Electrochemical Properties of Ternary Amorphous Alloys Based on Iron and Cobalt in Alkali Solutions

We study the electrochemical behavior of Fe 80 Si 6 B 14 , Co 72 Si 18 B 10 , and Fe 84 Nb 2 B 14 amorphous metal alloys based on Fe and Сo in alkali solutions of different concentrations. The protective oxide layers on Fe 80 Si 6 B 14 electrodes have lower degrees of corrosion protection than for the Co 72 Si 18 B 10 electrodes. Niobium clusters in the Fe 84 Nb 2 B 14 alloy are reactive, which results in the rapid initial interaction of the electrode with a 1 М aqueous solution of KОН, which is retarded under the conditions of long-term contact with ions of the electrolyte. The Fe 80 Si 6 B 14 and Fe 84 Nb 2 B 14 alloys are characterized by a similar electrochemical behavior in 1 M and 5 М aqueous solution of KOH under the conditions of cyclic polarization of samples in corrosive media. As a result of fivefold scanning of the potential, it is shown that the electrochemical properties of the electrodes made of amorphous metallic alloys depend on the electrolyte concentration.