Methods of fabricating cutting elements including adhesion materials for earth-boring tools
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United States of America Patent
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Dec 12, 2017
Grant Date -
Mar 19, 2015
app pub date -
Sep 10, 2014
filing date -
Mar 31, 2009
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Abstract
A cutting element for an earth-boring drill bit may include a thermally stable cutting table comprising a polycrystalline diamond material. The polycrystalline diamond material may consist essentially of a matrix of diamond particles bonded to one another and a silicon, silicon carbide, or silicon and silicon carbide material located within interstitial spaces among interbonded diamond particles of the matrix of diamond particles. The cutting table may be at least substantially free of Group VIII metal or alloy catalyst material. The cutting element may further include a substrate and an adhesion material between and bonded to the cutting table and the substrate. The adhesion material may include diamond particles bonded to one another and to the cutting table and the substrate after formation of the preformed cutting table.
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