Composite polycrystalline compact with improved fracture and delamination resistance
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United States of America Patent
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Oct 15, 1996
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N/A
app pub date -
May 15, 1995
filing date -
May 15, 1995
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Abstract
A polycrystalline compact cutting element for use in operations that require high impact and abrasion resistance. The compact includes a substrate formed of tungsten carbide or other hard material with a diamond or cubic boron nitride layer bonded to a mounting surface on the substrate. The interface between the layers is defined by a three-dimensional topography formed with a plurality of surface irregularities in an arrangement whereby a straight line or a constant radii accurate line does not connect a series of adjacent surface irregularities.
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