Ozyilmaz, A. T.Ozyilmaz, G.Colak, N.2024-09-182024-09-1820060257-8972https://doi.org/10.1016/j.surfcoat.2006.04.008https://hdl.handle.net/20.500.12483/9145Aqueous sodium oxalate (NaOX) solutions both without (1) and with (2) p-toluenesulfonic acid (p-TSA) were used to synthesize a poly (aniline-co-o-anisidine) (PANI-co-POA) film on mild steel (MS). Polarization of the substrate in p-TSA containing NaOX solution mixture led to the passivation of the surface mainly via the formation of an iron(II) oxalate layer. Copolymer coatings showed that p-TSA+NaOX solution mixture was a suitable medium for the deposition of a uniform, compact and strongly adherent PANI-co-POA coating on MS electrode. Similar coating was achieved when NaOX solution was used free of p-TSA. It was observed that addition of p-TSA in NaOX solution provided also an increase in electropolymerization rate. Evaluation of the anticorrosion performance of copolymer coatings in 3.5% NaCl solution was investigated by using AC impedance spectroscopy (EIS) technique and anodic polarization curves. Both copolymer coatings exhibited a significant physical barrier property against the attack of corrosive products on mild steel, in longer periods. (c) 2006 Elsevier B.V. All rights reserved.eninfo:eu-repo/semantics/closedAccesscorrosionimpedance spectroscopycopolymermonolayermild steelelectrolyte solutionArticle20162484249010.1016/j.surfcoat.2006.04.0082-s2.0-33750982112Q1WOS:000244831800050Q2