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Temporary Inhibition of the Corrosion of AZ31B Magnesium Alloy by Formation of Bacillus subtilis Biofilm in Artificial Seawater
It is well known that microorganisms tend to form biofilms on metal surfaces to accelerate/decelerate corrosion and affect their service life. Bacillus subtilis was used to produce a dense biofilm on an AZ31B magnesium alloy surface. Corrosion behavior of the alloy with the B. subtilis biofilm was e...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6384576/ https://www.ncbi.nlm.nih.gov/pubmed/30744166 http://dx.doi.org/10.3390/ma12030523 |
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author | Kang, Yaxin Li, Lei Li, Shunling Zhou, Xin Xia, Ke Liu, Chang Qu, Qing |
author_facet | Kang, Yaxin Li, Lei Li, Shunling Zhou, Xin Xia, Ke Liu, Chang Qu, Qing |
author_sort | Kang, Yaxin |
collection | PubMed |
description | It is well known that microorganisms tend to form biofilms on metal surfaces to accelerate/decelerate corrosion and affect their service life. Bacillus subtilis was used to produce a dense biofilm on an AZ31B magnesium alloy surface. Corrosion behavior of the alloy with the B. subtilis biofilm was evaluated in artificial seawater. The results revealed that the biofilm hampered extracellular electron transfer significantly, which resulted in a decrease of i(corr) and increase of R(t) clearly compared to the control group. Moreover, an ennoblement of E(corr) was detected under the condition of B. subtilis biofilm covering. Significant reduction of the corrosion was observed by using the cyclic polarization method. All of these prove that the existence of the B. subtilis biofilm effectively enhances the anti-corrosion performance of the AZ31B magnesium alloy. This result may enhance the usage of bio-interfaces for temporary corrosion control. In addition, a possible corrosion inhibition mechanism of B. subtilis on AZ31B magnesium alloy was proposed. |
format | Online Article Text |
id | pubmed-6384576 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63845762019-02-23 Temporary Inhibition of the Corrosion of AZ31B Magnesium Alloy by Formation of Bacillus subtilis Biofilm in Artificial Seawater Kang, Yaxin Li, Lei Li, Shunling Zhou, Xin Xia, Ke Liu, Chang Qu, Qing Materials (Basel) Article It is well known that microorganisms tend to form biofilms on metal surfaces to accelerate/decelerate corrosion and affect their service life. Bacillus subtilis was used to produce a dense biofilm on an AZ31B magnesium alloy surface. Corrosion behavior of the alloy with the B. subtilis biofilm was evaluated in artificial seawater. The results revealed that the biofilm hampered extracellular electron transfer significantly, which resulted in a decrease of i(corr) and increase of R(t) clearly compared to the control group. Moreover, an ennoblement of E(corr) was detected under the condition of B. subtilis biofilm covering. Significant reduction of the corrosion was observed by using the cyclic polarization method. All of these prove that the existence of the B. subtilis biofilm effectively enhances the anti-corrosion performance of the AZ31B magnesium alloy. This result may enhance the usage of bio-interfaces for temporary corrosion control. In addition, a possible corrosion inhibition mechanism of B. subtilis on AZ31B magnesium alloy was proposed. MDPI 2019-02-10 /pmc/articles/PMC6384576/ /pubmed/30744166 http://dx.doi.org/10.3390/ma12030523 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Kang, Yaxin Li, Lei Li, Shunling Zhou, Xin Xia, Ke Liu, Chang Qu, Qing Temporary Inhibition of the Corrosion of AZ31B Magnesium Alloy by Formation of Bacillus subtilis Biofilm in Artificial Seawater |
title | Temporary Inhibition of the Corrosion of AZ31B Magnesium Alloy by Formation of Bacillus subtilis Biofilm in Artificial Seawater |
title_full | Temporary Inhibition of the Corrosion of AZ31B Magnesium Alloy by Formation of Bacillus subtilis Biofilm in Artificial Seawater |
title_fullStr | Temporary Inhibition of the Corrosion of AZ31B Magnesium Alloy by Formation of Bacillus subtilis Biofilm in Artificial Seawater |
title_full_unstemmed | Temporary Inhibition of the Corrosion of AZ31B Magnesium Alloy by Formation of Bacillus subtilis Biofilm in Artificial Seawater |
title_short | Temporary Inhibition of the Corrosion of AZ31B Magnesium Alloy by Formation of Bacillus subtilis Biofilm in Artificial Seawater |
title_sort | temporary inhibition of the corrosion of az31b magnesium alloy by formation of bacillus subtilis biofilm in artificial seawater |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6384576/ https://www.ncbi.nlm.nih.gov/pubmed/30744166 http://dx.doi.org/10.3390/ma12030523 |
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