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The purpose of this work is to justify the feasibility of using the technology of microplasma sputtering from wire materials to obtain porous coatings for biomedical purposes, the modulus of elasticity of which is close to the corresponding characteristic of human cortical bone tissue. Analyzed the influence of the technological parameters of the microplasma sputtering regime on the degree of porosity of the coating. As a result, it was found that a decrease in current strength and consumption of plasma-forming gas, as well as a decrease in the speed of feeding the sprayed wire into the plasma jet lead to an increase in the porosity of the coatings. Even though these parameters are interrelated, for each individual material are limited by certain limit values, in case of nonobservance of which the stable process of melting and dispersion of the sprayed wire in the plasma jet becomes impossible. Established the limit parameters of the microplasma sputtering process for titanium alloy VT1-00 and zirconium alloy KTC-110, which allows obtaining a coating with maximum porosity. Conducted studies of the adhesion strength of the obtained coatings, formed through a low-porous sublayer, with the maximum degree of porosity according to the ASTM C633- 13 (2017) method which proven that the indicators of the adhesion strength of the coatings to the VT6 titanium alloy base at normal separation meet the requirements of the international quality standard ISO 13179- 1:2021.

The purpose of this work is to develop a design and experimental technique for determining the modulus of elasticity of one of the layers of a two-layer bar of rectangular cross section during bending, provided that the modulus of elasticity of the other layer is known. In this part of the work, using the transition formulas of relatively parallel axes, a mathematical expression has been obtained to determine the bending stiffness of a two-layer rectangular section, which does not include distances from the centers of weight of sections of layers to the pivot center of weight of the entire section, which, in turn, depend on the elastic modules of layers. The presence of such an expression made it possible to form an algebraic equation in which the modulus of elasticity of one of the layers can act as an unknown. As a result, the mathematical connection of the unknown modulus of elasticity with the known modulus of elasticity of the other layer, geometric dimensions of layers and bending stiffness of the entire section was established, which should be determined experimentally.

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