Experimental study of electrochemical corrosion behaviour of bilayer on AZ31B Mg alloy

被引：48

作者：

Guo, Xinghua ^{[1
,2
]}

An, Maozhong ^{[1
,3
]}

机构：

[1] Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150006, Peoples R China

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

[3] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150006, Peoples R China

来源：

CORROSION SCIENCE | 2010年 / 52卷 / 12期

关键词：

Mg; Organic coatings; EIS; Anodic films; PLASMA ELECTROLYTIC OXIDATION; SNAP SURFACE TREATMENTS; MICRO-ARC OXIDATION; SOL-GEL COATINGS; MAGNESIUM ALLOY; CONVERSION COATINGS; CERAMIC COATINGS; GALVANIZED STEEL; PROTECTION; ALUMINUM;

D O I：

10.1016/j.corsci.2010.08.017

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

A bilayer on AZ31B magnesium alloy was prepared by first applying anodization to modify the substrate, and then depositing a self-assembled nanophase particle (SANP) film. Structure and corrosion behaviour are characterized by scanning electron microscopy, energy dispersion spectrometry, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscope and electrochemical impedance spectroscopy. Experimental results indicate that the bilayer consists of a SNAP/loose layer and a dense layer, and provides the corrosion protection of Mg substrate for more than 354 h in 0.005 M NaCl solution. Therefore, the bilayer is effective to protect Mg alloy against corrosion for a long time. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：4017 / 4027

页数：11

共 38 条

[1]

Analysis of the electrochemical reaction behavior of alloy AZ91 by EIS technique in H3PO4/KOH buffered K2SO4 solutions [J].