxygen; and{'sub': '2', 'a grain boundary between adjacent crystallites of the plurality of crystallites and comprising a second composition having the layered α-NaFeO-type structure, a cubic structure, or a combination thereof,'}wherein a concentration of cobalt in the grain boundary is greater than a concentration of cobalt in the crystallites.2. The particle of claim 1 , wherein the grain boundary is substantially rectilinear in cross-section.3. The particle of claim 1 , wherein a direction of a surface of the grain boundary is different than a direction of a tangent of a nearest outer surface of the particle.4. The particle of claim 1 , wherein the particle comprises a first grain boundary and a second grain boundary claim 1 , wherein the first grain boundary and the second grain boundary are each directly on a same crystallite of the plurality of crystallites claim 1 , and wherein the first grain boundary and second grain boundary intersect at an angle determined by a crystal structure of the ...

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Номер записи: 78
13-05-2021 дата публикации

SINTERED NI FERRITE BODY, COIL DEVICE, AND METHOD FOR PRODUCING SINTERED NI FERRITE BODY

Номер: US20210139377A1
Автор: KOYUHARA Norikazu, TADA Tomoyuki, Tanaka Satoru
Принадлежит: HITACHI METALS, LTD.

A sintered Ni ferrite body having a composition comprising, calculated as oxide, 47.0-48.3% by mol of FeO, 14.5% or more and less than 25% by mol of ZnO, 8.2-10.0% by mol of CuO, and more than 0.6% and 2.5% or less by mol of CoO, the balance being NiO and inevitable impurities, and having an average crystal grain size of more than 2.5 μm and less than 5.5 μm. 1. A sintered Ni ferrite body having a composition comprising , calculated as oxide , 47.0-48.3% by mol of FeO , 14.5% or more and less than 25% by mol of ZnO , 8.2-10.0% by mol of CuO , and more than 0.6% and 2.5% or less by mol of CoO , the balance being NiO and inevitable impurities , and having an average crystal grain size of more than 2.5 μm and less than 5.5 μm.2. The sintered Ni ferrite body according to claim 1 , wherein less than 4 parts by mass of Sn calculated as SnO claim 1 , based on 100 parts by mass of the total amount of FeO claim 1 , ZnO claim 1 , CuO claim 1 , CoO and NiO claim 1 , is contained.3. The sintered Ni ferrite body according to claim 1 , which has a composition comprising claim 1 , calculated as oxide claim 1 , 47.3-48.2% by mol of FeO claim 1 , 14.8-24.8% by mol of ZnO claim 1 , 8.3-9.5% by mol of CuO claim 1 , and 0.65-2.4% by mol of CoO claim 1 , the balance being NiO and inevitable impurities.4. The sintered Ni ferrite body according to claim 1 , wherein said sintered Ni ferrite body has a density of 4.85 g/cmor more.5. The sintered Ni ferrite body according to claim 1 , wherein said sintered Ni ferrite body has core loss Pcv20 of 1800 kW/mor less at 20° C. and core loss Pcv100 of 3000 W/mor less at 100° C. claim 1 , at a frequency of 5 MHz and at an exciting magnetic flux density of 20 mT.6. The sintered Ni ferrite body according to claim 5 , wherein the minimum temperature of core loss Pcv is less than 80° C.7. The sintered Ni ferrite body according to claim 5 , wherein a core loss change ratio Ps calculated by the following formula (1):{'br': None, 'i': Ps', 'Pcv', 'Pcv', ' ...

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Номер записи: 79
27-04-2017 дата публикации

FERRITE SINTERED PLATE AND FERRITE SINTERED SHEET

Номер: US20170117075A1
Автор: Honda Shingo, KAWATO Kazuyoshi, KURUMADA Mitsunori, OKANO Yoji, SADAI Makoto, Yoshida Akihiro
Принадлежит:

The present invention relates to a ferrite sintered plate having a composition comprising 47 to 50 mol % of FeO, 7 to 26 mol % of NiO, 13 to 36 mol % of ZnO, 7 to 12 mol % of CuO and 0 to 1.5 mol % of CoO, as calculated in terms of the respective oxides, in which the ferrite sintered plate has a volume resistivity of 1×10to 1×10·cm and a thickness of 10 to 60 μm; and a ferrite sintered sheet comprising the ferrite sintered plate on a surface of which a groove or grooves are formed, and an adhesive layer and/or a protective layer formed on the ferrite sintered plate, in which the ferrite sintered sheet has a magnetic permeability at 500 kHz a real part of which is 120 to 800 and an imaginary part of which is 0 to 30, and a product (μm) of the real part of the magnetic permeability at 500 kHz of the ferrite sintered sheet and a thickness of the ferrite sintered plate is 5000 to 48000. The ferrite sintered plate and the ferrite sintered sheet according to the present invention have a high volume resistivity as well as a large μ′ value and a small μ″ value of a magnetic permeability thereof, and therefore can be suitably used as a shielding plate in a digitizer system. 1. A ferrite sintered plate which has a composition comprising 47 to 50 mol % of FeO , 7.0 to 26 mol % of NiO , 13 to 36 mol % of ZnO , 7.0 to 12 mol % of CuO and 0 to 1.5 mol % of CoO , as calculated in terms of the respective oxides , which has a volume resistivity of 1×10to 1×10Ωcm and which has a thickness of 10 to 60 μm.2. The ferrite sintered plate according to claim 1 , wherein the ferrite sintered plate has a magnetic permeability at 500 kHz a real part of which is 160 to 1200 and an imaginary part of which is 0 to 90.3. The ferrite sintered plate according to claim 1 , wherein a product (μm) of the real part of the magnetic permeability at 500 kHz of the ferrite sintered plate and a thickness of the ferrite sintered plate is 7500 to 72000.4. The ferrite sintered plate according to claim 1 , ...

