Effect of stress loading on hot salt corrosion behavior of TiAlTaN/CrAlN multilayer coatings

被引：11

作者：

He, Zenian ^{[1
,2
]}

Wang, Shunhua ^{[2
]}

Li, Rongzhi ^{[1
,3
]}

Pu, Jibin ^{[1
]}

Wang, Yongxin ^{[1
]}

Yao, Jinxin ^{[3
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Key Lab Marine Mat & Protect Technol Zhejiang Prov, Ningbo 315201, Peoples R China

[2] Lanzhou Jiaotong Univ, Sch Mat Sci & Engn, Lanzhou 730070, Peoples R China

[3] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 220卷

基金：

国家重点研发计划;

关键词：

Hot corrosion; TiAlTaN; CrAlN coating; Interface structure; Stress corrosion; MECHANICAL-PROPERTIES; OXIDATION RESISTANCE; TITANIUM-ALLOY; CRACKING;

D O I：

10.1016/j.corsci.2023.111286

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The hot salt corrosion behavior of TiAlTaN coating and TiAlTaN/CrAlN multilayer coatings with different modulation periods under external stress condition were studied. The complex stress distribution on the specimen surface was obtained by designing a double-sided notched tensile specimen, and then the hot salt stress corrosion test was carried out at 500 degrees C for 120 h. The TiAlTaN monolayer coating had obvious stress cracking under stress loading, while the TiAlTaN/CrAlN multilayer coatings showed good resistance to hot salt stress corrosion crack even under high stress. The performance improvement was attributed to the role of multilayer interfaces in inhibiting microcrack growth and diffusion of the corrosion medium into the coating. In particular, the TiAlTaN/CrAlN-10 multilayer coating with smaller modulation period not only had better hot salt corrosion resistance, but also showed excellent resistance to crack propagation under stress loading, forming effective protection for the titanium alloy substrate.

引用

页数：12

共 48 条

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