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1. (WO2018138255) COATED CUTTING TOOL

Pub. No.:    WO/2018/138255    International Application No.:    PCT/EP2018/051950
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Jan 27 00:59:59 CET 2018
IPC: C23C 28/04
C23C 16/40
C23C 30/00
Applicants: WALTER AG
Inventors: STIENS, Dirk
MANNS, Thorsten
Title: COATED CUTTING TOOL
Abstract:
The present invention relates to a coated cutting tool comprising a substrate and a coating, wherein the coating comprises an inner layer of 4-14 µm thick Ti1-xAlxN, an intermediate layer of 0.05-1 µm TiCN and at least one outer layer of 1-9 µm α-Al2O3, wherein said α-Al2O3 layer exhibits an X-ray diffraction pattern, as measured using CuKα radiation and theta-2theta scan, and the texture coefficient TC(hkl) is defined according to Harris formula, wherein the (hkl) reflections used are (0 2 4), (1 1 6), (3 0 0) and (0 0 12), I(hkl) = measured intensity (peak intensity) of the (hkl) reflection, l0(hkl) = standard intensity according to ICDD's PDF-card No. 00-042-1468, n = number of reflections used in the calculation, and 3 < TC(0 0 12) < 4.