METHOD FOR OBTAINING COATING BASED ON Ti-Al SYSTEM SYNTHESIZED IN NITROGEN AND ACETYLENE ENVIRONMENT Russian patent published in 2022 - IPC C23C14/24 C23C14/16 C23C14/02 C23C14/06 C23C14/34 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to the field of mechanical engineering and can be used in tool production for surface hardening of metal-cutting tools. A coating based on the Ti-Al system is obtained by applying it to a workpiece 2 by vacuum-arc deposition from two electric arc evaporators from single-component cathodes made of titanium 3 and aluminum 4; in the chamber, the working pressure is 8⋅10^-3-5⋅10^-2 Pa, ion cleaning, heating and surface activation are carried out in two stages, and its heating at the first stage is carried out to a temperature of 300-350°C using a high-current plasma source with a hollow cathode 5 in an inert argon gas environment, at the second stage, the surface of part 2 is heated to a temperature of 400-450°C by electric arc evaporators in an inert argon gas environment, after which the first layer of titanium is applied in an argon inert gas environment, after which a coating is applied based on the Ti system -Al in a mixture of nitrogen and acetylene gases with the formation of phases TiN, AlN, TiAl, Ti₃Al, TiAl₃, TiC, TiAlC while assisting the process with a high-current plasma m source also using a hollow cathode.

EFFECT: improving the quality, durability and uniformity of the coating.

1 cl, 2 dwg, 1 tbl