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POLYCRYSTALLINE DIAMOND COMPACT INCLUDING A CEMENTED TUNGSTEN CARBIDE SUBSTRATE THAT IS SUBSTANTIALLY FREE OF TUNGSTEN CARBIDE GRAINS EXHIBITING ABNORMAL GRAIN GROWTH AND APPLICATIONS THEREFOR
POLYCRYSTALLINE DIAMOND COMPACT INCLUDING A CEMENTED TUNGSTEN CARBIDE SUBSTRATE THAT IS SUBSTANTIALLY FREE OF TUNGSTEN CARBIDE GRAINS EXHIBITING ABNORMAL GRAIN GROWTH AND APPLICATIONS THEREFOR
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机译：多晶金刚石复合材料，其中包括基本上不含异常晶粒长大的碳化钨晶粒的硬质合金碳化钨及其应用
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摘要
Embodiments relate to polycrystalline diamond compacts ("PDCs") including a polycrystalline diamond ("PCD") table that is substantially free of defects formed due to abnormal grain growth of tungsten carbide grains, and methods of fabricating such PDCs. In an embodiment, a PDC comprises a cemented tungsten carbide substrate including an interfacial surface that is substantially free of tungsten carbide grains exhibiting abnormal grain growth, and a PCD table bonded to the interfacial surface of the cemented tungsten carbide substrate. The PCD table includes a plurality of bonded diamond grains defining a plurality of interstitial regions. At least a portion of the interstitial regions includes a metal-solvent catalyst disposed therein. The PCD table may be substantially free of chromium or the PCD table and the cemented tungsten carbide substrate may each include chromium.
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