C - Chemistry – Metallurgy – 30 – B
Patent
C - Chemistry, Metallurgy
30
B
C30B 29/04 (2006.01) C01B 31/06 (2006.01) C22C 26/00 (2006.01) C30B 28/00 (2006.01) C30B 33/06 (2006.01) E21B 10/46 (2006.01) E21B 10/56 (2006.01)
Patent
CA 2489187
Thermally-stable polycrystalline diamond materials of this invention comprise a first phase including a plurality of bonded together diamond crystals, and a second phase including a reaction product formed between a binder/catalyst material and a material reactive with the binder/catalyst material. The reaction product is disposed within interstitial regions of the polycrystalline diamond material that exists between the bonded diamond crystals. The first and second phases are formed during a single high pressure/high temperature process condition. The reaction product has a coefficient of thermal expansion that is relatively closer to that of the bonded together diamond crystals than that of the binder/catalyst material, thereby providing an improved degree of thermal stability to the polycrystalline diamond material.
Belnap John Daniel
Griffo Anthony
Kembaiyan Kumar T.
Middlemiss Stewart N.
Oldham Thomas W.
Oyen Wiggs Green & Mutala Llp
Smith International Inc.
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