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Open AccessArticle

Corrosion Behavior of the Ti–6Al–4V Alloy in Sulfate-Reducing Bacteria Solution

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College of Engineering Science and Technology, Shanghai Ocean University, Shanghai 201306, China
2
College of Science, Donghua University, Shanghai 201620, China
3
Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
*
Authors to whom correspondence should be addressed.
Coatings 2020, 10(1), 24; https://doi.org/10.3390/coatings10010024
Received: 7 November 2019 / Revised: 6 December 2019 / Accepted: 17 December 2019 / Published: 29 December 2019
(This article belongs to the Section Corrosion, Wear and Erosion)
The corrosion behavior of the Ti–6Al–4V alloy was investigated in a sulfate-reducing bacteria (SRB) solution. The results showed that sulfate-reducing bacteria has good affinity with the surface of the Ti–6Al–4V alloy after 5 days. A potentiodynamic polarization test demonstrated that the corrosion resistance of the Ti–6Al–4V alloy was initially improved but deteriorated quickly in the subsequent period. The corrosion mechanism of the Ti–6Al–4V alloy was revealed by analyzing its microstructure with the aid of scanning electron microscopy, X-ray photoelectron spectroscopy and X-ray fluorescence. The pitting corrosion was deemed to be a typical cause of the corrosion behavior of the alloy in the SRB solution. The underlying mechanism of the pitting corrosion was proposed for the alloy. View Full-Text
Keywords: Ti–6Al–4V alloy; pitting corrosion; sulfate-reducing bacteria Ti–6Al–4V alloy; pitting corrosion; sulfate-reducing bacteria
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Zheng, X.; Zhuang, X.; Lei, Y.; Chu, Z.; Xu, J.; Gao, L.; Sun, X. Corrosion Behavior of the Ti–6Al–4V Alloy in Sulfate-Reducing Bacteria Solution. Coatings 2020, 10, 24.

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