INTEGRAL COMPOSITE OF POLYCRYSTALLINE DIAMOND AND/OR CUBIC BORON NITRIDE BODY PHASE AND SUBSTRATE PHASE

摘要

A self-supporting composite comprised of a mass of diamond and/or cubic boron nitride crystals coated with elemental non-diamond carbon in contact with a substrate is infiltrated by fluid silicon producing a like-shaped composite of a polycrystalline body phase integrally bonded to a substrate supporting phase. The composite is useful as an abrasive, cutting tool, nozzle or other wear-resistant part.