Cutting tool with oxide coating

US8025991B2 · kind B2 · utility

Assignee

• WALTER AG · DE

Inventor

• Veit Schier · Echterdingen, DE

Key dates

• Filing date: Sep 7, 2005
• Grant date: Sep 27, 2011
• Expiry date: May 31, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C30/005
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

By using the PVD process, cutting tools are provided with a coating that is a mono-phase ternary or more complex oxide. By appropriately defining the involved major component and minor component in terms of atom percent, the distortions of the formed oxide can be controlled in a specific manner and in order to influence the properties of said oxide. Alternatively, the layer may contain an amorphous oxide phase with oxide crystallites embedded therein. The oxide crystallites may be binary, ternary or more complex. One or more different types of crystallites may be present adjacent to each other.