| 摘要 |
PURPOSE:To provide a sintered composite compact having strength and toughness improved without loss in high hardness and heat resistance by adding magnesium oxide to a tungsten carbidealumina composite material for improving its characteristics. CONSTITUTION:A composite material comprising 10 to 90vol.% of Al2O3 and the rest of WC is mixed with MgO in an amount of 0.5 to 2.0 outer % to produce WC-Al2O3 sintered composite compact having a density higher than 95% of the theoretical density. |
