Journal of Physical Studies 26(4), Article 4801 [7 pages] (2022)
DOI: https://doi.org/10.30970/jps.26.4801

THE EFFECT OF TEMPERATURE MODIFICATION ON THE PROPERTIES OF Fe-BASED AMORPHOUS ALLOYS

O. M. Hertsyk^{1} , T. H. Hula^{1} , M. O. Kovbuz^{1} , O. A. Ezers'ka^{2}, Yu. O. Kulyk^{1}, N. L. Pandiak^{3}
^{1}Ivan Franko National University of Lviv,
6, Kyrylo \& Mefodiy St., Lviv, UA–79005, Ukraine,
^{2}Fraunhofer Institut Fertigungstechnik Materialforschung,
Wiener Stra{\ss}e 12, 2835, Bremen, Germany,
^{3}Ukrainian National Forestry University, 103, General Chuprynka St., Lviv, UA–79057, Ukraine,
e-mails: o_hertsyk@yahoo.com, djunjer1@gmail.com
Received 27 March 2022; in final form 01 August 2022; accepted 02 August 2022; published online 01 December 2022

We investigated the influence of temperature modification on the physicochemical properties of amorphous alloys Fe${}_{80}$Si${}_{6}$B${}_{14}$,${}_{\ }$Fe${}_{78.5}$Ni${}_{1.0}$Mo${}_{0.5}$Si${}_{6,0}$B${}_{14.0}$, Fe${}_{73.1}$Cu${}_{1.0}$Nb${}_{3.0}$Si${}_{15.5}$B${}_{7.4}$, Fe${}_{51}$${}_{.}$${}_{7}$Ni${}_{21}$${}_{.}$${}_{7}$Cr${}_{6}$${}_{.}$${}_{2}$Mo${}_{0}$${}_{.}$${}_{6}$V${}_{1}$${}_{.}$${}_{5}$Si${}_{5}$${}_{.}$${}_{2}$B${}_{13}$${}_{.}$${}_{1}$ at $T = 77$ K during 0.5, 1.0, 2.0, 3.0 hours, and 7, days and at the temperature range ($273 \div 673$) 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 Fe${}_{80}$Si${}_{6}$B${}_{14}$ alloy and the higher one of Fe${}_{51}$${}_{.}$${}_{7}$Ni${}_{21}$${}_{.}$${}_{7}$Cr${}_{6}$${}_{.}$${}_{2}$Mo${}_{0}$${}_{.}$${}_{6}$V${}_{1}$${}_{.}$${}_{5}$Si${}_{5}$${}_{.}$${}_{2}$B${}_{13}$${}_{.}$${}_{1}$ were established. The surface layers that are formed on the surface of a multicomponent amorphous alloy have the highest resistance.

Key words: amorphous metallic alloys, temperature modification, structural characteristics, electrochemical properties.

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