Abstract
Ceramic matrix composites using three dimensional woven fabric of Si-Ti-C-O fiber were fabricated by infiltration of polytitanocarbosilane solution and pyrolysis, and evaluated. It was possible to fabricate a dence composite even by this convenient method. The composite using Si-Ti-C-O fiber which has both of oxide rich surface layer and carbon rich surface layer, was excellent in mechanical property compared to the composites using Si-Ti-CO fiber with carbon rich surface layer or with no surface layer. The composite using Si-Ti-C-O fiber with two surface layers maintained about 80% of bending strength after heat-treatment at 1200°C for 100 hours in air.
