The current work outlines the impact of acetylacetone (AcAc) in the alkaline surface treatment bath on durability and the anti-corrosion properties of electro-galvanized steel (EGS) coated with a hybrid silane composition. The surface characteristics of the EGS samples before and after modifications were appraised using atomic force microscopy, field emission scanning electron microscopy, and contact angle measurements confirming the changes in roughness, morphology and wettability properties imposed by surface treatments. To elucidate the chemical composition of the protecting layer developed on the surface of EGS, X-ray photoelectron spectroscopy was utilized which evidently endorsed forming a film consisting of zinc hydroxide, zinc oxide, and zinc acetylacetonate. The corrosion resistance of the specimens during immersion in 3.5 % NaCl medium was determined using electrochemical impedance spectroscopy and polarization experiments. The low-frequency impedance (at 0.01 Hz) of silane-coated samples modified in the optimal condition (0.5 M NaOH bath) in the presence and absence of AcAc was respectively ca. 15,900, 5800 Ω·cm². The electrochemical results corroborated the overriding role of a trace amount of AcAc in the corrosion protection of silane-coated EGS samples. The novel surface treatment proposed in this work provides improved corrosion protection of silane coating on EGS having the lowest i_corr and presenting inhibition efficiency of 74 % in polarization experiment.

目前的工作概述了碱性表面处理浴中乙酰丙酮 (AcAc) 对涂有混合硅烷组合物的电镀锌钢 (EGS) 的耐久性和防腐性能的影响。使用原子力显微镜、场发射扫描电子显微镜和接触角测量对改性前后 EGS 样品的表面特性进行了评估，确认了表面处理所施加的粗糙度、形态和润湿性特性的变化。为了阐明在EGS表面形成的保护层的化学成分，利用X射线光电子能谱表明形成了由氢氧化锌、氧化锌和乙酰丙酮锌组成的薄膜。3. 浸没过程中试样的耐腐蚀性能。使用电化学阻抗谱和极化实验测定 5% NaCl 介质。在存在和不存在 AcAc 的情况下，在最佳条件（0.5 M NaOH 浴）下改性的硅烷涂层样品的低频阻抗（0.01 Hz）分别为约。15,900, 5800 Ω·cm² . 电化学结果证实了痕量 AcAc 在硅烷涂层 EGS 样品的腐蚀保护中的首要作用。这项工作中提出的新型表面处理提供了改进的 EGS 上硅烷涂层的腐蚀保护，具有最低的i _corr并且在极化实验中呈现出 74% 的抑制效率。