Destruction of few fluorides to passive film of Ti-6Al-4V alloy under oxygen deficiency crevice conditions

doi:10.1007/s10853-020-05456-y

IMR OpenIR

	Destruction of few fluorides to passive film of Ti-6Al-4V alloy under oxygen deficiency crevice conditions
	Zhao, Pingping 1,2; Song, Yingwei 1,3; Shi, Linjun 1,2; Dong, Kaihui 1; Shan, Dayong 1; Han, En-Hou 1,3
通讯作者	Song, Yingwei(ywsong@imr.ac.cn)
	2020-10-22
发表期刊	JOURNAL OF MATERIALS SCIENCE
ISSN	0022-2461
页码	15
摘要	The destruction of Ti passive film cannot occur if fluorine ions (F-) are below a critical concentration in an open electrolyte with oxygen acting as a passivating agent. However, in an occluded crevice, few F- combined with oxygen deficiency environment may synergistically affect the crevice corrosion of Ti alloys. Herein, the role of few F-, which is far below the critical concentration in open solution, in the crevice corrosion of Ti-6Al-4V alloy was studied using a galvanic coupling technique combined with Kelvin probe force microscopy, atomic force microscope, and X-ray photoelectron spectroscopy. The results indicate that the F- dominate the crevice corrosion process of Ti alloys by occupying oxygen vacancies to form fluoride-titanium-oxygen compounds. A multicolored product film is generated in the crevice area, and its colors vary in the order of black-blue-purple-light yellow from the crevice edge to the interior, corresponding to the corrosion degree from severe to weak. Multicolor is formed by the interference phenomena due to the different surface roughness, thickness and chemical composition of the product film.
资助者	Innovation Group of Marine Engineering Materials and Corrosion Control, Southern Marine Science and Engineering Guangdong Laboratory
DOI	10.1007/s10853-020-05456-y
收录类别	SCI
语种	英语
资助项目	Innovation Group of Marine Engineering Materials and Corrosion Control, Southern Marine Science and Engineering Guangdong Laboratory
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000582363300002
出版者	SPRINGER
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/141181
专题	中国科学院金属研究所
通讯作者	Song, Yingwei
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat & Engn, Shenyang 110016, Peoples R China 3.Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519000, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Pingping,Song, Yingwei,Shi, Linjun,et al. Destruction of few fluorides to passive film of Ti-6Al-4V alloy under oxygen deficiency crevice conditions[J]. JOURNAL OF MATERIALS SCIENCE,2020:15.
APA	Zhao, Pingping,Song, Yingwei,Shi, Linjun,Dong, Kaihui,Shan, Dayong,&Han, En-Hou.(2020).Destruction of few fluorides to passive film of Ti-6Al-4V alloy under oxygen deficiency crevice conditions.JOURNAL OF MATERIALS SCIENCE,15.
MLA	Zhao, Pingping,et al."Destruction of few fluorides to passive film of Ti-6Al-4V alloy under oxygen deficiency crevice conditions".JOURNAL OF MATERIALS SCIENCE (2020):15.