SUPPORTED DIAMOND

Compacts are provided in which one or more single crystal diamonds, having a largest dimension of at least one millimeter, are embedded in the polycrystalline matrix which may be made of diamond ; cubic boron nitride (CBN): and silicon and silicon carbide bonded diamond, CBN, or mixtures of diamond...

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Bibliographische Detailangaben
Hauptverfasser:	ROBERT CHARLES DEVRIES, HAROLD PAUL BOVENKERK
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY COMBINED OPERATIONS MACHINE TOOLS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PUNCHING METAL THEIR RELEVANT APPARATUS TRANSPORTING UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	Compacts are provided in which one or more single crystal diamonds, having a largest dimension of at least one millimeter, are embedded in the polycrystalline matrix which may be made of diamond ; cubic boron nitride (CBN): and silicon and silicon carbide bonded diamond, CBN, or mixtures of diamond and CBN. The single crystal diamond is from 10-90 volume percent of the compact. The compacts (except for the silicon and silicon carbide variety) are made by high pressure-high temperature processing generally in the range of 50Kbar at 1300 DEG C to 85 Kbar at 1750 DEG C. They have application in several fields, for example, wire drawing die blanks, cutting tool blanks, and anvils for high pressure apparatus.