MULTILAYER WEAR-RESISTANT COATING ON THE METAL ARTICLE WORKING SURFACE APPLICATION METHOD Russian patent published in 2019 - IPC C23C14/16 C23C14/22 C23C30/00 

FIELD: technological processes.

SUBSTANCE: invention relates to the various articles surface properties directed modification methods and, in particular, to wear-resistant coatings primarily for articles in the form of cutting and die tools, surgical implants, prosthetic implants, as well as friction pairs, which can be synthesized by the ion-plasma methods. Multilayer wear-resistant coating on the metal article working surface application method includes the article placement in the vacuum-arc installation chamber, article working surface cleaning by the ions bombardment and the synthesis of the adhesive, transitional and functional layers by condensation from the plasma phase onto the metal article working surface. Article working surface cleaning is performed by the cathode bombardment with ions of the IV and / or V groups of the Periodic system of chemical elements used in the adhesive layer metals composition at a pressure of 1⋅10^-1–1⋅10^-3 Pa and the voltage on the article of 0.7–1.5 kV until the micro-arcs appearances cessation, followed by an accelerating voltage of 20–30 kV supply to the cathode and the diffusion layer formation in the article. Adhesive layer contains the refractory compound of at least one metal of groups IV and V of the Periodic Table of Chemical Elements, which is contained in the transition layer composition. Transition layer contains a refractory compound of at least one metal of groups IV and V of the Periodic Table of Chemical Elements, which is contained in the functional layer composition. Functional layer contains the aluminum doped compounds of two elements of IV, and / or V, IV, and / or VI groups of the Periodic system of chemical elements. Diffusion layer formation is carried out for a time, making of 300–900 % of the article working surface cleaning time.

EFFECT: enabling significant increase in wear resistance and the friction coefficient reduction, as well as expansion of the technological capabilities of the multilayer wear-resistant coating application on the metal article working surface due to the expansion in the article metals range.

1 cl, 2 dwg, 2 ex