Patent ID: 6342269
Filing Date: 2002-01-29
Classification: C04B,Y10S

Abstract:
A method for manufacturing a ceramic-based composite material, comprising the following steps:forming a fiber fabric from inorganic fibers; forming a coating layer on a surface of the fabric; forming a matrix between the fibers of the fabric, wherein the step of matrix forming includes heating the fabric in the presence of methyltrichlorosilane by chemical vapor infiltration to form silicon carbide, forming a co-polymer by mixing at least two different organic polymers to form mixed organic polymers wherein the at least two organic polymers include polycarbosilane (PCS) and polymethylsilane (PMS) and crosslinking the mixed organic polymers by holding the mixed organic polymers for a predetermined time at an intermediate temperature which is lower than a firing temperature sufficient to form silicon carbide, impregnating the co-polymer into the fabric to form an impregnated fabric, and firing the impregnated fabric in an inert gas environment at the firing temperature.