Cutting structures

Details Cutting structures Cutting structures

2005-01-27

2008-10-14

Turner, Archene (Department: 1794)

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

C051S307000, C051S309000, C428S212000, C428S698000, C428S704000

Reexamination Certificate

active

07435478

ABSTRACT:
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.

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