Effect of additives on the properties of plasma electrolytic oxidation coatings formed on AM50 magnesium alloy in electrolytes containing K(2)ZrF(6)

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	Effect of additives on the properties of plasma electrolytic oxidation coatings formed on AM50 magnesium alloy in electrolytes containing K(2)ZrF(6)
	F. Liu; D. Y. Shan; Y. W. Song; E. H. Han
	2011
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	206 期号:2-3 页码:455-463
摘要	A plasma electrolytic oxidation (PEO) coating on AM50 magnesium alloy was obtained in a K(2)ZrF(6)-NH(4)H(2)PO(4)-KF-C(6)H(5)O(7)Na(3) electrolyte solution. The influence of the electrolytes on the properties of the PEO coating had been investigated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), roughness determination and electrochemical measurements. The experimental results show that 10 g L(-1) K(2)ZrF(6) and the presence of 8 g L(-1) NH(4)H(2)O(4) are beneficial for the passivation effect of the solution on AM50 Mg alloy as well as the compactness of the PEO coating. Many pores with large dimension on the surface of the coating are filled with coating compounds (mainly MgF(2)), and the characteristics of these pores are influenced by the concentration of KF. The addition of KF and C(6)H(5)O(7)Na(3) enhances the growth rate of the coating. The coating shows high corrosion resistance in the presence of 10 g L(-1) K(2)ZrF(6) combined with 8 g L(-1) NH(4)H(2)PO(4), 3 g L(-1) KF and 5 g L(-1) C(6)H(5)O(7)Na(3). (C) 2011 Elsevier B.V. All rights reserved.
部门归属	[liu, feng; shan, dayong; song, yingwei; han, en-hou] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;shan, dy (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;dyshan@imr.ac.cn
关键词	Peo Coating Magnesium Anodizing Corrosion Resistance Electrolytes Electrochemical Corrosion Behavior Microarc Oxidation Lightweight Materials Composite Coatings Ceramic Coatings Mg Alloy Az91d Resistance Silicate Surface
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30511
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. Liu,D. Y. Shan,Y. W. Song,et al. Effect of additives on the properties of plasma electrolytic oxidation coatings formed on AM50 magnesium alloy in electrolytes containing K(2)ZrF(6)[J]. Surface & Coatings Technology,2011,206(2-3):455-463.
APA	F. Liu,D. Y. Shan,Y. W. Song,&E. H. Han.(2011).Effect of additives on the properties of plasma electrolytic oxidation coatings formed on AM50 magnesium alloy in electrolytes containing K(2)ZrF(6).Surface & Coatings Technology,206(2-3),455-463.
MLA	F. Liu,et al."Effect of additives on the properties of plasma electrolytic oxidation coatings formed on AM50 magnesium alloy in electrolytes containing K(2)ZrF(6)".Surface & Coatings Technology 206.2-3(2011):455-463.