FIELD: chemical, engineering, mining and oil industries.
SUBSTANCE: invention relates to a method for obtaining a corrosion-resistant coating on parts of a friction pair and can be used in the chemical, engineering, mining and oil industries, in tool and repair industries to improve the protective properties of the surface of the tool and friction pairs in an aggressive environment. The part of the friction pair in the tooling is cleaned in a glow discharge of two magnetrons with chromium targets in an argon medium. Then, ion cleaning of the part of the friction pair is carried out by two arc evaporators with a titanium target. After that, a chromium sublayer and alternating layers of chromium nitride and chromium and aluminum nitride with a crystallite diameter of 30-50 nm are applied to the friction pair part using two magnetrons with chromium targets and two magnetrons with aluminum targets at a bias voltage on the friction pair parts - 80-90 B. The deposition of alternating layers is repeated at least two times. An amorphous layer of chromium and aluminum nitride is applied with the top layer at a nitrogen content of 20-25% for at least 10-15 minutes. The part of the friction pair is fixed on the spokes of the substrate holder, rotating in the planetary mechanism at a rotation speed of 20-25 rpm, while the temperature of the part of the friction pair is 200-250°C.
EFFECT: obtaining a coating with high corrosion-resistant, wear-resistant, impact-resistant and crack-resistant properties and high adhesive strength of the sublayer with the substrate material and between the layers.
1 cl, 7 dwg
