Patent ID: 8695733
Filing Date: 2014-04-15
Classification: B22F,E21B,Y10T

Abstract:
1. A polycrystalline diamond wear element comprising: a body comprising a plurality of bonded together diamond grains, and a binder phase dispersed among the diamond grains, wherein the amount of the binder phase at a first position in the body adjacent a surface of the body is about 5 to 20 percent by weight, and the amount of the binder phase at a second position in the body remote from the surface is about 15 to 40 percent by weight, wherein at least the first position of the diamond body is substantially free of added carbide; a polycrystalline diamond transition material joined to the body and comprising a binder phase and a carbide material, wherein the content of the binder phase in the transition material is less than that of the body second position; and a substrate attached to the transition material, wherein the substrate can be selected from the group of materials consisting of metals, ceramics, cermets, and combinations thereof, and wherein the transition material is interposed between the body and the substrate.