Electrochemical parameters of cobalt amorphous alloys in aggressive environments of various nature

Keywords

cobalt amorphous alloys, corrosion resistance, electrochemical characteristics.

Cite as

Hertsyk О. М., Yezerska O. A., Nosenko V. K., Havryliak N. M., and Pаndiak N. L. Electrochemical parameters of cobalt amorphous alloys in aggressive environments of various nature. Physicochemical Mechanics of Materials. 2024. 60(4), 108-114.

https://doi.org/10.15407/pcmm2024.04.108

Abstract

The corrosion resistance of contact and outer surfaces of strips of amorphous metal alloys based on cobalt Co_72.0Fe_5.0Si_11.0B_12.0, Co_73.2Fe_4.3Mn_0.5Si_5.3B_16.7, Co_73.3(Fe, Ni, Mo, Mn)_5.7 (Si_0.2B_0.8)₂₁ in aqueous solutions of HCl, NaCl and NaOH was investigated. The Co_72.0Fe_5.0Si_11.0B_12.0 alloy has the lowest corrosion resistance in all investigated aggressive environments. Partial replacement of Co and Fe by Mn, as well as Ni, Mo slightly increases the corrosion resistance of the material due to the formation of dense oxide layers on the surface.

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