Two novel amido-amine-based cationic surfactants, namely, 3-decanamido-N,N,N-trimethylpropan-1-aminium methyl sulfate (DAMS) and N-(3-decanamidopropyl)-N,N-dimethylbutan-1-aminium bromide (DABB) were prepared and their chemical structures were elucidated via various spectroscopic tools. The surface activities of the targeted prepared surfactants were investigated. Utilizing potentiodynamic polarization, hydrogen evolution, and weight loss methods, the inhibition impact of both synthesized surfactants on aluminum corrosion in solution with 0.5 M HCl was studied. The effect of raising both temperature and surfactant concentration on the inhibition efficiency was studied and the thermodynamic functions were calculated and clarified. Langmuir adsorption isotherm fitted widely with the empirical data. At all concentrations and temperatures, it was found that the inhibition efficiency for DAMS is greater than that of DABB.

中文翻译：

---

两种新型合成的酰胺基阳离子表面活性剂在 0.5 M HCl 溶液中对铝腐蚀的缓蚀作用研究

两种新型酰胺基阳离子表面活性剂，即 3-癸酰胺-N,N,N-三甲基丙烷-1-甲基硫酸铵 (DAMS) 和N- (3-癸酰胺丙基) -N,N制备了-二甲基丁-1-溴化胺（DABB），并通过各种光谱工具阐明了它们的化学结构。研究了目标制备的表面活性剂的表面活性。利用动电位极化、析氢和失重方法，研究了两种合成表面活性剂在 0.5 M HCl 溶液中对铝腐蚀的抑制作用。研究了提高温度和表面活性剂浓度对抑制效率的影响，计算并阐明了热力学函数。Langmuir吸附等温线与经验数据广泛吻合。在所有浓度和温度下，发现 DAMS 的抑制效率高于 DABB。