Abrasive bodies

摘要

There is provided an abrasive body comprising a composite abrasive compact bonded to a metal containing substrate, typically made of cemented carbide, through a bonding layer comprising nickel, copper, cobalt, iron or an alloy containing one or more of these metals. The abrasive body has particular application as a cutting element for a drill crown. The abrasive body is made by bonding the composite abrasive compact to the substrate using solid state diffusion bonding techniques.