The Corrosion Behavior of Cu-Ni-Si alloy in Sea Water with Deep-Sea Bacteria

摘要

The corrosion behavior of Cu-Ni-Si alloy exposed to a nutrient-rich simulated seawater-based nutrient-rich medium in the presence of a deep-sea bacterial {Erythrobacter pelagi sp.nov) was investigated by metallographic microstructure observation, electrochemical impedance spectroscopy (EIS) measurement. It was demonstrated that the charge transfer resistance (Rct) and the resistance of oxide film(Rf) dramatically increased within 2 Days then gradually decrease and becoming stable because of an patchy or blotchy biofilm formed on the surface of the alloy.