摘要
采用304不锈钢作为实验对象,利用荧光显微分析和极化曲线、交流阻抗(EIS)谱图和孔蚀曲线等电化学测试手段研究了304不锈钢在天然海水浸泡过程中表面微生物膜的附着生长情况,并考察了微生物膜的附着对304不锈钢腐蚀性能的影响。结果发现,304不锈钢在海水中浸泡5 d之后表面已附着微生物膜,且随着时间延长,膜中细菌数量逐渐增加;在微生物膜附着初期,微生物膜的存在使304不锈钢耐全面腐蚀性能有所提高,且对材料的孔蚀倾向也有一定的抑制作用。
Using fluorescence microscope and electrochemical testing methods such as polarization curve, Electrochemical impedance spectroscopy （EIS） and ring anode polarization curve the influence of biofilm on the corrosion performance of 304 stainless steel was studied. The results showed that after soaked for 5days in the nature seawater the sample is already adhered by the biofilm. The bacteria in biofilm on sample surface improves the resistance of general corrosion and reduces the possibility of occurring pit corrosion.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2013年第5期721-724,共4页
Marine Environmental Science
基金
海洋公益性行业科研专项经费资助项目(201005028-3)
关键词
微生物膜
细菌
腐蚀性能
电化学测试
biofilm
bacteria
corrosion performance
electrochemical test
