PROCEDURE FOR CUTTING TOOL MULTI-LAYER COATING Russian patent published in 2011 - IPC C23C14/24 B23B27/14 

FIELD: machine building.

SUBSTANCE: two-layer coating is applied on working surfaces of cutting tool by vacuum-plasma procedure. As a lower layer there is applied titanium and molybdenum carbonitride or titanium and chromium carbonitride, or silicon and titanium carbonitride, or titanium and aluminium carbonitride, or titanium and iron carbonitride, or titanium and zirconium carbonitride. As an upper layer there is applied the same carbonitride alloyed with nyobium.

EFFECT: increased functionality of cutting tool and upgraded quality of processing.

2 cl, 1 tbl