Effect of the direct current electric field on the initial corrosion of steel in simulated industrial atmospheric environment

被引：66

作者：

Dai, Nianwei ^{[1
]}

Zhang, Junxi ^{[1
]}

Chen, Qimeng ^{[1
]}

Yi, Bo ^{[1
]}

Cao, Fahe ^{[2
]}

Zhang, Jianqing ^{[2
]}

机构：

[1] Shanghai Univ Elect Power, Shanghai Key Lab Mat Protect & Adv Mat Elect Powe, Shanghai 200090, Peoples R China

[2] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China

来源：

CORROSION SCIENCE | 2015年 / 99卷

关键词：

Steel; SEM; X-ray diffraction; Polarization; Atmospheric corrosion; WEATHERING STEELS; CARBON-STEEL; GAMMA-FEOOH; THIN-FILMS; RUST; IRON; TRANSFORMATION; PRODUCTS; CRYSTALLIZATION; ADSORPTION;

D O I：

10.1016/j.corsci.2015.07.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of the direct current (DC) electric field on the initial corrosion of steel in simulated solution were investigated using measurements of weight loss and polarization curves, XRD and SEM techniques. The major constituents of the corrosion products are alpha- and gamma-FeOOH in SO42- solution. It was found that the corrosion rate of steel increased with the increase of DC electric field intensity. And the DC electric field suppresses the growth of alpha-FeOOH and the transformation of gamma-FeOOH to alpha-FeOOH. All these lead to the reduction of the protective ability of rust layer and accelerate further corrosion of steel. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：295 / 303

页数：9

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