Toughness optimized insert for rock and hammer bits

Details Toughness optimized insert for rock and hammer bits Toughness optimized insert for rock and hammer bits

E - Fixed Constructions

21

B

E21B 10/46 (2006.01) C04B 35/111 (2006.01) C04B 35/486 (2006.01) C04B 35/56 (2006.01) C04B 35/58 (2006.01) C04B 35/645 (2006.01) E21B 10/56 (2006.01)

Patent

CA 2348049

An insert for a drill bit is disclosed which includes an exposed surface having a contact portion adapted to periodically contact earthen formation. The contact portion includes a polycrystalline diamond material having a hardness in the range of about 2000 HV to about 3000 HV. In some embodiments, the polycrystalline diamond material includes a composite having a first phase material including polycrystalline diamond and a second phase material selected from the group of oxide particulates metal carbides, and metallic particulates, nitrides, and mixtures of thereof.

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