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TY - JOUR TI - Accelerating effect of catalase on microbiologically influenced corrosion of 304 stainless steel by the halophilic archaeon Natronorubrum tibetense AU - Qian, Hongchang AU - Zhang, Dawei AU - Cui, Tianyu AU - Chang, Weiwei AU - Cao, Fahe AU - Du, Cuiwei AU - Li, Xiaogang T2 - Corrosion Science AB - 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. DA - 2020/10/09/ PY - 2020 DO - 10.1016/j.corsci.2020.109057 DP - ScienceDirect SP - 109057 J2 - Corrosion Science LA - en SN - 0010-938X UR - http://www.sciencedirect.com/science/article/pii/S0010938X20316747 Y2 - 2020/10/13/07:11:32 KW - A. Microbiologically influenced corrosion KW - B. Stainless steels KW - C. Scanning electrochemical microscopy ER -