期刊
ELECTROCHIMICA ACTA
卷 54, 期 4, 页码 1204-1209出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2008.08.063
关键词
Zinc alloys; Rare earths; Corrosion behaviour; Sodium chloride solution; EIS
The effect of rare earth metal (Gd, Dy, Er, and Y) small additions on the corrosion behaviour of Zn-5% Al (Galfan) alloy has been investigated. The corrosion resistance of Zn-5Al-0.1Gd, Zn-5Al-0.1 Dy, Zn-5Al-0.1Er. and Zn-5Al-0.1Y alloys has been assessed by electrochemical impedance spectroscopy (EIS) measurements carried out in a 0.1 M NaCl solution, at approximately neutral pH, without stirring and in contact with the air. For comparison, the electrochemical tests have also been carried out on the Galfan alloy. EIS results showed that rate earths' addition significantly improves the corrosion behaviour of Galfan. This improvement is most likely due to enhanced barrier properties of the corrosion products layer and additional active corrosion protection originated from the inhibiting action of the lanthanide ions entrapped as oxides/hydroxides in this surface layer. (C) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据