采用动电位极化曲线和电化学阻抗法(EIS),研究了3.5％NaCl(质量分数)溶液中FFFD-27SH型防腐剂对碳钢腐蚀的抑制行为.结果表明,FFFD-27SH为阳极型防腐剂,该防腐剂的加入可有效降低碳钢的腐蚀电流密度,增大腐蚀电位;显著增大碳钢电极的电荷传递电阻和膜电阻,明显降低双电层电容;缓蚀效率随添加浓度增大而增大,当添加浓度大于3％时,缓蚀效率变化不大.
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