Abrasive tool having film-covered CBN grits bonded by brazing to a substrate

摘要

The invention concerns in one aspect a CBN abrasive tool comprising a metal, ceramic or cemented carbide substrate and a single layer of CBN grits bonded to said substrate by a brazing alloy, characterized in that the surface chemistry of said CBN grits is modified by depositing thereon a film of silicon carbide. The invention also concerns, in another aspect, a method of manufacturing a CBN abrasive tool comprising the steps of providing a metal, ceramic or cemented carbide substrate; providing a plurality of CBN grits; depositing a film of silicon carbide on said CBN grits; and, bonding the carbide film- coated CBN grits to said substrate by a brazing alloy.