Method for formation of crystalline boron-doped silicon carbide and amorphous boron silicon oxycarbide fibers from polymer blends containing siloxane and boron

摘要

The present invention relates to a method for the formation of amorphous boron silicon oxycarbide fibers and crystalline boron-doped silicon carbide fibers comprising: preparing a blend of a siloxane resin and a boron-containing polymer, forming the blend into green fibers, and then curing and pyrolyzing the fibers.