Patent ID: 6919040

Claim:
A method of producing an abrasive product comprising the steps of: (1) providing a mixture including a mass of discrete carbide particles and a mass of cubic boron nitride particles, the cubic boron nitride particles being present in the mixture in an amount such that the cubic boron nitride content of the abrasive product is 25% or less by weight; and (2) subjecting the mixture to elevated temperature and pressure conditions at which the cubic boron nitride is crystallographically stable and at which substantially no hexagonal boron nitride is formed, in the presence of a bonding metal or alloy capable of bonding the mixture into a coherent, sintered product, wherein the bonding metal or alloy comprises a combination of: (a) a transition metal or a transition metal alloy; and (b) from greater than 0% up to 40% by volume of the bonding metal or alloy of a second metal which is not a carbide and is a stronger nitride or boride former than the transition metal or the transition metal alloy, or an alloy of the second metal; to produce the abrasive product.