Issues »  Volume 38, Issue 7

Effect of Alternating Magnetic Field on Formation of Surface Protective Layers on Fe—Si—B-Electrodes in Aggressive Aqueous Solutions

O. M. Hertsyk$^{1}$, T. G. Pereverzeva$^{1}$, M. O. Kovbuz$^{1}$, L. M. Boichyshyn$^{1}$, V. K. Nosenko$^{2}$, O. Yu. Rudenko$^{2}$

$^{1}$Lviv Polytechnic National University, 12 Bandera Str., 79013 Lviv, Ukraine
$^{2}$G.V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03680 Kyiv-142, Ukraine

Received: 25.05.2016; final version - 08.06.2016. Download: PDF

The dependence of the Fe—Si—B-electrodes’ protective surface layer resistance on the 0.5—3.0 hour pre-exposition in an alternating magnetic field with frequency of 50 Hz and intensity of 470 mT is experimentally determined. Estimation of the electrode surface stability in 0.5 M aqueous solutions of NaCl, HCl, and NaOH is carried out by means of the chronopotentiometry and voltammetry methods. As found, the electrochemical surface resistance in all aggressive solutions varies nonlinearly depending on the duration of pre-exposition in an alternating magnetic field. Practically, contact surface of the electrode is activated after one hour holding in an alternating magnetic field, and external surface–after two hours. Results of the electrochemical investigations show a decreasing of the surfaces activity after 3 hours exposition in an alternating magnetic field because of compaction of surface oxide—hydroxide layers.

Key words: amorphous alloys, alternating magnetic field, aggressive environment, chronopotentiometry, voltammetry, oxide—hydroxide layers.

URL: http://mfint.imp.kiev.ua/en/abstract/v38/i07/0889.html

DOI: https://doi.org/10.15407/mfint.38.07.0889

PACS: 75.50.Bb, 75.50.Kj, 81.65.Kn, 81.65.Mq, 82.45.Bb, 82.45.Fk, 82.80.Fk

Citation: O. M. Hertsyk, T. G. Pereverzeva, M. O. Kovbuz, L. M. Boichyshyn, V. K. Nosenko, and O. Yu. Rudenko, Effect of Alternating Magnetic Field on Formation of Surface Protective Layers on Fe—Si—B-Electrodes in Aggressive Aqueous Solutions, Metallofiz. Noveishie Tekhnol., 38, No. 7: 889—902 (2016) (in Ukrainian)

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