Ex-polymer SiC coatings with Al2O3 particulates as filler materials

Ceramic-on-metal coatings can be made by pyrolyzing pre-ceramic polymers. However, the large shrinkage associated with the transformation of the initial polymer into the final ceramic material usually leads to cracks, which develop when the thickness of the coating exceeds a critical value. The pres...

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Bibliographic Details
Published in:Ceramics international 1993, Vol.19 (4), p.259-267
Main Authors: Labrousse, M., Nanot, M., Boch, P., Chassagneux, E.
Format: Article
Language:English
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Summary:Ceramic-on-metal coatings can be made by pyrolyzing pre-ceramic polymers. However, the large shrinkage associated with the transformation of the initial polymer into the final ceramic material usually leads to cracks, which develop when the thickness of the coating exceeds a critical value. The present work shows that the use of a filler, constituted of alumina particulates, allows the critical thickness of SiC-based coatings to be increased by about an order of magnitude.
ISSN:0272-8842
1873-3956
DOI:10.1016/0272-8842(93)90058-Y