Title:
SUPER-HARD ENHANCED HARD-METALS
Document Type and Number:
WIPO Patent Application WO/2009/128034
Kind Code:
A8
Abstract:
The present invention relates to a super-hard enhanced hard-metal comprising particulate hard material and a binder and at least one formation, the formation comprising a core cluster and a plurality of satellite clusters, spaced from, surrounding and smaller than the core cluster, and the core cluster and satellite clusters each comprising a plurality of contiguous super- hard particles. The invention further relates to a method for making a super- hard enhanced hard-metal, the method including forming a green body comprising super-hard particles, particles of a hard material and at least one binder material or material that is capable of being converted into a binder material; subjecting the green body to a temperature of at least 500 degrees centigrade and a pressure at which the super-hard material is not thermodynamically stable to form a sintered body; and subjecting the sintered body to a pressure and temperature at which the super-hard material is thermodynamically stable and to inserts for tools comprising the enhanced hard-metal.
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Inventors:
NILEN ROGER WILLIAM NIGEL (ZA)
Application Number:
PCT/IB2009/051567
Publication Date:
August 12, 2010
Filing Date:
April 15, 2009
Export Citation:
Assignee:
ELEMENT SIX PRODUCTION PTY LTD (ZA)
NILEN ROGER WILLIAM NIGEL (ZA)
NILEN ROGER WILLIAM NIGEL (ZA)
International Classes:
C22C26/00; C22C29/02
Attorney, Agent or Firm:
SPOOR & FISHER et al. (0001 Pretoria, ZA)
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