ELECTROCHEMICAL STUDIES ON CARBON STEEL CORROSION INDUCED BY MIXED COLONIES
混合菌种对碳钢腐蚀行为的电化学研究

The influence of mixed colonies composed of Micrococcus and sulfate-reducing bacteria(SRB) on corrosion behavior of 45 # carbon steel was studied using open circuit potential,polarization curve and AC-impedance.The results indicated that (1) Under the limited growth,the competitive growing relation of Micrococcus and SRB was obvious,and when Micrococcus existed,the rapid growth of SRB was inhibited very much;(2) In the presence of mixed colonies,corrosion rate of 45 # carbon steel was reduced remarkably and (3) A new method was offered to prevent MIC efficiently.