Patent ID: 9061264
Filing Date: 2015-06-23
Classification: B01J

Abstract:
1. A cutting element comprising: a bonded diamond layer attached to a substrate at an interface, wherein the diamond layer is formed of PPDA in the form of bonded polycrystalline diamond agglomerates, each PPDA formed of bonded individual diamond crystals; and the diamond layer having two distinctly different subsets of interconnecting pores between the diamond crystals in each PPDA and between the PPDA, both of which are continuous throughout the diamond layer, one subset of the two subsets of interconnected pores having more pathways of a smaller size than the least number and largest size of pores in the other subset of interconnected pores; and wherein the agglomerate size of the PPDA is larger than 100 microns and the grain size of the individual diamond crystals of the PPDA is smaller than 30 microns.