PREPARATION METHOD OF CALCINED BODY MADE BY AL2O3-TICX

摘要

The cutting tool is produced by mixing 20-80 wt.% Al2O3, 10-30 wt.% TiC, 1-30 wt.% TiO2 and 1-10 wt.% WC, adding 0.1-5 wt.% Y2O3 and MgO respectively as a sintering agent, readding 0.1-5 wt.% ZnO2 and Mo2C respectively to prevent from obtaining a secondary phase, sintering at 1600-1700 deg.C under Ar gas atmosphere, pressing to densify Al2O3-TiCx (where x is 0.7-0.9) with HIP (hot isostatic pressing) method. The produced cutting tool has a good toughness, mechanical strength, abrasion-resistance and heat impact resistance.