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Oxidation resistant non-oxide ceramic matrix composites

Oxidationsbeständige nichtoxidische keramische Faserverbundwerkstoffe
: Klemm, H.; Bales, A.

Ceramic engineering & science proceedings 23 (2002), Nr.3, S.305-310
ISSN: 0196-6219
Fraunhofer IKTS ()
oxidation; CMc; SiC-fiber; Matrix

In the present study the oxidation behavior of SiC-fiber based composites (UBE SA3) with a Si3N4-MoSi2 matrix has been studied. The composites have been produced by infiltration of ceramic fiber bundles with various slurries, winding by a computer controlled winding-up module and the thermal treatment. The microstructure of the resulting CMC was characterized before and after oxidation treatment. As the consequence of a modified oxidation mechanism of the matrix, the ceramic fibers were found to be protected from the oxygen attack resulting in an improved oxidation resistance of the composite.