SCN-对Zn-Co合金共沉积Zn转移电流的影响

电化学（中英文） ›› 2003, Vol. 9 ›› Issue (2): 240-244.

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

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 出版日期:2003-05-28 发布日期: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

(Shanghai University, Shanghai 200436 China)

Received:2003-05-28 Revised:2003-05-28 Published:2003-05-28 Online:2003-05-28

摘要/Abstract

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.

关键词: Zn-Co合金, 转移电流, 异常共沉积, 析出过电位

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.

中图分类号:

TQ153

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（中英文）, 2003, 9(2): 240-244.

Yin Ren_he, Cao Wei_min, Fang Zheng_hua . Effect of SCN~- on the Transition Current of Zn during the Electrodeposition Zn-Co Alloys[J]. Journal of Electrochemistry, 2003, 9(2): 240-244.

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https://electrochem.xmu.edu.cn/CN/Y2003/V9/I2/240

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