The effect law of different hydrostatic pressures on the failure of multilayer Cr/GLC coatings in 3.5 wt% NaCl solution

被引：10

作者：

Ma, Hongyu ^{[1
]}

Liu, Rui ^{[1
]}

Cui, Yu ^{[2
]}

Ke, Peiling ^{[3
]}

Wang, Fuhui ^{[1
]}

Liu, Li ^{[1
]}

机构：

[1] Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Wencui Rd 62, Shenyang 110016, Peoples R China

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

来源：

CORROSION SCIENCE | 2023年 / 217卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Multilayer Cr/GLC coatings; Hydrostatic pressure; Electrochemical measurements; Corrosion; The electric double layer; ELECTROCHEMICAL CORROSION BEHAVIOR; CARBON-FILMS; RARE-EARTH; SYSTEM; ALLOY; EIS; PERFORMANCE; RESISTANCE; TANTALUM; SEAWATER;

D O I：

10.1016/j.corsci.2023.111120

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect law of different hydrostatic pressures on the corrosion resistance of multilayer Cr/GLC coatings in 3.5 wt% NaCl solution was studied by in-situ electrochemical measurements and transmission electron microscopy (TEM). The results indicated that hydrostatic pressure exponentially reduces the corrosion resistance of multilayer Cr/GLC coatings, which is attributed to hydrostatic pressure decreasing the thickness of the stern layer within the electric double layer (EDL) at the solution/coating and solution/metal substrate interfaces and hydrostatic pressure linearly promotes Cl- adsorption on the coating surface, which together promotes the dissolution of the metal transition Cr layer and the metal substrate. Hydrostatic pressure promotes the linear increase in the porosity of the coating and decreases the denseness of the coating surface.

引用

页数：15

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