Influence of Nd addition on the corrosion behavior of Zn-5%Al alloy in 3.5wt.% NaCl solution

被引：47

作者：

Cao, Zujun ^{[1
]}

Kong, Gang ^{[1
]}

Che, Chunshan ^{[1
]}

Wang, Yanqi ^{[1
]}

机构：

[1] South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2017年 / 426卷

基金：

中国国家自然科学基金;

关键词：

Alloy; Zinc; Rare earth elements; EIS; SEM; AL-ZN COATINGS; MECHANICAL-PROPERTIES; MAGNESIUM ALLOY; ATMOSPHERIC CORROSION; GALFAN ALLOY; STEEL; ZINC; ENVIRONMENTS; DISSOLUTION; RESISTANCE;

D O I：

10.1016/j.apsusc.2017.07.109

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：

The effect of Nd addition on the corrosion behavior of Zn-5Al (wt.%) alloy exposed in neutral 3.5 wt.% NaCl solution was investigated by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, open circuit potential, SEM, EDS, XRD and XPS techniques. The results reveal that the addition of Nd increases the corrosion resistance of Zn-5Al alloy, which can be ascribed to the modification of the microstructure and the corrosion products, the improvement of the integrity of Al2O3 film and the inhibition of the selective corrosion of eta-Zn and alpha-Al phases. The corrosion mechanism of Zn-Al eutectic structure is also discussed. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：67 / 76

页数：10

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