A combination of electrochemical measurement and interface analysis have been applied to characterise the interaction of OMID, an exemplar imidazoline-based corrosion inhibitor, with carbon steel in 1 M hydrochloric acid. Corrosion inhibition efficiency data indicate that excellent performance is achieved well below the critical micelle concentration. High resolution X-ray photoelectron spectra demonstrate that, as the corrosion rate decreases, the interface evolves towards one comprising OMID bound to film-free carbon steel. This latter result provides key input for those researchers attempting to predict corrosion inhibitor functionality through atomic scale interfacial modelling, and so identify next generation chemistries.

电化学测量和界面分析相结合已用于表征OMID（一种基于咪唑啉的典型缓蚀剂）与碳钢在1 M盐酸中的相互作用。腐蚀抑制效率数据表明，在低于临界胶束浓度的条件下仍可获得出色的性能。高分辨率X射线光电子能谱表明，随着腐蚀速率的降低，该界面向包含与无膜碳钢结合的OMID的界面发展。后一个结果为那些试图通过原子尺度界面建模来预测腐蚀抑制剂功能并确定下一代化学物质的研究人员提供了重要的信息。