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

doi:10.61558/2993-074X.1512

电化学 >

2003 , Vol. 9 >Issue 2: 240 - 244

DOI: https://doi.org/10.61558/2993-074X.1512

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

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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

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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

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.

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