Effects of Y addition on the pre-oxidation and corrosion behaviours of the alumina/niobium aluminide coatings on the surface of niobium core

被引：2
|
作者：
Zheng, Liwei [1 ,2 ]
Liu, Enze [2 ]
Zheng, Zhi [2 ]
Ning, Likui [2 ]
Tong, Jian [2 ]
Tan, Zheng [2 ]
Li, Haiying [2 ]
机构：
[1] Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 213卷
关键词：
Refractory metal core; Aluminide coating; Pack cementation; High temperature oxidation; Molten metal corrosion; Reactive element effect; OXIDATION BEHAVIOR; PACK CEMENTATION; SUICIDE COATINGS; Y2O3; CONTENT; NB; ALLOY; SYSTEMS; MO;
D O I：
10.1016/j.corsci.2023.110991
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Y-modified alumina/niobium aluminide coatings were prepared on the surface of the niobium substrate by pack cementation and subsequent pre-oxidation treatments. The pre-oxidation behaviour of the Y-modified and undoped alumina/niobium aluminide coatings in the air atmosphere at 1300 degrees C and their corrosion behaviour in the molten DZ4125L superalloy at 1500 degrees C were investigated in this study. It was demonstrated that the Y addition could reduce the growth rate of the oxide scale, suppress the localised oxidation failure and improve the molten superalloy corrosion-resistance of the alumina/niobium aluminide coatings. The mechanism of Y modification has also been revealed.
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页数：17
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