Accelerating effect of catalase on microbiologically influenced corrosion of 304 stainless steel by the halophilic archaeon Natronorubrum tibetense

被引：24
|
作者：
Qian, Hongchang [1 ,2 ,3 ]
Zhang, Dawei [1 ,2 ,3 ]
Cui, Tianyu [1 ,2 ]
Chang, Weiwei [1 ,2 ]
Cao, Fahe [4 ]
Du, Cuiwei [1 ,2 ]
Li, Xiaogang [1 ,2 ,3 ]
机构：
[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing Adv Innovat Ctr Mat Genome Engn, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Natl Mat Corros & Protect Data Ctr, Beijing 100083, Peoples R China
[3] Univ Sci & Technol Beijing, BRI Southeast Asia Network Corros & Protect MOE, Shunde Grad Sch, Foshan 528000, Peoples R China
[4] Sun Yat Sen Univ, Sch Mat, Guangzhou 510006, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 178卷
基金：
中国博士后科学基金;
关键词：
Microbiologically influenced corrosion; Stainless steels; Scanning electrochemical microscopy;
D O I：
10.1016/j.corsci.2020.109057
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The role of metabolic catalase in microbiologically influenced corrosion (MIC) of 304 stainless steel by Natronorubrum tibetense was investigated. Under sterile condition, the catalase concentration in the culture medium had no effect on the corrosion of stainless steel. In contrast, the addition of catalase in the inoculated culture medium resulted in more severe pitting corrosion of stainless steel. The potentiodynamic polarization results demonstrated that catalase mainly promoted the cathodic process of MIC of the stainless steel. Scanning electrochemical microscopy (SECM) further confirmed the accelerating effect of catalase on the cathodic oxygen reduction reaction of MIC.
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页数：8
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