Insight to corrosion mechanism of 90/10 copper-nickel alloys under different sea depths

被引：23

作者：

Li, Bing-Zhi ^{[1
,2
]}

Zhang, Zhao-Qi ^{[2
,3
]}

Qiu, Zheng-Hui ^{[2
]}

Meng, Xiao ^{[1
,2
]}

Zhao, Yu-Bo ^{[1
,2
]}

Zhang, Hai-Bing ^{[2
]}

Hou, Jian ^{[2
]}

Sun, Jing ^{[1
]}

Lin, Cun-Guo ^{[2
]}

Zeng, Rong-Chang ^{[3
]}

机构：

[1] Shandong Univ Sci & Technol, Coll Mech & Elect Engn, Qingdao 266590, Peoples R China

[2] Luoyang Ship Mat Res Inst, State Key Lab Marine Corros & Protect, Qingdao 266101, Peoples R China

[3] Shandong Univ Sci & Technol, Coll Mat Sci & Engn, Corros Lab Light Met, Qingdao 266590, Peoples R China

来源：

MATERIALS LETTERS | 2021年 / 303卷

关键词：

Deep sea; 90/10 copper-nickel alloy; Corrosion; XPS; Surfaces; BEHAVIOR; TUBE;

D O I：

10.1016/j.matlet.2021.130513

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, for the first time, the corrosion behavior of 90/10 copper-nickel alloys was investigated systematically by simulating the different sea depths using static weight loss test, XPS depth analysis (argon ion etching), and electrochemical method. The static weight loss test showed that the average corrosion rate increased first, and then decreased with the increase of sea depth. XPS spectra demonstrated that the composition of the corrosion product layer did not change with variation of sea depth. The outer corrosion product was mainly CuO, Cu2O, Cu2Cl, NiO, and gamma-FeOOH, while the inner corrosion product was mainly Cu-2(OH)(3)C1, Cu2O, NiO, Ni(OH)(2), and gamma-FeOOH. Electrochemical impedance spectroscopy exhibited that the inner corrosion layer played an important role in protecting the alloy.

引用

页数：4

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