We study the corrosion resistance of an amorphous cobalt-based alloy (AMA) by the method of cyclic voltammetry (VA) in a 1 M KOH aqueous medium at different temperatures varying from 293 to 333°K. It is shown that, as a result of fivefold cyclic polarization of electrodes within the range from – 1.5 to + 0.5 V, the corrosion potential shifts to the cathodic side and, in solutions with temperatures of 313–333°K, takes almost identical values. The corrosion current density in AMA becomes eight times higher as the temperature of solution increases to 313°K. The corrosion resistance of AMA used in the reaction of hydrogen release becomes higher as follows from the values of current density that are twice lower than for the alloys in the intact state. The computed values of corrosion activation energy are equal to 18.65 and 17.86 kJ/mole for the first and fifth cycles of the VA curve, respectively. This corresponds to the diffusion-controlled interaction of hydroxyl ions with the surfaces of AMA electrodes. We computed the activation energy of formation of compounds on the AMA surface. It was established that the [Co–O–H2O]ads chemisorbed complex is formed with a twice higher activation energy than the passivating layers.
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References
T. T. Shun, L. Y. Chang, and M. H. Shiu, “Age-hardening of the CoCrFeNiMo0.85 high-entropy alloy,” Mater. Charact., 81, 92–96 (2013).
О. М. Hertsyk, М. О. Kovbuz, L. M. Boichyshyn, T. G. Pereverzeva, and O. V. Reshetnyak, “Influence of alloying on the corrosion resistance of bulk amorphous alloys based on iron,” Fiz.-Khim. Mekh. Mater., 53, No. 3, 37–42 (2017); English translation: Mater. Sci., 53, No. 3, 330–336 (2017).
A. Pardo, M. C. Merino, E. Otero, M. D. López, and A. M’Hich, “Influence of Cr additions on corrosion resistance of Fe- and Co-based metallic glasses and nanocrystals in H2SO4,” J. Non-Cryst. Solids, 352, 3179–3190 (2006).
Y. J. Yang, Z. S. Jin, X. Z. Ma, Z. P. Zhang, H. Zhong, M. Z. Ma, X. Y. Zhang, G. Li, and R. P. Liu, “Comparison of corrosion behaviors between Ti-based bulk metallic glasses and its composites,” J. Alloys Comp., 750, 757–764 (2018).
A. Zarebidaki, A. Seifoddini, and T. Rabizadeh, “Corrosion resistance of Fe77Mo5P9C7.5B1.5 in-situ metallic glass matrix composites,” J. Alloys Comp., 736, 17–21 (2018).
L. Bednarska, S. Mudry, M. Kovbuz, B. Кotur, O. Hertsyk, G. Haneczok, and M. Karolus, “Nanocrystallization and structure of Fe78.5Ni1.0Mo0.5Si6.0B14.0 amorphous alloy,” J. Non-Cryst. Solids, 354, No. 35–39, 4359–4362 (2008).
B. V. Neamtu, H. F. Chicinas, T. F. Marinca, O. Isnard, and I. Chicinas, “Preparation and characterization of Co–Fe–Ni–M–Si–B (M = Zr, Ti) amorphous powders by wet mechanical alloying,” J. Alloys Comp., 673, 80–85 (2016).
M. R. J. Jezeh, M. Tavoosi, A. Ghasemi, and R. Farshadnia, “Metastable phases in Co70B20Si5Fe4Mo1 alloy fabricated by nonequilibrium processes,” J. Non-Cryst. Solids, 427, 26–33 (2015).
D. M. Minić, A. M. Maričić, R. Z. Dimitrijević, and M. M. Ristić, “Structural changes of Co70Fe5Si10B15 amorphous alloy induced during heating,” J. Alloys Comp., 430, 241–245 (2007).
L. Bednarska, B. Kotur, M. Kovbuz, A. Budniok, and E. Lagiewka, “The structure, morphology and electrochemical impedance study of the passivation layers on the surface of the Co–Fe–Si–B–M amorphous metallic alloys,” J. Physics: Conf. Ser., No. 79, 012033–012937 (2007).
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 56, No. 5, pp. 88–92, September–October, 2020.
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Lopachak, М.М., Khrushchyk, K.І., Dnistryan, V.V. et al. Corrosion Resistance of Co77Si11B12 Amorphous Metal Alloys for the Electrodes of Hydrogen Release from Alkaline Solutions. Mater Sci 56, 673–677 (2021). https://doi.org/10.1007/s11003-021-00481-x
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DOI: https://doi.org/10.1007/s11003-021-00481-x