METHOD OF RECEIVING OF MULTILAYER COATING FOR CUTTING TOOL Russian patent published in 2009 - IPC C23C14/06 C23C14/16 C23C14/34 B23B27/14 

FIELD: metallurgy.

SUBSTANCE: invention relates to methods of application of wear-resistant coatings on cutting tool and can be used in metal-working manufacturing. Method includes vacuum-plasma application of multilayer coating. It is applied bottom layer from nitride or carbonitride of compound titanium, chrome and aluminium at its ratio, wt % - titanium 75.0-77.0, chrome 10.4-11.5, aluminium 12.6-13.5. It is applied intermediate layer from nitride or carbonitride of compound titanium, chrome, zirconium and aluminium at its ratio, wt % - titanium 69.5-73.5, chrome 6.8-7.5, zirconium 11.3-14.0, aluminium 8.4-9.0 and top - from nitride or carbonitride of compound titanium, chrome and zirconium at its ratio, wt % - titanium 68.0-73.0, chrome 10.0-11.0, zirconium 17.0-21.0. There are used three cathodes located horizontally in the same plane, the first of which is implemented as compound from titanium and aluminium, the second from titanium and zirconium and located oppositely the first, and the third - from titanium and chrome and located between them.

EFFECT: workability increasing of cutting tool.

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