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US 5,662,720 AGranted
Composite polycrystalline diamond compact
AssigneeGeneral Electric Company
InventorEoin M. O'Tighearnaigh
Life of this patent
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Abstract
A cutting element comprises a diamond layer and a metal carbide substrate. The diamond layer and the metal carbide substrate form an egg-carton shaped interface.
Claims8
A cutting element, comprising:
- a polycrystalline material layer;
- and
- a substrate comprising metal carbide;
- wherein said polycrystalline material layer and said substrate form interface, said interface comprises a plurality of alternating arc-shaped concaves and convexes.
1 more element
A method for making a cutting element, comprising the steps of:
- (1) forming a substrate of metal carbide having a mounting surface;
- (2) forming a plurality of alternating arc-shaped concaves and convexes on the mounting surface of the substrate;
- (3) covering the mounting surface of the substrate with a layer of diamond grains such that the grains form a solid layer above the substrate;
- and
- (4) applying heat and pressure to the substrate and diamond grains to cause the diamond grains to adhere to each other and to the substrate.
2 more elements
Dependencies are inferred from the claim text.