Patent ID: 8986406
Filing Date: 2015-03-24
Classification: B22F,C22C

Abstract:
1. A polycrystalline diamond (PCD) compact with diamond grains, the PCD compact comprising: a first zone of the diamond grains forming a working surface of the PCD compact; a first catalyzing material disposed within voids of the diamond grains in the first zone; a second zone of the diamond grains; and a second catalyzing material disposed within the second zone, wherein the second catalyzing material is bonded to the diamond grains disposed within the second zone, wherein a majority of the first catalyzing material in the first zone is not bonded to the diamond grains disposed within the first zone, wherein the first catalyzing material comprises at least one percent of a total material weight of the first zone, and wherein the first catalyzing material and the second catalyzing material consist of the same material.