Abstract
Oxide fibre-reinforced / oxide matrix ceramic composites have the potential of existing high-temperature degradation in the increasingly aggressive environments of emerging applications for this still-evolving class of materials. An alumina (NextelTM) fibre-reinforced / alumina matrix composite with an oxidation-resistant boron nitride/silicon carbide interphase was investigated for its high temperature performance. Room-temperature tensile tests of specimens which had been exposed to 600, 800, 1000 and 1200 °C temperatures in ambient air for 10 and 100 h revealed time- and temperature-dependent retained strength behaviour. The effects of residual stress state and degradation of the interphase material on resulting mechanical performance were evaluated using load-unload tensile tests. Impulse resonance tests for elastic modulus at temperature, thermogravimetric/differential thermal analyses and post-test fractography were used to substantiate the micro mechanics of the observed tensile behavior.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 317-325 |
| Number of pages | 9 |
| Journal | Ceramic Engineering and Science Proceedings |
| Volume | 19 |
| Issue number | 3 |
| State | Published - Dec 1 1998 |
| Event | Proceedings of the 1998 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A. Part 1 (of 2) - Cocoa Beach, FL, USA Duration: Jan 20 1998 → Jan 24 1998 |
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry