Plasma-chemical synthesis of nanocrystalline "core-shell" structures TiN-Mo-Co

In this work, the possibilities of formation of nanocrystalline powders based on titanium nitride with participation of Mo and Co under conditions of plasma-chemical synthesis have been studied.Synthesis was performed according to the plasma recondensation scheme using low-temperature nitrogen plasma.All the obtained highly dispersed powders were certified by X-ray diffraction and scanning electron microscopy.The characteristics of the disperse composition of the recondensed TiN-Mo-Co products were determined by the calculation based on the pycnometric density and specific surface area data.The possibility of formation of a "core-shell" structure was confirmed using chemical methods by etching ultraand nanodispersed powders in solutions of dilute HCl to remove the cobalt shell and concentrated hydrogen peroxide H 2 O 2 to neutralize metallic Mo.Based on the information about "quasi-equilibrium state" of the products of plasma-chemical synthesis in a low-temperature gas plasma, a chemical model for the formation of nanocrystalline particles is proposed.