Sn及溶液中Sn^(4+)对Al阳极性能和溶解过程的影响  

Effect of alloying element Sn and Sn^(4+) on the properties anddissolution process of Al sacrificial anodes

作　　者：熊伟[1] 齐公台[2] 郭兴蓬[2] 王栾[2] 

机构地区：[1]武汉纺织大学化学与化工学院,湖北武汉430073 [2]华中科技大学化学与化工学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2012年第4期100-103,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50671041)

摘　　要：研究了NaCl溶液中Sn作为合金元素和Sn4+作为溶液中添加离子对Al-Zn-In牺牲阳极电化学性能和溶解过程的影响,并通过扫描电镜和能谱分析考察了阳极溶解前后微观形貌的变化和表面的元素分布.结果显示:Sn明显增加了阳极表面富Zn和In沉积物的数量,使表面更加容易活化,表现出理想的牺牲阳极性能.特别是Sn4+作为溶液中添加离子时活化效果最显著.The effects of alloying element Sn and Sn^4＋ ion in the solution on the electrochemical properties and dissolution process of Al-Zn-In sacrificial anodes were investigated in the NaCI solution. Scanning electron microscopy （SEM） and energy dispersive X-ray analysis （EDX） were employed to study the morphology and distribution of elements. The result shows that Sn enhances the activation and the generation of more deposits where Zn and In are enriched, which are desirable for sacrificial anodes. Especially, the Al anodes, with the addition of Sn^4＋ ion in the solution, exhibit conspicuous activation.

关 键 词：合金元素 阳极 腐蚀 铝阳极 SN 电化学行为 

分 类 号：TG174.41[金属学及工艺—金属表面处理]