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Investigation of microcracks on conversion film of AZ80 Mg alloy
Song, Yingwei; Xu, Zubin; Dong, Kaihui; Shan, Dayong; Han, En-Hou
2019-06-03
Source PublicationSURFACE ENGINEERING
ISSN0267-0844
Volume35Issue:6Pages:527-535
AbstractChemical conversion films are widely used to improve the corrosion resistance of Mg alloys. However, abundant microcracks can be found on the surface of conversion film using scanning electron microscopy (SEM) observation. The phosphate conversion film was dried by three methods in this study, thereafter the formation reasons of microcracks and their effect on the corrosion resistance were investigated using SEM and optical morphology observations, and electrochemical measurements. The results indicate that the conversion film dried at high temperature or vacuuming during SEM measurements can accelerate the formation of microcracks. Especially, the microcracks observed using SEM can be attributed to the effect of vacuuming instead of showing the original status. Corrosive mediums are susceptible to preferentially absorb on the microcracks, further to form localised corrosion. It is better to dry the conversion films at room temperature instead of high temperature during the actual applications.
KeywordMicrocracks conversion film SEM vacuuming drying
Indexed BySCI
Language英语
WOS IDWOS:000462849400008
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81019
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Song, Yingwei,Xu, Zubin,Dong, Kaihui,et al. Investigation of microcracks on conversion film of AZ80 Mg alloy[J]. SURFACE ENGINEERING,2019,35(6):527-535.
APA Song, Yingwei,Xu, Zubin,Dong, Kaihui,Shan, Dayong,&Han, En-Hou.(2019).Investigation of microcracks on conversion film of AZ80 Mg alloy.SURFACE ENGINEERING,35(6),527-535.
MLA Song, Yingwei,et al."Investigation of microcracks on conversion film of AZ80 Mg alloy".SURFACE ENGINEERING 35.6(2019):527-535.
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