Polycrystalline diamond compact including a pre-sintered polycrystalline diamond table including a nonmetallic catalyst that limits infiltration of a metallic-catalyst infiltrant therein and applications therefor
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United States of America Patent
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Aug 11, 2015
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N/A
app pub date -
Jul 1, 2009
filing date -
Aug 24, 2005
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Abstract
Embodiments of the invention relate to thermally-stable polycrystalline diamond compacts (“PDCs”), and methods of fabricating such PDCs. In an embodiment, 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 a plurality of interstitial regions. The pre-sintered PCD table further including a first region remote from the substrate including a nonmetallic catalyst and a metallic catalyst each of which is disposed interstitially between the bonded diamond grains thereof, and a second region bonded to the substrate including a metallic-catalyst infiltrant disposed interstitially between the bonded diamond grains thereof. A nonplanar boundary is located between the first region and the second region.
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