Cobalt-bound diamond tools, a process for their manufacture and their use

US5181938A · kind A · utility

Assignee

• Hermann C. Starck Berlin GmbH & Co. KG · DE

Inventors

• Bruno E. Krismer · Goslar, DE
• Georg Nietfeld · Bad Harzburg, DE

Key dates

• Filing date: Feb 4, 1991
• Grant date: Jan 26, 1993
• Expiry date: Feb 4, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C26/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Cobalt-bound diamond tool (e.g. for cutting, drilling polishing) composite materials comprising diamond particles in uniform matrix of cobalt-boron alloy with 1-5 weight percent and uniform, stable and controllable matrix hardness of about 200 to 650 HB.sub.30.