Patent ID: 7033408
Filing Date: 2006-04-25
Classification: B01J,B24D,C22C,Y10T

Abstract:
1. 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 diamond particles, the diamond particles being present in the mixture in an amount such that the diamond content of the abrasive product is 10 to 18% inclusive by weight; and (2) subjecting the mixture to elevated temperature and pressure conditions at which the diamond is crystallographically stable and at which substantially no graphite is formed, in the presence of a bonding metal or alloy capable of bonding the mixture into a coherent, sintered product, to produce the abrasive product; wherein the bonding metal or alloy comprises a combination of 60–99.5% inclusive by volume of a first metal a) selected from the group consisting of transition metals and transition metal alloys, and 0.5–40% inclusive by volume of a second metal b) which is a stronger carbide former than the metal a); and the metal b) is selected from the group consisting of silicon, titanium, zirconium, molybdenum, niobium, tungsten, vanadium, hafnium, tantalum, chromium, manganese, boron, beryllium, cerium, thorium, ruthenium, and alloys thereof.