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Information × Registration Number 0224U031990, 0123U103627 , R & D reports Title Development of new surface modification technologies based on the electrospark alloying method popup.stage_title Head Haponova Oksana P., Доктор технічних наук Registration Date 11-07-2024 Organization Haponova Oksana P. popup.description2 The project is focused on establishing the possibility of controlling the quality of surface layers of parts of critical equipment components by creating coatings on working surfaces using the electrospark alloying (ESA) method, which will allow to significantly implement the methodology for controlling the quality of surface layers of the most critical machine parts. The dependencies of the structure formation and phase composition of the treated surface of carbon steels after the formation of aluminised coatings by ESA using an aluminium electrode and a special technological environment (STE) containing aluminium powder were obtained, and it was shown that after the treatment an increase in the thickness and microhardness of the working layer was achieved. During the study of aluminised coatings, the structural phase state of the modified surfaces was determined as a function of the processing parameters. It is shown that the use of modes with increased parameters increases the thickness, the microhardness of the surface layer, the transition zone, and the roughness. The phase composition of the coatings was determined by X-ray diffraction analysis. Increasing the discharge energy to the formation of intermetallic compounds of iron and aluminium which contribute to the strengthening of the coating. The application of the new method of surface ESA contributes to obtaining a continuous aluminised layer and can be recommended for the production of heat resistant coatings. A mathematical model and a methodology for determining the constants of the equations for predicting the thickness of the aluminised layer, the microhardness, the surface roughness and the maximum layer continuity during ESA aluminisation, taking into account the energy modes of ESA and the processing power, are proposed. An algorithm is proposed to predict the main technological parameters of ESA in order to obtain a given structure and surface properties of critical machine parts. Product Description popup.authors Haponova Oksana P. popup.nrat_date 2024-07-11 Close