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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (7): 584-588. 上一篇    下一篇

研究论文

铅铈和铅钙锡合金阳极腐蚀膜的性能研究

李党国, 周根树*, 姚靓, 郑茂盛   

  1. (西安交通大学金属材料强度国家重点实验室 西安 710049)
  • 投稿日期:2006-03-08 修回日期:2006-12-27 发布日期:2007-04-14
  • 通讯作者: 周根树

Investigation on Properties of Anodic Corrosion Films Formed on Pb-Ce and Pb-Ca-Sn Alloys

LI Dang-Guo; ZHOU Gen-Shu*; YAO Liang; ZHENG Mao-Sheng   

  1. (State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049)
  • Received:2006-03-08 Revised:2006-12-27 Published:2007-04-14
  • Contact: ZHOU Gen-Shu

PDF

1173

被引次数

25 | 5

利用叠加交流伏安法、线性电位扫描法、交流阻抗技术和XPS研究了铅铈合金和铅钙锡合金在阳极1.28 V, 4.5 mol/L的硫酸溶液中所形成的阳极腐蚀膜. 结果表明: 稀土铈能抑制阳极膜中高阻抗的Pb(II)化合物的生长, 降低腐蚀膜的阻抗, 并增加膜的孔隙率. 同时可以提高合金的析氢过电位, 有利于电池免维护性能的提高.

关键词: 叠加交流伏安, 线性电位扫描, 交流阻抗, XPS, 铅铈合金

The anodic corrosion films of Pb-Ce and Pb-Ca-Sn alloys formed at 1.28 V in 4.5 mol/L H2SO4 were investigated by means of linear sweep voltage (LSV), AC voltage, AC impedance and X-ray photoelectron spectrosocopy (XPS). The results showed that the growth of the Pb(II) compounds in the anodic film was inhibited, and Ce could also decrease the electric resistance of the corrosion films and increase the porosity. The over-potential of hydrogen evolution on lead alloy with Ce additive increased, which was helpful to improve the maintenance-free property of lead acid battery.

Key words: AC voltage, linear sweep voltage, AC impedance, XPS, Pb-Ce alloy