Abstract
Materials of widely differing properties were used as substrates for the preparation of carbon-carbon composites by chemical vapor deposition of carbon from a propylene-nitrogen mixture at atmospheric pressure and 750°-850°C. The pyrolytic carbon yields were found to be independent of the surface area of the carbon-fabric substrate. The oxidation behavior of the composites and their individual components was studied over the entire burn-off range (0%-100%). The structure of the starting and partially reacted composites was investigated by X-ray diffraction and scanning electron microscopy. No synergistic effects were observed when the reactivities of the individual components were significantly different. It is thus concluded that a straightforward analysis of the complete burn-off profile of a composite, together with the knowledge of the structure and reactivity of the individual components, is necessary and can be sufficient for a fundamental understanding of its oxidation resistance.
Original language | English (US) |
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Pages (from-to) | 365-374 |
Number of pages | 10 |
Journal | Carbon |
Volume | 30 |
Issue number | 3 |
DOIs | |
State | Published - 1992 |
All Science Journal Classification (ASJC) codes
- General Chemistry
- General Materials Science