E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/46 (2006.01) B22F 1/00 (2006.01) B22F 7/02 (2006.01) B22F 7/06 (2006.01) B32B 5/16 (2006.01) C22C 1/04 (2006.01) C22C 1/05 (2006.01) C22C 49/00 (2006.01) E21B 10/52 (2006.01) E21B 10/56 (2006.01)
Patent
CA 2390814
Composite constructions of this invention comprise a first structural phase formed from a hard material selected from the group consisting of cermet materials, polycrystalline diamond, polycrystalline cubic boron nitride, and mixtures thereof, and a second structural phase formed from a material that is relatively softer than that used to form the first structural phase. The material selected to form the second structural phase can be the same or different from that used to form the first structural phase. The second structural phase is positioned into contact with at least a portion of the first structural phase. The composite construction includes repeated structural units that each comprise an ordered microstructure of first and second structural phases. Composite constructions of this invention are prepared by first forming a green-state part into a desired shape having the structural material phases arranged to provide the desired ordered material microstructure, and then consolidating/sintering the part using by using consolidation techniques that are capable of retaining the desired oriented or order material microstructure.
Fang Zhigang
Griffo Anthony
White Alysia C.
Oyen Wiggs Green & Mutala Llp
Smith International Inc.
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