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Comparative study on corrosion protection properties of electroless Ni-P-ZrO2 and Ni-P coatings on AZ91D magnesium alloy
Song, Y. W.; Shan, D. Y.; Han, E. H.
Corresponding AuthorHan, E. H.(ehhan@imr.ac.cn)
2007-07-01
Source PublicationMATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
ISSN0947-5117
Volume58Issue:7Pages:506-510
AbstractElectroless Ni-P-ZrO2 and Ni-P coatings on AZ91D magnesium alloy were prepared, and their corrosion protection properties were compared in this paper. The potentiodynamic curves and electrochemical impedance spectroscopy (EIS) of the coated magnesium alloy in 3.5% NaCl solution showed that the corrosion performance of Ni-P-ZrO2 composite coating was superior to that of Ni-P coating. The same conclusion was obtained with salt spray and immersion tests. The corrosion morphologies of two kinds of coatings with various immersion time intervals in 3.5% NaCl solution indicated that most corrosion products concentrated on the nodules boundaries of Ni-P coating and blocked corrosion pit was the main corrosion form. For the Ni-P-ZrO2 coating, tortuous nodules boundaries were not the weak sites of the coating and corrosion initiated from the nickel phosphor alloy around the nanometer powders. Open corrosion pits occurred on the composite coating surface, and the coating was corroded gradually. Thus, the Ni-PZrO2 coating exhibited better corrosion protection property to magnesium alloy substrate than Ni-P coating.
DOI10.1002/maco.200604033
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000248232300003
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/90591
Collection中国科学院金属研究所
Corresponding AuthorHan, E. H.
AffiliationChinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Song, Y. W.,Shan, D. Y.,Han, E. H.. Comparative study on corrosion protection properties of electroless Ni-P-ZrO2 and Ni-P coatings on AZ91D magnesium alloy[J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,2007,58(7):506-510.
APA Song, Y. W.,Shan, D. Y.,&Han, E. H..(2007).Comparative study on corrosion protection properties of electroless Ni-P-ZrO2 and Ni-P coatings on AZ91D magnesium alloy.MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION,58(7),506-510.
MLA Song, Y. W.,et al."Comparative study on corrosion protection properties of electroless Ni-P-ZrO2 and Ni-P coatings on AZ91D magnesium alloy".MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION 58.7(2007):506-510.
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