Resistance of Si3N4/Cf Ceramic-Matrix Composites to High-Temperature Oxidation

Resistance of Si3N4/Cf Ceramic-Matrix Composites to High-Temperature Oxidation In fiber-reinforced ceramic-matrix composites (CMC), short-term, rapid oxidation at 1500°C is shown to promote the formation of silicon dioxide. This results in the buildup of a compact film with a high degree of crystallinity; the ensuing effects are closure of pores, self-healing of microcracks, and loss of mass reduced to a minimum. The carbon fibers retain structural integrity in all CMC. This technique can be employed to protect CMC-based components and thus to extend their service life. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Resistance of Si3N4/Cf Ceramic-Matrix Composites to High-Temperature Oxidation

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2003 by Plenum Publishing Corporation
Subject
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1023/A:1027339717118
Publisher site
See Article on Publisher Site

Abstract

In fiber-reinforced ceramic-matrix composites (CMC), short-term, rapid oxidation at 1500°C is shown to promote the formation of silicon dioxide. This results in the buildup of a compact film with a high degree of crystallinity; the ensuing effects are closure of pores, self-healing of microcracks, and loss of mass reduced to a minimum. The carbon fibers retain structural integrity in all CMC. This technique can be employed to protect CMC-based components and thus to extend their service life.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Oct 17, 2004

References

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