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

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	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
刊名	Applied Surface Science
	2011
卷号	257 期号:21 页码:9213-9220
关键词	AZ91D Mg alloy Electrodeposition Ni-P Corrosion resistance phosphorus incorporation pure magnesium thin-films ni pretreatment deposits behavior copper
ISSN号	0169-4332
中文摘要	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.
原文出处	://WOS:000292539700072
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30907]
专题	金属研究所_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.