Title:
POLYCRYSTALLINE DIAMOND
Document Type and Number:
WIPO Patent Application WO/2010/100629
Kind Code:
A3
Abstract:
An embodiment of a PCD insert comprises an embodiment of a PCD element joined to a cemented carbide substrate at an interface. The PCD element has internal diamond surfaces defining interstices between them. The PCD element comprises a masked or passivated region and an unmasked or unpassivated region, the unmasked or unpassivated region defining a boundary with the substrate, the boundary being the interface. At least some of the internal diamond surfaces of the masked or passivated region contact a mask or passivation medium, and some or ail of the interstices of the masked or passivated region and of the unmasked or unpassivated region are at least partially filled with an infiltrant material.
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Inventors:
LIVERSAGE JOHN HEWITT (ZA)
SCOTT DANNY EUGENE (US)
SITHEBE HUMPHREY SAMKELO LUNGISANI (ZA)
NAIDOO YVONNE KAVESHINI (ZA)
KAISER BRONWYN ANNETTE (ZA)
FISH MICHAEL LESTER (IE)
SCOTT DANNY EUGENE (US)
SITHEBE HUMPHREY SAMKELO LUNGISANI (ZA)
NAIDOO YVONNE KAVESHINI (ZA)
KAISER BRONWYN ANNETTE (ZA)
FISH MICHAEL LESTER (IE)
Application Number:
PCT/IB2010/050975
Publication Date:
December 29, 2010
Filing Date:
March 08, 2010
Export Citation:
Assignee:
ELEMENT SIX LTD (IE)
ELEMENT SIX PRODUCTION PTY LTD (ZA)
BAKER HUGHES INC (US)
LIVERSAGE JOHN HEWITT (ZA)
SCOTT DANNY EUGENE (US)
SITHEBE HUMPHREY SAMKELO LUNGISANI (ZA)
NAIDOO YVONNE KAVESHINI (ZA)
KAISER BRONWYN ANNETTE (ZA)
FISH MICHAEL LESTER (IE)
ELEMENT SIX PRODUCTION PTY LTD (ZA)
BAKER HUGHES INC (US)
LIVERSAGE JOHN HEWITT (ZA)
SCOTT DANNY EUGENE (US)
SITHEBE HUMPHREY SAMKELO LUNGISANI (ZA)
NAIDOO YVONNE KAVESHINI (ZA)
KAISER BRONWYN ANNETTE (ZA)
FISH MICHAEL LESTER (IE)
International Classes:
C22C26/00; E21B10/567
Domestic Patent References:
| WO2009125355A1 | 2009-10-15 |
Foreign References:
| US20070079994A1 | 2007-04-12 |
Attorney, Agent or Firm:
SPOOR & FISHER et al. (0001 Pretoria, ZA)
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