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US 7,396,505 B2Granted
Use of CoCrMo to augment biocompatibility in polycrystalline diamond compacts
AssigneeDiamicron, Inc.
InventorsBill J. Pope, Richard H. Dixon, Jeffery K. Taylor, Clayton F. Gardinier, Troy Medford, Dean C. Blackburn, Michael A. Vail, Louis M. Pope, Kenneth M. Jensen
Life of this patent
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Abstract
CoCrMo can be used to enhance biocompatibility of a sintered polycrystalline diamond compact.
Claims9
A method for improving the biocompatibility of polycrystalline diamond compacts comprising:
- selecting a diamond feedstock comprising diamond particles,
- selecting a solvent-catalyst metal,
- said solvent-catalyst metal including CoCrMo alloy,
- said CoCrMo alloy including Ni,
- sintering said diamond into a sintered polycrystalline diamond compact in the presence of said solvent-catalyst metal such that said solvent-catalyst metal is present between the diamond particles in said compact;
- wherein said sintered polycrystalline diamond compact has enhanced biocompatibility compared to a sintered polycrystalline diamond compact that lacks use of Co and Ni as a solvent-catalyst metal.
3 more elements
A method for improving the biocompatibility of polycrystalline diamond compacts comprising:
- selecting a diamond feedstock comprising diamond particles,
- selecting a substrate that includes a solvent-catalyst metal,
- said solvent-catalyst metal including CoCrMo and Ni,
- sintering said diamond and said substrate into a sintered polycrystalline diamond compact, said compact comprising a diamond table formed on the surface of said substrate,
- said sintering causing a sweep of solvent-catalyst metal from said susbtrate to pass into said diamond feedstock, such that said diamond table comprises interstitial spaces between said diamond particles with solvent-catalyst metal therein, and such that said diamond table comprises both diamond to diamond and diamond to metal bonds;
- wherein said sintered polycrystalline diamond compact has enhanced biocompatibility compared to a sintered polycrystalline diamond compact that does not utilize CoCrMo as a solvent-catalyst metal.
3 more elements
Dependencies are inferred from the claim text.