Corrosion resistance of pseudoalloy copper-iron coatings obtained by the electric arc spraying

Keywords

pseudoalloy coatings, electric arc spraying, microstructure, microhardness, phase composition, corrosion resistance.

Cite as

Borisov Yu. S., Vigilianska N. V., Iantsevitсh C. V., and Demianov І. А. Corrosion resistance of pseudoalloy copper-iron coatings obtained by the electric arc spraying. Physicochemical Mechanics of Materials. 2023. 59(2), 98-102.

https://doi.org/10.15407/pcmm2023.02.098

Abstract

High wear and corrosion of parts lead to an increase in operating costs at various plants. These parts can be protected by the electric arc spraying of pseudoalloy protective coatings. The coating was obtained by simultaneous spraying of copper and iron wires. The microstructure was investigated with an electron microscope and the phase composi­tion was assessed by X-ray diffractometry. The porosity and microhardness of the coating were also evaluated. It is shown that such coating has a dense structure and consists of Cu and Fe metallic lamellas together with homogenously distributed minor Cu₂O, FeO oxide phases. The microhardness of the coating is 2.1±0.7 GPa. An electrochemical test of the coating was performed in a 3% NaCl solution. It was found that the pseudoalloy coating of copper-iron system with a thickness of 500 mm have high corrosion resistance in this solution.

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