Coated cutting tool

US12188115B2 · kind B2 · utility

Assignee

• WALTER AG · DE

Inventors

• Veit Schier · Echterdingen, DE
• Johannes Kümmel · Reutlingen, DE
• Wolfgang Engelhart · Metzingen, DE

Key dates

• Filing date: May 5, 2020
• Grant date: Jan 7, 2025
• Expiry date: Jun 19, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C28/044
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A coated cutting tool includes a substrate having a coating including a layer of aluminium nitride, which has a phase of aluminium nitride (P). The phase of aluminium nitride (P) has 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.