Application of the scanning reference electrode technique to evidence the corrosion of a natural conducting mineral: pyrite. Inhibiting role of thymol

摘要

The scanning reference electrode technique and voltammetric measurements allow visualising the corrosion currents on the pyrite surface in aerated solutions or in the presence of Fe(Ⅲ). When thymol is present, the oxidation phenomenon is limited. The passivation of the mineral occurs after the previous oxidation of thymol on the pyrite surface.