Diamond compacts

Patent 4985051 Issued on January 15, 1991. Estimated Expiration Date:

November 13, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3574580

Polycrystalline diamond body
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Issued on: 11/07/1978
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Inventor: Lee , et al.

Polycrystalline diamond body and process
Patent #: 4231195
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Inventor: Bovenkerk

Inventor

Ringwood, Alfred E.

Assignee

The Australian National University

Application

No. 436121 filed on 11/13/1989

US Classes:

51/309, Metal or metal oxide51/298, WITH SYNTHETIC RESIN51/308Clay, silica, or silicate

Examiners

Primary: Dixon, William R. Jr.
Assistant: Thompson, Willie J.

Attorney, Agent or Firm

Nixon & Vanderhye

International Class

B24D 003/02

Abstract

Diamond compact composed of 60-95 volume % diamond crystals plastically deformed into a closely packed, rigid structure with contacts between the diamond crystals over extended mating surfaces arising from the plastic deformation. The diamond crystals are bonded together by an interstitial bonding material composed of a refractory carbide, such as silicon carbide, or a bonding material composed of a metal such as rhenium and a refractory carbide formed by reaction of a metallic bonding agent, such as tungsten, with carbon.