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利用邻氧乙酸苯甲醛缩间氨基苯甲酸钾席夫碱（K2L2）缓蚀刺在20号碳钢表面制备了自组装膜（SAMs），用电化学方法研究缓蚀荆合成原料摩尔比、自组装时间、温度对成膜缓蚀率的影响。结果表明，KOH与邻氧乙酸苯甲醛按摩尔比2：1反应得到的K2L2缓蚀剂，在碳钢表面自组装1h后，形成稳定、致密的缓蚀膜，缓蚀率为94．24％。随温度升高，缓蚀膜在模拟油田水中的缓蚀率先降低后升高。在模拟油田水中浸泡48h后，由扫描电镜照片发现，组装缓蚀膜钢片表面较光滑，而空白样表面腐蚀严重，有较多晶体颗粒产生。K2L2SAMs抑制了碳钢的阴极还原过程，改变了电极表面双电层结构，使零电荷电位负移，固／液界面双电层电容明显降低，缓蚀效果良好。K2L2的吸附行为符合Langmuir吸附等温式，吸附机理是典型的化学吸附，吸附平衡常数为7．496×10^4／mol。图12表7参19,By using 2-[ (3-carboxyl) phenyl imin omethylene ] phenoxyacetic acid (K2 L2) as corrosion inhibitor, the self-assembled monolayers (SAMs) were prepared on the surface of carbon steel. And the effects of mole ratio of raw material for synthesis of the corrosion inhihitors, self-assembly time and temperature on inhibition efficiency of the film were investigated by electrochemical method. The results showed that K212 inhibitor synthesized by KOH and O-formylphenoxyacetic acid in molar ratio 2:1 could take shape fairly dense stable corrosion SAM on carbon steel surface after 1 h assambling, and the inhibition efficiency was of 94.24%. With increasing temperature, the inhibition efficiency of inhibitory film on carbon steel in simulated oilfield water decreased first and increased subsequently. The scanning electron microscope research showed that the surface of carbon steel with inhibitory film immersed in simulated oilfield water 48 hrs was glazed. However, that of blank sample corroded seriously and some crystalline particles were produced. The structure of double-electric layer on carbon steel electrode surface was changed by K2 I2 SAMs and the potential of zero charge (PZC) shifted along a negative direction. In addition, the SAMs restrained the process of cathodic reduction and had well anticorrosion effect. The adsorption behavior of K2L2 SAMs followed Langmuir’s adsorption isotherm formula, and the adsorption mechanism was typical chemisorptions with adsorption equilibrium constant 7. 496 × 10^4 L/mol.