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Номер записи: 80
03-05-2018 дата публикации

METHOD FOR SYNTHESIZING CERAMIC COMPOSITE POWDER AND CERAMIC COMPOSITE POWDER

Номер: US20180118626A1
Автор: CHEN DAMING, OUYANG XIAOPING, ZHANG Yongli
Принадлежит: XiangTan QUFO Technology Material CO., Ltd

The embodiments of the present invention disclose a method for synthesizing ceramic composite powder and ceramic composite powder, pertaining to the technical field of inorganic non-metallic materials. Among them, the method includes preparing an aqueous slurry of ceramic raw materials, the aqueous slurry including ceramic raw material, water and low polymerization degree organometallic copolymer, the ceramic raw material including at least two components; adding a crosslinking coagulant into the aqueous slurry to obtain a gel; dehydrating and drying the gel to obtain the dried gel; heating the dried gel to the synthesizing temperature of the ceramic composite powder and conducting the heat preservation to obtain ceramic composite powder or ceramic composite base powder; conducting secondary doping on ceramic composite base powder to obtain the ceramic composite powder. The multi-component ceramic composite powder prepared by the embodiments of the present invention has uniformly dispersed each component and low synthesizing temperature. 1. A method for synthesizing ceramic composite powder , comprising:preparing an aqueous slurry of ceramic raw materials, the aqueous slurry comprising ceramic raw material, water and low polymerization degree organometallic copolymer, the ceramic raw material comprising at least two components;adding a crosslinking coagulant into the aqueous slurry to obtain a gel;dehydrating and drying the gel to obtain the dried gel;heating the dried gel to the synthesizing temperature of the ceramic composite powder and conducting the heat preservation to obtain ceramic composite powder or ceramic composite base powder;conducting secondary doping on ceramic composite base powder to obtain the ceramic composite powder.2. The synthesizing method according to claim 1 , wherein the ceramic raw material comprises carbonate claim 1 , oxalate claim 1 , acetate claim 1 , hydroxide claim 1 , oxide and/or minor additive elements claim 1 , the minor ...

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Номер записи: 81
03-05-2018 дата публикации

ULTRA-HIGH DIELECTRIC CONSTANT GARNET

Номер: US20180118627A1
Автор: Cruickshank David Bowie, Hill Michael David
Принадлежит:

Disclosed are embodiments of synthetic garnet materials for use in radiofrequency applications. In some embodiments, increased amounts of bismuth can be added into specific sites in the crystal structure of the synthetic garnet in order to boost certain properties, such as the dielectric constant and magnetization. Accordingly, embodiments of the disclosed materials can be used in high frequency applications, such as in base station antennas. 1. (canceled)2. An ultra-high dielectric constant garnet comprising:an yttrium iron garnet crystal structure with at least some yttrium being substituted out for bismuth, at least some yttrium being substituted by gadolinium, lanthanum, praseodymium, neodymium, samarium, dysprosium, ytterbium, or holmium, and charge balance achieved by calcium or zirconium substituting for at least some yttrium.3. The ultra-high dielectric constant garnet of wherein the ultra-high dielectric constant garnet has a dielectric constant of at least 40.4. The ultra-high dielectric constant garnet of wherein the ultra-high dielectric constant garnet does not contain sillenite.5. The ultra-high dielectric constant garnet of further including hafnium or titanium incorporated into octahedral sites of the yttrium iron garnet crystal structure.6. The ultra-high dielectric constant garnet of wherein the ultra-high dielectric constant garnet contains no yttrium.7. The ultra-high dielectric constant garnet of wherein the ultra-high dielectric constant garnet has a magnetization of 1600 4πMor above.8. The ultra-high dielectric constant garnet of wherein at least some yttrium is substituted by gadolinium.9. A method of producing an ultra-high dielectric constant garnet claim 2 , the method comprising:providing an yttrium iron garnet structure;substituting out at least some yttrium for bismuth;substituting out at least some yttrium for gadolinium, lanthanum, praseodymium, neodymium, samarium, dysprosium, ytterbium, or holmium; andcharge balancing by ...

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Номер записи: 82
09-04-2020 дата публикации

LAMINATED ELECTRONIC COMPONENT

Номер: US20200111608A1
Автор: KAWABATA Ryohei, SATO Mitsuhiro, TAKAHASHI Daisuke
Принадлежит: MURATA MANUFACTURING CO., LTD.

