(中南大学 化学化工学院 化学电源与材料研究所，长沙 410083)
摘 要: 应用线性电位扫描、 计时电势分析法、 交流伏安法和腐蚀质量损失法研究在含砷锡的低锑合金中添加混合稀土(85%Ce, 10%Y， 3%La)对合金性能的影响， 利用金相显微镜观察合金的微观组织。结果表明: 富铈稀土能细化铅锑合金晶粒， 薄化晶界， 减少晶体缺陷， 降低整体腐蚀速度和腐蚀的危害性； 富铈稀土能抑制阳极膜中的PbO生长， 生成的PbO也易于还原， 降低阳极膜的阻抗, 提高板栅合金的深循环性能； 当富铈稀土含量为0.5%时， 铈与铅生成金属间化合物(PbxCey)， 锑在合金中分布均匀。
关键字: 铅锑合金； 富铈稀土； 铅酸蓄电池
of Sb-low lead alloy
（Institute of Chemical Power Source and Material,
School of Chemistry and Chemical Engineering,
Central South University, Changsha 410083, China）
Abstract: The effect of Ce rich rare earths(85%Ce, 10%Y，3%La) on the performance of lead-low antimony alloy was studied using linear sweep voltammetry, chronopotentiometry, AC voltammetry and corrosion mass loss. The microscopic structure was observed in metallomicroscope. The results show that the addition of Ce rich rare earths can minish the crystal grain and thin the grain boundary; it can also decrease the crystal defects, slow down total corrosion and reduce harm of corrosion; it also makes PbO of anode film easier deoxidized, and can restrain the creation of PbO in the corrosion film, so the resistance of anode film is reduced, and the capability of deep cycle can be increased. The metal compound (PbxCey) is observed and antimony is even in the alloy when the content of rich Ce rare earths is 0.5%.
Key words: Pb-Sb alloy; Ce rich rare earths; lead-acid batteries
