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the article considers the results of research $\mathrm{T}\mathrm{i}_{3}\mathrm{S}\mathrm{i}\mathrm{C}_{2}$-based powder coatings obtained by detonation spraying on the surface of $\mathrm{U}9/\mathrm{Y}9$ (equivalent to N9) tool steel. It is determined the phase composition of coatings changes during detonation spraying as a result of the decomposition of $\mathrm{T}\mathrm{i}_{3}\mathrm{S}\mathrm{i}\mathrm{C}_{2}$ powder into TiC. The influence of thermal annealing on the phase composition and corrosion resistance of $\mathrm{T}\mathrm{i}_{3}\mathrm{S}\mathrm{i}\mathrm{C}_{2}/\mathrm{T}\mathrm{i}\mathrm{C}$ multiphase coatings was studied. Vacuum thermal annealing ($10^{-2}$ Pa) was performed in the temperature interval of 700-900°C for 1 hour. The results of corrosion tests showed that the corrosion rate of the coated steel sample after annealing 800°C is 5.5 times less than by a comparison of the uncoated steel U9.

this paper discusses the results of studies of the properties of Ni-Cr-Al wear-resistant detonation coatings obtained at different values of the volume of filling the detonation barrel with an explosive acetylene-oxygen mixture. When the barrel is filled with an explosive gas mixture of 40%, the coating is not dense enough, with noticeable boundaries between individual particles, which may be the result of insufficient heating and acceleration of the particles of the sprayed powder. Higher values of microhardness were obtained at 50% filling of the barrel. The results of tribological tests of coatings have shown that the coating applied when the volume of filling the detonation barrel with an explosive mixture is up to 60 %, has a lower wear rate than other coatings. Visible that the mass loss at 50% of the detonation barrel filling volume is less than other coatings

This work showed the study of the features of phase-structural transformations in the titanium-aluminum system during irradiation with silicon ions and heat treatment. It was determined that under the heating of treatment, aluminide phases are formed on the surface of titanium with a thin aluminum coating in accordance with the equilibrium state diagram. It was found that after annealing, a change in the grain size is observed.