Polycrystalline composites reinforced with elongated nanostructures

US7862634B2 · kind B2 · utility

Assignee

• SMITH INTERNATIONAL, INC. · US

Inventors

• J. Daniel Belnap · Pleasant Grove, US
• Guodong Zhan · Spring, US
• Xiayang Sheng · Sugar Land, US
• Youhe Zhang · Spring, US
• Madapusi K. Keshavan · Sandy, US
• Harry H. Pratt · Orange, US
• Yuelin Shen · Houston, US

Key dates

• Filing date: Nov 13, 2007
• Grant date: Jan 4, 2011
• Expiry date: Nov 13, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C2026/002
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A sintered polycrystalline composite for cutting tools that includes a plurality of diamond or cubic boron nitride particles; a plurality of nanotube materials; and a refractory or binder material is disclosed. Methods of forming such polycrystalline composites that include integrating or mixing a plurality of nanotube materials with diamond or cubic boron nitride particle and/or refractory or binder particles are also disclosed.