US 12,188,115 B2
Coated cutting tool
Veit Schier, Echterdingen (DE); Johannes Kümmel, Reutlingen (DE); and Wolfgang Engelhart, Metzingen (DE)
Assigned to Walter AG, Tubingen (DE)
Appl. No. 17/609,018
Filed by WALTER AG, Tubingen (DE)
PCT Filed May 5, 2020, PCT No. PCT/EP2020/062370
§ 371(c)(1), (2) Date Nov. 5, 2021,
PCT Pub. No. WO2020/225233, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. 19173276 (EP), filed on May 8, 2019.
Prior Publication US 2022/0213587 A1, Jul. 7, 2022
Int. Cl. C23C 14/06 (2006.01); C23C 14/34 (2006.01); C23C 14/35 (2006.01)
CPC C23C 14/0617 (2013.01) [C23C 14/3485 (2013.01); C23C 14/35 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A coated cutting tool comprising a substrate with a coating including a layer of aluminium nitride having a phase of aluminium nitride (P), the phase of aluminium nitride (P) having an electron diffraction pattern, wherein up to a scattering vector of q=8.16 nm−1 there is at least one additional reflection (R) to any reflection found in the cubic and hexagonal aluminium nitride diffraction patterns.