Present paper deals with the performance of imidazoline derivatives (ATs) as corrosion inhibitor for J55 steel in oil field formation water saturated with CO₂. The inhibition effectiveness of AT-1 was found to 90% at 400 mg/L. Inhibitors addition decreases cathodic as well anodic current densities, and significantly strengthens impedance parameters. Contact angle and SEM/AFM/SECM measurements predicts the hydrophobicity and surface morphology of steel, respectively. Density functional theory (DFT) and molecular dynamic simulation (MD) calculations were performed to investigate the adsorption mechanism of ATs. Radial distribution function (RDF) and the mean-square displacement (MSD) were used to study inhibitor/metal interactions and migration rate of corrosive species, respectively.

本文探讨了咪唑啉衍生物（ATs）作为J55钢在CO ₂饱和的油田地层水中的缓蚀剂的性能。发现在400mg / L下AT-1的抑制效率为90％。抑制剂的添加降低了阴极以及阳极的电流密度，并显着增强了阻抗参数。接触角和SEM / AFM / SECM测量分别预测了钢的疏水性和表面形态。进行了密度泛函理论（DFT）和分子动力学模拟（MD）计算，以研究ATs的吸附机理。径向分布函数（RDF）和均方位移（MSD）分别用于研究抑制剂/金属相互作用和腐蚀性物质的迁移速率。