Abstract
The coefficients of thermal expansion and thermal diffusivity of the 2.5D carbon/silicon carbide composites tested from room temperature to 1400T by the thermal dilatometer and laser flash apparatus. The results showed that the coefficient of thermal expansion increased slowly as temperature increased, with fluctuations at 350°C and 700°C, and the transverse coefficient was slightly higher than the longitudinal coefficient. However, the coefficient of thermal diffusivity decreased as temperature increased, and the rate of decline turned slower. The coefficient of thermal diffusivity of the composite with SiC coating increased by 1-2 times compared to the material without SiC coating.
| Original language | English |
|---|---|
| Pages (from-to) | 60-64 |
| Number of pages | 5 |
| Journal | Hangkong Cailiao Xuebao/Journal of Aeronautical Materials |
| Volume | 27 |
| Issue number | 4 |
| State | Published - Aug 2007 |
Keywords
- 2.5D C/SiC composites
- Coefficient of thermal diffusivity
- Coefficient of thermal expansion
- SiC coating