Abstract
The anodic behaviour of pure, recrystallized iron in acid sulphate and perchlorate solutions free of oxygen and surface active substance was investigated in the potential range between the active and passive state. The measurements were carried out using an iron rotating disk electrode by cyclic voltammetry under quasi-steady-state conditions with compensation of the ohmic drop. The determined kinetic data confirm mainly the previously proposed dissolution mechanism. The shortened form of this mechanism is ▪ The iron dissolution kinetics was found to be independent of the anion concentration in the overall potential range. New results with regard to the passivation and reactivation potentials of the metal are discussed.
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