EVALUATION DE L’EFFICACITE INHIBITRICE DE TROIS DERIVES FERROCENIQUES VIS-A-VIS DE LA CORROSION DE L’ACIER XC70 PAR LA SPECTROSCOPIE D’IMPUDENCE ELECTROCHIMIQUE

In this work, we studied the efficacy of corrosion inhibition of carbon steel X70 in HCl 1M solution using ferrocenyl compounds prepared in VPRS laboratory, these compounds are: N-(ferrocenyl methyl)-2-nitro aniline(Fc12), N-(ferrocenyl methyl)-3-nitro aniline(Fc13) and N-(ferrocenyl methyl)-4-nitro aniline(Fc14). The inhibitory potency of these compounds was determined by the electrochemical impedance spectroscopy (EIS). The overall results show that these compounds have varying percentages of inhibition. The adsorption of these compounds on the surface of the metal is a chemical adsorption. In HCl 1M, the compound Fc12 had the best ability of inhibition at a concentration of 70ppm (R = 91.24%).