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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.
2018-04-01
Source PublicationMATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
ISSN0947-5117
Volume69Issue:4Pages:-
AbstractA 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.
description.department[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
KeywordCorrosion-resistance Mg Alloy Aluminum-alloys Coatings Protection Electrodeposition Microstructure Mechanism Substrate Stannate
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Key Research and Development Program of China [2016YFB0301105]; National Natural Science Foundation of China [51671199]; National Key Basic Research Program of China [2013CB632205]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79379
Collection中国科学院金属研究所
Corresponding AuthorSong, YW (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
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):-.
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