CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS

摘要

A cutting element for an earth-boring tool includes a substrate and a volume of superabrasive material disposed on a substrate. The volume of superabrasive material has an exposed outer surface with a non-planar geometry. The at least one cutting element is configured to be located and oriented on an earth-boring tool so as to remove subterranean earth formation material by compressing and fracturing or plastically deforming the formation material with at least a portion of the exposed outer surface of the volume of superabrasive material during use of the earth-boring tool in an earth-boring operation. The exposed outer surface of the volume of superabrasive material includes a first area having a first average surface finish roughness and a second area having a second average surface finish roughness greater than the first average surface finish roughness. Earth-boring tools carrying such cutting elements and methods of forming such earth-boring tools are also disclosed.

主权项

1. An earth-boring tool, comprising:
a body; at least one cutting element carried by the body, the at least one cutting element comprising:
a volume of superabrasive material disposed on a substrate, the volume of superabrasive material having an exposed outer surface, the exposed outer surface having a non-planar geometry, wherein the at least one cutting element is located and oriented on the tool body so as to remove subterranean earth formation material by compressing and fracturing or plastically deforming the formation material with at least a portion of the exposed outer surface of the volume of superabrasive material during use of the earth-boring tool in an earth-boring operation, the exposed outer surface of the volume of superabrasive material comprising a first area having a first average surface finish roughness less than 500 nanometers and a second area having a second average surface finish roughness greater than 500 nanometers.