In the work, the influence of the composition of the electrolyte on the electrophysical parameters of the synthesis of coatings with increased biocompatible properties was studied. It was established that under conditions of increased electrolyte concentration, the voltage at which the coating is synthesized decreases. This effect can be explained by the thermodynamic Gibbs conditions. According to these conditions, the system needs more energy when the medium contains more elements, which must consume a certain amount of energy. The authors found that sodium salts increase the conductivity of the working environment. This effect affects the speed of the synthesis process and can reduce the cost of the energy reserve of the system as a whole. Spectral analysis established that during the synthesis of a titanium alloy in an alkaline electrolyte, an equilibrium non-degenerate quasi-ideal plasma is realized in the discharge channel with a temperature of \((1\dots 1.1)\times {10}^{4}\,K\) and an electron density of \((3.2\dots 3.4)\times {10}^{22}{\rm m}^{3}\) . Under these conditions, molecules dissociate into ions and interact with the electrolyte's components, leading to oxidation of the surface of valve metals and the formation of stable compounds with high biocompatible properties.