Optimizing isothermal oxidation behavior of the Y-containing Nb-Ti-Si based alloy: The role of precursor Y2O3

被引：8
作者：
Wang, Qibin [1 ]
Wang, Qi [1 ]
Chen, Ruirun [1 ]
Wang, Xiaowei [1 ]
Su, Yanqing [1 ]
Fu, Hengzhi [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China
来源：
CORROSION SCIENCE | 2024年 / 227卷
基金：
中国国家自然科学基金;
关键词：
Nb-Ti-Si based alloy; Intermetallic; Y2O3; Oxidation; MECHANICAL-PROPERTIES; DEGREES-C; RESISTANCE; TEMPERATURE; AL; COMPOSITES; DIFFUSION; MO; MICROSTRUCTURE; IMPROVEMENT;
D O I：
10.1016/j.corsci.2023.111706
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of Y2O3 on the oxidation resistance of Nb-Ti-Si based alloys was investigated. Acicular Y2O3 is generated with Y content exceeding 0.3 at%. Oxidation tests reveal that the mass gain per unit area of the Y-containing alloys is lower than that of the Y-free alloy at 800 degrees C and 1200 degrees C. The oxide layer of the Y-free alloy will fracture and even pesting. After adding Y, the Y2O3 can react with Nb2O5 and TiO2 to generate YNbTiO6. The pinned YNbTiO6 at the interface enhances the adhesion between the oxide layer and substrate, slowing down the growth of the oxide layer.
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页数：11
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