Investigation on the corrosion behaviour and microstructure of 2024-T3 Al alloy treated via plasma electrolytic oxidation

被引：77

作者：

Fadaee, Hossein ^{[1
]}

Javidi, Mehdi ^{[1
]}

机构：

[1] Shiraz Univ, Sch Engn, Dept Mat Sci & Engn, Shiraz 7134851154, Iran

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 604卷

关键词：

Plasma electrolytic oxidation; 2024-T3; Tafel plot; EIS; Glycerine; Corrosion; MICRO-ARC OXIDATION; ALUMINUM-ALLOY; CERAMIC COATINGS; MAGNESIUM ALLOY; CURRENT-DENSITY; OXIDE LAYERS; RESISTANCE; PARTICLES; SILICATE; AL2O3;

D O I：

10.1016/j.jallcom.2014.03.127

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：

Plasma electrolytic oxidation treatment was performed on 2024-T3 aluminium alloy in a simple and inexpensive electrolyte. It was found that treatment time of 30 min resulted in the most noble corrosion potential and lowest corrosion current density. The surface and cross-sectional morphology indicated that the coating has a dense structure without any cracking. Furthermore, the result of X-ray diffraction analysis indicated that the coating was formed mainly from alpha-Al2O3, gamma-Al2O3, Al3.21Si0.47 and small amounts of amorphous phases. The presence of glycerine in the electrolyte composition resulted in not only stabilising the solution but also improving the corrosion resistance. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：36 / 42

页数：7

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