Abstract

Three nonionic surfactants molecules (NS) derived from a fused pyridine characterized by IR and ¹HNMR spectra were synthesized and examined as inhibitors for the corrosion of aluminum (Al) in a solution of HCl (0.5M). Galvanostatic polarization, weight loss and electrochemical impedance measurements were utilized to detect the corrosion parameters. Efficiency of the percentage inhibition increases with increasing concentration of NS molecules and with lowering temperature and surface parameters such as the surface and the interfacial tension. These results led to strong adhesion between the Al surface and NS molecules. NS molecules served as a mixed inhibitor. NS molecules protect the Al from the corrosive attack by its adsorption on its surface according to Langmuir isotherm. The sequence of inhibition efficiency is based on the chemical composition of the examined NS. The activation thermodynamic parameters were determined and interpreted.

中文翻译：

---

盐酸溶液中铝缓蚀剂稠合吡啶表面活性化合物的合成与评价

摘要

源自稠合吡啶的三种非离子表面活性剂分子 (NS)，其特征在于 IR 和¹合成 HNMR 谱并检查其作为铝 (Al) 在 HCl (0.5M) 溶液中腐蚀的抑制剂。利用恒电流极化、重量损失和电化学阻抗测量来检测腐蚀参数。百分比抑制的效率随着 NS 分子浓度的增加以及温度和表面参数（例如表面和界面张力）的降低而增加。这些结果导致铝表面和 NS 分子之间的强粘附。NS分子充当混合抑制剂。根据朗缪尔等温线，NS 分子通过将铝吸附在其表面上来保护铝免受腐蚀攻击。抑制效率的顺序基于所检查 NS 的化学成分。确定和解释活化热力学参数。