Abstract

Influences of Ce additions (0.08, 0.18 and 0.30 wt.%) on microbiologically influenced corrosion of Cu-bearing 2205 duplex stainless steel (DSS) were investigated through surface analysis and electrochemical measurements during 14-day exposure to a strain of corrosive sulfate reducing bacterium, Desulfovibrio desulfuricans. Results demonstrate the addition of Ce over 0.18 wt.% effectively inhibited the formation of SRB biofilm on surface of 2205-Cu-Ce DSS, and decreased the corrosion tendency to a great degree, indicating that Ce addition over a critical value can significantly enhance antibacterial effect of Cu-bearing 2205 DSS against SRB induced corrosion.

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