Abstract
Boron nitride was studied as a fiber-matrix interface coating for Nicalon/SiC composites. In this study, two types of composites were used: low-O BN and high-O BN in the as-processed state. Samples were exposed to oxygen at temperatures as high as 950°C for times up to 400 h. Following oxidation experiments, the BN coatings were examined by TEM to quantify the extent of any reaction that occurred at either the fiber/BN and BN/SiC matrix interfaces. By using different microscopy and spectroscopy techniques, changes in structure and chemistry of the fiber-matrix interface region were characterized and composite degradation mechanisms quantified.
| Original language | English |
|---|---|
| Pages (from-to) | 463-470 |
| Number of pages | 8 |
| Journal | Composites - Part A: Applied Science and Manufacturing |
| Volume | 30 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 1999 |
| Event | Proceedings of the 1997 International Symposium on Ceramic Matrix Composites, A Special of SAMPE, JISSE-5 - Tokyo, JPN Duration: Oct 28 1997 → Oct 30 1997 |
Funding
Research sponsored by the US Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, the Office of Transportation Technologies, as part of the High Temperature Materials Laboratory Fellowship program, and the Office of Industrial Technologies, Industrial Energy Efficiency Division, as part of the Continuous Fiber Ceramic Composites Program, both managed by Lockheed Martin Energy Research Corp. under contract number DE-AC05-96OR22464.
| Funders | Funder number |
|---|---|
| Lockheed Martin Energy Research Corp. | DE-AC05-96OR22464 |
| Office of Industrial Technologies | |
| Office of Transportation Technologies | |
| US Department of Energy | |
| Office of Energy Efficiency and Renewable Energy |