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US 9,068,410 B2Granted
Dense diamond body
AssigneeSchlumberger Technology Corporation
InventorsDavid R. Hall, H. Tracy Hall, Jr.
Life of this patent
Estimating the term…
Abstract
A method of making a dense diamond body comprises the steps of: forming a sintered polycrystalline diamond body with the use of a catalyst; forming voids in the body by removing at least some of the catalyst; and reducing the overall volume of voids by applying pressure and temperature to the body in a vessel substantially free of additional catalysts.
Claims20
A method of making a dense diamond body, comprising:
- forming a sintered polycrystalline diamond body with the use of a catalyst;
- forming voids having a volume in the sintered polycrystalline diamond body by removing at least some of the catalyst;
- and
- reducing the volume of voids by applying a pressure and a temperature to the sintered polycrystalline diamond body in a vessel substantially free of additional catalysts and substantially free of a carbide substrate to make the dense diamond body.
1 more element
A method of making a dense diamond body, comprising:
- forming a sintered polycrystalline diamond body with the use of a catalyst;
- forming voids having a volume in the sintered polycrystalline diamond body by removing at least some of the catalyst;
- applying a first pressure and a temperature to the sintered polycrystalline diamond body in a vessel to reduce the volume of voids and form the dense diamond body;
- and
- after reducing the volume of voids, attaching the dense diamond body to a substrate by applying a second pressure and temperature to the dense diamond body and the substrate;
- wherein the dense diamond body is not attached to another body during the applying the first pressure and temperature.
3 more elements
A method of making a dense diamond body, comprising:
- forming a sintered polycrystalline diamond body with the use of a catalyst;
- forming voids having a volume in the sintered polycrystalline diamond body by removing at least some of the catalyst;
- applying a pressure and a temperature to the sintered polycrystalline diamond body in a vessel to reduce the volume of voids and form the dense diamond body;
- and
- bonding the dense diamond body to a polycrystalline diamond layer incorporating a catalyst therein;
- wherein the dense diamond body is not attached to another body during the applying the pressure and temperature.
3 more elements
A method of making a dense diamond body, comprising:
- forming a sintered polycrystalline diamond body with the use of a catalyst;
- forming voids having a volume in the sintered polycrystalline diamond body by removing at least some of the catalyst;
- and
- reducing the volume of voids by precompacting the sintered polycrystalline diamond body by increasing the pressure alone without an increase in temperature followed by application of both pressure and temperature to form the dense diamond body.
1 more element
Dependencies are inferred from the claim text.