This study investigates the oxidation mechanisms of carbon-carbon composite materials of the type used for aircraft brakes. The rate-controlling steps for oxidation at temperatures ranging between 450 and 750°C were determined by measuring activation energies of composite samples in bulk form and in
Characterization of carbon-carbon composites—II: Oxidation behaviour
✍ Scribed by P. Ehrburger; J. Lahaye; C. Bourgeois
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 558 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0008-6223
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✦ Synopsis
Carbon-carbon composites made from ex-acrylic fibres and pyrocarbon matrices have been gasified in air in order to investigate their resistance to oxidation. The carbon fibres and the surrounding pyrocarbon layers are preferentially oxidized due to a catalytic process. The importance of the catalytic phenomenon depends primarly on the heat treatment of the composites. Lowest oxidation rates are obtained after heat treatment at 2900K. Oxidation tests allow a simple evaluation of the carbon-carbon composites performance at the laboratory scale.
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