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碱性锌酸盐体系中Zn-Ni合金镀层的电沉积行为
          
Electroplating Behavior of Zn-Ni Alloys in an Alkaline Electrolyte

摘    要
采用循环伏安技术、计时安培技术和扫描电镜技术研究了碱性锌酸盐体系中Zn-Ni合金镀层在A3钢表面的电沉积行为。结果表明,在Zn-Ni合金镀层共沉积之前,富镍层优先在A3钢表面沉积; 镀液中Zn2+的阴极还原阻碍了Ni2+的阴极还原反应,而Ni2+则促进了Zn2+的电沉积过程; Zn-Ni合金镀层的电沉积过程遵循扩散控制下的二维(2D)成核/生长机制。
标    签 Zn-Ni合金镀层   共沉积   电沉积   Zn-Ni alloy coating   co-deposition   electrodeposition  
 
Abstract
The electroplating behavior of Zn-Ni alloys in an alkaline electrolyte was investigated using cyclic voltammetry (CV), chronoamperometry (CHR), scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) techniques. The results show that a layer of Ni-enriched deposits preferentially formed on A3 steel substrate during the initial electroplating stage of Zn-Ni alloy. The Zn2+ ions in the solution inhibited the reduction of Ni2+ ions, while Ni2+ ions accelerated the reduction reaction of Ni2+ ions. The initial deposition process of Zn-Ni alloy follows the mechanism of 2D nucleation/growth under mass transfer control.

中图分类号 TG174.4

 
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基金项目 国家自然科学基金(21073162; 21273199); 绿色化学合成技术国家重点实验室培育基地开放研究基金(GCTKF2012013)

收稿日期 2013/7/11

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备注郦智斌,高级工程师,硕士,

引用该论文: LI Zhi-bin,LU Wen-shan,ZHANG Zhao. Electroplating Behavior of Zn-Ni Alloys in an Alkaline Electrolyte[J]. Corrosion & Protection, 2013, 34(10): 874


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