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US 12,544,878 B2Granted
Leached superabrasive elements, subterranian tools with leached superabrasive elements, and related systems and methods
AssigneeUS Synthetic Corporation
InventorsDaren Nathaniel Heaton, Jeremy Brett Lynn, Mark Pehrson Chapman, Oakley D. Bond
Life of this patent
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Abstract
Superabrasive elements may be produced by methods including leaching the metallic material from the superabrasive element to produce a leached volume by exposing at least a portion of the superabrasive element to a processing solution, exposing an electrode to the processing solution, and applying a charge to the electrode such that a voltage is generated between the superabrasive element and the electrode and the voltage is applied to the processing solution.
Claims16
A superabrasive element produced by a process comprising:
- providing a superabrasive element comprising a polycrystalline diamond table that comprises a metallic material disposed in interstitial spaces defined within the polycrystalline diamond table, the polycrystalline diamond table comprising:
- a superabrasive face;
- and
- a superabrasive side surface extending around an outer periphery of the superabrasive face;
- wherein at least a portion of the superabrasive element includes a protective covering bonded to the superabrasive element, and wherein the protective covering is bonded to a portion of the superabrasive side surface of the polycrystalline diamond table;
- leaching the metallic material from at least a volume of the polycrystalline diamond table to produce a leached volume in a peripheral region of the polycrystalline diamond table that is leached to a greater depth than a central region of the polycrystalline diamond table by:
- exposing at least a portion of the polycrystalline diamond table to a processing solution;
- exposing an electrode to the processing solution;
- applying a charge to the electrode such that a voltage is generated between the polycrystalline diamond table and the electrode and the voltage is applied to the processing solution;
- leaching a portion of the polycrystalline diamond table;
- preventing leaching of the portion of the superabrasive side surface of the superabrasive element with the protective covering bonded thereto;
- and
- removing the protective covering from the superabrasive element.
10 more elements
A superabrasive element produced by a process comprising:
- providing a superabrasive element comprising a polycrystalline diamond table that comprises a metallic material disposed in interstitial spaces defined within the polycrystalline diamond table, the polycrystalline diamond table comprising:
- a superabrasive face;
- and
- a superabrasive side surface extending around an outer periphery of the superabrasive face;
- wherein at least a portion of the superabrasive element includes a protective covering;
- leaching the metallic material from at least a volume of the polycrystalline diamond table to produce a leached volume in a peripheral region of the polycrystalline diamond table that is leached to a greater depth than a central region of the polycrystalline diamond table by:
- exposing at least a portion of the polycrystalline diamond table to a processing solution;
- exposing an electrode to the processing solution;
- applying a charge to the electrode such that a voltage is generated between the polycrystalline diamond table and the electrode and the voltage is applied to the processing solution;
- leaching at least a portion of the superabrasive face of the polycrystalline diamond table and only a portion of the superabrasive side surface;
- and
- removing the protective covering from the superabrasive element.
9 more elements
A superabrasive element produced by a process comprising:
- providing a superabrasive element comprising a polycrystalline diamond table that comprises a metallic material disposed in interstitial spaces defined within the polycrystalline diamond table, the polycrystalline diamond table comprising:
- a superabrasive face;
- and
- a superabrasive side surface extending around an outer periphery of the superabrasive face;
- wherein at least a portion of the superabrasive element includes a protective covering bonded to a portion of the superabrasive side surface of the polycrystalline diamond table;
- leaching the metallic material from at least a volume of the polycrystalline diamond table to produce a leached volume in a peripheral region of the polycrystalline diamond table that is leached to a greater depth than a central region of the polycrystalline diamond table by:
- exposing at least a portion of the polycrystalline diamond table to a processing solution;
- exposing an electrode to the processing solution;
- applying a charge to the electrode such that a voltage is generated between the polycrystalline diamond table and the electrode and the voltage is applied to the processing solution;
- leaching a portion of the polycrystalline diamond table including another portion of the superabrasive side surface;
- and
- removing the protective covering from the superabrasive element.
9 more elements
Dependencies are inferred from the claim text.