Patent ID: 7404922
Filing Date: 2008-07-29
Classification: B32B,B82Y,C04B

Abstract:
1. 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 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.