Polycrystalline diamond cutter with high thermal conductivity
AssigneeVarel International Ind., L.P.
InventorsAlfazazi Dourfaye, Michael R. Reese, William W. King
Life of this patent
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Abstract
A front face of a diamond table mounted to a substrate is processed to introduce a material which comingles with or semi-alloys with or partially displaces interstitial catalyst binder in a thermal channel to a desired depth. The material is selected to be less thermally expandable than the catalyst binder and/or more thermally conductive than the catalyst binder and/or having a lower heat capacity than the catalyst binder.
Claims34
A polycrystalline diamond compact (PDC) cutter, comprising:
- a substrate;
- and
- a diamond table mounted to the substrate, the diamond table comprising diamond crystals and interstitial catalyst binder, the diamond table further having a front face with a thermal channel formed to additionally include a material, the material being less thermally expandable than the catalyst binder and/or more thermally conductive than the catalyst binder and/or having a lower heat capacity than the catalyst binder, the material being commingled with or semi-alloyed with the catalyst binder in the thermal channel to a desired depth.
A method, comprising:
- introducing a material to a front face of a diamond table mounted to a substrate, the diamond table comprising diamond crystals and interstitial catalyst binder, the introduction of the material to the front face forming a thermal channel which additionally includes the material, the material being less thermally expandable than the catalyst binder and/or more thermally conductive than the catalyst binder and/or having a lower heat capacity than the catalyst binder, the introduced material being commingled with or semi-alloyed with the catalyst binder in the thermal channel to a desired depth.
A polycrystalline diamond compact (PDC) cutter, comprising:
- a substrate;
- and
- a diamond table mounted to the substrate, the diamond table comprising diamond crystals and interstitial catalyst binder, the diamond table further having a front face with a thermal channel formed to additionally include a material, the material being less thermally expandable than the catalyst binder and/or more thermally conductive than the catalyst binder and/or having a lower heat capacity than the catalyst binder, the material partially displacing the catalyst binder in the thermal channel to a desired depth, the displaced catalyst binder remaining in either the diamond table or the substrate.
A method, comprising:
- introducing a material to a front face of a diamond table mounted to a substrate, the diamond table comprising diamond crystals and interstitial catalyst binder, the introduction of the material to the front face forming a thermal channel which additionally includes the material, the material being less thermally expandable than the catalyst binder and/or more thermally conductive than the catalyst binder and/or having a lower heat capacity than the catalyst binder, the introduced material partially displacing the catalyst binder in the thermal channel to a desired depth, the displaced catalyst binder remaining in either the diamond table or the substrate.
Dependencies are inferred from the claim text.