CUTTING TOOL WITH COATING AND METHOD FOR ITS PRODUCTION Russian patent published in 2017 - IPC C23C28/04 B23B27/14 C23C14/06 

FIELD: technological processes.

SUBSTANCE: invention relates to a cutting tool having a wear-resistant multilayer coating for machining metals with chip removal and a method for manufacturing said cutting tool. This coating comprises a multilayer structure consisting of alternating layer A of Zr_1-xAl_xN, where 0<x<1, and a layer B of TiN, and an intermediate layer C between said alternating layers A and B forming the sequence A/C/B/C/A/C/B… with the thickness of the individual layer A and layer B from 1 to 30 nm. The layer C comprises one or more metal elements from each of the layers A and B and differs in composition and structure from said alternating layers A and B. The method for manufacturing said cutting tool comprises depositing a multilayer structure consisting of the above alternating layers A and B forming a sequence A/B/A/B/A… to form at least a portion of the coating, and heat treating said coating to form an intermediate layer C between said alternating layers A and B to form a sequence A/C/B/C/A/C/B.

EFFECT: cutting tool with a wear-resistant thermally stable coating with a high hardness under the influence of temperatures equal to 1100 degrees, and improved performance in machining is obtained.

17 cl, 1 dwg, 1 tbl, 11 ex