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

IMR OpenIR

	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.
	2018-04-01
发表期刊	MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
ISSN	0947-5117
卷号	69 期号:4 页码:-
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.
部门归属	[dong, kaihui ; song, yingwei ; shan, dayong ; han, en-hou] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, liaoning, peoples r china
关键词	Corrosion-resistance Mg Alloy Aluminum-alloys Coatings Protection Electrodeposition Microstructure Mechanism Substrate Stannate
学科领域	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	National Key Research and Development Program of China [2016YFB0301105]; National Natural Science Foundation of China [51671199]; National Key Basic Research Program of China [2013CB632205]
收录类别	SCI
语种	英语
WOS记录号	WOS:000432629300005
引用统计	被引频次：10[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/321006/79379
专题	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):-.