Study on the anodizing of AZ31 magnesium alloys in alkaline borate solutions

被引：118

作者：

Wu, C. S.

Zhang, Z.

Cao, F. H.

Zhang, L. J.

Zhang, J. Q.

Cao, C. N.

机构：

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

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

来源：

APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 08期

基金：

中国国家自然科学基金;

关键词：

magnesium alloy; anodization; additive; potentiodynamic polarization; electrochemical impedance spectroscopy;

D O I：

10.1016/j.apsusc.2006.08.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A kind of environmentally friendly anodizing route for magnesium alloys, based on a new kind of organic additive (AA) contained traditional alkaline borate solution and 50 Hz civil ac current, has been studied. It is found that the formation of the anodic films is always coupled with the additive depended sparking and oxygen evolution, and the optimized ivory-white smooth anodic film possesses high corrosion resistance and excellent binding strength to AZ31 substrate. Meanwhile, The results also show that the structure, the corrosion resistance and the morphology of the anodic films are mainly dependent on the anodizing voltage, time and additives. (c) 2006 Published by Elsevier B.V.

引用

页码：3893 / 3898

页数：6

共 25 条

[1] Anodic oxidation of Mg-Cu and Mg-Zn alloys [J].