Patent ID: 7647993

Claim:
A thermally stable diamond bonded compact comprising: a diamond bonded body comprising; a thermally stable region extending a distance below a diamond bonded body surface, the thermally stable region having a material microstructure comprising a plurality of diamond grains and a reaction product between the diamond grains and a reactant interposed between and bonding together the diamond grains, wherein the thermally stable region has a material microstructure comprising primarily diamond crystals that are bonded together by the reaction product and to a lesser extent diamond-diamond bonded crystals; a polycrystalline diamond region extending a depth from the thermally stable region and having a material microstructure comprising intercrystalline bonded together diamond grains and a metal solvent catalyst disposed within interstitial regions between the intercrystalline bonded together diamond grains; and a metallic substrate attached to the polycrystalline diamond region.