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Volume 14
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10.3390/ma14226764
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Article

Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater

by
Yingxiao Zhang
1,2,
Tingting Yan
1,2,
Lin Fan
1,3,
Zhiyong Liu
1,2,*,
Longfei Song
1,2 and
Xiaogang Li
1,2,*
1
Corrosion and Protection Center, Key Laboratory for Corrosion and Protection (MOE), University of Science and Technology Beijing, Beijing 100083, China
2
National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing 100083, China
3
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Qingdao 266101, China
*
Authors to whom correspondence should be addressed.
Materials 2021, 14(22), 6764; https://doi.org/10.3390/ma14226764
Submission received: 30 September 2021 / Revised: 25 October 2021 / Accepted: 26 October 2021 / Published: 10 November 2021
(This article belongs to the Section Corrosion)
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Abstract

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 Ecorr and Rf increased while ipass 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 TiO2 and a small amount of TiO. The repassivation function of TA2 can be expressed as E = −0.1375 + 0.0532ln(t − 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.
Keywords: TA2; corrosion behavior; repassivation behavior; simulated seawater environment TA2; corrosion behavior; repassivation behavior; simulated seawater environment

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MDPI and ACS Style

Zhang, Y.; Yan, T.; Fan, L.; Liu, Z.; Song, L.; Li, X. Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater. Materials 2021, 14, 6764. https://doi.org/10.3390/ma14226764

AMA Style

Zhang Y, Yan T, Fan L, Liu Z, Song L, Li X. Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater. Materials. 2021; 14(22):6764. https://doi.org/10.3390/ma14226764

Chicago/Turabian Style

Zhang, Yingxiao, Tingting Yan, Lin Fan, Zhiyong Liu, Longfei Song, and Xiaogang Li. 2021. "Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater" Materials 14, no. 22: 6764. https://doi.org/10.3390/ma14226764

APA Style

Zhang, Y., Yan, T., Fan, L., Liu, Z., Song, L., & Li, X. (2021). Effect of pH on the Corrosion and Repassivation Behavior of TA2 in Simulated Seawater. Materials, 14(22), 6764. https://doi.org/10.3390/ma14226764

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