METHOD OF PRODUCING WEAR RESISTANT COATING FOR CUTTING TOOL Russian patent published in 2015 - IPC C23C14/06 C23C14/24 B23B27/14 

FIELD: process engineering.

SUBSTANCE: invention relates to application of wearproof coating on cutting tool and can be used in machining. Vacuum-plasma application of wearproof coating is performed, coating being composed of titanium, aluminium, chromium and niobium nitride or carbonitride at the following ratio, wt %: titanium - 56.37, aluminium - 9.37, silicon - 0.86, chromium - 21.26, niobium - 12.14. Application is executed by three cathodes arranged horizontally in one plane. First cathode are made of titanium and silicon alloy and arranged in opposition, second cathode is made of titanium and aluminium and arranged opposite the first one while third cathode is made of chromium and niobium and arranged there between.

EFFECT: higher cutting efficiency.

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