Abstract
In order to protect carbon/carbon (C/C) composites from oxidation, a silicon carbide coating has been produced by a two-step pack cementation technique. XRD analysis showed that the inner coating obtained from the first step was a β-SiC layer and the outer coating formed by the second step pack cementation was composed of α-SiC, Si and β-SiC. The as-received coating provided excellent oxidation resistance, proving able to protect C/C composites from oxidation for more than 310 h at 1773 K in air. The weight loss of the coated C/C composites was considered to arise from the debonding of some glass and the formation of bubble holes on the coating surface.
| Original language | English |
|---|---|
| Pages (from-to) | 923-927 |
| Number of pages | 5 |
| Journal | Scripta Materialia |
| Volume | 52 |
| Issue number | 9 |
| DOIs | |
| State | Published - May 2005 |
Keywords
- Carbon/carbon composites
- Coating
- Oxidation