有色金属科学与工程2017，Vol.8Issue(3)：54-63,10.DOI:10.13264/j.cnki.ysjskx.2017.03.009
挤压比对海水激活电池用AP65镁合金阳极材料放电性能的影响
Effect of extrusion ratio on discharge performance of AP65 magnesium alloy as anode for seawater activated battery
摘要
Abstract
AP65 magnesium alloy is an attractive candidate for the anode of higher-power seawater activated battery because of its strong discharge activity.In practical applications,plastic forming such as hot extrusion is usually adopted to fabricate the AP65 sheets for serving as the battery anodes.Thus,the extrusion ratio obviously affects the microstructure and discharge behavior of AP65.The effect of different extrusion ratios (8.2∶1,12.3∶1 and 24.5∶1) on the discharge behavior and microstructure of AP65 were systematically investigated.The results indicate that the sample with the extrusion ratio of 12.3∶1 has uniformly refined grains,low density of dislocations,and fractured Al8Mn5 phase,thus leading to more negative discharge potential (-1.780 V vs.SCE) and higher anodic efficiency (87.7±0.2) ％) than other extruded samples.Therefore,the electrochemical performance of AP65 rises first and then declines as the extrusion ratio increases with the extrusion speed of 0.05 m/s at 450 ℃,and the discharge properties achieve the optimal value when the extrusion ratio is close to 12.3:1.关键词
AP65/挤压比/放电活性/阳极利用率/海水激活电池Key words
AP65/extrusion ratio/discharge activity/anodic efficiency/seawater activated battery分类
矿业与冶金引用本文复制引用
张俊昌,冯艳,王乃光,杨明..挤压比对海水激活电池用AP65镁合金阳极材料放电性能的影响[J].有色金属科学与工程,2017,8(3):54-63,10.基金项目
国家自然科学基金资助项目(51401243) （51401243）
湖南省科技计划项目(2015JC3004) （2015JC3004）
