表面氧化对Mg-Hg-Ga合金电化学性能影响  

Effect of surface oxygenation on Mg-Hg-Ga alloy of electrochemical behavior

作　　者：黄锐妮[1] 房娃[1] 贾文彬[1] 孙凯[1] 

机构地区：[1]中国电子科技集团公司第十八研究所,天津300384

出　　处：《电源技术》2013年第3期384-386,共3页Chinese Journal of Power Sources

摘　　要：镁合金阳极材料表面处理后在大气中放一段时间,表面极易发生氧化。针对表面氧化对Mg-Hg-Ga合金电化学性能的影响展开研究,首先采用扫描电子显微镜法(SEM)观察了氧化物的表面形貌及分布,通过恒流极化、动电位扫描、交流阻抗等电化学方法,研究了表面氧化对Mg-Hg-Ga合金电化学性能的影响。研究表明:表面氧化后氧化物分布较为均匀致密,合金腐蚀电流密度降低,电极电位升高,这与析氢测试及交流阻抗的结果相吻合。The surface treated Mg alloy anode materials were placed in the air for a period,its surface can be oxidized easily.The influence of surface oxidation on the electrochemical performance of Mg-Hg-Ga was studied by galvanostatic and electrochemical impedance spectroscopy（EIS）.The surface morphology and distribution was observed by SEM.The results show that the distribution of oxide is uniform and compact after surface oxidation,the corrosion current density of alloy reduces,and the electrode potential increases.The tested results accord with the results of hydrogen evolution test and EIS test.

关 键 词：镁合金 表面氧化 电化学性能 

分 类 号：TM912[电气工程—电力电子与电力传动]