| 摘要 |
PURPOSE:To improve hardness, thermal conductivity, high-temperature stability and wear resistance by finely and uniformly dispersing a specific metal carbonate into diamond. CONSTITUTION:A diamond powder layer having >=0.1 mm thickness and a carbonate layer of Mg, Ca, Sr or Ba or a compound carbonate layer of two or more of these carbonates, having >=0.05 mm thickness are laminated, arranged and sintered under 6-12 GPa pressure at 1,700-2,500 deg.C to give a diamond base sintered material comprising 0.1-15 vol.% dispersion phase of fine and uniform distribution consisting essentially of the (compound) carbonates and the rest of diamond constituting a ground. |