A laminated electronic component includes a body including a magnetic layer containing magnetic particles; a coil provided within the body; and outer electrodes provided on a bottom surface of the body and each electrically connected to any one of end portions of the coil. The coil is formed by connecting a plurality of coil conductors stacked within the body, and the body includes a non-magnetic layer present between one of the outer electrodes and one of the coil conductors opposing the one of the outer electrodes. 1. A laminated electronic component comprising:a body including a magnetic layer containing magnetic particles;a coil provided within the body; andouter electrodes provided on a bottom surface of the body and each electrically connected to any one of end portions of the coil, whereinthe coil is formed by connecting a plurality of coil conductors stacked within the body, andthe body includes a non-magnetic layer present between one of the outer electrodes and one of the coil conductors opposing the one of the outer electrodes.2. The laminated electronic component according to claim 1 , wherein the non-magnetic layer is in contact with the one of the coil conductors opposing the one of the outer electrodes.3. The laminated electronic component according to claim 1 , wherein the non-magnetic layer is in contact with the one of the outer electrodes.4. The laminated electronic component according to claim 1 , whereinin a cross-section perpendicular to the bottom surface of the body, a side surface of each outer electrode has a recess-shaped wedge portion, and a part of the body enters the wedge portion, andat the bottom surface of the body, at least a part of a surface of each outer electrode is located outward of the bottom surface of the body.5. The laminated electronic component according to claim 1 , wherein the non-magnetic layer contains a Zn—Cu ferrite material.6. The laminated electronic component according to claim 1 , wherein the body further ...

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Номер записи: 83
09-04-2020 дата публикации

MULTILAYER COIL ARRAY

Номер: US20200111609A1
Автор: KAWABATA Ryohei, SATO Mitsuhiro
Принадлежит: MURATA MANUFACTURING CO., LTD.

A multilayer coil array includes an element body including a magnetic layer; first and second built-in coils; and first to fourth outer electrodes connected to the first and second coils. A non-magnetic layer is provided between the first and second coils. The first and second coils are each formed by a plurality of coil conductors being connected to each other. At least one out of a coil conductor of the first coil that is closest to the second coil among the plurality of coil conductors of the first coil and a coil conductor of the second coil that is closest to the first coil among the plurality of coil conductors of the second coil contacts the non-magnetic layer. The length of a coil conductor layer that contacts the non-magnetic layer of the coil conductor contacting the non-magnetic layer is different from the length of the other coil conductor layers. 1. A multilayer coil array comprising:an element body that includes a magnetic layer containing magnetic particles;a first coil and a second coil that are built into the element body;a first outer electrode, a second outer electrode, a third outer electrode, and a fourth outer electrode that are provided on a surface of the element body and are respectively electrically connected to end portions of the first coil and the second coil; anda non-magnetic layer between the first coil and the second coil,whereinthe first coil and the second coil are each formed by a plurality of coil conductors being connected to each other in a stacking direction, a coil conductor of the first coil that is closest to the second coil among the plurality of coil conductors of the first coil, and', 'a coil conductor of the second coil that is closest to the first coil among the plurality of coil conductors of the second coil contacts the non-magnetic layer, and, 'at least one of'}a length of the coil conductor that contacts the non-magnetic layer is different from lengths of the other coil conductors.2. The multilayer coil array ...

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Номер записи: 84
13-05-2021 дата публикации

PROCESS FOR ANNEALING A POLED CERAMIC

Номер: US20210143318A1
Автор: Alistair, BELL Andrew John, COMYN Timothy Paul
Принадлежит: Ionix Advanced Technologies Ltd

The present invention relates to a process for annealing a poled ceramic over a heating period during which the temperature is raised incrementally to “lock-in” desirable high temperature characteristics. 1. A process for annealing a poled ceramic which comprises (or consists essentially of) a solid solution with a perovskite structure , wherein the process comprises:(A) heating the poled ceramic over a heating period from ambient temperature to a final temperature, wherein during at least a final part of the heating period the temperature is raised incrementally; and(B) cooling the poled ceramic from the final temperature to ambient temperature to form an annealed poled ceramic.2. A process as claimed in wherein the final part of the heating period commences when the temperature is within 200° C. or more of the final temperature.3. A process as claimed in wherein during at least the final part of the heating period claim 1 , the temperature is raised at an average heating rate of 8° C./hour or less.4. A process as claimed in further comprising:(A1) causing the poled ceramic to dwell for an intermediate period at an intermediate temperature between ambient temperature and the final temperature.5. A process as claimed in further comprising:(A2) causing the poled ceramic to dwell for an additional heating period at the final temperature.6. A process as claimed in wherein the solid solution is lead-containing.7. A process as claimed in any of wherein the solid solution is lead-free.9. A process as claimed in wherein the solid solution is of formula (II):{'br': None, 'i': x', 'y', 'z, 'sub': a', '1-a', '3', '3', '3, '(BiK)TiO-BiFeO-PbTiO\u2003\u2003(II).'}10. A process as claimed in wherein 0 Подробнее

Номер записи: 85
13-05-2021 дата публикации

COIL DEVICE AND ANTENNA

Номер: US20210143550A1
Автор: TADA Tomoyuki, Tanaka Satoru, Yamamoto Hiroki
Принадлежит: HITACHI METALS, LTD.

