Abstract
Current generation carbon-carbon (C-C) and carbon-silicon carbide (C-SiC) materials are limited to service temperatures below 1800°C and materials are sought that can withstand higher temperatures and ablative conditions for aerospace applications. One potential materials solution is carbon fibre-based composites with matrices composed of one or more ultra-high temperature ceramics (UHTCs); the latter are intended to protect the carbon fibres at high temperatures whilst the former provides increased toughness and thermal shock resistance to the system as a whole. Carbon fibre-UHTC powder composites have been prepared via a slurry impregnation and pyrolysis route. Five different UHTC compositions have been used for impregnation, viz. ZrB 2, ZrB 2-20vol% SiC, ZrB 2-20vol% SiC-10vol% LaB 6, HfB 2 and HfC. Their high-temperature oxidation resistance has been studied using a purpose built oxyacetylene torch test facility at temperatures above 2500°C and the results are compared with that of a C-C benchmark composite.
Original language | English |
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Pages (from-to) | 423-432 |
Number of pages | 10 |
Journal | Journal of the European Ceramic Society |
Volume | 33 |
Issue number | 2 |
Early online date | 13 Sept 2012 |
DOIs | |
Publication status | Published - Feb 2013 |
Keywords
- Oxidation
- Oxyacetylene torch testing
- Ultra-high temperature
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry