METHOD OF NANOCOMPOSITE COATING APPLICATION ONTO STEEL ARTICLE SURFACE Russian patent published in 2015 - IPC C23C14/35 C23C8/36 B82Y30/00 

FIELD: machine building.

SUBSTANCE: products are cleaned in a vacuum chamber in the inert gas medium, with further execution of ionic etching, ion-plasma nitriding alternating with ionic etching and application of nanocomposite coating using the method of physical vapour deposition using magnetrons. The temperature of thin-walled and thick-walled parts of products is levelled during cleaning of products in the medium of inert gas, ionic etching, ion-plasma nitriding alternating with ionic etching and application of nanocomposite coating by placement of products so that the thin-walled part of one product to be located between thick-walled parts of other products. The named application of nanocomposite coating is performed by application of microlayer composed of nanolayers with the thickness 1-100 nm from the titanium and chromium and the subsequent application of microlayer of nanolayers 1-100 nm from titanium and chromium nitrides. In specific applications of the invention the titanium and chromium microlayer is applied with the thickness 0.3-0.8 mcm by consecutive passing of the product in front of magnetrons with targets from the named materials. The microlayer of titanium and chromium nitrides is applied with the thickness 2.5-3 mcm by consecutive passing of the product in front of magnetrons with titanium and chromium targets when feeding into the nitrogen chamber.

EFFECT: increase of coating service life in conditions of erosion, corrosion and high temperatures.

3 cl, 1 tbl, 1 ex