Thermally stable pointed diamond with increased impact resistance
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United States of America Patent
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Jul 10, 2012
Grant Date -
May 28, 2009
app pub date -
Feb 6, 2009
filing date -
Aug 11, 2006
priority date (Note) -
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Abstract
An insert comprises a sintered polycrystalline diamond body bonded to a cemented metal carbide substrate. The diamond body comprises a substantially conical shape with conical side wall terminating at an apex. The diamond body comprises a first region with a metallic catalyst dispersed through interstices between the diamond grains and a second region proximate the apex with the characteristic of higher thermal stability than the first region.
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