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Binder System Containing Polycarbosilane and Polysiiazane for Injection-Molded Si3N4 Parts

Published online by Cambridge University Press:  25 February 2011

Sophia R. Su
Sophia R. Su*
Affiliation:
GTE Laboratories Incorporated 40 Sylvan Road Waltham, MA 02254, U.S.A.
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Abstract

Polycarbosilane and polysilazane, precursors of SiC and Si3N4, have been incorporated into the binder system for injection-molded Si3N4-based parts. Property requirements for these precursors as the injection-molding binder are briefly described. The binder removal mechanism is proposed and discussed based on the experimental results. Instead, the gas diffusion effect, rather than fluid wicking, is a key factor. Controlling the thermal decomposition rate of the binder is the key for achieving crack-free dense sintered parts.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 249: Symposium Q – Synthesis and Processing of Ceramics: Scientific Issues , 1991 , 383
Copyright
Copyright © Materials Research Society 1992

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References

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