Influence of hydrostatic pressure on the passive film of titanium alloy
The effect of hydrostatic pressure on the corrosion behavior and failure mechanism of Ti–6Al–4V in simulated deep-sea environments has been investigated through microstructure analysis and in-situ electrochemical measurements. Hydrostatic pressure does not change the nucleation mechanism of passive...
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| Language: | English |
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Elsevier
2025-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425014875 |
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| author | Wentao Li Yiwei Guo Wei Liu Yinghua Yang Yunan Zhang Feifei Huang Lei Wen Dongbai Sun |
| author_facet | Wentao Li Yiwei Guo Wei Liu Yinghua Yang Yunan Zhang Feifei Huang Lei Wen Dongbai Sun |
| author_sort | Wentao Li |
| collection | DOAJ |
| description | The effect of hydrostatic pressure on the corrosion behavior and failure mechanism of Ti–6Al–4V in simulated deep-sea environments has been investigated through microstructure analysis and in-situ electrochemical measurements. Hydrostatic pressure does not change the nucleation mechanism of passive film of Ti–6Al–4V. Charge transfer resistance (Rct) decreases by 53.0 % and 69.9 % at 10 MPa and 30 MPa respectively, compared to 0.1 MPa, suggesting that the corrosion resistance of passive film degrades with increasing hydrostatic pressure. Oxygen vacancies act as the primary donors within the passive film of Ti–6Al–4V. At the etching depth of 10 nm, the TiO2 content in the passive film decreases from 47.75 % (0.1 MPa) to 33.23 % (30 MPa). The average valence state of Ti in the inner layer of the passive film decreases with the increase in hydrostatic pressure, indicating that the stability of the passive film decreases. |
| format | Article |
| id | doaj-art-c5af539afc0e4b00b548d61d5e9eb965 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-c5af539afc0e4b00b548d61d5e9eb9652025-08-20T02:07:47ZengElsevierJournal of Materials Research and Technology2238-78542025-07-01371186119810.1016/j.jmrt.2025.06.065Influence of hydrostatic pressure on the passive film of titanium alloyWentao Li0Yiwei Guo1Wei Liu2Yinghua Yang3Yunan Zhang4Feifei Huang5Lei Wen6Dongbai Sun7National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, 100083, ChinaOptical-electrical BU, Jonhon Optronic Technology Co., Ltd, Luoyang, 471023, ChinaOil & Gas Technology Research Institute of ChangQing Oilfield Company, Xian, 710018, China; National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields, Xian, 710018, ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, 100083, ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, 100083, ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, 100083, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, 100083, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China; Corresponding author. National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, 100083, China.School of Materials Science and Engineering & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, 510006, ChinaThe effect of hydrostatic pressure on the corrosion behavior and failure mechanism of Ti–6Al–4V in simulated deep-sea environments has been investigated through microstructure analysis and in-situ electrochemical measurements. Hydrostatic pressure does not change the nucleation mechanism of passive film of Ti–6Al–4V. Charge transfer resistance (Rct) decreases by 53.0 % and 69.9 % at 10 MPa and 30 MPa respectively, compared to 0.1 MPa, suggesting that the corrosion resistance of passive film degrades with increasing hydrostatic pressure. Oxygen vacancies act as the primary donors within the passive film of Ti–6Al–4V. At the etching depth of 10 nm, the TiO2 content in the passive film decreases from 47.75 % (0.1 MPa) to 33.23 % (30 MPa). The average valence state of Ti in the inner layer of the passive film decreases with the increase in hydrostatic pressure, indicating that the stability of the passive film decreases.http://www.sciencedirect.com/science/article/pii/S2238785425014875Ti–6Al–4VPassive filmHydrostatic pressureSimulated deep-sea environmentElectrochemical measurement |
| spellingShingle | Wentao Li Yiwei Guo Wei Liu Yinghua Yang Yunan Zhang Feifei Huang Lei Wen Dongbai Sun Influence of hydrostatic pressure on the passive film of titanium alloy Journal of Materials Research and Technology Ti–6Al–4V Passive film Hydrostatic pressure Simulated deep-sea environment Electrochemical measurement |
| title | Influence of hydrostatic pressure on the passive film of titanium alloy |
| title_full | Influence of hydrostatic pressure on the passive film of titanium alloy |
| title_fullStr | Influence of hydrostatic pressure on the passive film of titanium alloy |
| title_full_unstemmed | Influence of hydrostatic pressure on the passive film of titanium alloy |
| title_short | Influence of hydrostatic pressure on the passive film of titanium alloy |
| title_sort | influence of hydrostatic pressure on the passive film of titanium alloy |
| topic | Ti–6Al–4V Passive film Hydrostatic pressure Simulated deep-sea environment Electrochemical measurement |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425014875 |
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