Hot corrosion behaviour of Pt modified aluminized NiCrAlYSi coating on a Ni-based single crystal superalloy

被引：39
|
作者：
Sun, J. [1 ,2 ]
Liu, S. B. [1 ,2 ]
Li, W. [1 ,2 ]
Yu, H. J. [1 ,2 ]
Jiang, S. M. [1 ,2 ]
Gong, J. [1 ,2 ]
Sun, C. [1 ,2 ]
机构：
[1] Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
来源：
CORROSION SCIENCE | 2019年 / 149卷
关键词：
Superalloys; Metal coatings; Platinum; TEM; Hot corrosion; OXIDATION BEHAVIOR; CYCLIC OXIDATION; DEGREES-C; INTERDIFFUSION BEHAVIOR; PLATINUM; AL; MICROSTRUCTURE; RESISTANCE; SCALE; SULFATE;
D O I：
10.1016/j.corsci.2019.01.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The hot corrosion tests of Pt modified aluminized NiCrAlYSi coating coated with mixed salt films of Na2SO4 + K2SO4 and NaCl + Na2SO4 were carried out at 900 degrees C. Compared to the aluminized NiCrAlYSi coating, the Pt modified aluminized NiCrAlYSi coating exhibited an enhanced hot corrosion resistance in these two types of mixed salts. The existence of Pt in the aluminized coating restrained the outward diffusion of substrate elements and effectively suppressed internal sulfidation and oxidation during hot corrosion test. The degradation mechanism of the coating in the corrosion condition was also discussed.
引用
收藏
页码：207 / 217
页数：11
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