Electrochemical methods for monitoring the performance of a novel Triazole derivative as a corrosion inhibitor in the acidic medium

The present investigation includes the study of corrosion inhibition effect of 5-(2-aminophenyl)-4h-3,4-diamine1,2,4-triazolehydrobromide (adt) on carbon steel in 1m hcl by electrochemical measurements. the obtained results showed that inhibition efficiency increased with the increasing concentration of inhibitor and decreased with increase in temperature. potentiodynamic polarization curves indicate that adt was acting as mixed type of inhibitor. the inhibition efficiency was found to increase with adt concentration to attain 90% with 10-3m. langmuir adsorption isotherm model was employed to determine the equilibrium of adsorption for inhibiting process in adt inhibitor. nyquist plots revealed that,as the concentration of the inhibitor increases,double layer capacitance (cdl) while charge transfer resistance (rct) increases. attempt to correlate the molecular structure to quantum chemical indices was made using density functional theory (dft). © 2017,university of mohammed premier oujda morocco.