Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater
The effect of pH on the corrosion and repassivation behavior of TA2 in simulated seawater was studied using electrochemical tests, immersion experiments, and surface morphology topology analysis. The results show that E<sub>corr</sub> and R<sub>f</sub> increased while i<su...
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MDPI AG
2021-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/22/6764 |
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| author | Yingxiao Zhang Tingting Yan Lin Fan Zhiyong Liu Longfei Song Xiaogang Li |
| author_facet | Yingxiao Zhang Tingting Yan Lin Fan Zhiyong Liu Longfei Song Xiaogang Li |
| author_sort | Yingxiao Zhang |
| collection | DOAJ |
| description | The effect of pH on the corrosion and repassivation behavior of TA2 in simulated seawater was studied using electrochemical tests, immersion experiments, and surface morphology topology analysis. The results show that E<sub>corr</sub> and R<sub>f</sub> increased while i<sub>pass</sub> and weight loss rate decreased as the pH of simulated seawater increased. The TA2 passive film was determined to be mainly composed of a large amount of TiO<sub>2</sub> and a small amount of TiO. The repassivation function of TA2 can be expressed as <i>E</i> = −0.1375 + 0.0532ln(<i>t</i> − 1.241) for a simulated seawater pH of 8.2. The parameter b, which represents the slope of the potential–time curve during the friction electrode test, was used to evaluate the repassivation behavior of TA2. The increase in pH value was observed to promote the repassivation speed of the passive film, which is beneficial to the corrosion resistance of TA2. |
| first_indexed | 2024-03-10T05:19:28Z |
| format | Article |
| id | doaj.art-22359719d5304861982608dac617eeed |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T05:19:28Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-22359719d5304861982608dac617eeed2023-11-23T00:08:22ZengMDPI AGMaterials1996-19442021-11-011422676410.3390/ma14226764Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated SeawaterYingxiao Zhang0Tingting Yan1Lin Fan2Zhiyong Liu3Longfei Song4Xiaogang Li5Corrosion and Protection Center, Key Laboratory for Corrosion and Protection (MOE), University of Science and Technology Beijing, Beijing 100083, ChinaCorrosion and Protection Center, Key Laboratory for Corrosion and Protection (MOE), University of Science and Technology Beijing, Beijing 100083, ChinaCorrosion and Protection Center, Key Laboratory for Corrosion and Protection (MOE), University of Science and Technology Beijing, Beijing 100083, ChinaCorrosion and Protection Center, Key Laboratory for Corrosion and Protection (MOE), University of Science and Technology Beijing, Beijing 100083, ChinaCorrosion and Protection Center, Key Laboratory for Corrosion and Protection (MOE), University of Science and Technology Beijing, Beijing 100083, ChinaCorrosion and Protection Center, Key Laboratory for Corrosion and Protection (MOE), University of Science and Technology Beijing, Beijing 100083, ChinaThe effect of pH on the corrosion and repassivation behavior of TA2 in simulated seawater was studied using electrochemical tests, immersion experiments, and surface morphology topology analysis. The results show that E<sub>corr</sub> and R<sub>f</sub> increased while i<sub>pass</sub> and weight loss rate decreased as the pH of simulated seawater increased. The TA2 passive film was determined to be mainly composed of a large amount of TiO<sub>2</sub> and a small amount of TiO. The repassivation function of TA2 can be expressed as <i>E</i> = −0.1375 + 0.0532ln(<i>t</i> − 1.241) for a simulated seawater pH of 8.2. The parameter b, which represents the slope of the potential–time curve during the friction electrode test, was used to evaluate the repassivation behavior of TA2. The increase in pH value was observed to promote the repassivation speed of the passive film, which is beneficial to the corrosion resistance of TA2.https://www.mdpi.com/1996-1944/14/22/6764TA2corrosion behaviorrepassivation behaviorsimulated seawater environment |
| spellingShingle | Yingxiao Zhang Tingting Yan Lin Fan Zhiyong Liu Longfei Song Xiaogang Li Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater Materials TA2 corrosion behavior repassivation behavior simulated seawater environment |
| title | Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater |
| title_full | Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater |
| title_fullStr | Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater |
| title_full_unstemmed | Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater |
| title_short | Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater |
| title_sort | effect of ph on the corrosion and repassivation behavior of ta2 in simulated seawater |
| topic | TA2 corrosion behavior repassivation behavior simulated seawater environment |
| url | https://www.mdpi.com/1996-1944/14/22/6764 |
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