METHOD FOR PRODUCTION OF MULTI-LAYER COATING FOR CUTTING TOOL Russian patent published in 2016 - IPC C23C14/06 C23C14/24 B23B27/14 

FIELD: nanotechnology.

SUBSTANCE: invention relates to application of multi-layer coating on cutting tool and can be used in machining. Vacuum plasma sandwiched coating is applied. First, lower layer of titanium and zirconium compound nitride is applied at their ratio, wt%: titanium 53.3, zirconium 46.7. Then upper layer of nitride of titanium, zirconium, aluminium and niobium compound is applied at their ratio, wt%: titanium 44.3-52.8, zirconium 29.9-32.4, aluminium 1.3-3.3, niobium 16.0-20.0. Coating plies are applied by three cathodes arranged horizontally in one plane. First cathode is made of titanium, second one consists of zirconium and located opposed to first and third is from alloy of titanium, aluminium and niobium and located between them. Lower layer is applied using first and second cathodes, and upper layer is using all three cathodes. Application of bottom layer is performed at condensation temperature of 600 °C, and upper is at condensation temperature of 300 °C.

EFFECT: technical result is increase of functionality of cutting tool.

2 cl, 1 tbl