Abstract
The internal friction of C/SiC and SiC/SiC composites was investigated by means of forced vibration from room temperature to 600°C under different strain amplitude, and the internal friction mechanism was also discussed. The results show that the internal friction of C/SiC composites decreases at first and then increases with increasing temperature, and the minimum of internal friction occurs at about 120°C. While the internal friction of SiC/SiC composites increases monotonically with the increase of temperature. C/SiC composites have a higher internal friction value and lower dynamic modulus than SiC/SiC composites. The internal friction of both C/SiC and SiC/SiC composites decreases when the strain amplitude is increased, while the dynamic modulus of both the composites is independent of the strain amplitude.
| Original language | English |
|---|---|
| Pages (from-to) | 889-894 |
| Number of pages | 6 |
| Journal | Wuji Cailiao Xuebao/Journal of Inorganic Materials |
| Volume | 20 |
| Issue number | 4 |
| State | Published - Jul 2005 |
Keywords
- Composites
- Internal friction
- SiC