A coil device comprising a coil, and a ferrite core arranged in a hollow portion of the coil, and a resin covering them; the ferrite core being a Ni ferrite core having initial permeability μi of 450 or more at a frequency of 100 kHz and a temperature of 20° C., and an average crystal grain size of 5-9 μm, both of temperature-dependent inductance change ratios TLa and TLb and stress-dependent inductance change ratios PLa and PLb being −0.6% to +0.6%, and both of the sum of TLa and PLa and the sum of TLb and PLb being more than −1.0% and less than +1.0%; and an antenna comprising it. 2. The coil device according to claim 1 , wherein said Ni ferrite core has a composition comprising 47.5-48.4% by mol of FeO claim 1 , 25.0-30.5% by mol of ZnO claim 1 , and 6.0-11.5% by mol of CuO claim 1 , the balance being NiO and inevitable impurities.3. An antenna comprising the coil device recited in . The present invention relates to a resin-molded coil device and an antenna comprising it, for example, to a coil device used in keyless entry systems using electronic keys, electronic theft protection apparatuses (immobilizers), and tire pressure-monitoring systems (TPMS) for automobiles, and an antenna.Under the requirement of higher convenience and safety, keyless entry systems, TPMS (tire pressure-monitoring systems), etc. have become widely used in intelligentized automobiles. In TPMS, for example, a sensor unit for measuring air pressure is attached to each tire mounted to a vehicle, to conduct wireless communications of vehicle-identifying information and drive/stop control information of the sensor unit, etc., between a control unit in the vehicle and an antenna in the air pressure sensor unit. The wireless communications are conducted using, for example, an LF wave having a frequency of 125 kHz as a carrier wave. The antenna may have a function of transmitting power for driving the circuit.shows an example of the structures of antenna circuits used in such systems. The ...

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Номер записи: 86
04-05-2017 дата публикации

Modified bismuth-substituted synthetic garnets for electronic applications

Номер: US20170121849A1
Автор: Cruickshank David Bowie, Hill Michael David
Принадлежит:

Embodiments disclosed herein include methods of modifying synthetic garnets used in RF applications to reduce or eliminate Yttrium or other rare earth metals in the garnets without adversely affecting the magnetic properties of the material. Some embodiments include substituting Bismuth for some of the Yttrium on the dodecahedral sites and introducing one or more high valency ions to the octahedral and tetrahedral sites. Calcium may also be added to the dodecahedral sites for valency compensation induced by the high valency ions, which could effectively displace all or most of the Yttrium (Y) in microwave device garnets. The modified synthetic garnets with substituted Yttrium (Y) can be used in various microwave magnetic devices such as circulators, isolators and resonators. 1. (canceled)2. A modified synthetic garnet having a composition represented by the formula BiYCaZrFeO , x being between 0.5 and 1.0 , bismuth being substituted for yttrium on a dodecahedral site , zirconium being substituted for iron on an octahedral site , and calcium being added to a dodecahedral site to replace yttrium and balance charges with zirconium.3. The modified synthetic garnet of wherein x is between 0.6 and 0.8.4. The modified synthetic garnet of wherein x is 0.5.5. A method of manufacturing a bismuth-modified synthetic garnet claim 3 , the method comprising:providing a material include oxides, carbonates, or a combination thereof;{'sub': x', '3-x-0.35', '0.35', '0.35', '4.65', '12, 'forming a composition represented by the formula BiYCaZrFeO, x being between 0.5 and 1.0, bismuth being substituted for yttrium on a dodecahedral site, zirconium being substituted for iron on an octahedral site, and calcium being added to the dodecahedral site to replace yttrium and balance charges with zirconium.'}6. The method of wherein x is between 0.6 and 0.8.7. The method of wherein x is 0.5.8. The method of further including forming an electronic device from the composition.9. The method of ...

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Номер записи: 87
04-05-2017 дата публикации

INORGANIC FIBER

Номер: US20170121861A1
Автор: ANDREJCAK Michael J., ZOITOS Bruce K.
Принадлежит:

An inorganic fiber containing silica and magnesia as the major fiber components and which further includes an intended iron oxide additive to improve the dimensional stability of the fiber. The inorganic fiber exhibits good thermal insulation performance at 1400° C. and greater, retains mechanical integrity after exposure to the use temperature, and which remains non-durable in physiological fluids. Also provided are thermal insulation product forms comprising a plurality of the inorganic fibers, methods of preparing the inorganic fiber and of thermally insulating articles using thermal insulation prepared from a plurality of the inorganic fibers. 1. An inorganic fiber comprising a fiberization product of about 70 weight percent or greater silica , magnesia , and greater than 5 to about 10 weight percent iron oxide , measured as FeO , wherein said inorganic fiber exhibits a shrinkage of 10% or less at 1400° C. for 24 hours.2. The inorganic fiber of claim 1 , wherein said inorganic fiber has an average diameter of greater than 4 microns.3. The inorganic fiber of claim 2 , wherein said inorganic fiber exhibits a shrinkage of 5% or less at 1400° C. for 24 hours.4. The inorganic fiber of claim 3 , wherein said inorganic fiber exhibits a shrinkage of 4% or less at 1400° C. for 24 hours.5. The inorganic fiber of claim 1 , wherein said inorganic fiber comprises the fiberization product of about 70 to about 80 weight percent silica claim 1 , about 15 to less than 25 weight percent magnesia claim 1 , and greater than 5 to about 10 weight percent iron oxide claim 1 , measured as FeO.6. The inorganic fiber of claim 5 , wherein said inorganic fiber comprises the fiberization product of about 70 to about 80 weight percent silica claim 5 , about 15 to about 25 weight percent magnesia claim 5 , greater than 5 to about 10 weight percent iron oxide claim 5 , measured as FeO claim 5 , and 1 weight percent or less calcia.7. The inorganic fiber of claim 5 , wherein said inorganic fiber ...

