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In vitro study on degradation of AZ31B magnesium alloy with fluoride conversion coating
Li, Q.1; Zhu, P.1; Chen, S.2; Zhang, B.2; Yang, K.2
Corresponding AuthorChen, S.(sschen@imr.ac.cn)
2017
Source PublicationMATERIALS TECHNOLOGY
ISSN1066-7857
Volume32Issue:7Pages:409-414
AbstractFluoride chemical conversion treatment is an effective way to improve the corrosion resistance and inhibit pitting corrosion for magnesium alloys. In this study, the degradation process and why the coating inhibited pitting corrosion were investigated. In vitro degradation of AZ31B magnesium alloy with fluoride conversion coating was studied by immersing test. During degradation, magnesium fluoride in the coating could dissolve into F ion and Mg ions, the later could immediately react with OH- to form Mg(OH)(2) deposition. Then sample was covered by a layer of degradation products, which were mainly composed of Mg(OH)(2). Owning to the low solubility of MgF2, formation rate of Mg(OH)(2) was slow, giving rise to an even corrosion resistant coating. As H2O and Cl- penetrating to the alloy substrate, the alloy began to degrade forming Mg(OH)(2) and H-2. Above all, the degradation of fluoride treated magnesium alloy was gentle and inward to migration layer by layer.
KeywordAZ31B magnesium alloy degradation fluoride conversion coating
Funding OrganizationNational Key Research and Development Program of China ; Jiangsu Innovation Center for Biomaterials
DOI10.1080/10667857.2016.1262311
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFC1102404] ; Jiangsu Innovation Center for Biomaterials
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000401156300003
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/124294
Collection中国科学院金属研究所
Corresponding AuthorChen, S.
Affiliation1.Liaoning Univ, Inst Chem Sci, 66 Chongshan Rd, Shenyang 110036, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China
Recommended Citation
GB/T 7714
Li, Q.,Zhu, P.,Chen, S.,et al. In vitro study on degradation of AZ31B magnesium alloy with fluoride conversion coating[J]. MATERIALS TECHNOLOGY,2017,32(7):409-414.
APA Li, Q.,Zhu, P.,Chen, S.,Zhang, B.,&Yang, K..(2017).In vitro study on degradation of AZ31B magnesium alloy with fluoride conversion coating.MATERIALS TECHNOLOGY,32(7),409-414.
MLA Li, Q.,et al."In vitro study on degradation of AZ31B magnesium alloy with fluoride conversion coating".MATERIALS TECHNOLOGY 32.7(2017):409-414.
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