东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2005, Vol. 26 ›› Issue (11): 82-85.DOI: -

• 论著 • 上一篇    下一篇

热海水中热浸镀用锌及锌铝合金的电化学性能

李鑫;杜鸿雁;魏绪钧;李焰   

  1. 东北大学材料与冶金学院;重庆大学化学化工学院;东北大学材料与冶金学院;中国科学院海洋研究所 辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2005-11-15 发布日期:2013-06-24
  • 通讯作者: Li, X.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(40306013);;

Electrochemical properties of Zn/Zn-Al alloys as hot-dip galvanized coating protecting steel in hot seawater

Li, Xin (1); Du, Hong-Yan (2); Wei, Xu-Jun (1); Li, Yan (3)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; (2) College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China; (3) Institute of Oceanology, Chinese Academy of Science, Qingdao 266071, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2005-11-15 Published:2013-06-24
  • Contact: Li, X.
  • About author:-
  • Supported by:
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摘要： 为了定量比较不同热浸镀层用金属(或合金)在热海水中对钢铁基体的阴极保护作用,参照国标GB/T 17848-1999的要求对几种典型的热浸镀用锌及锌铝合金测试了50℃条件下的恒电流性能,计算了电流效率,观察了腐蚀产物脱落情况及腐蚀均匀性,并据此评价了它们的电化学保护性能.结果表明:Zn的电化学性能最好,Zn-55Al-1.6Si合金的电化学性能最差,Zn-5Al-0.1RE,Zn-5Al-0.5Mg,Zn-6Al-3Mg,Zn-11Al-0.2Si-3Mg,Zn-25Al-0.2Si-0.2Mg和Zn-25Al-0.2Si-0.2RE合金介于二者之间.

关键词: 热浸镀, 热浸镀层, 阴极保护, 牺牲阳极, 电流效率, 电化学性能

Abstract: To compare quantitatively the cathodic protection effects of Zn and several Zn-Al alloys as hot-dip galvanized coating materials on steel in 50°C seawater, their electrochemical properties were tested with constant current, according to the China national standard GB/T 17848-1999. Their current efficiencies were then calculated with surface's corrosive peeling and homogeneity observed. Thus, their effects of anti-corrosion protection were evaluated. The results showed that the electrochemical properties of such zinc-aluminum alloys as Zn-5Al-0.1RE, Zn-5Al-0.5Mg, Zn-6Al-3Mg, Zn-11Al-0.2Si-3Mg, Zn-25Al-0.2Si-0.2Mg and Zn-25Al-0.2Si-0.2RE are medium, while Zn is the best and Zn-55Al-1.6Si alloy the poorest one.

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