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Номер записи: 88
04-05-2017 дата публикации

INORGANIC FIBER WITH IMPROVED SHRINKAGE AND STRENGTH

Номер: US20170121862A1
Автор: ANDREJCAK Michael J., HAMILTON Jason M., ZHAO Donghui, ZOITOS Bruce K.
Принадлежит:

An inorganic fiber containing silica and magnesia as the major fiber components which further includes an intended strontium oxide additive to improve the thermal stability of the fiber. The inorganic fiber exhibits good thermal performance at 1260° C. and greater for 24 hours or more, retains mechanical integrity after exposure to the use temperature, and exhibits low biopersistence in physiological fluids. Also provided are thermal insulation product forms, methods of preparing the inorganic fiber and of thermally insulating articles using thermal insulation prepared from a plurality of the inorganic fibers. 1. An inorganic fiber comprising a fiberization product of about 65 to less than 70 weight percent silica , about 14 to about 35 weight percent magnesia , and greater than 0 to about 5 weight percent strontium oxide.2. The inorganic fiber of claim 1 , wherein said inorganic fiber comprises the fiberization product of about 65 to less than 70 weight percent silica claim 1 , about 14 to about 35 weight percent magnesia claim 1 , and about 1 to about 5 weight percent strontium oxide.3. The inorganic fiber of claim 1 , wherein said inorganic fiber comprises the fiberization product of about 65 to less than 70 weight percent silica claim 1 , about 14 to about 35 weight percent magnesia claim 1 , and about 2 to about 5 weight percent strontium oxide.4. The inorganic fiber of claim 1 , wherein said inorganic fiber comprises the fiberization product of about 65 to less than 70 weight percent silica claim 1 , about 14 to about 35 weight percent magnesia claim 1 , and about 3 to about 5 weight percent strontium oxide.5. The inorganic fiber of claim 1 , wherein said inorganic fiber comprises the fiberization product of about 65 to less than 70 weight percent silica claim 1 , about 14 to about 35 weight percent magnesia claim 1 , and about 4 to about 5 weight percent strontium oxide.6. The inorganic fiber of claim 1 , wherein said inorganic fiber comprises greater than 0 ...

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Номер записи: 89
14-05-2015 дата публикации

Materials, devices and methods related to below-resonance radio-frequency circulators and isolators

Номер: US20150130550A1
Автор: David Bowie Cruickshank, Iain Alexander MACFARLANE, Michael David Hill
Принадлежит: Skyworks Solutions Inc

Materials, devices and methods related to below-resonance radio-frequency (RF) circulators and isolators. In some embodiments, a circulator can include a conductor having a plurality of signal ports, and one or more magnets configured to provide a magnetic field. The circulator can further include one or more ferrite disks implemented relative to the conductor and the one or more magnets so that an RF signal can be routed selectively among the signal ports due to the magnetic field. Each of the one or more ferrite disks can include synthetic garnet material having dodecahedral sites, octahedral sites and tetrahedral sites, with bismuth (Bi) occupying at least some of the dodecahedral sites, and aluminum (Al) occupying at least some of the tetrahedral sites. Such synthetic garnet material can be represented by a formula Y 3-x-2y−z Bi x Ca 2y+z Fe 5-y-z-a V y Zr z Al a O 12 . In some embodiments, x≦1.4, y≦0.7, z≦0.7, and a≦0.75.

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Номер записи: 90
25-04-2019 дата публикации

FERRITE MAGNET

Номер: US20190122792A1
Автор: NAGAOKA Junnichi, TAGUCHI Hitoshi
Принадлежит: TDK Corporation

This ferrite magnet has a magnetoplumbite structure and is characterized in that, when representing the composition ratios of the total of each metal element A, R, Fe and Me with expression (1) AR(FeMe), the Fe content (m) in the ferrite magnet is greater than 0.1 mass % and less than 5.4 mass % (in expression (1), A is at least one element selected from Sr, Ba, Ca and Pb; R is at least one element selected from the rare-earth elements (including Y) and Bi, and includes at least La, and Me is Co, or Co and Zn). The invention makes it possible to achieve a ferrite magnet with increased Br. 1. A ferrite magnet comprising a magnetoplumbite structure , wherein{'sub': 1-x', 'x', '12-y', 'y', 'z, 'a constitutional proportion of metal elements of A, R, Fe, and Me is represented by a formula (1) of AR(FeMe), where A is at least one element selected from Sr, Ba, Ca, and Pb, R is at least one element selected from rare earth elements (including Y) and Bi and R at least includes La, and Me is Co or Co and Zn,'} [{'br': None, 'i': 'x≤', '0.60≤0.84\u2003\u2003(2);'}, {'br': None, 'i': 'y≤', '0.30≤0.60\u2003\u2003(3);'}, {'br': None, 'i': 'z<', '0.80≤1.10\u2003\u2003(4);'}, {'br': None, 'i': 'x/yz<', '1.60≤4.00\u2003\u2003(5), and'}], 'x, y, and z of the formula (1) satisfy the following formulae (2), (3), (4), and (5){'sup': '2+', 'a Fe content of the ferrite magnet is more than 0.1 mass % and less than 5.4 mass %.'}2. The ferrite magnet according to claim 1 , further comprising Si claim 1 , wherein a Si content is more than 0.002 mass % and less than 0.15 mass % in terms of SiO. The present invention relates to a ferrite magnet and particularly relates to improvement in residual magnetic flux density (Br) of the ferrite magnet.Hexagonal based M-type (magnetoplumbite type) Sr ferrite or Ba ferrite is known as a material of a permanent magnet made of an oxide. A ferrite magnet made of these ferrites is used as a permanent magnet in the form of a sintered magnet or a bonded magnet ...

