Polycrystalline diamond
AssigneesElement Six Abrasives S.A., Element Six Limited
InventorsHabib Saridikmen, Iain Patrick Goudemond, Antionette Can, Roger William Nigel Nilen, Clement David van der Riet
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Abstract
A method for making a polycrystalline diamond (PCD) construction comprises providing a cemented carbide substrate comprising carbide grains cemented together by a cement material, subjecting the substrate to a first pressure treatment, treating the substrate to remove at least some of the cement material from at least a region of the substrate adjacent a boundary defined by the substrate, and subjecting the substrate to a second pressure treatment, in contact with or bonded at the boundary to a diamondiferous structure.
Claims8
A method for making a polycrystalline diamond (PCD) construction, the method including
- placing an aggregate mass of diamond grains onto a cemented carbide substrate comprising carbide grains cemented together by a cement material;
- subjecting the aggregate mass and the substrate to a first pressure treatment to form a sintered construction comprising a diamondiferous structure joined to the substrate at a boundary during the first pressure treatment, wherein the diamondiferous structure comprises a PCD structure;
- treating the construction to remove at least some of the cement material from at least a region of the substrate adjacent the boundary;
- and
- subjecting the substrate to a second pressure treatment.
Dependencies are inferred from the claim text.