PDF全文下载：2011040395
刘欣1,2， 黄印俊1， 毛爱英3， 齐先胜1， 侯保荣2
(1.青岛科技大学 材料科学与工程学院，山东 青岛 266042；2.中国科学院海洋研究所腐蚀中心；山东省腐蚀科学重点实验室，山东 青岛 266071；3.青岛大学 软件技术学院，山东 青岛 266101)
摘要: 在铝合金牺牲阳极表面镀覆了不同厚度的锌层，采用自放电方法分析了镀锌铝合金牺牲阳极的电化学性能，结果表明：镀锌层对电偶电流随时间的变化趋势影响不大，但一定厚度的锌层能使保护电流密度变化更趋平稳；镀锌阳极试样的阴极电位随时间变化总的趋势是先快速下降，而后趋于缓慢下降至稳定，镀锌层越厚阴极电位负移程度越大；镀锌阳极试样表面腐蚀较均匀。
关键词: 铝合金牺牲阳极； 电镀锌； 电偶电流； 阴极电位
中图分类号: TG 174.441； TG 174.41 文献标志码： A
Effect of Galvanizing Treating on Electrochemical Performance of Aluminum Sacrificial Anodes
LIU Xin1,2, HUANG Yin-jun1, MAO Ai-ying3, QI Xian-sheng1, HOU Bao-rong2
(1.College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;
2.Institute of Oceanology Chinese Academy of Sciences, Corrosion Protection Center, Qingdao 266071, China;
3. Software Technical College, Qingdao University, Qingdao 266101, China)
Abstract: The surface of Al alloy-based sacrificial anode was galvanized with different thickness, and the electrochemical performances of the anodes were analyzed by self-discharge method. The results showed that there were few influences of Zn layer thickness on the couple current change versus time, but the variation of the protection couple current tends to be smoother for anodes with appropriate thickness of Zn layer.The changes of cathode potential of galvanizing anode sample versus time decrease rapidly,slowly,and stably at the end.The negative shift degree of cathode potential was more for anode with thicker Zn layer.The surface corrosion of galvanizing sample showed even at different positions.
Key words: Al alloy-based sacrificial anode; galvanizing; couple current; cathode potential
收稿日期:2011-03-14
基金项目： 青岛科技大学科研启动基金项目(0022378)；中科院海洋研究所腐蚀中心开放课题项目(200901006)．
作者简介： 刘欣(1978—)，女，博士，讲师．
