期刊
COATINGS
卷 11, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/coatings11111373
关键词
multivariate alloy; microstructure; alloying; oxidation behavior; mechanism
资金
- Anhui Province Science Foundation for Excellent Young Scholars [2108085Y19]
- National Natural Science Foundation of China [51604049]
This study discussed the oxidation resistance of Nb-Si-based superalloys, analyzed the effects of five alloying elements, and summarized the oxidation reaction and failure mechanism. The findings provide insights for future research on high-temperature niobium alloys.
Nb-Si-based superalloys are considered as the most promising high-temperature structural material to replace the Ni-based superalloys. Unfortunately, the poor oxidation resistance is still a major obstacle to the application of Nb-Si-based alloys. Alloying is a promising method to overcome this problem. In this work, the effects of Hf, Cr, Zr, B, and V on the oxidation resistance of Nb-Si-based superalloys were discussed. Furthermore, the microstructure, phase composition, and oxidation characteristics of Nb-Si series alloys were analyzed. The oxidation reaction and failure mechanism of Nb-Si-based alloys were summarized. The significance of this work is to provide some references for further research on high-temperature niobium alloys.
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