Polycrystalline diamond
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United States of America Patent
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Jun 30, 2015
Grant Date -
Nov 24, 2011
app pub date -
May 18, 2011
filing date -
May 18, 2010
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Abstract
A method for making a polycrystalline diamond (PCD) construction comprises providing a cemented carbide substrate comprising carbide grains cemented together by a cement material, subjecting the substrate to a first pressure treatment, treating the substrate to remove at least some of the cement material from at least a region of the substrate adjacent a boundary defined by the substrate, and subjecting the substrate to a second pressure treatment, in contact with or bonded at the boundary to a diamondiferous structure.
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