Abrasive tool making process – material – or composition – With inorganic material
Reexamination Certificate
2008-11-14
2011-12-20
McDonough, James (Department: 1731)
Abrasive tool making process, material, or composition
With inorganic material
C051S293000, C051S309000
Reexamination Certificate
active
08080074
ABSTRACT:
Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) and methods of fabricating such PDCs. In an embodiment of a “two-step” manufactured PDC, a PDC includes a substrate and a pre-sintered polycrystalline diamond (“PCD”) table bonded to the substrate. The pre-sintered PCD table includes bonded diamond grains defining interstitial regions. At least a portion of the interstitial regions include at least one material disposed therein selected from a silicon-cobalt alloy, silicon carbide, cobalt carbide, or a mixed carbide of silicon and cobalt. The pre-sintered PCD table lacks an intermediate contaminant region therein that includes at least one type of fabrication by-product generated during the fabrication of the pre-sintered PCD table.
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McDonough James
US Synthetic Corporation
Workman Nydegger
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