For all alloys in the same time period, the stabilized OCP value was around -1.5 V (Fig. ), and it did not fluctuate much over time. The oxidizing character of the dissolved permanganate also affects the OCP, which has risen to higher positive values at the beginning of the experiment in the presence of all studied concentrations of permanganate ions. This might be an indication of corrosion retardation. . The stabilized OCP shifted in the anodic (nobler) direction when the concentration of the inhibitor in the solution increased. This is a sign that a manganese-rich layer has been deposited on the surface. However, AZ31-12Li had a longer time to reach the stabilized OCP, suggesting that it is more prone to corrosion.