| Destruction of few fluorides to passive film of Ti-6Al-4V alloy under oxygen deficiency crevice conditions | |
| Zhao, Pingping1,2; Song, Yingwei1,3; Shi, Linjun1,2; Dong, Kaihui1; Shan, Dayong1; Han, En-Hou1,3 | |
| Corresponding Author | Song, Yingwei(ywsong@imr.ac.cn) |
| 2020-10-22 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE
 |
| ISSN | 0022-2461 |
| Pages | 15 |
| Abstract | 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. |
| Funding Organization | Innovation Group of Marine Engineering Materials and Corrosion Control, Southern Marine Science and Engineering Guangdong Laboratory |
| DOI | 10.1007/s10853-020-05456-y |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Innovation Group of Marine Engineering Materials and Corrosion Control, Southern Marine Science and Engineering Guangdong Laboratory |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000582363300002 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/141181 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Song, Yingwei |
| Affiliation | 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 |
| Recommended Citation 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. |
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