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高氯环境中饱和CO2对13Cr油管钢腐蚀行为的影响

, PP. 95-99

Keywords: 13Cr油管钢,饱和CO2,腐蚀行为

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Abstract:

采用电化学阻抗(EIS)、极化曲线、电化学噪声(EN)和扫描电子显微镜(SEM)研究了高氯环境中饱和CO2对13Cr油管钢腐蚀行为的影响。结果表明饱和CO2加速材料的腐蚀,增大了腐蚀的发生频率,使材料的腐蚀由点蚀转变为均匀腐蚀。碳酸对钝化膜的去羟基化作用和增大钝化膜的导通率,是材料腐蚀行为变化的原因。

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