Polarization studies on zinc in hydrochloric acid solution containing someorganic solvents

The corrosion behaviour of zinc metal in some organic solvents was tested e lectrochemically using galvanometric polarization measurements, The results showed that the studied organic solvents act as mixed type inhibitors, The inhibition was assumed to occur via physical adsorption of the inhibitor m olecules fitting a Temkin's isotherm, The inhibition eficiency of the solve nts increase in the order: glycerol>ethylene glycol>DMSO>dioxane. This orde r is not affected by the variation in temperature in the range 35-55 degree s C. The increase in temperature was found to increase the corrosion in abs ence and in presence of inhibitors. Some thermodynamic parameters for adsor ption were also computed and discussed.