Influence of pulsed current on the aqueous corrosion resistance of electrodeposited zinc

被引：26
|
作者：
Wasekar, Nitin P. [1 ]
Jyothirmayi, A. [1 ]
Hebalkar, Neha [1 ]
Sundararajan, G. [1 ]
机构：
[1] Int Adv Res Ctr Powder Met & New Mat, Hyderabad 500005, Andhra Pradesh, India
来源：
SURFACE & COATINGS TECHNOLOGY | 2015年 / 272卷
关键词：
Zinc; Electrodeposition; Corrosion; Electrochemical impedance spectroscopy; NANOCRYSTALLINE ZINC; COATINGS; BEHAVIOR; ZN; ALLOYS; DEPOSITION;
D O I：
10.1016/j.surfcoat.2015.03.038
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the present study, the influence of the mode of electrodeposition on the corrosion resistance of zinc (Zn) coating on mild steel substrate has been evaluated. Towards above purpose, Zn coatings were electrodeposited using direct, pulsed and pulse reverse current (PRC). The corrosion resistance was analyzed using electrochemical impedance spectroscopy and potentiodynamic polarization in 3.5% NaCl. The influence of pulse current mode on coating structure and hardness has also been investigated. The results indicate that pulse reverse deposited Zn coatings provide better protection against corrosion. The improved corrosion resistance has been attributed to the microstructure of the PRC coating and also the formation of compact corrosion product. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：373 / 379
页数：7
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