Coated cutting tool and a method for its production

US11104987B2 · kind B2 · utility

Assignee

• WALTER AG · DE

Inventors

• Veit Schier · Echterdingen, DE
• Ulrich Albers · Haigerloch, DE
• Dominic Diechle · Herrenberg, DE

Key dates

• Filing date: May 22, 2018
• Grant date: Aug 31, 2021
• Expiry date: May 22, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23B2228/10
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A coated cutting tool includes a substrate of cemented carbide, cermet, cBN, ceramics or HSS and a coating of a nitride layer, which is a High Power Impulse Magnetron Sputtering (HIPIMS) deposited layer of a nitride of one or more of Ti, Zr, Hf, V, Ta, Nb, Cr, Si and Al, and a HIPIMS-deposited oxide layer being an (AlaMe1−a)2O3 layer, 0.05≤a≤1, wherein Me is one or more of Ti, Mg, Ag, Zr, Si, V, Fe, Hf, B and Cr. The oxide layer is situated above the nitride layer. Also, a method is disclosed for producing a coated cutting tool having the nitride layer and oxide layer, the nitride layer and the oxide layer being deposited by a HIPIMS process.