Investigation of inhibition effects of some organic substances on the corrosion of mild steel in acidic medium

The inhibiton effect of 2-aminophenol (2-AP), 4-amino-m-cresol (4-AC), 6-amino-m-cresol (6-AC) ve Tyramine (TY) on the corrosion of mild in 0.1 M H2SO4 solution have been investigated in relation to the concentrations and temperatures. The electropolimerization of 6-amino-m-cresol that polimerization feature determined, has been formed on platinum electrode surface in 0.1 M Na2SO4 solution with pH 5, 7 and 9. The inhibiton effect of studied molecules have been determined by using electrochemical methods. The most effective one of inhibitor has been found TR, in which the molecules have been found moderate active inhibitor. Adsorption free energies, activation energies and potential of zero charges have been indicated that the adsorption of 2-AP, 4-AC, 6-AC and TY on mild steel surface, became with physical interactions.