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Microstructure Development in SI3N4-Based Composites

Published online by Cambridge University Press:  25 February 2011

S. T. Buljan  and
G. Zilberstein
S. T. Buljan
Affiliation:
GTE Laboratories Incorporated, 40 Sylvan Road, Waltham, MA 02254
G. Zilberstein
Affiliation:
GTE Laboratories Incorporated, 40 Sylvan Road, Waltham, MA 02254
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Abstract

The success and predictability of mechanical property improvements in ceramic matrix composites strongly depends on the ability to generate specific spacial arrangements and maintain the properties of the constituents. Dispersoids added to improve the toughness and strength of the ceramic base can mechanically or chemically alter the development of the matrix microstructure during consolidation and cause the properties to deviate from expected values. The present study examines and compares the development of a Si3N4 based composite microstructure with the chemically “active” TiC and “inert” SiC dispersoids; it further examines the effect of the resulting microstructures on the composite fracture toughness.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 78: Symposium E – Advances in Structural Ceramics , 1986 , 273
Copyright
Copyright © Materials Research Society 1987

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References

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