Influence of the α fraction on 2205 duplex stainless steel corrosion affected by Pseudomonas aeruginosa

被引：0
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作者：
Zhu, Liyang [1 ,2 ,3 ,4 ]
Wu, Jiajia [1 ,2 ,3 ,5 ]
Zhang, Dun [1 ,2 ,3 ]
Wang, Peng [1 ,2 ,3 ]
Sun, Zhihua [1 ,2 ,3 ,4 ]
Li, Ce [1 ,2 ,3 ,4 ]
Li, Ee [1 ,2 ,3 ]
机构：
[1] Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Science, Qingdao,266071, China
[2] Open studio for Marine Corrosion and Protection, Qingdao National Laboratory for Marine Science and Technology, Qingdao,266071, China
[3] Center for Ocean Mega-Science, Chinese Academic of Science, Qingdao,266071, China
[4] University of Chinese Academy of Sciences, Beijing,100049, China
[5] Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology & Engineering, CAS, Ningbo,315201, China
来源：
Corrosion Science | 2021年 / 193卷
基金：
中国国家自然科学基金;
关键词：
Bacteria - Corrosion resistance - Pitting;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Corrosion of 2205 duplex stainless steel with different α fractions affected by Pseudomonas aeruginosa was investigated. It was found that P. aeruginosa accelerated pitting corrosion, and an α fraction of 53.8% gave the best corrosion resistance, which was related to the highest resistance, and fewest defects of passive films, and least biofilms. Pits appeared at phase boundaries or α phase in biotic media, due to the preferential attachment of bacteria at phase boundaries and their expansion towards α phase. P. aeruginosa kept high volta differences between α and γ phases to promote the anodic dissolution of α phase. Data availability statement: The raw/processed data required to reproduce these findings cannot be shared at this time as the data are related to an ongoing study. © 2021 Elsevier Ltd
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