Microstructure and properties of silicon nitride-matrix ceramic composites

Microstructure and properties of silicon nitride-matrix ceramic composites A study is summed up on the microstructure and mechanical properties of ceramic-matrix composites using silicon nitride, Si3N4, as the matrix and SiC whiskers as the reinforcement. It has been found that an Si3N4 matrix synthesized by a plasmachemical process and long SiC whiskers (with a length-to-diameter ratio of more than 50) enhance crack resistance, high-temperature strength, and microhardness, whereas an Si3N4 matrix produced by self-propagating high-temperature synthesis and short SiC whiskers (with a length-to-diameter ratio of less than 50) enhance thermal endurance. The proposed composites hold promise as candidates for use in engineering applications where wear resistance, thermal endurance, and shock resistance are critical. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Microstructure and properties of silicon nitride-matrix ceramic composites

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Publisher
Springer US
Copyright
Copyright © 1998 by Plenum Publishing Corporation
Subject
Chemistry; Characterization and Evaluation of Materials; Materials Science; Ceramics, Glass, Composites, Natural Methods
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1007/BF02768147
Publisher site
See Article on Publisher Site

Abstract

A study is summed up on the microstructure and mechanical properties of ceramic-matrix composites using silicon nitride, Si3N4, as the matrix and SiC whiskers as the reinforcement. It has been found that an Si3N4 matrix synthesized by a plasmachemical process and long SiC whiskers (with a length-to-diameter ratio of more than 50) enhance crack resistance, high-temperature strength, and microhardness, whereas an Si3N4 matrix produced by self-propagating high-temperature synthesis and short SiC whiskers (with a length-to-diameter ratio of less than 50) enhance thermal endurance. The proposed composites hold promise as candidates for use in engineering applications where wear resistance, thermal endurance, and shock resistance are critical.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Nov 27, 2007

References

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