Abstract
The effects of final heat treatment temperature on the microstructure, mechanical properties and fractured surface image of mesophase pitch-based 2D C/C composites were studied by three-point bending, XRD and SEM test, and the fracture mechanism was investigated. The results show that the graphitization degree and microcrystal size (Lc) increase, interlayer distance (d002) decrease with the increase of final heat treatment temperature of the C/C composites. The interface bonding strength weakens with the increase of heat treatment temperature. The flexural strength of composites after heat treatment is lower than that of untreated, the fracture characters of composites are changed from the brittle fracture to like-tough.
| Original language | English |
|---|---|
| Pages (from-to) | 15-18 |
| Number of pages | 4 |
| Journal | Cailiao Gongcheng/Journal of Materials Engineering |
| Issue number | 1 |
| State | Published - Jan 2007 |
Keywords
- Carbon/carbon composite
- Heat treatment temperature
- Mechanical property
- Mesophase pitch
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