METHOD FOR PRODUCING SIC FIBER−REINFORCED SIC COMPOSITE MATERIAL

Title:

METHOD FOR PRODUCING SIC FIBER−REINFORCED SIC COMPOSITE MATERIAL

Document Type and Number:

WIPO Patent Application WO/2002/098819

Kind Code:

A1

Abstract:

A method for producing a SiC fiber−reinforced SiC composite material, which comprises providing a slurry comprising a medium and, dispersed therein, a fine SiC powder and a sintering auxiliary, impregnating a SiC fiber coated with one or more of carbon, boron nitride and silicon carbide with the slurry, to thereby prepare a preformed product, and subjecting the product to hot pressing preferably under a pressure of 10 Mpa or more and at a temperature of 1600 to 1800&ring C. As the sintering auxiliary, use is preferably made of one or more oxides selected from among Al₂O₃, Y₂O₃, SiO₂ and CaO. The slurry optionally further comprises a silicon−containing polymer such as a polycarbosilane, a polyvinyl silane and a polymethyl silane. The method allows the suppression of reaction of the SiC fiber with the matrix due to the above coating, which leads to the production of a SiC fiber−reinforced SiC composite material being significantly improved in mechanical properties.

More Like This:

JPH05270937	SILICON CARBIDE FILTER AND ITS PRODUCTION
JPS5891066	SILICON CARBIDE SINTERED BODY AND MANUFACTURE

Inventors:

KOHYAMA AKIRA (JP)
KATOH YUTAI (JP)

Application Number:

PCT/JP2001/009365

Publication Date:

December 12, 2002

Filing Date:

October 25, 2001

Export Citation:

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Assignee:

JAPAN SCIENCE & TECH CORP (JP)
KOHYAMA AKIRA (JP)
KATOH YUTAI (JP)

International Classes:

C04B35/565; C04B35/628; C04B35/80; (IPC1-7): C04B35/80

Foreign References:

EP1024121A2	2000-08-02
JPH11116337A	1999-04-27
JP2001010863A	2001-01-16
JPH11130552A	1999-05-18
JPH05221739A	1993-08-31

Other References: