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Effect of cathode protection on Desulfovibrio desulfuricans corrosion of X80 steel in a marine tidal environment

阴极保护对海洋潮汐环境中X80钢Desulfovibrio desulfuricans腐蚀的影响
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摘要 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. 本文利用失重分析、电化学测量、拉曼光谱和超景深三维显微镜等分析测试技术系统研究了海洋潮汐环境中锌牺牲阳极(zincsacrificialanode,Zn-SA)阴极保护对X80钢的脱硫脱硫弧菌(Desulfovibro desulfuricans,D.desulfuricans)腐蚀的影响。在海洋潮汐环境中,D.desulfuricans细胞活性较高,X80钢发生了明显的D.desulfuricans腐蚀,腐蚀以局部腐蚀为主。Zn-SA阴极保护作用下,浮游和固着D.desulfuricans的活性显著降低,腐蚀产物中钙质沉积物的含量逐渐增加,腐蚀产物电阻Rf值逐渐上升。Zn-SA阴极保护显著地抑制了X80钢D.desulfuricans腐蚀,但是这种抑制作用会随着X80钢在潮汐环境中的垂直高度的升高而降低。
作者 ZHOU Xiao-bao WANG Zi-hao OU-YANG Ze-lun SU Hui WANG Yong LI Zhi WU Tang-qing 周小包;王子豪;欧阳泽伦;苏慧;王勇;李智;吴堂清(School of Materials Science and Engineering,Xiangtan University,Xiangtan 411105,China;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)
出处 《Journal of Central South University》 SCIE EI CAS CSCD 2024年第10期3612-3627,共16页 中南大学学报(英文版)
基金 Projects(52471096,51971191)supported by the National Natural Science Foundation of China Project(S202410530205)supported by the College Students Innovation and Entrepreneurship Training Program of Hunan Province,China Project(S202310530029)supported by the National College Students Innovation and Entrepreneurship Training Program,China。
关键词 X80 pipeline steel microbial corrosion marine tidal corrosion Desulfovibro desulfuricans cathode protection X80管线钢 微生物腐蚀 海洋潮汐腐蚀 Desulfovibro desulfuricans 阴极保护
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