Ozyilmaz, A. T.Akdag, A.2024-09-182024-09-1820110020-29671745-9192https://doi.org/10.1179/174591911X13077162170188https://hdl.handle.net/20.500.12483/9140Polyaniline (PANI), poly(N-methylaniline) (PNMA) and poly(aniline-co-N-methylaniline) (PANI-co-PNMA) coatings were synthesised on stainless steel (SS) surface (AISI 316) in two different supporting solutions, oxalic acid and sulphamic acid. PNMA and PANI-co-PNMA films failed to be synthesised in sulphamic acid solution. Homo-and copolymer films were achieved as homogenous and adherent structures as shown in scanning electron images. Electrochemical corrosion properties of homo-and copolymer films were investigated in 3.5% NaCl solution by electrochemical techniques including a potentiodynamic method and ac impedance spectroscopy. Potentiodynamic studies proved that the PNMA coating had a better electroactive structure in comparison with homo-and copolymer coatings. The results showed that homo- and copolymer coatings exhibited an effective barrier property on a SS electrode and a remarkable anodic protection to the substrate for a longer exposure time. A superior corrosion protection property was obtained by PNMA coating by providing enhanced catalytic efficiency for the formation of protective oxide layers on the metal surface.eninfo:eu-repo/semantics/closedAccessCorrosion resistanceConducting polymersCoatingsEISSEMArticle89421522410.1179/174591911X130771621701882-s2.0-80052257790Q2WOS:000294426800013Q1