SURFACE MODIFICATION OF THE AMORPHOUS METALLIC ELECTRODES
Journal Title: Праці Наукового товариства ім. Шевченка - Year 2017, Vol 48, Issue
Abstract
Different methods of the amorphous electrodes modification were analyzed. It was investigated by electrochemical methods (potentiometry, cyclic voltammetry, electrochemical impedance spectroscopy) the effect of modification by heat treatment, alternating magnetic field and oligoperoxides on the electrochemical characteristics of the amorphous alloys Fe80,0Si6,0B14,0, Fe78,5Ni1,0Mo0,5Si6,0B14,0, Fe73,1Cu1,0Nb3,0Si15,5B7,4, Fe59,0Ni26,0Cr6,6Mo0,9V1,6W0,3Si3,0B2,9. It was shown the efficiency of the combined modification for increasing the corrosion resistance of the amorphous alloys surface. The Fe59,0Ni26,0Cr6,6Mo0,9V1,6W0,3Si3,0B2,9 alloy is mostly characterized by the highest affinity for oligomeric molecules. Sufficiently high adhesion is also observed in the case of Fe78,5Ni1,0Mo0,5Si6,0B14,0 alloy. It can be argued that the application of molybdenum facilitates the fixation of oligomeric molecules. The analysis of the voltamperometric study results of the Fe78,5Ni1,0Mo0,5Si6,0B14,0 samples, on the surface of which the oligoperoxide layer was formed and pre-maintained in a magnetic field or in the case of reverse modification, showed that the highest resistance to dissolution has the surface of the alloy after application of the oligoperoxide film and the subsequent one-hour action of the alternating magnetic field. In the same sequence of combined treatment, the three-hour exposure in the alternating magnetic field is not effective.
Authors and Affiliations
Oksana HERTSYK, Myroslava KOVBUZ, Tetiana PEREVERZIEVA, Sofiia SHURKO, Bogdan KOTUR
Keywords
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