Polycrystalline diamond materials, methods of fabricating same, and applications using same
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United States of America Patent
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Nov 15, 2011
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app pub date -
Apr 22, 2008
filing date -
Apr 22, 2008
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Abstract
Embodiments relate to methods of fabricating PCD materials by subjecting a mixture that exhibits a broad diamond particle size distribution to a HPHT process, PCD materials so-formed, and PDCs including a polycrystalline diamond table comprising such PCD materials. In an embodiment, a method includes subjecting a mixture to heat and pressure sufficient to form a PCD material. The mixture comprises a plurality of diamond particles exhibiting a diamond particle size distribution characterized, in part, by a parameter θ that is less than about 1.0, wherex is the average particle size of the diamond particle size distribution, and σ is the standard deviation of the diamond particle size distribution. In an embodiment, the diamond particle size distribution can be generally modeled by the following equation:is the smallest-sized diamond grain, and n is a distribution modulus.
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