Electrochemical impedance spectroscopic investigation of the role of alkaline pre-treatment in corrosion resistance of a silane coating on magnesium alloy, ZE41

被引：118

作者：

Banerjee, P. Chakraborty ^{[2
,3
]}

Raman, R. K. Singh ^{[1
,2
]}

机构：

[1] Monash Univ, Dept Mech & Aerosp Engn, Clayton, Vic 3800, Australia

[2] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia

[3] CAST Cooperat Res Ctr, Hawthorn, Vic 3122, Australia

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 11期

关键词：

Silane coating; Electrochemical impedance spectroscopy; Magnesium alloys; DIFFERENT MICROSTRUCTURAL REGIONS; PLASMA ELECTROLYTIC OXIDATION; SURFACE PRETREATMENT; ALUMINUM SURFACES; AL; 2024-T3; BEHAVIOR; FILMS; BTSE; ORGANOSILANES; ADSORPTION;

D O I：

10.1016/j.electacta.2011.02.050

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

The protective performance of the coatings of bis-1,2-(triethoxysilyl) ethane (BTSE) on ZE41 magnesium alloy with different surface pre-treatments were evaluated using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in 0.1 M sodium chloride solution. Electrical equivalent circuits were developed based upon hypothetical corrosion mechanisms and simulated to correspond to the experimental data. The morphology and cross section of the alloy subjected to different pre-treatments and coatings were characterized using scanning electron microscope. A specific alkaline pre-treatment of the substrate prior to the coating has been found to improve the corrosion resistance of the alloy. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：3790 / 3798

页数：9

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