The effect of temperature modification on the properties of Fe-based amorphous alloys

We investigated the influence of temperature modification on the physicochemical properties of amorphous alloys Fe80Si6B14, Fe78.5Ni1.0Mo0.5Si6,0B14.0, Fe73.1Cu1.0Nb3.0Si15.5B7.4, Fe51.7Ni21.7Cr6.2Mo0.6V1.5Si5.2B13.1 at T = 77 K during 0.5, 1.0, 2.0, 3.0 hours, and 7, days and at the temperature range (273 ÷ 673) K during 1 hour. After the heat treatment of the amorphous alloys, minor changes in the structure, elemental composition of the surface, and microhardness of materials were observed. The electrochemical characteristics of the samples in the 0.5 M aqueous NaCl solution were determined. The lower corrosion resistance of Fe80Si6B14 alloy and the higher one of Fe51.7Ni21.7Cr6.2Mo0.6V1.5Si5.2B13.1 were established. The surface layers that are formed on the surface of a multicomponent amorphous alloy have the highest resistance.