Effect of cathode protection on Desulfovibrio desulfuricans corrosion of X80 steel in a marine tidal environment
周小包 1王子豪 1欧阳泽伦 1苏慧 1王勇 2李智 1吴堂清1
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作者信息
1. School of Materials Science and Engineering,Xiangtan University,Xiangtan 411105,China
2. Singapore Centre for 3D Printing,Nanyang Technological University,50 Nanyang Avenue,Singapore 639798,Singapore;School of Materials Science and Engineering,Nanyang Technological University,50 Nanyang Avenue,Singapore 639798,Singapore
The study systematically investigated the impact of zinc sacrificial anode(Zn-SA)cathode protection on the corrosion of X80 steel caused by Desulfovibrio desulfuricans(D.desulfuricans)in a marine tidal environment.Utilizing weight-loss analysis,electrochemical measurements,Raman spectroscopy,and 3D morphology microscopy,the research unveiled significant findings.Unprotected steel suffered pronounced localized corrosion in the presence of D.desulfuricans in the marine tidal environment.However,the implementation of Zn-SA cathode protection notably reduced the activity of both planktonic and sessile D.desulfuricans cells.Over time,the accumulation of calcareous deposits within the corrosion products increased,as evidenced by a rise in the resistance of the corrosion produt film(Rf).Remarkably,Zn-SA cathode protection demonstrated substantial inhibition of the steel's corrosion rate,albeit exhibiting reduced efficiency as the vertical height of the steel within the tidal environment increased.
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