Broken passive film and subsequent pitting corrosion behavior of 2205 duplex stainless steel induced by marine fungus Aspergillus terreus in artificial seawater

被引：36
作者：
Liu, Haixian [1 ,2 ]
Zhang, Wanqing [1 ,2 ]
Zhao, Zilong [1 ,2 ]
Lai, Huansheng [3 ]
Liu, Hongwei [1 ,2 ]
机构：
[1] Sun Yat Sen Univ, Sch Chem Engn & Technol, Zhuhai 519082, Peoples R China
[2] Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China
[3] Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 218卷
基金：
中国国家自然科学基金;
关键词：
Microbiologically influenced corrosion; Fungus Aspergillus terreus; Duplex stainless steels; Pitting corrosion; Passive film; MICROBIOLOGICALLY INFLUENCED CORROSION; CARBON-STEEL; CHROMATE; INHIBITION; RESISTANCE; SUSCEPTIBILITY; NIGER; WATER; IRON; XPS;
D O I：
10.1016/j.corsci.2023.111147
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Studies of fungal corrosion for duplex stainless steels (DSS) in marine environments are poor. In this work, effects of fungus Aspergillus terreus on the structure of passive film and the subsequent corrosion behavior of 2205 DSS in artificial seawater were deeply investigated. Results indicated that A. terreus promoted local deterioration of 2205 DSS passive film by changing its structure and components compared to the abiotic control, and then significantly accelerated the corrosion of 2205 DSS especially pitting corrosion. The nucleation and growth of metastable pitting corrosion were accelerated by A. terreus. Furthermore, A. terreus could preferentially corrode the austenitic phase.
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收藏
页数：12
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