Thermally stable diamond abrasive compact body

US4789385A · kind A · utility

Inventors

• Henry B. Dyer · Sandton, ZA
• Cornelius Phaal · Sandton, ZA
• Richard P. Brunand · Kimberley, ZA

Key dates

• Filing date: May 4, 1987
• Grant date: Dec 6, 1988
• Expiry date: May 4, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2237/64
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention provides a composite diamond abrasive compact comprising a thermally stable diamond compact directly bonded to a cemented carbide substrate. The thermally stable diamond compact comprises bonded diamond forming a coherent, skeletal mass and a second phase which preferably consists of silicon and/or silicon carbide. A method of producing the composite diamond abrasive compact under controlled elevated temperature and pressure conditions is also provided.