The effect of amorphous coating on high temperature oxidation resistance of Ni-based single crystal superalloy

被引：22

作者：

Wang, Mingming ^{[1
]}

Cheng, Xiaopeng ^{[1
]}

Jiang, Wenxiang ^{[1
]}

Cao, Tianci ^{[1
]}

Liu, Xianqiang ^{[1
]}

Lu, Junxia ^{[1
]}

Zhang, Yuefei ^{[2
]}

Zhang, Ze ^{[2
]}

机构：

[1] Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China

[2] Zhejiang Univ, Inst Superalloys Sci & Technol, Sch Mat Sci & Engn, Hangzhou 310027, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 213卷

基金：

中国博士后科学基金; 北京市自然科学基金; 中国国家自然科学基金;

关键词：

Oxidation; Superalloy; Atomic layer deposition; Isothermal oxidation; Kinetics; ATOMIC LAYER DEPOSITION; NICKEL-BASED SUPERALLOY; DEGREES-C; CYCLIC OXIDATION; BEHAVIOR; MECHANISM; AL; AIR; 1000-DEGREES-C; EVOLUTION;

D O I：

10.1016/j.corsci.2023.111000

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Amorphous Al2O3 coating was prepared on Ni-based single crystal superalloy via atomic layer deposition (ALD) for high temperature oxidation protection. The oxygen inward transport and outward-cation diffusion were hindered by amorphous Al2O3 coating, and the coated alloy showed high oxidation resistance. The low oxygen partial pressure at the alloy/coating interface altered the alloy oxidation behavior, allowing the priority oxidation of protective Al and Cr elements. The oxidation process was controlled by the growth of Cr2O3 and Al2O3. The coating exhibited high spallation resistance. Degradation of the coating, the formation of NiAl2O4 phase in amorphous Al2O3 layer, was observed.

引用

页数：13

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