METHOD FOR OBTAINING WEAR-RESISTANT COATING BASED ON INTERMETALLIDE OF Ti-Al SYSTEM Russian patent published in 2019 - IPC C23C14/16 C23C14/24 

FIELD: machine building.

SUBSTANCE: invention relates to the field of mechanical engineering, in particular to obtaining wear-, impact-, heat-, crack- and corrosion-resistant coatings, and can be used to increase the reliability and durability of a wide range of machine parts and tools. This method for obtaining a wear-resistant multilayer coating based on intermetallic compounds of the Ti-Al system includes placing the steel part to be processed in a vacuum chamber, containing a plasma source with an incandescent cathode and two electric arc evaporators in the form of cathodes of aluminum and titanium, located in the same plane opposite each other, ion cleaning using a plasma source with an incandescent cathode in argon medium when the part is heated to a temperature of 300–350 °C for 30 minutes, ion cleaning using an electric arc evaporator in an inert gas environment when the part surface is heated to a temperature of 400–450 °C, deposition of the lower layer of titanium on the detail by means of an electric arc evaporator with a titanium cathode, applying the next layer on the basis of the intermetallic nitride of the Ti-Al system in the medium of the reaction gas of nitrogen at a pressure of 6⋅10^-4 mmHg while simultaneously spraying the two mentioned electric arc evaporators, application of a layer based on the intermetallic compound of the Ti-Al system in argon at a pressure of 2⋅10^-3 mmHg. Application of said coating layers is assisted by a plasma source with a filament cathode. Above detail is rotated in a vacuum chamber at a speed of 1 rpm to form a coating with different intermetallic phases of the Ti-Al system.

EFFECT: homogeneity of the phase composition throughout the coating volume, uniform thickness of the coatings on parts of complex shape and the ability to control the phase composition are ensured by assisting the deposition process with a plasma source with an incandescent cathode.

7 cl, 2 dwg, 1 ex