铝合金牺牲阳极失效分析  

Failure Analysis on Aluminum Sacrificial Anode

作　　者：刘晓军[1] 白荣国[2] 刘飞华[1] 崔智勇[2] 费克勋[1] 李岩[1] 

机构地区：[1]苏州热工研究院,江苏苏州215004 [2]大亚湾核电运营管理有限责任公司,广东深圳518124

出　　处：《全面腐蚀控制》2011年第5期31-33,30,共4页Total Corrosion Control

摘　　要：通过化学成份分析、电化学性能测试及电化学阻抗谱对铝合金牺牲阳极不溶解原因进行分析,结果表明,Cu、Fe、Si含量过高导致牺牲阳极不溶解、电化学性能差。电化学阻抗谱研究表明牺牲阳极在加速试验过程中,经过初期活化后表面迅速钝化,阻止了进一步溶解。Chemical composition analysis and electrochemical property test and Electrochemical impendence spectroscopy were applied to analysis the failure of aluminum anode,result shows that excessive contents of Cu、Fe、Si lead to insoluble of anode and degrade electrochemical property.EIS results showed surface passivation occurred during impressed current accelerate test,and further dissolution was prevented.

关 键 词：铝合金 牺牲阳极 化学成份 电化学阻抗谱 

分 类 号：TG174.3[金属学及工艺—金属表面处理]