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The current trend towards constant updating of technologies in mechanical engineering to increase the competitiveness of products requires the creation of new materials to achieve the required functional properties [1, 2]. In this regard, structural engineering is the most effective method for achieving the required material properties [3, 4]. This method is especially effective for highly non-equilibrium conditions of material formation, when process modeling is not possible due to the multiparametry and uncertainty of the final solutions [5, 6]. Such processes include methods of surface modification by plasma flows [7, 8]. In this case, the modification of the structure and surface properties of materials takes place both in the base material and by forming a new type of material with the required properties on the surface [9, 10]. The first type is the modification of the base material properties through the implantation of modifying elements. In this case, there is a change in the phase-structural state of the base [11, 12]. In this direction, the method of ionic nitriding has received the greatest development [13, 14]. The use of the second type of surface modification provides a qualitatively new phase composition and surface properties. This turned out to be especially effective when new physical and mechanical properties need to be achieved [15, 16]. The use of highly ionized controlled ion-plasma flows made it possible to obtain superhigh mechanical properties for this type of modification. For this, two scientific and practical approaches were used: by optimizing the composition [17] and by creating new types of multilayer composites with nanothick layers [18]. The main problem in the case of creating new materials on the surface is their adhesion to the base material. In this sense, a universal method of surface modification is the growth of a coating with the required properties Copyright © 2020, V. Subbotina, O. Sobol’, V. Belozerov

eastern-european journal of enterprise technologies

Identification of regularities of formation of the phase-structural state and properties of coatings obtained by micro-arc oxidation of high-strength V95 alloy