Patent ID: 7404922

Claim:
A hot-pressing method of manufacturing a SiC-matrix composite reinforced by SiC fiber, which comprises the steps of: providing a powdery mixture of fine SiC powder with one or more sintering additives selected from Al 2 O 3 , Y 2 O 3 , SiO 2 and CaO; preparing a matrix-forming slurry by blending said powdery mixture in a polymeric SiC precursor; impregnating a preform of SiC fiber, which has quasi-stoichiometric composition with high crystallinity, with said slurry; and hot-pressing said SiC fiber impregnated preform at a temperature between 1600° C. and 1850° C. with a pressure of 10-20 MPa in presence of a liquid phase resulting from reaction of the sintering additive or additives with fine SiC powder.