Abstract: An abrasive body comprising a diamond compact bonded to a cemented carbide backing by means of a continuous zirconium layer, the thickness of which is less than 0.5 mm, the diamond compact being substantially free of graphite and having a bonding matrix selected from a metal of Group VIII of the Periodic Table or an alloy containing one or more such metals and at least 70 percent by volume of diamond particles, and the cemented carbide backing being selected from cemented tantalum carbide, cemented tungsten carbide and cemented titanium carbide and mixtures thereof.

Abstract: An abrasive compact comprising diamond or cubic boron nitride abrasive particles or a mixture thereof, present in an amount of at least 50 volume percent, bonded into a hard conglomerate, preferably by means of a bonding matrix, and having a metal layer bonded to at least one surface thereof, is characterized by the metal being a high temperature braze metal capable of wetting the abrasive compact, preferably titanium or a titanium alloy, and the compact being substantially free of deteriorated abrasive particles.