Patent ID: 8851208
Filing Date: 2014-10-07
Classification: B22F,B24D,E21B

Abstract:
1. A cutting element for an earth-boring drill bit, comprising: a thermally stable cutting table comprising a polycrystalline diamond material, the polycrystalline diamond material consisting 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 being at least substantially free of Group VIII metal or alloy catalyst material; a substrate; and an adhesion material between and bonded to the cutting table and the substrate, wherein the adhesion material comprises a polycrystalline diamond material bonded to the cutting table and the substrate, the adhesion material being formed separately from formation of the preformed cutting table.