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Method for Preparing Silicon Nitride and Silicon Nitride Composites

Abstract: 

A method of producing silicon nitride ceramics and silicon nitride ceramic composites. A mixture comprising a polysilazane and an additive effective to increase coupling between the mixture and electromagnetic energy is converted to a preceramic intermediate. The preceramic intermediate is treated with electromagnetic energy and thereby converted to a silicon nitride ceramic and/or a silicon nitride ceramic composite.

Patent Number: 
5,980,699
Date Of Issue: 
11/09/1999
Inventors: 

Scott F. Timmons;Reneee C. Graef;Stuart T. Schwab;Montgomery D. Grimes