Polycrystalline diamond compact (PDC) cutting element having multiple catalytic elements
AssigneeUS Synthetic Corporation
InventorsKenneth E. Bertagnolli, Michael A. Vail
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Abstract
A polycrystalline diamond compact useful for wear, cutting, drilling, drawing and like applications is provided with a first diamond region remote from the working surface which has a metallic catalyzing material and a second diamond region adjacent to or including the working surface containing a non-metallic catalyst and the method of making such a compact is provided. This compact is particularly useful in high temperature operations, such as hard rock drilling because of the improved thermal stability at the working surface.
Claims23
A polycrystalline diamond compact, comprising:
- a volume of polycrystalline diamond material having a plurality of interstitial spaces, wherein a material comprising cobalt is disposed in at least some interstitial spaces and wherein a material comprising boron is disposed in at least some other interstitial spaces.
A process for making a polycrystalline diamond compact, comprising:
- sintering a volume of polycrystalline diamond material;
- disposing a material comprising cobalt in at least some interstitial spaces defined within the volume of polycrystalline diamond material;
- and
- disposing a material comprising boron in at least some other interstitial spaces defined within the volume of polycrystalline diamond material.
A drill bit, comprising:
- a shank;
- and
- a bit body attached to the shank;
- at least one polycrystalline diamond compact attached to the body, wherein the at least one polycrystalline body comprises:
- a substrate;
- and
- a volume of polycrystalline diamond material having a plurality of interstitial spaces, wherein a material comprising cobalt is disposed in at least some interstitial spaces and wherein a material comprising boron is disposed in at least some other interstitial spaces.
Dependencies are inferred from the claim text.