Corrosion of an AZ31B Magnesium Alloy by Sulfate-Reducing Prokaryotes in a Mudflat Environment
To study the abnormal failure of magnesium anodes for buried pipelines in marine engineering in the unique environment of mudflats, a strain of a sulfate–reducing prokaryote (SRP) was isolated from pipe–laying soil, and identified as <i>Desulfovibrio</i> sp. HQM3. Weight–loss test, elect...
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MDPI AG
2022-04-01
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| Series: | Microorganisms |
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| Online Access: | https://www.mdpi.com/2076-2607/10/5/839 |
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| author | Xiao Lan Jie Zhang Zaifeng Wang Ruiyong Zhang Wolfgang Sand Liang Zhang Jizhou Duan Qingjun Zhu Baorong Hou |
| author_facet | Xiao Lan Jie Zhang Zaifeng Wang Ruiyong Zhang Wolfgang Sand Liang Zhang Jizhou Duan Qingjun Zhu Baorong Hou |
| author_sort | Xiao Lan |
| collection | DOAJ |
| description | To study the abnormal failure of magnesium anodes for buried pipelines in marine engineering in the unique environment of mudflats, a strain of a sulfate–reducing prokaryote (SRP) was isolated from pipe–laying soil, and identified as <i>Desulfovibrio</i> sp. HQM3. Weight–loss test, electrochemical measurements, SEM, EDS, XRD, and CLSM techniques were used to study the effect of corrosion on the AZ31B magnesium alloy. Under the influence of SRP, the magnesium alloy corroded severely at rates up to 1.31 mm/year in the mudflat environment. SRP accelerated corrosion by 0.3mm/year. Pitting occurred on the samples in both abiotic and biotic systems. The pitting depth reached 163.47 μm in the biotic system after 14 days. The main composition of a petal–like corrosion product was Mg(OH)<sub>2</sub>. The results show that a mudflat environment can lead to an accelerated corrosion of magnesium alloys. |
| first_indexed | 2024-03-10T03:24:17Z |
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| id | doaj.art-a8050b99299849098d8080cd9408765e |
| institution | Directory Open Access Journal |
| issn | 2076-2607 |
| language | English |
| last_indexed | 2024-03-10T03:24:17Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
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| series | Microorganisms |
| spelling | doaj.art-a8050b99299849098d8080cd9408765e2023-11-23T12:13:43ZengMDPI AGMicroorganisms2076-26072022-04-0110583910.3390/microorganisms10050839Corrosion of an AZ31B Magnesium Alloy by Sulfate-Reducing Prokaryotes in a Mudflat EnvironmentXiao Lan0Jie Zhang1Zaifeng Wang2Ruiyong Zhang3Wolfgang Sand4Liang Zhang5Jizhou Duan6Qingjun Zhu7Baorong Hou8CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaCAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaCentre of Ocean Information Science and Technology, China National Offshore Oil Information Technology Co., Ltd., Beijing 100029, ChinaCAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaAquatic Biotechnology, University of Duisburg-Essen, 45141 Essen, GermanyCentre of Ocean Information Science and Technology, China National Offshore Oil Information Technology Co., Ltd., Beijing 100029, ChinaCAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaCAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaCAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaTo study the abnormal failure of magnesium anodes for buried pipelines in marine engineering in the unique environment of mudflats, a strain of a sulfate–reducing prokaryote (SRP) was isolated from pipe–laying soil, and identified as <i>Desulfovibrio</i> sp. HQM3. Weight–loss test, electrochemical measurements, SEM, EDS, XRD, and CLSM techniques were used to study the effect of corrosion on the AZ31B magnesium alloy. Under the influence of SRP, the magnesium alloy corroded severely at rates up to 1.31 mm/year in the mudflat environment. SRP accelerated corrosion by 0.3mm/year. Pitting occurred on the samples in both abiotic and biotic systems. The pitting depth reached 163.47 μm in the biotic system after 14 days. The main composition of a petal–like corrosion product was Mg(OH)<sub>2</sub>. The results show that a mudflat environment can lead to an accelerated corrosion of magnesium alloys.https://www.mdpi.com/2076-2607/10/5/839sulfate–reducing prokaryotesmudflat environmentmagnesium alloyMicrobiologically Influenced Corrosionelectrochemical impedance spectroscopy |
| spellingShingle | Xiao Lan Jie Zhang Zaifeng Wang Ruiyong Zhang Wolfgang Sand Liang Zhang Jizhou Duan Qingjun Zhu Baorong Hou Corrosion of an AZ31B Magnesium Alloy by Sulfate-Reducing Prokaryotes in a Mudflat Environment Microorganisms sulfate–reducing prokaryotes mudflat environment magnesium alloy Microbiologically Influenced Corrosion electrochemical impedance spectroscopy |
| title | Corrosion of an AZ31B Magnesium Alloy by Sulfate-Reducing Prokaryotes in a Mudflat Environment |
| title_full | Corrosion of an AZ31B Magnesium Alloy by Sulfate-Reducing Prokaryotes in a Mudflat Environment |
| title_fullStr | Corrosion of an AZ31B Magnesium Alloy by Sulfate-Reducing Prokaryotes in a Mudflat Environment |
| title_full_unstemmed | Corrosion of an AZ31B Magnesium Alloy by Sulfate-Reducing Prokaryotes in a Mudflat Environment |
| title_short | Corrosion of an AZ31B Magnesium Alloy by Sulfate-Reducing Prokaryotes in a Mudflat Environment |
| title_sort | corrosion of an az31b magnesium alloy by sulfate reducing prokaryotes in a mudflat environment |
| topic | sulfate–reducing prokaryotes mudflat environment magnesium alloy Microbiologically Influenced Corrosion electrochemical impedance spectroscopy |
| url | https://www.mdpi.com/2076-2607/10/5/839 |
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