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
Attachment of Navicula on Pseudomons Aeruginosa PAO1 Biofilm and Its Corrosion Behavior on 316L Stainless Steel
摘 要
为了揭示海洋微藻在菌膜上的附着规律及其对金属腐蚀的影响,采用原子力显微镜测试探究舟形藻在铜绿假单胞菌菌膜条件下的附着,并通过电化学阻抗谱和动电位极化曲线方法研究菌膜存在与舟形藻附着对316L不锈钢腐蚀的影响.结果表明,在附着前期菌膜抑制舟形藻的附着,后期则促进舟形藻的附着.电化学测试结果显示,舟形藻的存在增大了316L不锈钢的腐蚀倾向,并使腐蚀速率增大;而菌膜的附着一定程度上抑制了舟形藻对316L不锈钢的腐蚀.
电化学阻抗谱
舟形藻
铜绿假单胞菌PAO1
316L不锈钢
attachment
EIS
navicula
pseudomons aeruginosa PAO1
316 stainless steel
Abstract
The attachment of microalgae navicula on pseudomons aeruginosa PAO1 biofilm and its influence on the electrochemical behavior of 316L stainless steel were investigated by atomic force microscopy (AFM),electrochemical impedance spectroscopy (EIS) and dynamic potential polarization curve for a better understanding on the attachment of marine microalgae on metal material and its impact on metal corrosion.The results showed that the bacteria biofilm inhibited navicula attachment in the initial stage and promoted navicula attachment in the later stage.Electrochemical results revealed that navicula attachment on 316L stainless steel increased the corrosion tendency of 316L stainless steel,and increased the corrosion rate.However,the bacteria biofilm in some extent inhibited the corrosion of 316L stainless steel.
中图分类号 TG174.3 DOI 10.11973/fsyfh-201507002
所属栏目 试验研究
基金项目 国家自然科学基金项目(40976046);国家重点基础研究发展计划(2014CB643304)
收稿日期 2014/7/1
修改稿日期
网络出版日期
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备注段继周(1972-),博士,研究员,从事海洋微生物腐蚀与生物污损的基础和应用研究工作.
引用该论文: GUAN Fang,ZHAI Xiao-fan,DUAN Ji-zhou,ZHANG Jie,HOU Bao-rong. Attachment of Navicula on Pseudomons Aeruginosa PAO1 Biofilm and Its Corrosion Behavior on 316L Stainless Steel[J]. Corrosion & Protection, 2015, 36(7): 603
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参考文献
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【14】高运华,李建军.微生物粘膜对海洋大型污损生物附着的影响[J].材料开发与应用,1999(4):19-21,41.
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