Patent ID: 8951317
Filing Date: 2015-02-10
Classification: B24D,C23C,C23F,E21B

Abstract:
1. A method of processing a polycrystalline diamond element, comprising: depositing a vaporized material over a selected portion of a polycrystalline diamond element to form a protective coating over the selected portion, the polycrystalline diamond element comprising a polycrystalline diamond table bonded to a cemented carbide substrate, the protective coating comprising a ceramic material: exposing at least a portion of the polycrystalline diamond element to a leaching solution such that the leaching solution contacts an exposed surface region of the polycrystalline diamond table and at least a portion of the protective coating; removing the polycrystalline diamond element from the leaching solution; wherein the protective coating is substantially impermeable with the leaching solution.