海水中舟形藻对Q235碳钢腐蚀行为的影响
Effect of Navicula on Corrosion of Q235 Carbon Steel in Natural Seawater
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。
舟形藻
微生物腐蚀
SEM
电化学
Q235 carbon steel
navicula
microbiological corrosion
SEM
electrochemistry
Abstract
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.
中图分类号 TG174 DOI 10.11973/fsyfh-201901001
所属栏目 试验研究
基金项目 国家自然科学基金项目（41376003；41006054）资助；中国科学院战略性先导科技专项（A类）（XDA13040405）
收稿日期 2017/8/9
修改稿日期
网络出版日期
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引用该论文: LIN Mengxiao,ZHANG Jie,HU Xiuhua,YANG Dongfang,HOU Baorong. Effect of Navicula on Corrosion of Q235 Carbon Steel in Natural Seawater[J]. Corrosion & Protection, 2019, 40(1): 1
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【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】GÓMEZ 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 11 supported 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.
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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.
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