IMR OpenIR
Effects of second phases on the formation mechanism and corrosion resistance of phosphate conversion film on AZ80 Mg alloy
Xu, Zubin; Song, Yingwei; Dong, Kaihui; Shan, Dayong; Han, En-Hou
Corresponding AuthorSong, Yingwei(ywsong@imr.ac.cn)
2018
Source PublicationANTI-CORROSION METHODS AND MATERIALS
ISSN0003-5599
Volume65Issue:6Pages:587-593
AbstractPurpose The formation and corrosion processes of a conversion film on the AZ80 Mg alloy with different second phases were compared to clarify the effect of microstructure on the quality of protective coatings. Design/methodology/approach The size and distribution of second phases in the edge and central regions of the AZ80 cast ingot exhibit a great difference. The film growth processes and their corrosion resistance on the edge and central regions of the AZ80 cast ingot were investigated by scanning electron microscope observations, immersion tests and electrochemical measurements. Findings The results indicate that second phases act as micro-cathodes and hydrogen evolution reaction occurs on their surface, which is not beneficial for the deposition of the conversion film. Originality/value The conversion film formed on the central regions of AZ80 cast ingot with a low volume fraction of second phases exhibits a more uniform surface and higher corrosion resistance than that formed on the edge regions of the sample with a higher volume fraction of second phases.
KeywordCorrosion resistance Formation mechanism AZ80 Mg alloy Conversion film Micro-cathodes Second phases
DOI10.1108/ACMM-05-2018-1935
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000448724400008
PublisherEMERALD GROUP PUBLISHING LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/130077
Collection中国科学院金属研究所
Corresponding AuthorSong, Yingwei
AffiliationChinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Xu, Zubin,Song, Yingwei,Dong, Kaihui,et al. Effects of second phases on the formation mechanism and corrosion resistance of phosphate conversion film on AZ80 Mg alloy[J]. ANTI-CORROSION METHODS AND MATERIALS,2018,65(6):587-593.
APA Xu, Zubin,Song, Yingwei,Dong, Kaihui,Shan, Dayong,&Han, En-Hou.(2018).Effects of second phases on the formation mechanism and corrosion resistance of phosphate conversion film on AZ80 Mg alloy.ANTI-CORROSION METHODS AND MATERIALS,65(6),587-593.
MLA Xu, Zubin,et al."Effects of second phases on the formation mechanism and corrosion resistance of phosphate conversion film on AZ80 Mg alloy".ANTI-CORROSION METHODS AND MATERIALS 65.6(2018):587-593.
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