Optimization of the preparation of oligoperoxide films on an amorphous metallic surface Fe-(Ме)-Si-B

Abstract

Investigations of the corrosion resistance of protecting oligoperoxide coatings on magnetic soft amorphous metallic alloys constitute an important task for technical applications these materials. The influence of the oligoperoxide concentration, chemical composition of the amorphous alloy (Fe 78.5 Ni 1.0 Mo 0.5 Si 6.0 B 14.0 or Fe 73.1 Cu 1.0 Nb 3.0 Si 15.5 B 7.4) and the time of film creation on the stability of the coating was investigated by electrochemical impedance spectroscopy (EIS), potentiometry, electron microscopy, and measurements of the wetting angle. Oligoperoxides based on vinyl acetate, 2-tert-butylperoxy-2-methyl-5-hexene-3-yne and maleic anhydride were used in the experiments. The effect of the factors mentioned above on the film formation process on the surface of amorphous alloys is discussed.