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Method for producing SiC fiber-reinforced SiC composite material 実績あり

外国特許コード F110005125
整理番号 A071-40US
掲載日 2011年8月23日
出願国 アメリカ合衆国
出願番号 47879701
公報番号 20050001361
公報番号 7318906
出願日 平成13年10月25日(2001.10.25)
公報発行日 平成17年1月6日(2005.1.6)
公報発行日 平成20年1月15日(2008.1.15)
国際出願番号 JP2001009365
国際公開番号 WO2002098819
国際出願日 平成13年10月25日(2001.10.25)
優先権データ
  • 特願2001-164996 (2001.5.31) JP
  • 2001WO-JP09365 (2001.10.25) WO
発明の名称 (英語) Method for producing SiC fiber-reinforced SiC composite material 実績あり
発明の概要(英語) (US7318906)
A preformed of SiC fiber, which is coated with one or more of C, BN and SiC, is impregnated with a slurry, which suspends fine SiC powder and a sintering additive therein.
The impregnated preform is hot-pressed at 1600-1800° C. with a pressure of 10 MPa or more.
The sintering additive may be one or more of Al2O3, Y2O3, SiO2 and CaO.
The slurry may futher contain a silicone polymer selected from polycarbosilane, polyvinylsilane and polymethylsilane.
Reaction of SiC fiber with a matrix is inhibited by the coating, so as to manufacture a SiC fiber-reinforced SiC-matrix composite remarkably improved in mechanical properties.
特許請求の範囲(英語) [claim1]
1. A method of manufacturing a SiC fiber-reinforced SiC matrix composite, comprising the steps of: providing a fiber preform composed of a SiC fiber, said SiC fiber having a quasi-stoichiometric composition and coated with one or more coatings selected from the group consisting of carbon, boron nitride and silicon carbide;
preparing a slurry by mixing fine SiC powder and a sintering additive with a silicone polymer, said sintering additive selected from the group consisting of Al2O3, SiO2 and CaO;impregnating the fiber preform with the slurry;
and
hot-pressing the impregnated fiber preform at 1600 deg. C. to 1800 deg. C. with a pressure of between 10 MPa and 30 MPa, wherein the impregnated fiber preform is liquid-phase sintered to a SiC fiber-reinforced SiC matrix composite wherein the sintering additive and the fine SiC powder are converted to a liquid phase, resulting in promotion of the sintering reaction and densification of the SiC matrix composite.
[claim2]
2. The method according to claim 1, wherein the silicone polymer is one or more silicone polymers selected from the group consisting of polycarbosilane, polyvinylsilane and polymethylsilane.
  • 発明者/出願人(英語)
  • KOHYAMA AKIRA
  • KATOH YUTAI
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
米国特許分類/主・副
  • 264/625
  • 264/640
  • 264/641
  • 264/642
参考情報 (研究プロジェクト等) CREST Social Systems for Better Environment Performance AREA
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