Diamond compact

B - Operations – Transporting – 22 – F

Patent

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Details

B22F 7/06 (2006.01) B24D 3/10 (2006.01) C22C 5/00 (2006.01) C22C 26/00 (2006.01)

Patent

CA 2329351

A method of making a composite diamond abrasive compact which comprises a polycrystalline mass of diamond particles present in an amount of at least 80 percent by volume of the compact, and a second phase containing a diamond catalyst/solvent and a noble metal is provided. The method includes the steps of providing a cemented carbide substrate (20), providing a layer of diamond particles on a surface (26) of the substrate, providing a source of diamond catalyst/solvent and noble metal, for example as a layer between the diamond particles and the surface (26), and causing the diamond catalyst/solvent and noble metal to infiltrate the diamond particles under diamond synthesis conditions producing a diamond compact.

L'invention concerne un procédé de fabrication d'une structure composite compacte abrasive de diamant, qui comporte une masse polycristalline de particules de diamant présente selon une quantité d'au moins 80 pour cent en volume de la structure compacte, et une deuxième phase contenant un catalyseur/solvant de diamant et un métal noble. Le procédé comporte les étapes consistant à prévoir un substrat (20) de carbure cémenté, appliquer une couche de particules de diamant sur une surface (26) du substrat, prévoir une source de catalyseur/solvant de diamant et de métal noble, par exemple comme couche entre les particules de diamant et la surface (26), et provoquer une infiltration du catalyseur/solvant de diamant et du métal noble dans les particules de diamant, dans des conditions de synthèse de diamant permettant de produire une structure compacte de diamant.

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