A self assembled films (SA) of cupper phthalocyanine (CuPh) chemisorbed on the mild steel sur face was coated by an inorganic organic sol gel hybrid coating. Hybrid sol was synthesized via acid catalyzed hydrolysis and condensation of methacryloxypropyl trimethoxysilane (TMSM) and tetraethoxysilane (TEOS) at the molar ratio of 1 : 1. The morphology of mild steel coated with TMSM/TEOS and CuPh was examined by SEM. The surface chemistry of the hybrid sol gel coatings was investigated with polarization scans and electrochemical impedance spectroscopy (EIS) in aerated 0.5 mol L -1 HCl solution. Self assem bled CuPh films coated under the hybrid coating showed a strong influence on its corrosion resistance, mainly when the samples have 24 h immersion time and 1 mM concentration.
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