Abstract
The continuous fiber ceramic composite (CFCC), such as SiC/SiC composites have attractive features for advanced energy conversion and production systems, especially gas turbines and fusion power reactors. Because SiC is well known to exhibit a quite fast decay behavior and an excellent oxidation resistance behavior due to the formation of a passive SiO2 layer. The variety of criteria for environmental effects of microstructural evolution at interface of SiC/SiC composites is proposed. Of interest is that the degradation of the composite is observed after annealed at 1500 °C under ultra high purity Ar flow condition. However there are few data of nano-structure analyses at interface of SiC/SiC composites. In this work, the environmental effects of microstructural evolution in SiC/SiC composites are examined by a Field Emission type High-Resolution Electron Microscopy (FE-HRTEM) and a Parallel Electron Energy Loss Spectroscopy (PEELS). A possible mechanism for this degradation is discussed and proposed.
| Original language | English |
|---|---|
| Pages (from-to) | 161-168 |
| Number of pages | 8 |
| Journal | Ceramic Engineering and Science Proceedings |
| Volume | 20 |
| Issue number | 4 |
| State | Published - 1999 |
| Externally published | Yes |
| Event | Proceedings of the 1999 23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - Cocoa Beach, FL, USA Duration: Jan 25 1999 → Jan 29 1999 |