Patent ID: 9297213
Filing Date: 2016-03-29
CPC Classification: B22F,B24D,C04B,C22C,C23F,E21B

Claim Text:
1. A polycrystalline diamond (PCD) element having internal diamond surfaces, the internal diamond surfaces defining interstices between them; the PCD element comprising a masked or passivated region and an unmasked or unpassivated region, the masked or passivated region extending a depth into the PCD element from a working surface of at least 100 microns, the unmasked or unpassivated region defining a boundary with another region or body, and extending a depth of between 5 microns and 600 microns from the boundary, in which at least some of the internal diamond surfaces of the masked or passivated region contact a mask or passivation medium, and wherein some or all of the interstices of the masked or passivated region and of the unmasked or unpassivated region are at least partially filled with an infiltrant material.