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研究论文

SCN-对Zn-Co合金共沉积Zn转移电流的影响

  • 印仁和 ,
  • 曹为民 ,
  • 方正华
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  • 上海大学理学院化学系,上海大学理学院化学系,上海大学理学院化学系 上海200436 ,上海200436 ,上海200436

收稿日期: 2003-05-28

  修回日期: 2003-05-28

  网络出版日期: 2003-05-28

Effect of SCN~- on the Transition Current of Zn during the Electrodeposition Zn-Co Alloys

  • Yin Ren_he ,
  • Cao Wei_min ,
  • Fang Zheng_hua
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  • (Shanghai University, Shanghai 200436 China)

Received date: 2003-05-28

  Revised date: 2003-05-28

  Online published: 2003-05-28

摘要

在硫酸盐电解液中的Zn_Co合金共沉积,存在着由正常共沉积转变成异常共沉积的Zn转移电流密度,该值随着电解液中所含SCN-浓度的增加而增加,pH值的增加而减小.这主要是因为SCN-降低了Co的析出过电位,但不影响Zn及H2的析出过电位之故.

本文引用格式

印仁和 , 曹为民 , 方正华 . SCN-对Zn-Co合金共沉积Zn转移电流的影响[J]. 电化学, 2003 , 9(2) : 240 -244 . DOI: 10.61558/2993-074X.1512

Abstract

For co_deposition of Zn_Co alloys at sufphate baths with micro_concentration of SCN- the transition current of Zn was found with the deposition process changing from normal Co_deposition to anomalous co_deposition, and the value of transition current increased with increasing SCN- concentration, but decreased with increasing value of pH. The existence of SCN- decreases the evolution overpotential of Co metal, but has no effects on the evolution overpotential of Zn metal and H2.

参考文献

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