Polymeric Aluminasilazane Precursors for Aluminosilicon Nitride

摘要

The reaction of trimethylaluminum with the cyclic oligomers obtained byammonolysis of methyldichlorosilane results in evolution of methane and formation of soluble, cross-linked aluminasilazanes. Pyrolysis of the products in a stream of argon gives a good yield of black aluminosilicon carbonitride, while pyrolysis in a stream of ammonia results in formation of white aluminosilicon nitride. Keywords: Silicon nitride, Aluminum nitride, Silicon carbonitride, Preceramic polymers, Organosilicon compounds, Organoaluminum compounds, Polysilazanes, Magneto-optical recording materials. (jg)