E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/46 (2006.01) B23P 5/00 (2006.01) E21B 10/54 (2006.01)
Patent
CA 2532773
A polycrystalline diamond compact cutter that includes a thermally stable polycrystalline diamond layer, a carbide substrate, and a polycrystalline cubic boron nitride layer interposed between the thermally stable polycrystalline diamond layer and the carbide substrate is disclosed. A method of forming a polycrystalline diamond compact cutter that includes the steps of providing a carbide substrate, disposing a polycrystalline cubic boron nitride layer on the carbide substrate, disposing a polycrystalline diamond layer on the polycrystalline cubic boron nitride layer, and treating at least a portion of the polycrystalline diamond layer to form a thermally stable polycrystalline diamond layer is also disclosed.
On décrit un outil de coupe compact de diamant polycristallin, qui comprend une couche de diamant polycristallin thermiquement stable, un substrat de carbure et une couche de nitrure de bore cubique polycristallin interposée entre la couche de diamant polycristallin thermiquement stable et le substrat de carbure. On présente également une méthode de fabrication d'un outil de coupe compact de diamant polycristallin qui comprend les étapes consistant à fournir un substrat de carbure, à disposer une couche de nitrure de bore cubique polycristallin sur le substrat de carbure, à disposer une couche de diamant polycristallin sur la couche de nitrure de bore cubique polycristallin et à traiter au moins une partie de la couche de diamant polycristallin pour former une couche de diamant polycristallin thermiquement stable.
Kirby Eades Gale Baker
Smith International Inc.
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