Electrodeposition of high corrosion resistance Cu/Ni-P coating on AZ91D magnesium alloy

IMR OpenIR

	Electrodeposition of high corrosion resistance Cu/Ni-P coating on AZ91D magnesium alloy
	S. Zhang; F. H. Cao; L. R. Chang; J. J. Zheng; Z. Zhang; J. Q. Zhang; C. A. Cao
	2011
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	257 期号:21 页码:9213-9220
摘要	High corrosion resistance Cu/Ni-P coatings were electrodeposited on AZ91D magnesium alloy via suitable pretreatments, such as one-step acid pickling-activation, once zinc immersion and environment-friendly electroplated copper as the protective under-layer, which made Ni-P deposit on AZ91D Mg alloy in acid plating baths successfully. The pH value and current density for Ni-P electrodeposition were optimized to obtain high corrosion resistance. With increasing the phosphorous content of the Ni-P coatings, the deposits were found to gradually transform to amorphous structure and the corrosion resistance increased synchronously. The anticorrosion ability of AZ91D Mg alloy was greatly improved by the amorphous Ni-P deposits, which was investigated by potentiodynamic polarization curve and electrochemical impedance spectroscopy (EIS). The corrosion current density (I(corr)) of the coated Mg alloy substrate is about two orders of magnitude less than that of the uncoated. (C) 2011 Elsevier B. V. All rights reserved.
部门归属	[zhang, shan; cao, fahe; chang, linrong; zheng, junjun; zhang, zhao; zhang, jianqing; cao, chunan] zhejiang univ, dept chem, hangzhou 310027, peoples r china. [zhang, jianqing; cao, chunan] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;cao, fh (reprint author), zhejiang univ, dept chem, hangzhou 310027, peoples r china;nelson_cao@zju.edu.cn
关键词	Az91d Mg Alloy Electrodeposition Ni-p Corrosion Resistance Phosphorus Incorporation Pure Magnesium Thin-films Ni Pretreatment Deposits Behavior Copper
URL	查看原文
WOS记录号	WOS:000292539700072
引用统计	被引频次：49[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30907
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Zhang,F. H. Cao,L. R. Chang,et al. Electrodeposition of high corrosion resistance Cu/Ni-P coating on AZ91D magnesium alloy[J]. Applied Surface Science,2011,257(21):9213-9220.
APA	S. Zhang.,F. H. Cao.,L. R. Chang.,J. J. Zheng.,Z. Zhang.,...&C. A. Cao.(2011).Electrodeposition of high corrosion resistance Cu/Ni-P coating on AZ91D magnesium alloy.Applied Surface Science,257(21),9213-9220.
MLA	S. Zhang,et al."Electrodeposition of high corrosion resistance Cu/Ni-P coating on AZ91D magnesium alloy".Applied Surface Science 257.21(2011):9213-9220.