C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/140, 57/15
C04B 37/00 (2006.01) B22F 7/06 (2006.01) B24D 3/00 (2006.01) B24D 11/00 (2006.01) B24D 18/00 (2006.01) E21B 10/46 (2006.01) E21B 10/52 (2006.01) E21B 10/54 (2006.01) E21B 10/56 (2006.01)
Patent
CA 2337930
PCD and PCBN composite constructions have an ordered structure of two or more material phases that are combined together in a packed or interwoven configuration. One of the material phases is formed from materials selected from the group consisting of: polycrystalline diamond, polycrystalline cubic boron nitride; carbides, borides, nitrides, and carbonitrides from groups IVA, VA, and VIA of the Periodic Table; and mixtures thereof. Another material phase is preferably formed from a material having a degree of ductility that is higher than that of the first material phase. Example second material phase materials include those selected from the group consisting of cermets, Co, Ni, Fe, W, Mo, Cu, Al, Nb, Ti, Ta, and mixtures thereof. Example composite constructions include those having: (1) a first material phase formed from WC-Co, and a second material phase formed from Co; (2) a first material phase is selected from the group consisting of polycrystalline diamond, polycrystalline cubic boron nitride, and mixtures thereof, and a second material phase being a cermet material; and (3) a first material phase formed from polycrystalline diamond and a second material phase formed from WC-Co. Alternatively, the material phases can be formed from the same materials, only in different proportions. Woven or packed composite constructions have surface structures formed from a number of the order material phases (made from the same, similar, or different materials) that are specifically engineered (in terms of geometry, arrangement, and materials) to provide optimized, rather than compromised, performance properties.
Oyen Wiggs Green & Mutala Llp
Smith International Inc.
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