Patent · US Active

Polycrystalline superhard material

US9120204B2 · kind B2 · utility

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4References

8Claims

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Assignee

ELEMENT SIX ABRASIVES S.A. · LU

Inventor

Robert Fries · Rosebank, ZA

Key dates

Filing date	Apr 20, 2011
Grant date	Sep 1, 2015
Priority date	—
Expiry date	Oct 28, 2031

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B10/567
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.