Effects of additives, voltage and their interactions on PEO coatings formed on magnesium alloys

doi:10.1016/j.surfcoat.2018.09.026

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Effects of additives, voltage and their interactions on PEO coatings formed on magnesium alloys
	An, Lingyun; Ma, Ying; Liu, Yunpo; Sun, Le; Wang, Sheng; Wang, Zhanying
刊名	SURFACE & COATINGS TECHNOLOGY
	2018-11-25
卷号	354 页码:226-235
关键词	Magnesium alloys Micro-arc oxidation Plasma electrolytic oxidation Additives Interaction Microstructure Corrosion resistance
ISSN号	0257-8972
DOI	10.1016/j.surfcoat.2018.09.026
英文摘要	Plasma electrolytic oxidation (PEO) coatings were prepared on AZ91D magnesium alloys in an alkaline phosphate-based electrolyte. The effects of K2ZrF6, EDTA-Na, voltage and their interactions on the microstructure and corrosion resistance of these coatings were investigated based on orthogonal experimental design. The thicknesses, phase compositions and morphologies of the coatings were analyzed by using TT260 eddy -current coating thickness measurement gauge, XRD and SEM, respectively. The amount of micro-pores and the porosity on the coating surface were counted quantitatively by Image J software. The electrochemical test was used to evaluate the corrosion resistances of the coatings. The results show that bringing interactions among each factor into the experimental design is the key to this study. And the coating can be remarkably affected not only by the separate functiont of K2ZrF6, EDTA-Na and voltage, but also their interaction. The interaction among K2ZrF6, EDTA-Na and voltage increases the content of the generated substances and inhibits the ejection of these substances out of the discharge channel, which improves the compactness and the thickness of the coatings as well as the content of the corrosion-resistant phase. Therefore, when high concentration of K2ZrF6 and EDTA-Na combines with high voltage, the obtained coating exhibits the optimum comprehensive properties.
资助项目	Department of Science & Technology of Gansu Province (China)[1111RJDA011]
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000447475100026
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32327]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
通讯作者	Ma, Ying
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	An, Lingyun,Ma, Ying,Liu, Yunpo,et al. Effects of additives, voltage and their interactions on PEO coatings formed on magnesium alloys[J]. SURFACE & COATINGS TECHNOLOGY,2018,354:226-235.
APA	An, Lingyun,Ma, Ying,Liu, Yunpo,Sun, Le,Wang, Sheng,&Wang, Zhanying.(2018).Effects of additives, voltage and their interactions on PEO coatings formed on magnesium alloys.SURFACE & COATINGS TECHNOLOGY,354,226-235.
MLA	An, Lingyun,et al."Effects of additives, voltage and their interactions on PEO coatings formed on magnesium alloys".SURFACE & COATINGS TECHNOLOGY 354(2018):226-235.