【摘要】 采用电化学阻抗谱、极化曲线等测试技术,研究了碳钢在不同培养周期下的海水微生物介质中的腐蚀行为。结果表明,海水中未经纯化的微生物使碳钢电极的腐蚀电位负移;电极表面完整均匀微生物膜的存在不改变阴极的极化类型和控制步骤,只对阳极腐蚀过程起加速作用;电化学阻抗谱证实,在有菌存在的条件下,电极的阻抗值下降,微生物的存在会加速碳钢电极的腐蚀作用。更多还原

【Abstract】 The corrosion behavior of carbon steel exposed in the medium of marine microorganizism through different culture cycle was investigated by electrochemical impedance spectra,polarization curves,etc.It was found that the existence of unpurified marine microorganism could move the corrosion potential of carbon steel towards negative,and could not change the polarization style of the cathodic process and control step.The electrochemical impedance spectra showed that the impedance value of the electrode decreased in medium with bacteria,which indicated that the existence of microorganism could accelerate the corrosion progress of carbon steel electrode.更多还原