Polycrystalline superhard material
AssigneeElement Six Abrasives S.A.
InventorRobert Fries
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Abstract
A polycrystalline superhard material comprises a sintered mass of superhard grains having a mean superhard grain contiguity of at least 62 percent and at most 92 percent. There is also disclosed a method of making such a polycrystalline superhard material. The method comprises providing a precursor body comprising superhard grains and interstices between the superhard grains, and introducing additive particles into the interstices to form a pre-sinter body. The pre-sinter body is submitted to a temperature and pressure at which superhard material is thermodynamically stable, sintering it and forming polycrystalline superhard material.
Claims20
A method for making polycrystalline superhard material comprising introducing, to a precursor body comprising superhard grains and interstices between the superhard grains, additive particles into the interstices to form a pre-sinter body;
- and subjecting the pre-sinter body to a temperature and pressure at which superhard material is thermodynamically stable, sintering it and forming polycrystalline superhard material.
A polycrystalline superhard material comprising a sintered mass of superhard grains having a mean superhard grain contiguity of at least 62 percent and at most 92 percent.
Dependencies are inferred from the claim text.