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2012 , Vol. 70 >Issue 02: 128 - 132

DOI: https://doi.org/10.6023/A1106103

研究论文

无锡钢电镀溶液中氟离子电化学行为的研究

  • 李建中 ,
  • 王玉成 ,
  • 田彦文 ,
  • 陶绍虎 ,
  • 孙秀丽
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  • 东北大学材料与冶金学院 沈阳 110004

收稿日期: 2011-06-10

  修回日期: 2011-09-20

  网络出版日期: 2012-02-25

基金资助

国家自然科学基金(No.51004028)和中央高校基本科研业务费(No.N100402002)资助项目.

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Studies of Electrochemistry Properties of F ions in Plating Solution for Tin Free Steel

  • LI Jian-Zhong ,
  • WANG Yu-Cheng ,
  • TIAN Yan-Wen ,
  • TAO Shao-Hu ,
  • SUN Xiu-Li
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  • School of Metallurgy and Materials, Northeastern University, Shenyang 110004

Received date: 2011-06-10

  Revised date: 2011-09-20

  Online published: 2012-02-25

Supported by

Project supported by the National Natural Science Foundation of China (No.51004028) and the Special Fund for Basic Scientific Research of Central Colleges (No.N100402002).

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摘要

采用交流伏安法、电化学阻抗谱(EIS)和Mott-Schottky 分析技术研究了无锡钢电镀液中氟离子电化学行为. 结果表明, 在氧化还原过程中氟离子抑制铬离子化学状态转变, 降低铅合金和铅氧化物阳极的氧化电流密度, 改变铅合金和铅氧化物阳极的氧化还原历程. EIS 结果表明电场作用下溶液中铬氧离子团发生聚合, 在铅合金阳极表面形成感抗现象. 含氟溶液中铬氧离子团在阳极表面的感抗现象消失, 溶液导电性提高. Mott-Schottky 曲线显示氟离子提高阳极材料的载流子密度, 铅合金阳极和铅氧化物阳极均为n 型半导体.

关键词： 无锡钢; 阳极材料; 电化学行为; 氟离子

本文引用格式

李建中 , 王玉成 , 田彦文 , 陶绍虎 , 孙秀丽 . 无锡钢电镀溶液中氟离子电化学行为的研究[J]. 化学学报, 2012 , 70(02) : 128 -132 . DOI: 10.6023/A1106103

Abstract

Electrochemistry action of F ions in the TFS (tin free steel) plating solution was investigated by means of A.C. voltammetry, electrochemical impedance spectrum (EIS) and Mott-Schottky analysis technology. The A.C. voltammetry results showed that F ions have a characteristic of inhibiting the chemical state transition of Cr ions, decreasing the oxide current density of lead alloy and lead oxide anode, and influencing the oxidation and reduction mechanism of lead alloy and lead oxide anode. Polymer for Cr and O ions cluster might be formed under conditions of electric field. In addition, inductive reactance phenomenon was observed on EIS for lead alloy anode in Cr ions solution. The properties of F ions solution were found to eliminate the inductive reactance phenomenon, and increase obviously the conducting ability of Cr ions solution. According to analysis of Mott-Schottky, carrier concentrations of anode materials were increased by being added F ions, and anode of lead alloy and lead oxide exhibited an n-type semiconductive character.

Key words： tin free steel (TFS); anodic material; electrochemical property; F ions

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