POLYCRYSTALLINE DIAMOND COMPOSITE COMPACT
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United States of America Patent
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app pub date -
Sep 2, 2010
filing date -
Sep 11, 2009
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Abstract
A polycrystalline diamond (PCD) composite compact element comprising a PCD structure bonded to a cemented carbide substrate, in which at least a peripheral region of the substrate comprises cemented carbide material having a mean free path (MFP) characteristic of at least about 0.1 microns and at most about 0.7 microns; and an elastic limit of at least about 1.9 GPa.
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