The fitted values of R1 in the chloride solutions were gradually decreasing reaching comparable values for AZ31-4Li and AZ31-8Li alloys, while AZ31-4Li alloy had slightly higher resistance. Similar trends were observed for the Y0 parameter of the CPE. In the series of experiments in the solutions with the addition of the permanganate, the value of R1 rapidly increased for all alloys with the first portions of the inhibitor in the solution. It confirms the rapid action of permanganate ions and their effective protective activity. The values of Ceff varied in a wide range of 5×10 -6 -9×10 -4 F/cm 2 in the NaCl solution and 10 -6 -10 -3 F/cm 2 in the case of the solution with the inhibitor, which usually corresponds to surface protective layers .