MULTI-LAYER COMPOSITE COATING WITH NANO CRYSTAL STRUCTURE ON CUTTING TOOL AND PROCEDURE FOR ITS FABRICATION Russian patent published in 2011 - IPC C23C14/06 C23C14/24 C23C14/48 

FIELD: metallurgy.

SUBSTANCE: coating contains adhesion, transient and wear resistant alloys out of refractory compounds. Also, an adhesion layer contains at least one element from composition of a transient layer and/or its compound. The transient layer contains a refractory compound of metals of IV and/or V groups of the periodic table, at least one of which is taken from composition of a wear resistant layer. The wear resistant layer contains refractory compounds of metals from IV and/or V, and/or VI groups alloyed with aluminium and has nano-crystal structure.

EFFECT: upgraded indices of tool functionality, increased efficiency of processing and increased physical-mechanical characteristics of processed surfaces of parts.

5 cl, 1 dwg, 1 tbl