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 PDF

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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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pressing
ceramic material
cyclic
density
sintering
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Lars Schnetter
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Ceramtec ETEC GmbH
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Ceramtec ETEC GmbH
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    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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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
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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
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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
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    • C04B35/6455—Hot isostatic pressing
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    • 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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    • C04B2235/02—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
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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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    • C04B2235/76—Crystal structural characteristics, e.g. symmetry
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    • C04B2235/764—Garnet structure A3B2(CO4)3
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    • 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

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Claims (1)

  1. imagen1
ES08020821.8T 2007-12-07 2008-12-01 Procedimiento para la producción de un material cerámico transparente policristalino mediante un prensado cíclico Active ES2584849T3 (es)

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

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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

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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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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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