Preparation of nanocrystalline diamond coated diamond particles and applications thereof
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United States of America Patent
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Nov 24, 2015
Grant Date -
Jul 18, 2013
app pub date -
Jan 16, 2013
filing date -
Jan 16, 2012
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Abstract
A method of making a polycrystalline diamond cutter element includes forming a blend, comprising a first particle size of polycrystalline diamond particles and a second particle size of polycrystalline diamond particles; forming a suspension of nanocrystalline diamond particles suspended in a solvent; and mixing the blend into the suspension to form a polycrystalline diamond mixture comprising nanocrystalline diamond coated polycrystalline diamond particles. The mixture is sintered with a substrate at high temperature and high pressure to form the polycrystalline diamond cutter element.
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