均匀化方式对Al-Zn-Sn系合金电化学性能的影响
Effect of Homogenization on Electrochemical Properties of Al-Zn-Sn Series Alloy Anodes
摘 要
研究了不同均匀化冷却方式对Al-Zn-Sn-Ga-Bi牺牲阳极合金的影响.结果表明,热处理后合金的电流效率均在95%以上,工作电位负移且平稳；退火态阳极合金的电流效率稍高,但溶解形貌较差,淬火态试样工作电位更负,溶解形貌均匀,显示出更好的综合电化学性能.热处理过程中活化元素的存在状态发生改变,导致活化过程主导因素的不同,最终引起溶解形貌的差异.
电化学性能
溶解形貌
第二相
溶解-再沉积
aluminum sacrificial anode
electrochemical property
dissolution appearance
second phase
dissolution-deposition
Abstract
The effect of homogenization with different cooling methods on electrochemical properties of Al-Zn-Sn-Ga-Bi alloy was studied.The results showed that after heat treatment,the current efficiency of the alloy was over 95%,the operating potential shifted negatively and became smooth within 10 days.Although the current efficiency of the annealed alloy anode was higher slightly,the quenched sample had more negative potential and uniform dissolution appearance,and thus showed a better electrochemical performance on the whole.The change of dominant factors in the activation process led to the difference of dissolution appearance,due to the changes of the existence state of activation elements in the matrix in the heat-treatment process.
中图分类号 TG174.3+6 TG166.3
所属栏目 试验研究
基金项目 河南省科技创新杰出人才计划(094200510019)；河南省自然科学基金项目(092300410132)
收稿日期 2009/10/30
修改稿日期 2009/11/19
网络出版日期
作者单位点击查看
备注王国伟,硕士研究生.
引用该论文: WANG Guo-wei,WEN Jiu-ba,MA Jing-ling,HE Jun-guang,SHI Zhi-hong. Effect of Homogenization on Electrochemical Properties of Al-Zn-Sn Series Alloy Anodes[J]. Corrosion & Protection, 2010, 31(8): 611～614
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【9】Maria Nestoridi,Derek Pletcher,Robert J K.Wood The study of aluminum anodes for high power density Al/air batteries with brine electrolytes[J].Journal of Power Sources,2008,178:445-455.
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