An optimization of pretreatment for the phosphate conversion film on WE43 magnesium alloy

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	An optimization of pretreatment for the phosphate conversion film on WE43 magnesium alloy
	Dong, KH; Song, YW; Shan, DY; Han, EH; Song, YW (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China.
刊名	MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
	2018-04-01
卷号	69 期号:4 页码:-
关键词	Corrosion-resistance Mg Alloy Aluminum-alloys Coatings Protection Electrodeposition Microstructure Mechanism Substrate Stannate
ISSN号	0947-5117
英文摘要	A two-step method pretreatment was used to optimize the phosphate conversion film on WE43 magnesium alloy. The surface status of the pretreatment layers and their effect on the formation processes of phosphate conversion films were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) analyses. It was found that the second phases on the grain boundaries of WE43 were dissolved completely by two-step method pretreatment. The thin pretreatment film first flaked off in the phosphate process, resulting in a more uniform surface status. Then, the phosphate particles were deposited more homogeneously. Combined with the electrochemical impedance spectroscopy (EIS) and immersion test results, the optimized pretreatment greatly improved the compactness of the conversion films, further to enhance its protective ability to Mg substrate.; A two-step method pretreatment was used to optimize the phosphate conversion film on WE43 magnesium alloy. The surface status of the pretreatment layers and their effect on the formation processes of phosphate conversion films were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) analyses. It was found that the second phases on the grain boundaries of WE43 were dissolved completely by two-step method pretreatment. The thin pretreatment film first flaked off in the phosphate process, resulting in a more uniform surface status. Then, the phosphate particles were deposited more homogeneously. Combined with the electrochemical impedance spectroscopy (EIS) and immersion test results, the optimized pretreatment greatly improved the compactness of the conversion films, further to enhance its protective ability to Mg substrate.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
资助机构	National Key Research and Development Program of China [2016YFB0301105]; National Natural Science Foundation of China [51671199]; National Key Basic Research Program of China [2013CB632205]
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79379]
专题	金属研究所_中国科学院金属研究所
通讯作者	Song, YW (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Dong, KH,Song, YW,Shan, DY,et al. An optimization of pretreatment for the phosphate conversion film on WE43 magnesium alloy[J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,2018,69(4):-.
APA	Dong, KH,Song, YW,Shan, DY,Han, EH,&Song, YW .(2018).An optimization of pretreatment for the phosphate conversion film on WE43 magnesium alloy.MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,69(4),-.
MLA	Dong, KH,et al."An optimization of pretreatment for the phosphate conversion film on WE43 magnesium alloy".MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION 69.4(2018):-.