Cutting tool

US4776863A · kind A · utility

Assignee

• Fried Krupp · DE

Inventors

• Hendrikus Van Den Berg · Venlo, NL
• Udo Konig · Essen, DE
• Norbert Reiter · Mettmann, DE

Key dates

• Filing date: Jul 9, 1987
• Grant date: Oct 11, 1988
• Expiry date: Jul 9, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12576
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A cutting tool, in particular of hard metal, which is coated with hard layers of titanium carbide, titanium carbonitride and/or titanium nitride and that has an outer thin layer of zirconium nitride. The thickness of this outer layer of zirconium nitride amounts to between 1 and 30%, preferably 1 to 10%, of the thickness of the base coating of titanium carbide, titanium carbonitride and/or titanium nitride.