Zn-10% Al-RE镀层钢丝组织及耐蚀性
Microstructure and Anti-corrosion Property of Zn-10% Al-RE Coated Steel Wire
摘 要
采用双镀法制备了Zn-10% Al-RE镀层钢丝.采用等离子体发射(ICP)光谱、SEM分析了合金镀液化学成分、镀层的化学成分以及组织结构,并与锌镀层进行了比较,结果表明,Zn-10% Al-RE镀层中总混合稀土含量远低于合金镀液中的稀土含量.采用电化学分析和中性盐雾试验法对两种镀层的耐蚀性进行比较,结果表明,Zn-10% Al-RE镀层钢丝的自腐蚀电流密度约为锌镀层的二十分之一,中性盐雾腐蚀失重约为锌镀层的三分之一,说明Zn-10% Al-RE镀层钢丝的耐蚀性远远优于锌镀层钢丝.
高耐蚀性
稀土
锌镀层钢丝
Zn-10% Al-RE coated steel wire
high anti-corrosion
rare earth element
Zn coated steel wire
Abstract
Zn-10% Al-RE coated steel wire was made by dual hot dipping method.The chemical compositions of alloy bath and Zn-10% Al-RE coating were analyzed by inductively coupled plasma (ICP) atomic emission spectrometry.The results showed that the content of RE in the Zn-10% Al-RE coating was far less than that in the alloy bath.The microstructures of Zn-10% Al-RE coating and Zn coating were examined and compared by SEM.The anti-corrosion property of both coatings was also analyzed by electrochemical and neural salt spraying (NSS) methods.The results showed that the corrosion current of Zn-10% Al-RE coating was about one twentieth of that of zinc coatings.The weight loss of Zn-10% Al-RE coating was one third of that of Zn coating,which proved that the anti-corrosion property of Zn-10% Al-RE coating was highly superior to that of Zn coating.
中图分类号 TG174
所属栏目 镀层专题
基金项目 国家电网公司总部指南项目
收稿日期 2014/6/21
修改稿日期
网络出版日期
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备注李远鹏(1983-),工程师,博士,从事热镀锌技术研究.
引用该论文: WANG Yong-liang,LI Yuan-peng,YANG Guang-nuo,ZHANG Yu,BAI Yao,ZHANG Qi-fu. Microstructure and Anti-corrosion Property of Zn-10% Al-RE Coated Steel Wire[J]. Corrosion & Protection, 2015, 36(5): 419
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参考文献
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