Effect of alternating voltage treatment on the corrosion resistance of pure magnesium

被引：50

作者：

Liu, Xiaolan ^{[1
]}

Zhang, Tao ^{[1
,2
]}

Shao, Yawei ^{[1
,2
]}

Meng, Guozhe ^{[1
,2
]}

Wang, Fuhui ^{[1
,2
]}

机构：

[1] Harbin Engn Univ, Minist Educ, Corros & Protect Lab, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

来源：

CORROSION SCIENCE | 2009年 / 51卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Magnesium; Polarization; EIS; XPS; Pitting corrosion; PLASMA ELECTROLYTIC OXIDATION; CONVERSION COATINGS; PASSIVE FILM; ALLOY; BEHAVIOR; AZ91D; PERFORMANCE; STANNATE;

D O I：

10.1016/j.corsci.2009.05.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pure magnesium was treated by alternating voltage (AV) treatment technique. The optimal AV-treatment parameters for greatly improving corrosion resistance were determined by the orthogonal experiments. Polarization curves, electrochemical impedance spectroscopy (EIS), and scanning electrochemical microscopy (SECM) were performed to understand the effect of AV-treatment on the corrosion resistance of pure magnesium. AFM, contact angle measurement and XPS were employed to further investigate the influence of AV-treatment on the properties of the surface film formed on pure magnesium after AV-treatment. The results showed that a uniform and stable film was formed and the corrosion resistance of pure magnesium was greatly improved after AV-treatment. This was caused by the noticeable change of chemical structure and semi conducting properties of surface film after AV-treatment. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1772 / 1779

页数：8

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