海水中舟形藻对Q235碳钢腐蚀行为的影响
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摘要
采取扫面电子显微镜(SEM)、能谱分析(EDS)及电化学方法等研究了海水中舟形藻对Q235碳钢腐蚀行为的影响。结果表明:在不含舟形藻的培养液中浸泡后,Q235碳钢表面发生了均匀腐蚀,而在含舟形藻的培养液中浸泡后,Q235碳钢表面发生了严重的局部腐蚀;舟形藻附着在碳钢表面可分泌胞外聚合物(EPS),试验初期生物膜对碳钢有一定的保护作用,舟形藻在碳钢表面进行光合作用,试验后期局部生物膜脱落导致局部溶解氧含量过高,阴极氧还原电流变大,从而加速腐蚀。
Scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS)and electrochemical methods were used to study the effect of navicula on the corrosion behavior of Q235 carbon steel.The results showed that the surface of Q235 carbon steel was uniformly corroded after immersion in the culture solution without navicula,and severe localized corrosion occurred on the surface of Q235 carbon steel after immersion in the culture solution containing navicula.The navicula attaching to the surface of carbon steel could secrete extracellular polymer(EPS).At the beginning of the experiment,the biofilm had a certain protective effect on carbon steel.Photosynthesis was carried out on the surface of carbon steel.The local biofilm detachment caused the localized dissolved oxygen content be too high,the cathodic oxygen reduction current became larger,and thus accelerated corrosion.
Scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS)and electrochemical methods were used to study the effect of navicula on the corrosion behavior of Q235 carbon steel.The results showed that the surface of Q235 carbon steel was uniformly corroded after immersion in the culture solution without navicula,and severe localized corrosion occurred on the surface of Q235 carbon steel after immersion in the culture solution containing navicula.The navicula attaching to the surface of carbon steel could secrete extracellular polymer(EPS).At the beginning of the experiment,the biofilm had a certain protective effect on carbon steel.Photosynthesis was carried out on the surface of carbon steel.The local biofilm detachment caused the localized dissolved oxygen content be too high,the cathodic oxygen reduction current became larger,and thus accelerated corrosion.
引文
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[23] CHEN S,WANG P,ZHANG D.Corrosion behavior of copper under biofilm of sulfate-reducing bacteria[J].Corrosion Science,2014,87:407-415.
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[25] CHONGDAR S,GUNASEKARAN G,KUMAR P.Corrosion inhibition of mild steel by aerobic biofilm[J].Electrochimica Acta,2005,50(24):4655-4665.
[26] GUNASEKARAN G,CHONGDAR S,GAONKAR S N,et al.Influence of bacteria on film formation inhibiting corrosion[J].Corrosion Science,2004,46(8):1953-1967.
[2] MCBETH J M,EMERSON D.In situ microbial community succession on mild steel in estuarine and marine environments:exploring the role of iron-oxidizing bacteria[J].Frontiers in Microbiology,2016(7):767.
[3] BEECH I B,SUNNER J.Biocorrosion:towards understanding interactions between biofilms and metals[J].Current Opinion in Biotechnology,2004,15(3):181-186.
[4] FANG H H P,XU L C,CHAN K Y.Effects of toxic metals and chemicals on biofilm and biocorrosion[J].Water Research,2002,36(19):4709-4716.
[5] GOMEZ DE S S G,DE MELE M F L,VIDELA H A.Interaction of biofilms and inorganic passive layers in the corrosion of Cu/Ni alloys in chloride environments[J].Corrosion,1990,46(4):302-306.
[6] GI J D,ROMAN M,ESSELMAN T,et al.The role of microbial biofilms in deterioration of space station candidate materials[J].International Biodeterioration&Biodegradation,1998,41(1):25-33.
[7] LEWANDOWSKIY Z,DICKINSONY W,LEEY W.Electrochemical interactions of biofilms with metal surfaces[J].Water Science and Technology,1997,36(1):295-302.
[8] GERCHAKOV S M,LITTLE B J,WAGNER P.Probing microbiologically induced corrosion[J].Corrosion,1986,42(11):689-692.
[9] CONGMIN X U,ZHANG Y,CHENG G,et al.Corrosion and electrochemical behavior of 316L stainless steel in sulfate-reducing and iron-oxidizing bacteria solutions 11supported by the national natural science foundation of china(No.20576108)[J].Chinese Journal of Chemical Engineering,2006,14(6):829-834.
[10] ZARGIEL K A,SWAIN G W.Static vs dynamic settlement and adhesion of diatoms to ship hull coatings[J].Biofouling,2014,30(1):115-129.
[11]孙彩霞.模拟污损生物附着对Zn阳极腐蚀性能影响的研究[D].烟台:烟台大学,2014.
[12]汪江伟,张杰,陈守刚,等.钙质层对Q235碳钢在含双眉藻f/2培养基中腐蚀行为的影响[J].中国腐蚀与防护学报,2016,35(6):535-542.
[13] LIU H,XU D,DAO A Q,et al.Study of corrosion behavior and mechanism of carbon steel in the presence of chlorella vulgaris[J].Corrosion Science,2015,101:84-93.
[14] PISCIOTTA J M,ZOU Y J,BASKAKOV I V.Light-dependent electrogenic activity of cyanobacteria[J].PloS One,2010(5):e10821.
[15] MCCORMICK A J,BOMBELLI P,SCOTT A M,et al.Photosynthetic biofilms in pure culture harness solar energy in a mediatorless bio-photovoltaic cell(BPV)system[J].Energy&Environmental Science,2011,4(11):4699-4709.
[16] CAO S,WANG J D,CHEN H S,et al.Progress of marine biofouling and antifouling technologies[J].Chinese Science Bulletin,2011,56(7):598-612.
[17] SHEEHAN J,DUNAHAY T,BENEMANN J,et al.A look back at the US department of energy′s aquatic species program:biodiesel from algae[J].National Renewable Energy Laboratory,1998(2):328.
[18]管方,翟晓凡,段继周,等.舟形藻在假单胞菌菌膜上的附着及对316L不锈钢腐蚀的影响[J].腐蚀与防护,2015,36(7):603.
[19] LANE R A.Under the microscope:understanding,detecting,and preventing microbiologically influenced corrosion[J].Journal of Failure Analysis and Prevention,2005,5(5):10-12.
[20] LANDOULSI J,COOKSEY K E,DUPRES V.Review-interactions between diatoms and stainless steel:focus on biofouling and biocorrosion[J].Biofouling,2011,27(10):1105-1124.
[21] ATES M.Review study of electrochemical impedance spectroscopy and equivalent electrical circuits of conducting polymers on carbon surfaces[J].Progress in Organic Coatings,2011,71(1):1-10.
[22]简先秀,徐中显.叶绿素锌的作用与研究[J].基层中药杂志,1996,10(3):46-47.
[23] CHEN S,WANG P,ZHANG D.Corrosion behavior of copper under biofilm of sulfate-reducing bacteria[J].Corrosion Science,2014,87:407-415.
[24] DONG Z H,LIU T,LIU H F.Influence of EPS isolated from thermophilic sulphate-reducing bacteria on carbon steel corrosion[J].Biofouling,2011,27(5):487-495.
[25] CHONGDAR S,GUNASEKARAN G,KUMAR P.Corrosion inhibition of mild steel by aerobic biofilm[J].Electrochimica Acta,2005,50(24):4655-4665.
[26] GUNASEKARAN G,CHONGDAR S,GAONKAR S N,et al.Influence of bacteria on film formation inhibiting corrosion[J].Corrosion Science,2004,46(8):1953-1967.