Abstract
The thermal expansion law of matrix-modified C/C composites under high temperatures is studied. The results show that the law between the temperature and the thermal expansion coefficient of C/C composite, accords with the general linearity which exists in carbon materials under 900°C. However, the law between the temperature and the thermal expansion coefficient of matrix-modified C/C composite meets exponential relation from 900°C to 1500°C. The laws are reliable and reasonable as indicated by our experiments and mathematical analysis. Therefore, it is significant for improving the matching degree of the thermal expansion coefficient between C/C composites and their oxidation resistant coatings, and for raising the ability to resist oxidation under high temperatures.
| Original language | English |
|---|---|
| Pages (from-to) | 471-473 |
| Number of pages | 3 |
| Journal | Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica |
| Volume | 24 |
| Issue number | 5 |
| State | Published - Sep 2003 |
Keywords
- C/C composites
- Law
- Matrix-modified
- Thermal expansion coefficient