HIGH DENSITY POLYCRYSTALLINE SUPERHARD MATERIAL
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United States of America Patent
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Dec 19, 2013
app pub date -
Dec 20, 2011
filing date -
Dec 29, 2010
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Abstract
A polycrystalline superhard material comprises a mass of diamond, graphite or cubic boron nitride particles or grains bonded together by ultrathin inter-granular bonding layers, the inter-granular bonding layers having an average thickness of greater than about 0.3 nm and less than about 100 nm. There is also disclosed a method for making such a polycrystalline superhard material.
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