This work aims to be a contribution in the field of corrosion control and proposes to study the effect of molar hydrochloric acid on mild steel (MS) in the presence and in the absence of 11-(Bis((1H-pyrazol-1-yl)methyl)amino)undecanoic acid(L4), employing the gravimetric method and stationary (PDP) and transient electrochemical (EIS) techniques. In addition to the experimental measurements employed in our study, DFT and molecular dynamic simulation (MDS) were employed. The inhibitory performance of this compound increases with its concentration as well as the temperature of the aggressive medium to reach a value of 99.5% at at 10⁻³ M and at the temperature 308 K. It can be found that L4 is a mixed-type corrosion inhibitor predominantly anodic. The thermodynamic study has shown that its adsorption is chemical in nature and follows the Langmuir isotherm model. The DFT and MD results are correlating with the experimentally obtained results.

这项工作旨在为腐蚀控制领域做出贡献，并建议研究存在和不存在11-（Bis（（1H-pyrazol-1-yl）时，摩尔盐酸对低碳钢（MS）的影响）甲基）氨基）十一酸（L4），采用重量法，固定（PDP）和瞬态电化学（EIS）技术。除了在我们的研究中采用的实验方法外，还采用了DFT和分子动力学模拟（MDS）。该化合物的抑制性能随其浓度和侵蚀性介质的温度而增加，在10 ^-3时达到99.5％的值M 4和温度为308K。可以发现L4是主要为阳极的混合型缓蚀剂。热力学研究表明，其吸附本质上是化学的，并且遵循Langmuir等温模型。该DFT和MD结果与实验得到的结果相关。