磁场凝固处理对铅锑合金微观结构的影响  

Effect of solidification on electrochemical performance of Pb alloy in magnetic field

作　　者：贺小红[1] 唐有根[1] 陈美洁[1] 杨习文[1] 

机构地区：[1]中南大学化学化工学院化学电源与材料研究所,湖南长沙410083

出　　处：《电源技术》2007年第12期1004-1007,共4页Chinese Journal of Power Sources

摘　　要：采用金相显微镜和电镜扫描观察Pb-Sb-Ce合金的微观组织形态,研究磁场作用下凝固处理对含Ce稀土的铅锑合金微观结构的影响;循环伏安法研究磁场作用下凝固处理的Pb-Sb-Ce合金电极在1.285g/cm3硫酸溶液中和-1.4～1.8V(vs.Hg/Hg2SO4)电位范围内的电化学特性,并应用阴极极化曲线研究上述合金在相同溶液中的析氢性能。结果表明,磁场作用下凝固处理Pb-Sb-Ce合金可以有效地消除宏观偏析,碎断枝晶,使晶粒细化,晶粒数目增加;提高合金的深循环性能,减缓了早期容量的衰减,降低电池工作时的析氢量,减少电解液的损失。The effects of solidification on the electrochemical properties of the rare earth Pb-Sb-Ce alloy in magnetic field was studied by cyclic voltammetry; and the hydrogen evolution properties of rare earth Pb-Sb-Ce alloy in magnetic field was analyzed by cathodic polarization curve, The results show that the solidification can improve the performance of lead acid batteries, suppress the capability fading in the early stage, lower the hydrogen evolution of charging battery ,and decrease electrolyte Iossing.

关 键 词：稀土铅合金 循环伏安 阴极极化 磁场 凝固 

分 类 号：TM912.1[电气工程—电力电子与电力传动]