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Effect of Sn content on the properties of passive film on PbSn alloy in sulfuric acid solution

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Abstract

The effect of Sn content on properties of anodic film formed on PbSn alloys in sulfuric acid solution was investigated using linear sweeping voltage (LSV), cyclic voltammetry (CV), and a.c. voltammetry (ACV), based on the Mott-Schottky analysis. The results revealed that the addition of Sn into lead alloys can promote the corrosion resistance property and could decrease the impedance of anodic film; these results were more remarkable with enhancing the Sn content. The over potential of oxygen evolution on lead alloys enhanced with the increase of Sn content. The Mott-Schottky analysis indicated that the passive film appeared an n-type semiconductor, and the donor density of passive film increased with increasing Sn content. The increased vacancies in the passive film with Sn content increasing could illustrate this trend.

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Authors and Affiliations

  1. State Key Laboratory for Mechanical Behaviors of Materials, Xi’an Jiaotong University, Xi’an, 710049, China

    Li DangGuo, Zhou GenShu, Zhang Juan & Zheng MaoSheng

Authors
  1. Li DangGuo
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  2. Zhou GenShu
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  3. Zhang Juan
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  4. Zheng MaoSheng
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Correspondence to Li DangGuo.

Additional information

Supported by the Innovation Fund for Small Technology Based Firms of National Science and Technology Administration (Grant No. 03C26216111166)

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Li, D., Zhou, G., Zhang, J. et al. Effect of Sn content on the properties of passive film on PbSn alloy in sulfuric acid solution. SCI CHINA SER B 50, 501–504 (2007). https://doi.org/10.1007/s11426-007-0091-z

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  • DOI: https://doi.org/10.1007/s11426-007-0091-z

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