Coated ceramic fibers

摘要

This invention pertains to coated ceramic fibers wherein the coating comprises at least one binary coating comprised of boron nitride (BN) and silicon nitride (Si3N4). The fibers are useful to make composites that comprise the coated ceramic fibers within ceramic matrices derived from curable preceramic polymers. The composites can be formed into complex shapes which have good oxidation resistance at high temperature, good resistance to moisture high flexural strength and are resistant to moisture.