LASER-LEACHED POLYCRYSTALLINE DIAMOND AND LASER-LEACHING METHODS AND DEVICES

摘要

The present disclosure relates to methods of laser-leaching polycrystalline diamond (PCD), devices for performing such methods, and to laser-leached PCD and elements and drill bits containing laser-leached PCD.

主权项

1. A method of laser-leaching a catalyst from polycrystalline diamond (PCD) comprising:
raising the temperature of at least a portion of the PCD to be leached to at least a temperature at which the catalyst migrates out of the PCD by illuminating the portion of the PCD to be leached with a laser, wherein the catalyst melts and diffuses to a surface of the at least a portion of the PCD to be leached; and removing the catalyst from the surface by placing the surface in a liquid solution, wherein the catalyst leaves the surface and enters the liquid solution, resulting in laser-leached PCD.