Polysilazane Thermosets as Precursors for Silicon Carbide and Silicon Nitride
J. Schwark, A. Lukacs III
This paper discusses the development of thermosetting preceramic polymers, emphasizing peroxide-curable polysilazanes. These polymers are excellent precursors for both silicon nitride and silicon carbide. Vinyl-substituted polysilazanes may be readily thermoset with peroxide initiators. In addition, a new class of polysilazanes which contain peroxide substituents directly bound to the polymer has been developed. The utility of peroxide-cured polysilazane precursors for the formation of silicon nitride article has been demonstrated.