Diamond-bonded bodies and compacts with improved thermal stability and mechanical strength
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United States of America Patent
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Jan 13, 2015
Grant Date -
Sep 23, 2010
app pub date -
Jun 1, 2010
filing date -
Oct 12, 2005
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Abstract
Thermally stable diamond-bonded compacts include a diamond-bonded body having a thermally stable region extending a distance below a diamond-bonded body surface. The thermally stable region comprises a matrix first phase of bonded together diamond crystals, and a second phase interposed within the matrix phase. At least some population of the second phase comprises a reaction product formed between an infiltrant material and the diamond crystals at high pressure/high temperature conditions. The diamond bonded body further includes a polycrystalline diamond region that extends a depth from the thermally stable region and has a microstructure comprising a polycrystalline diamond matrix phase and a catalyst material disposed within interstitial regions of the matrix phase. The compact includes a substrate attached to the diamond-bonded body.
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