Investigation of microcracks on conversion film of AZ80 Mg alloy

IMR OpenIR

	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 Publication	SURFACE ENGINEERING
ISSN	0267-0844
Volume	35 Issue:6 Pages:527-535
Abstract	Chemical 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.
Keyword	Microcracks conversion film SEM vacuuming drying
Indexed By	SCI
Language	英语
WOS ID	WOS:000462849400008
Publisher	TAYLOR & FRANCIS LTD
Citation statistics	Cited Times:1[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://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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