Polymer precursor for silicon carbide/aluminum nitride ceramics

摘要

A block copolymer is prepared by reacting an aluminumnitrogen polymer and a silazane polymer at a temperature not greater than 400 DEG C. Block copolymers containing alkenyl or alkynyl groups can be crosslinked by supplying energy to generate free radicals, An AlN/SiC-containing ceramic is formed by pyrolyzing the crosslinked block copolymer in a nonoxidizing atmosphere.