合金元素对Al-Zn-In系牺牲阳极溶解行为的影响
Influence of Alloying Elements on the Dissolution Behavior of Al-Zn-In Series Sacrificial Anodes
摘 要
通过电化学阻抗、扫描电子显微镜和能谱分析研究了三种不同元素含量的Al-Zn-In牺牲阳极在0.5 mol/L NaCl溶液中的溶解行为和溶解形貌,对比不同合金元素含量牺牲阳极的电化学溶解特征表明,随着铁含量的增加,铝阳极的局部腐蚀敏感性增加,适当提高Zn的含量能有效改善铁含量增加引起的局部腐蚀,但阳极的自腐蚀速度增加.
电化学
扫描电子显微镜
能谱
sacrificial anode
electrochemistry
SEM
EDS
Abstract
The dissolution behavior and microstructure of Al-Zn-In sacrificial anodes with different contents of alloying elements in 0.5 mol/L NaCl solution was investigated using EIS,SEM and EDS.The contrast of electrochemical dissolution characteristics of sacrificial anodes with different contents of alloying elements showed that the sensibility of localized corrosion increased with the increase of iron content,but the increase of zinc content would effectively modify the localized corrosion behavior and increase the corrosion rate of anode.
中图分类号 TG174.41
所属栏目 试验研究
基金项目 国防科技重点实验室项目资助(51449030105JS2705)
收稿日期 2007/11/13
修改稿日期 2008/4/2
网络出版日期
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引用该论文: XING Shao-hua,YAO Ping,YAN Yong-gui,WU Jian-hua. Influence of Alloying Elements on the Dissolution Behavior of Al-Zn-In Series Sacrificial Anodes[J]. Corrosion & Protection, 2008, 29(12): 717～719
被引情况:
【1】张有慧,史大历,张林,杜敏,程国东,赵增元, "铁元素含量对Al-Zn-In-Cd牺牲阳极性能的影响",腐蚀与防护 35, 895-898(2014)
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参考文献
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【2】S B Saidman.Electrochemical behavior of Al-In alloy in chloride solutions[J].Applied electrochemistry,1995,25,252-258.
【3】A Venugopal,R D Angal,VS Raja.Electrochemical evaluation of steps involved in the anodic dissolution of Al-Zn-In anodes in 3.5% NaCl Solution[J].Bulletin of Electrochemistry,1999,12(1-2):93-96.
【4】K K Lee,K B Kim.Electrochemical impedance characteristics of pure Al and Al-Sn alloys in NaOH solution[J].Corrosion Science,2001,43:565-566.
【5】H Sina,M Emamy,M Saremi,et al.The influence of Ti and Zr on the electrochemical properties of aluminum sacrificial anodes[J].Materials Science & Engineering,2006,431:263-276.
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