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1 Acta Mechanica et Automatica

1 2022

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Investigation of structure formation and tribotechnical properties of steel plasma coatings after chemical-heat treatment and liquid-phase impregnation

Mediukh Roman, Mediukh Vira, Labunets Vasyl, Nosko Pavlo, Bashta Oleksandr, Kondratenko Irina

Acta Mechanica et Automatica

2022

Vol. 16, no. 4

382--387

The paper is focused on the studies of the microstructure development and physical and mechanical properties of metal-matrix composite coatings based on steel 11Cr18MoWCu deposited using plasma and galvanoplasma methods. The expediency of combining gas-thermal spraying processes of plasma coatings with open porosity up to 16%–18%, with their subsequent thermodiffusion saturation (chromium plating) or liquid-phase impregnation with eutectic alloys of previously applied Ni–B galvanic layer, is shown. The study of the tribotechnical properties of the proposed coatings showed a significant improvement in their performance under conditions of various types of intensive wear, as well as in corrosive environments.