Abstract
Two kinds of multi-layer CVD SiC coatings were prepared on a three-dimensional C/SiC composite. Oxidation behavior of the coating and the composite were studied and the effect of defects in the coating on its oxidation protection property were investigated. Above 1200 °C, thickness of the oxide film formed on the coating was related to oxidation time by the Fick's first law X(t)2 = Bt, the diffusion rate constant increased with oxidation temperature according to the Arrhenius' relation ln B = -32 483/T+1.4048. Morphology of the interface between the CVD SiC and its oxide film was different after oxidation at temperatures from 1200 to 1500 °C. It was interpreted by consideration of the interfacial stress produced by thermal expansion mismatch and the CO gas pressure produced by interfacial reaction.
| Original language | English |
|---|---|
| Pages (from-to) | 2229-2234 |
| Number of pages | 6 |
| Journal | Carbon |
| Volume | 40 |
| Issue number | 12 |
| DOIs | |
| State | Published - 2002 |
Keywords
- A. Carbon composites
- B. Coating, Oxidation
Fingerprint
Dive into the research topics of 'Oxidation and defect control of CVD SiC coating on three-dimensional C/SiC composites'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver