×

CUTTING ELEMENTS HAVING NON-PLANAR CUTTING FACES WITH SELECTIVELY LEACHED REGIONS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS

  • US 20150259986A1
  • Filed: 03/17/2014
  • Published: 09/17/2015
  • Est. Priority Date: 03/17/2014
  • Status: Active Grant
First Claim
Patent Images

1. A cutting element, comprising:

  • a substrate; and

    a volume of polycrystalline diamond material affixed to the substrate at an interface, the volume of polycrystalline diamond material comprising;

    a front cutting face with at least one substantially planar portion and at least one recess, the at least one recess extending from a plane defined by the at least one substantially planar portion a first depth into the volume of polycrystalline diamond material in an axial direction parallel to a central axis of the cutting element;

    a region including a catalyst material disposed in interstitial spaces between diamond grains of the volume of polycrystalline diamond material, the region including the catalyst material extending through the volume of polycrystalline diamond material from the interface to an exposed surface of the volume of polycrystalline diamond material within the at least one recess of the front cutting face; and

    at least one region substantially free of the catalyst material, wherein the at least one region substantially free of the catalyst material extends from the at least one substantially planar portion of the front cutting face a second depth into the volume of polycrystalline diamond material in the axial direction.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×