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The article considers the efficiency of applying electric spark coatings with the aim of studying the effective influence on the tribological properties of eutectic alloys. Friction and wear tests of electrospark coatings made of the developed eutectic alloy on a steel substrate were performed. In order to compare the effectiveness of the influence on the tribotechnical properties of eutectic alloys, both the coatings in the initial state and the coatings annealed under two different modes were tested. Based on the results of the study of the chemical composition of the films formed in the process of friction, regularities were established by qualitative assessment. The dependences of tribotechnical properties for the initial and heat-treated coatings were determined. These studies indicate the feasibility of using electrospark coatings for different friction conditions. [ABSTRACT FROM AUTHOR]

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This work is a comprehensive study of the structure and properties of plasma eutectic coatings after thermal cyclization. This kind of treatment significantly increases the adhesive-cohesive strength of coatings. According to the results of the conducted research, the resistance against the operation of two-layer coatings in the whole temperature range is higher than for single-layer ones. This effect is achieved by the increase in adhesion properties, a decrease in the hardness gradient along the depth of the coating, and the increase in the coating's thermal stability due to the barrier properties of the doped boride layer. By controlling the size of the dispersed crystals of the penetration phases and at the same time the state of the metal matrix, it is possible to select the TCO modes in which the coatings receive optimal tribotechnical properties. [ABSTRACT FROM AUTHOR]