Research on Characterization of Micro-Biofilm at the Interface of Harbor Water

海洋科学前沿 Abstract Micro-biofilm is the initial stage of the formation of fouling biological community, to control the metal corrosion and biological fouling process, and bring serious harm to human maritime activities and the normal operation of marine facilities. Exploring the formation of micro-biofilm is the key to the research of marine anticorrosion and antifouling. In this paper, the micro-biofilm on the surface of industrial pure titanium in Qingdao Harbor was preliminarily characterized by SEM, EDS, XRD and FTIR. The electrochemical behavior of micro-biofilm was analyzed by Tafel polarization curve. The results show that only the complete morphology of diatoms, Na, Ca, Si and organic matter are present. The density of micro-biofilm on the slide is higher than that on the titanium plate, and the effect of micro-biofilm on the electrochemical performance of titanium is not obvious. The analysis method of micro-organisms in the membrane was discussed, which provides some implications for the research of micro-biofilm and the application of titanium in seawater.