Preparation and oxidation behaviour of NiCrAlYSc coatings on a Ni-based single crystal superalloy

被引：15
作者：
Liu, S. B. [1 ,2 ]
Li, W. [1 ,2 ]
Sun, J. [3 ]
Fu, L. B. [1 ,2 ]
Wang, T. G. [4 ]
Jiang, S. M. [2 ]
Gong, J. [2 ]
Sun, C. [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
[3] Qilu Univ Technol, Adv Res Inst Multidisciplinary Sci, Shandong Acad Sci, 3501 Daxue Rd, Jinan 250353, Peoples R China
[4] Tianjin Univ Technol & Educ, Tianjin Key Lab High Speed Cutting & Precis Machi, Tianjin 300222, Peoples R China
来源：
CORROSION SCIENCE | 2020年 / 171卷
关键词：
Metal coatings; Superalloys; Scandium; Scale adhesion; Oxidation; HOT-CORROSION BEHAVIOR; HIGH-TEMPERATURE OXIDATION; ALUMINA CATALYST SUPPORTS; ISOTHERMAL OXIDATION; TRANSIENT OXIDATION; THERMAL-STABILITY; REACTIVE ELEMENTS; CYCLIC OXIDATION; SURFACE-AREA; RESISTANCE;
D O I：
10.1016/j.corsci.2020.108703
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The NiCrAlYSc coatings with different Sc content were prepared on the Ni-based superalloy by arc ion plating. Cyclic and isothermal oxidation behaviours of all the coatings were investigated. The results show that an appropriate addition of Sc in the coating can significantly improve the scale adhesion, shorten the transient oxidation stage and promote the transformation from theta-Al2O3 to alpha-Al2O3. The effects of Sc addition on the oxidation performance of the coating as well as the mechanism of oxide adherence were discussed.
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页数：14
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