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Microstructure and morphology of SiCf-SiBC composites

Published online by Cambridge University Press:  15 July 2001

S. Darzens
Affiliation:
LERMAT (URA CNRS 1317), ISMRA, 6 boulevard Maréchal Juin, 14050 Caen Cedex, France
J. Vicens
Affiliation:
LERMAT (URA CNRS 1317), ISMRA, 6 boulevard Maréchal Juin, 14050 Caen Cedex, France
J. L. Chermant
Affiliation:
LERMAT (URA CNRS 1317), ISMRA, 6 boulevard Maréchal Juin, 14050 Caen Cedex, France
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Abstract

This paper deals with the study of a new generation of ceramic matrix composites, SiCf-SiBC, which consists of a 2.5D perform of SiC fibers and of a self sealing multilayered matrix. Three different batches of these CMCs have been investigated in a morphological point of view thanks to the observations performed at the mesoscopic scale by scanning electron microscopy and automatic image analysis, and also at a microscopic scale by transmission electron microscopy. Through this study, a lot of care was taken about the description of the pyrocarbon interphase and of the different matrix interfaces, which play a key role in the damage features, and more specially in the deflection of the matrix microcracks developed through tested mechanical composites.

Keywords

Type
Research Article
Copyright
© EDP Sciences, 2001

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