R. Mediukh, V. Mediukh, V. Labunets, P. Nosko, O. Bashta, I. Kondratenko
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Investigation of Structure Formation and Tribotechnical Properties of Steel Plasma Coatings After Chemical-Heat Treatment and Liquid-Phase Impregnation
Abstract 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.
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