Patent · US Active

Polycrystalline tables having polycrystalline microstructures and cutting elements including polycrystalline tables

US8475918B2 · kind B2 · utility

3Cited by

32References

24Claims

0Family size

Assignees

Baker Hughes Holdings LLC · US
Element Six Limited · IE

Inventors

Anthony A. DiGiovanni · Houston, US
Michael Lester Fish · Randburg, ZA

Key dates

Filing date	Oct 29, 2010
Grant date	Jul 2, 2013
Priority date	—
Expiry date	May 16, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/30
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Cutting elements comprise a substrate and an unleached polycrystalline table attached on an end of the substrate. The polycrystalline table comprises a plurality of continuously inter-bonded grains of a superhard material and a quantity of catalyst material disposed in interstitial spaces between grains of the plurality of continuously inter-bonded grains of a superhard material. A mean grain size of the plurality of continuously inter-bonded grains is at least substantially uniform throughout the polycrystalline table and the quantity of catalyst material varies across the polycrystalline table in a direction parallel to a central axis of the polycrystalline table.

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