Polyaniline (PANI) is extensively researched as a corrosion protection coating for mild steel (MS) against acidic and neutral media. Corrosion inhibition performance of PANI coating on MS depends on the electrolytic solution employed for polymerization. In this study, the electropolymerization of aniline onto MS using sodium potassium tartrate (Na-K tartrate) and benzoic acid in the alcohol-water (BAW) medium is reported. The composition of BAW system was optimized and used for electropolymerization of aniline for the first time. The results showed the formation of a passive yet electro-conductive layer before the polymerization initiated. A compact layer with a fine structured PANI coating in both media was obtained. Cyclic voltammetry (CV) produced a stable PANI coating without showing anodic current in the cathodic scan. The concentration of aniline and electrolytes were optimized for better coating conditions. The prepared PANI coating was characterized by Fourier-transform infrared (FTIR) spectroscopy, Ultraviolet-visible (UV–vis) spectroscopy, Scanning electron microscope (SEM) in combination with energy dispersion spectrometer (EDX) and X-ray diffractometer (XRD). The results of PANI coating in Na-K tartrate and BAW medium are compared with a standard PANI coating prepared in oxalic acid medium. The inhibition efficiencies of PANI coating obtained in Na-K tartrate and BAW were estimated to be 82.5 % and 99.99 %, respectively in 0.1 M NaCl solution.

聚苯胺（PANI）作为低碳钢（MS）对酸性和中性介质的腐蚀防护涂层而被广泛研究。PANI涂层在MS上的腐蚀抑制性能取决于用于聚合的电解液。在这项研究中，报道了在酒水（BAW）介质中使用酒石酸钠钾（酒石酸钾）和苯甲酸将苯胺电聚合到MS上。优化了BAW体系的组成，并将其首次用于苯胺的电聚合。结果表明，在聚合反应开始之前，形成了一层被动而又导电的层。获得了在两种介质中均具有精细结构化的PANI涂层的致密层。循环伏安法（CV）产生稳定的PANI涂层，而在阴极扫描中未显示阳极电流。优化了苯胺和电解质的浓度，以获得更好的涂布条件。通过傅立叶变换红外（FTIR）光谱，紫外可见（UV-vis）光谱，扫描电子显微镜（SEM）结合能量色散光谱仪（EDX）和X射线衍射仪（XRD）对制备的PANI涂层进行了表征。将酒石酸钠和BAW介质中PANI涂层的结果与在草酸介质中制备的标准PANI涂层的结果进行了比较。在0.1 M NaCl溶液中，酒石酸钠和BAW中获得的PANI涂层的抑制效率估计分别为82.5％和99.99％。扫描电子显微镜（SEM）结合能量色散光谱仪（EDX）和X射线衍射仪（XRD）。将酒石酸钠和BAW介质中PANI涂层的结果与在草酸介质中制备的标准PANI涂层的结果进行了比较。在0.1M NaCl溶液中，酒石酸钠和BAW中获得的PANI涂层的抑制效率估计分别为82.5％和99.99％。扫描电子显微镜（SEM）结合能量色散光谱仪（EDX）和X射线衍射仪（XRD）。将酒石酸钠和BAW介质中PANI涂层的结果与在草酸介质中制备的标准PANI涂层的结果进行了比较。在0.1 M NaCl溶液中，酒石酸钠和BAW中获得的PANI涂层的抑制效率估计分别为82.5％和99.99％。