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METHOD FOR PRODUCING SIC FIBER-REINFORCED SIC COMPOSITE MATERIAL BY MEANS OF HOT PRESS

Foreign code F040000544
File No. (A071P85)
Posted date Feb 22, 2005
Country WIPO
International application number 2001JP009363
International publication number WO 2002/081405
Date of international filing Oct 25, 2001
Date of international publication Oct 17, 2002
Priority data
  • P2001-104186 (Apr 3, 2001) JP
Title METHOD FOR PRODUCING SIC FIBER-REINFORCED SIC COMPOSITE MATERIAL BY MEANS OF HOT PRESS
Abstract A method for producing a SiC fiber-reinforced SiC composite material by means of a hot press, which comprises providing a powdery mixture comprising a SiC fine powder and, as a sintering auxiliary, a powder of one or more oxides selected from among Al2O3, Y2O3, SiO2 and CaO, admixing the powdery mixture with a SiC precursor resin and dispersing it homogeneously, to thereby prepare a resin slurry for forming a matrix, impregnating a SiC fiber formed product, which exhibits high crystalinity and has a nearly stoichiometric composition, with the resin slurry, and subjecting the impregnated product to hot pressing under pressure at a temperature of 1600 u or higher under a condition wherein a liquid phase is present. In the method, the use of a SiC fiber having high resistance to heat as a reinforcing fiber results in the production of a SiC fiber-reinforced SiC composite material having a high density and being excellent in mechanical properties by one time hot pressing with an elevated sintering temperature.
Scope of claims (In Japanese)
【請求項1】【請求の範囲】1.Al2O3,Y2O3,SiO2,CaOの何れか1種又は2種以上の酸化物粉末を焼結助剤粉末としてSiC微粉末に配合した混合粉末をSiC前躯体樹脂と混合してマトリックス形成用樹脂スラリーを調製し、該樹脂スラリーを高結晶性・近化学量論組成のSiC繊維成形体に含浸させた後、加圧下において1600℃以上の液相が存在する条件下でホットプレスすることを特徴とするSiC繊維強化型SiC複合材料のホットプレス製造方法。

【請求項2】2.ポリカルボシラン,ポリビニルボシラン,ポリメチルシランの1種又は2種以上をSiC前躯体樹脂に使用する請求項1記載のSiC繊維強化型SiC複合材料 のホットプレス製造方法。

【請求項3】3.焼成時に10~20MPaの加圧力を樹脂含浸繊維成形体に加える請求項1又は2記載のSiC繊維強化型SiC複合材料のホットプレス製造方法。
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • Japan Science And Technology Corporation
  • Inventor
  • Kohyama, Akira
  • Katoh, Yutai
IPC(International Patent Classification)
Reference ( R and D project ) CREST Social Systems for Better Environment Performance AREA
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