中國(guó)有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 25 No. 11 November 2015 |
（State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China）
Abstract:A novel SiC-ZrB2 coating was prepared using a two-step technique by slurry-sintering and chemical vapor reaction on carbon/carbon (C/C) composites. The SiC-ZrB2 coating was composed of the scattered ZrB2 phase and the continuous SiC phase. It was observed that a good adhesion was built between the coating and the C/C composites. The SiC-ZrB2 coating samples exhibited a better ablation resistance in comparison with the uncoated C/C composites. The SiO2-ZrO2 barrier layer, the heat dissipation of the gaseous products and the pinning effect of ZrO2 all contributed to the good ablation resistance of the SiC-ZrB2 coated composites.
Key words: ablation; coating; microstructure; carbon/carbon composites