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Номер записи: 91
11-05-2017 дата публикации

Compact metal oxide block and related manufacturing method

Номер: US20170129817A1
Автор: Christian COENRAETS, Christophe Dupont, Laurent Kirchhoff
Принадлежит: Eurotab SA

The invention relates to a composition consisting of a mixture of one or more metal oxides having the formula MxOyUi, in which M is a metal atom selected from among iron, aluminum, titanium, manganese, zinc, copper, zirconium, nickel, and lead, O is an oxygen atom, U is an impurity, and x, y, and i are mole fractions comprised between 0 and 1, with x+y>80%, said composition taking the form of a three-dimensional compacted tablet having an apparent density greater than or equal to 2, an apparent porosity comprised between 3% and 40%, and a diametral breaking strength greater than or equal to 250 kPa. The invention also relates to a method for manufacturing a compacted tablet comprising one or more metal oxides

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Номер записи: 92
11-05-2017 дата публикации

Electrode Material and Use Thereof for the Manufacture of an Inert Anode

Номер: US20170130351A1
Автор: Barthelemy Christian, BOUVET Sylvie, Gabriel Armand, LAURENT Véronique, MARMOTTANT Ariane
Принадлежит:

The invention relates to an electrode material, preferably an inert anode material comprising at least a metal core and a cermet material, characterized in that: 1. Electrode material comprising at least a metal core and a cermet material , said metal core being at least covered by said cermet material and said cermet material forming an external layer of said electrode material which is designed to be in contact with an electrolysis bath , [ 40%≦Ni≦85%, preferably 55%≦Ni≦80%,', '15%≦Fe≦60%, preferably 20%≦Fe≦45%,, 'said metal core contains at least one nickel (Ni) and iron (Fe) alloy, the proportions by weight of Ni and Fe being as follows, [{'sub': x', 'y', 'z', '4, '45 to 80% of a nickel ferrite oxide phase of composition NiFeMOwith 0.60 ≦x≦0.90; 1.90≦y≦2.40; 0.00≦z≦0.20 and M being a metal selected from aluminum (Al), cobalt (Co), chromium (Cr), manganese (Mn), titanium (Ti), zirconium (Zr), tin (Sn), vanadium (V), niobium (Nb), tantalum (Ta) and hafnium (Hf) or being a combination of these metals,'}, '15 to 45% of a metallic phase comprising at least one alloy of nickel and copper., 'said cermet material comprises at least as percentages by weight], 'characterized in that2. Electrode material according to claim 1 , characterized in that the metal core of the electrode material further includes copper (Cu) in the following proportions by weight: 5%≦Cu≦40%.3. Electrode material according to claim 2 , characterized in that the proportions by weight of the metal core are:40%≦Ni≦70%;20%≦Fe≦45%;7%≦Cu≦20%.4. Electrode material according to claim 1 , characterized in that the metal core of the electrode material further comprises at least one metal A claim 1 , said metal A being selected from chromium (Cr) claim 1 , manganese (Mn) claim 1 , cobalt (Co) and molybdenum (Mo) claim 1 , with the proportion by weight of metal A in the metal core being as follows: 0.5%≦A≦30%.5. Electrode material according to claim 4 , characterized in that the proportions by weight of the ...

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Номер записи: 93
02-05-2019 дата публикации

SINTERED PRODUCT WITH HIGH IRON OXIDE CONTENT

Номер: US20190127622A1
Автор: His Christian, Villermaux Franceline
Принадлежит:

A sintered material exhibiting the following chemical composition, as percentages by weight: iron oxide(s), expressed in the FeOform, ≥85%, CaO: 0.1%-6%, SiO: 0.1%-6%, 0.05% ≤TiO, 0≤AlO, TiO+AlO≤3%, and constituents other than iron oxides, CaO, SiO, TiOand AlO: ≤5%. The CaO/SiOratio by weight is between 0.2 and 7. The TiO/CaO ratio by weight is between 0.2 and 1.5. 1. A sintered material exhibiting the following chemical composition , as percentages by weight:{'sub': 2', '3, 'iron oxide(s), expressed in the FeOform, 85%'}CaO: 0.1%-6%, and{'sub': '2', 'SiO: 0.1%-6%, and'}{'sub': '2', '0.05%≤TiO, and'}{'sub': 2', '3, '0≤AlO, and'}{'sub': 2', '2', '3, 'TiO+AlO≤3%, and'}{'sub': 2', '2', '2', '3', '2', '2, 'constituents other than iron oxides, CaO, SiO, TiOand AlO: ≤5%, the CaO/SiOratio by weight being between 0.2 and 7, the TiO/CaO ratio by weight being between 0.2 and 1.5.'}2. The material as claimed in claim 1 , exhibiting a relative density of greater than or equal to 90%.3. The material as claimed claim 1 , exhibiting a mean grain size of less than 100 μm and greater than 0.5 μm.4. The material as claimed in claim 1 , exhibiting:{'sub': 2', '3, 'a content of iron oxide, expressed in the FeOform, of greater than 88%; and/or'}a content of CaO of greater than 0.2% and less than 4%; and/or{'sub': '2', 'a content of SiOof greater than 0.2% and less than 6%; and/or'}{'sub': '2', 'a content of TiOof greater than 0.1% and less than 3%; and/or'}{'sub': 2', '3, 'a content of AlOof greater than 0.1% and less than 2.5%; and/or'}{'sub': 2', '2', '3, 'a total content of TiO+AlOof greater than 0.2% and less than 2.5%; and/or'}{'sub': '2', 'a CaO/SiOratio by weight of greater than 0.4 and less than 6.5; and/or'}{'sub': '2', 'a TiO/CaO ratio by weight of greater than 0.3 and less than 1.4; and/or'}{'sub': 2', '2, 'a content of constituents other than iron oxides, CaO, SiO, TiOand'}{'sub': 2', '3, 'AlOof less than 4%; and/or'}a content of manganese oxide, expressed in the MnO form, ...

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Номер записи: 94
10-05-2018 дата публикации

RADIOFREQUENCY AND OTHER ELECTRONIC DEVICES FORMED FROM ENHANCED RESONANT FREQUENCY HEXAFERRITE MATERIALS

Номер: US20180131065A1
Автор: Hill Michael David
Принадлежит:

Radiofrequency and other electronic devices can be formed from textured hexaferrite materials, such as Z-phase barium cobalt ferrite BaCoFeO(CoZ) having enhanced resonant frequency. The textured hexaferrite material can be formed by sintering fine grain hexaferrite powder at a lower temperature than conventional firing temperatures to inhibit reduction of iron. The textured hexaferrite material can be used in radiofrequency devices such as circulators or telecommunications systems. 1. (canceled)2. An enhanced resonant frequency ferrite material comprising a Z-phase barium cobalt hexagonal ferrite material formed from a fine grain hexagonal ferrite powder having a surface area of greater than 8 m/g , the Z-phase barium cobalt hexagonal ferrite material having a resonant frequency peak at a higher frequency as compared to standard hexagonal ferrite powder having a surface area less than 3 m/g.3. The enhanced resonant frequency ferrite material of wherein zeta-milling is used to form the fine grain hexagonal ferrite powder.4. The enhanced resonant frequency ferrite material of wherein the fine grain hexagonal ferrite powder has an average particle size of between 300-600 nm.5. The enhanced resonant frequency ferrite material of wherein the fine grain hexagonal ferrite powder has a surface area of greater than about 15 m/g.6. The enhanced resonant frequency ferrite material of wherein the fine grain hexagonal ferrite powder has a surface area of between 8 and about 15 m/g.7. The enhanced resonant frequency ferrite material of wherein the Z-phase barium cobalt hexagonal ferrite material has the formula BaCoFeO.8. The enhanced resonant frequency ferrite material of wherein the barium cobalt hexagonal ferrite material has a grain size between about five micrometers and one millimeter in diameter.9. An enhanced resonant frequency ferrite material comprising a barium cobalt hexagonal ferrite material formed from fine grain hexagonal ferrite powder having a surface area of at ...

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Номер записи: 95
23-04-2020 дата публикации

MODIFIED NI-ZN FERRITES FOR RADIOFREQUENCY APPLICATIONS

Номер: US20200127367A1
Автор: Anderson Kelvin Mitchell, Cruickshank David Bowie, Hill Michael David
Принадлежит:

Embodiments disclosed herein relate to using cobalt (Co) to fine tune the magnetic properties, such as permeability and magnetic loss, of nickel-zinc ferrites to improve the material performance in electronic applications. The method comprises replacing nickel (Ni) with sufficient Cosuch that the relaxation peak associated with the Cosubstitution and the relaxation peak associated with the nickel to zinc (Ni/Zn) ratio are into near coincidence. When the relaxation peaks overlap, the material permeability can be substantially maximized and magnetic loss substantially minimized. The resulting materials are useful and provide superior performance particularly for devices operating at the 13.56 MHz ISM band. 1. (canceled)2. A fine-tuned nickel-zinc ferrite material comprising:{'sup': '2+', 'sub': 1-x-y', 'x', 'y', '2', '4, 'a base nickel-zinc ferrite material doped with cobalt (CO) to adjust a nickel to zinc ratio of the base nickel-zinc ferrite material thereby providing a Ni/Zn relaxation absorption peak at a desired frequency above a desired low magnetic loss frequency, the cobalt being doped into the base nickel-zinc ferrite material to a level where a cobalt dominated relaxation peak merges into a low frequency end of the Ni/Zn relaxation absorption peak, the fine-tuned nickel-zinc ferrite material being represented by the formula NiZnCoFeO, x being between 0.2 and 0.6, and y being between 0 and 0.2'}3. The fine-tuned nickel-zinc ferrite material of wherein the fine-tuned nickel-zinc ferrite material has a composition NiCoZnFeO.4. The fine-tuned nickel-zinc ferrite material of wherein the base nickel-zinc ferrite material has a composition NiZnFeO.5. The fine-tuned nickel-zinc ferrite material of wherein the fine-tuned nickel-zinc ferrite material has a permeability in excess of 100.6. The fine-tuned nickel-zinc ferrite material of wherein the desired frequency is about 100 MHz.7. A radiofrequency component comprising:{'sup': '2+', 'sub': 1-x-y', 'x', 'y', '2', '4, ...

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Номер записи: 96
18-05-2017 дата публикации

CERAMIC ELECTRONIC COMPONENT AND METHOD FOR PRODUCING CERAMIC ELECTRONIC COMPONENT

Номер: US20170140871A1
Автор: NAKAMURA Akihiro, Nomiya Yuko, YAMAMOTO Atsushi
Принадлежит:

A ceramic electronic component includes a ferrite material magnetic body part and a Cu conductive part, the ferrite containing 20 to 48% trivalent Fe in terms of FeOand divalent Ni. The ferrite can contain Mn so that it is less than 50% of the total of Fe and Mn in terms of MnOand FeO. The magnetic and conductive parts are co-fired at a pressure not exceeding the equilibrium oxygen partial pressure of Cu—CuO thereby ensuring insulating performance and favorable electrical characteristics. 1. A method for producing a ceramic electronic component , the method comprising:{'sub': 2', '3', '2', '3', '2', '3', '2', '3, 'providing a laminated body comprising a stack of a plurality of ceramic green sheets having a conductive film thereon in which at least one conductive film contains Cu as its main constituent and is sandwiched between a pair of green sheets, wherein at least one green sheet comprises a calcined powder comprising trivalent Fe and one or more divalent elements including at least divalent Ni, 20 to 48% of FeO, 0% to less than 50% of MnObased on a total amount of the MnOand the FeO; and'}{'sub': '2', 'firing the laminate body in a firing atmosphere at a pressure equal to or lower than the equilibrium oxygen partial pressure of Cu—CuO.'}2. The method for producing a ceramic electronic component according to claim 1 , the calcined powder has 25 to 47% of the FeO claim 1 , 2% or more to less than 50% of the MnObased on the total amount of the MnOand the FeO claim 1 , 10% or less of CuO claim 1 , and 33% or less of ZnO.3. The method for producing a ceramic electronic component according to claim 2 , wherein the calcined powder has 30 to 46% of the FeO claim 2 , at least 1% of the CuO claim 2 , and at least 6% of the ZnO.4. The method for producing a ceramic electronic component according to claim 1 , further comprising forming the laminated body by constructing a stack of a plurality of ceramic green sheets with the conductive film thereon. The present application ...

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Номер записи: 97
09-05-2019 дата публикации

Magnetic Materials with Ultrahigh Resistivity Intergrain Nanoparticles

Номер: US20190139687A1
Автор: Parisa Andalib, Vincent Harris, Yajie Chen
Принадлежит: Northeastern University Boston

A composite magnetic material has a plurality of grains having a magnetic ferrite phase, grain boundaries surrounding the grains, and a plurality of nanoparticles disposed at the grain boundaries. The nanoparticles of the composite material are both magnetic and electrically insulating, having a magnetic flux density of greater than about 100 mT and an electrical resistivity of at least about 10 8 Ohm-cm. Also provided is a method of making the composite material. The material is useful for making inductor cores of electronic devices.

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Номер записи: 98
31-05-2018 дата публикации

THERMALLY INSULATING MATERIAL

Номер: US20180148376A1
Автор: Ben-Nissan Besim
Принадлежит: BESIM PTY LTD

Provided are thermally insulating materials comprising 1 to 95 wt % ceramic oxide, 1 to 30 wt % inorganic binding agent, and treated at a temperature of less than about 1000° C.; processes for producing the insulating materials; and uses thereof. 1. A thermally insulating material comprising:(a) 1 to 80 wt % ceramic oxide;(b) 5 to 30 wt % inorganic binding agent; and(c) treated at a temperature of less than 1000° C.;wherein the insulating material does not comprise vermiculite.2. The insulating material according to claim 1 , comprising 5 to 80 wt % ceramic oxide and 10 to 80 wt % ceramic oxide.3. (canceled)4. The insulating material according to claim 1 , wherein the ceramic oxide has a mean particle size of less than 350 μm or a mean particle size from 30 to 300 μm.5. (canceled)6. The insulating material according to claim 1 , wherein the ceramic oxide is selected from the group consisting of sodium oxide claim 1 , magnesium oxide claim 1 , potassium oxide claim 1 , calcium oxide claim 1 , alumina claim 1 , silica claim 1 , sodium silicate claim 1 , magnesium silicate claim 1 , potassium silicate claim 1 , calcium silicate claim 1 , aluminium silicate claim 1 , zirconium silicate claim 1 , sodium aluminate claim 1 , magnesium aluminate claim 1 , calcium aluminate claim 1 , zirconium aluminate claim 1 , nickel aluminate claim 1 , sodium phosphate claim 1 , magnesium phosphate claim 1 , calcium phosphate claim 1 , aluminium phosphate claim 1 , ferrous oxide claim 1 , ferric oxide claim 1 , zirconium oxide claim 1 , magnesium zirconate claim 1 , calcium zirconate claim 1 , and combinations thereof.7. The insulating material according to claim 1 , comprising 5 to 30 wt % inorganic binding agent.8. (canceled)9. The insulating material according to claim 1 , wherein the inorganic binding agent has a mean particle size of less than 350 μm or a mean particle size from 30 to 300 μm.10. (canceled)11. The insulating material according to claim 1 , wherein the inorganic ...

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Номер записи: 99
02-06-2016 дата публикации

Ferrite and coil electronic component including the same

Номер: US20160155560A1
Автор: Byeong Cheol MOON, Young Il Lee
Принадлежит: Samsung Electro Mechanics Co Ltd

A coil electronic component includes a magnetic body containing a ferrite; and a coil part including a plurality of conductive patterns disposed in the magnetic body. The ferrite contains 48 to 50 mol % of iron oxide calculated in terms of Fe 2 O 3 , 8 to 12 mol % nickel oxide calculated in terms of NiO, 28 to 31 mol % zinc oxide calculated in terms of ZnO, and 7 to 13 mol % copper oxide calculated in terms of CuO.

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Номер записи: 100