In-situ boron doped pdc element
AssigneeNational Oilwell DHT, L.P.
InventorsJiinjen Albert Sue, Harold Sreshta
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Abstract
A polycrystalline diamond compact formed in an in-situ boron-doped process. The in-situ boron-doped process includes consolidating a mixture of diamond crystals and boron-containing alloy via liquid diffusion of boron into diamond crystals at a pressure greater than 5 Gpa and at a temperature greater than the melting temperature of the boron-containing alloy, typically less than about 1450° C.
Claims17
1-21. (canceled)
A polycrystalline diamond compact, comprising:
- a layer of polycrystalline diamond integrally formed in a high-temperature, high-pressure process, the layer comprising a generally uniform mixture comprising:
- polycrystalline diamond material comprising boron-doped diamond crystals;
- and
- at least one of Ni, Co and Fe-base alloys.
An earth boring drill bit, comprising:
- at least one polycrystalline diamond cutting element comprising:
- a layer of polycrystalline diamond integrally formed in a high-temperature, high-pressure process, the layer comprising a generally uniform mixture comprising:
- polycrystalline diamond material comprising boron-doped diamond crystals;
- and
- at least one of Ni, Co and Fe-base alloys.
A method for making an in-situ boron-doped polycrystalline diamond compact, comprising:
- integrally forming a layer of polycrystalline diamond by consolidating in a high-temperature, high-pressure in-situ boron-doped process a generally uniform mixture comprising:
- polycrystalline diamond material comprising boron-doped diamond crystals;
- and
- at least one of Ni, Co and Fe-base alloys.
A polycrystalline diamond compact, comprising:
- a layer of polycrystalline diamond integrally formed in a high-temperature, high-pressure process, the layer comprising a generally uniform mixture comprising:
- polycrystalline diamond material comprising diamond crystals;
- and
- a boron-containing alloy comprising at least one of Ni, Co and Fe-base alloys.
Dependencies are inferred from the claim text.