| 摘要 |
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. |
