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摘要
The development of robust high temperature oxidation resistant coatings for Nb-Si based alloy was evaluated for a Mo-Si-B coating system that was applied by a two step process. It is observed that the coating is composed of an outer layer of MoSi2 containing boride dispersoids and an inner layer of unreacted Mo. The mass gain of substrate and Mo-Si-B coating is 190.08 and 1.28 mg cm(-2) after oxidation at 1250 degrees C in dry air for 100 h, respectively. The good oxidation resistance of the coating is attributed to the formation of a continuous borosilicate glass coverage.
- 出版日期2014-10
- 单位北京航空航天大学
