Polycrystalline diamond compact, methods of fabricating same, and applications therefor
AssigneeUS Synthetic Corporation
InventorMichael A. Vail
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Abstract
Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) comprising a polycrystalline diamond (“PCD”) table including a catalyst material therein that has been implanted with ions (e.g., carbon ions) and/or infiltrated from a host material implanted with carbon ions. In an embodiment, a PDC comprises a substrate and a PCD table bonded to the substrate. The PCD table includes a plurality of bonded diamond grains defining a plurality of interstitial regions. The PCD table includes an upper surface from which a region inwardly extends. At least a portion of the interstitial regions of the region includes a catalyst material disposed therein. At least a portion of the catalyst material may be at least saturated with carbon.
Claims20
A method of fabricating a polycrystalline diamond compact, comprising:
- implanting carbon ions into a cementing constituent of a region of a substrate;
- infiltrating a plurality of diamond particles with the implanted cementing constituents from the substrate;
- and
- sintering the plurality of diamond particles in the presence of the infiltrated and implanted cementing constituent to form a polycrystalline diamond table.
A method of fabricating a polycrystalline diamond compact, comprising:
- implanting carbon ions into a cementing constituent of a region of a cemented carbide substrate;
- positioning an at least partially leached polycrystalline diamond table adjacent to the region of the cemented carbide substrate implanted with the carbon ions to form an assembly;
- subjecting the assembly to a high-pressure/high-temperature process;
- and
- at least partially infiltrating the at least partially leached polycrystalline diamond table with at least some of the cementing constituent from the region of the cemented carbide substrate, in response to the high-pressure/high-temperature process, to form an at least partially infiltrated polycrystalline diamond table.
Dependencies are inferred from the claim text.