Abstract
Aluminum is commonly observed in the surface region of SiC fibers in hot-pressed glass ceramic matrix composites. It is believed to be the result of interface reactions with Al-containing matrices. However, the influence of aluminum migration on the evolution of interphases, especially carbon enrichment, still remains unknown. In this study, reaction couples between an alumino-silicate glass and silicon-oxycarbide were used to study mass transport and interphase formation. The silicon oxycarbide, synthesized using a sol-gel process, was used to simulate the reactive phase of polymer-derived SiC fibers; in some case, it was doped with Al. A strong influence of aluminum on the carbon enrichment was observed. Using a thermodynamic model, the mechanism of the interphase evolution will be discussed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 801-808 |
| Number of pages | 8 |
| Journal | Ceramic Engineering and Science Proceedings |
| Volume | 16 |
| Issue number | 5 |
| State | Published - Sep 1995 |
| Event | Proceedings of the 19th Annual Conference and Exhibition on Composites, Advanced Ceramics, Materials, and Structures-B. Part B - Cocoa Beach, FL, USA Duration: Jan 8 1995 → Jan 12 1995 |
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry