ES2584849T3 - Procedimiento para la producción de un material cerámico transparente policristalino mediante un prensado cíclico - Google Patents
Procedimiento para la producción de un material cerámico transparente policristalino mediante un prensado cíclico Download PDFInfo
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- ES2584849T3 ES2584849T3 ES08020821.8T ES08020821T ES2584849T3 ES 2584849 T3 ES2584849 T3 ES 2584849T3 ES 08020821 T ES08020821 T ES 08020821T ES 2584849 T3 ES2584849 T3 ES 2584849T3
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/111—Fine ceramics
- C04B35/115—Translucent or transparent products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/44—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminates
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/44—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminates
- C04B35/443—Magnesium aluminate spinel
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/581—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on aluminium nitride
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
- C04B35/645—Pressure sintering
- C04B35/6455—Hot isostatic pressing
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/604—Pressing at temperatures other than sintering temperatures
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/608—Green bodies or pre-forms with well-defined density
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/661—Multi-step sintering
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/76—Crystal structural characteristics, e.g. symmetry
- C04B2235/762—Cubic symmetry, e.g. beta-SiC
- C04B2235/764—Garnet structure A3B2(CO4)3
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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- C04B2235/77—Density
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- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
- C04B2235/785—Submicron sized grains, i.e. from 0,1 to 1 micron
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9646—Optical properties
- C04B2235/9653—Translucent or transparent ceramics other than alumina
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Glanulating (AREA)
Abstract
Un procedimiento para la producción de un material cerámico transparente policristalino que tiene para la luz de una longitud de onda comprendida entre 600 y 650 nm una transmisión en línea real (RIT) de > 40 % del valor máximo teórico, caracterizado por que a partir de un polvo de partida, que tiene un tamaño de granos primarios de 5 < 500 nm, de manera preferida <= 300 nm, se produce, mediante granulación por atomización, mediante granulación en capa turbulenta o mediante revestimiento con partículas, un granulado de material cerámico con un tamaño de granos primarios de <= 500 nm, por que el granulado de material cerámico se reúne agentes coadyuvantes del prensado y/o agentes aglutinantes y/o agentes de deslizamiento, y se compacta mediante un prensado cíclico hasta una densidad en bruto de > 40 % de la densidad teórica (TD), comprendiendo el prensado cíclico un prensado uniaxial o una combinación de un prensado uniaxial y de un prensado isostático, y por que a continuación se efectúan, o bien una sinterización previa o un prensado isostático en caliente con sinterización o una sinterización convencional hasta la aparición de una porosidad cerrada, y un posterior prensado isostático en caliente del cuerpo en bruto prensado cíclicamente, de manera tal que el material cerámico transparente producido posea una densidad de > 99,8 % de la TD.
Description
Claims (1)
-
imagen1
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710059091 DE102007059091A1 (de) | 2007-12-07 | 2007-12-07 | Verfahren zur Herstellung einer polykristallinen transparenten Keramik |
DE102007059091 | 2007-12-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2584849T3 true ES2584849T3 (es) | 2016-09-29 |
Family
ID=40282451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES08020821.8T Active ES2584849T3 (es) | 2007-12-07 | 2008-12-01 | Procedimiento para la producción de un material cerámico transparente policristalino mediante un prensado cíclico |
Country Status (5)
Country | Link |
---|---|
EP (2) | EP2559677A3 (es) |
DE (1) | DE102007059091A1 (es) |
ES (1) | ES2584849T3 (es) |
PL (1) | PL2067754T3 (es) |
PT (1) | PT2067754T (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8485042B2 (en) | 2008-08-05 | 2013-07-16 | Endress + Hauser Gmbh + Co. Kg | Method for manufacturing an elastic body of Al2O3 ceramic, measuring membrane for a pressure sensor and pressure sensor with such a membrane |
DE102008064654A1 (de) * | 2008-08-05 | 2010-04-15 | Endress + Hauser Gmbh + Co. Kg | Verfahren zur Herstellung eines elastischen Körpers aus Al2O3- Keramik |
DE102008037037A1 (de) | 2008-08-08 | 2010-02-11 | Ceramtec-Etec Gmbh | Verfahren zur Herstellung einer transparenten polykristallinen Keramik |
DE102011014100A1 (de) | 2011-03-16 | 2012-09-20 | Ceramtec-Etec Gmbh | Transparentes Ballistik-Schutzsystem |
CN104220397A (zh) * | 2011-11-10 | 2014-12-17 | 陶瓷技术-Etec有限责任公司 | 借助流化床造粒制备透明陶瓷物品的方法 |
WO2024077033A1 (en) * | 2022-10-05 | 2024-04-11 | Battelle Memorial Institute | Transparent ceramic windows for hypersonic application |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2042263A1 (en) * | 1990-06-29 | 1991-12-30 | Charles D. Greskovich | Transparent polycrystalline garnets |
US6878456B2 (en) | 2001-12-28 | 2005-04-12 | 3M Innovative Properties Co. | Polycrystalline translucent alumina-based ceramic material, uses, and methods |
DE102004004259B3 (de) | 2004-01-23 | 2005-11-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Transparente polykristalline Sinterkeramik kubischer Kristallstruktur |
CN100420651C (zh) * | 2005-11-03 | 2008-09-24 | 韩敏芳 | 具有高线性透光率的亚微米晶粒透明氧化铝陶瓷 |
-
2007
- 2007-12-07 DE DE200710059091 patent/DE102007059091A1/de not_active Withdrawn
-
2008
- 2008-12-01 PT PT80208218T patent/PT2067754T/pt unknown
- 2008-12-01 EP EP12191075.6A patent/EP2559677A3/de not_active Ceased
- 2008-12-01 EP EP08020821.8A patent/EP2067754B1/de active Active
- 2008-12-01 ES ES08020821.8T patent/ES2584849T3/es active Active
- 2008-12-01 PL PL08020821T patent/PL2067754T3/pl unknown
Also Published As
Publication number | Publication date |
---|---|
EP2067754A2 (de) | 2009-06-10 |
PL2067754T3 (pl) | 2017-02-28 |
EP2067754A3 (de) | 2011-04-27 |
DE102007059091A1 (de) | 2009-06-10 |
EP2559677A2 (de) | 2013-02-20 |
EP2559677A3 (de) | 2013-05-08 |
PT2067754T (pt) | 2016-08-02 |
EP2067754B1 (de) | 2016-04-27 |
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