SUPERHARD CONSTRUCTIONS & METHODS OF MAKING SAME

摘要

A superhard construction comprises a substrate comprising a peripheral surface, an interface surface and a longitudinal axis and a super hard material layer formed over the substrate and having an exposed outer surface forming a working surface,a peripheral surface extending therefrom and an interface surface. One of the interface surface of the substrate or the interface surface of the super hard material layer comprises one or more projections arranged to project from the interface surface, the height of the one or more projections being between around 0.2mm to around 1.0mm measured from the lowest point on the interface surface from which the one or more projections extend.