Abstract: The effect of the properties of abrasive particles in slurry, including the morphology and hardness, on the wear resistance of alumina-reinforced yttria-stabilized zirconia polycrystals (3Y-TZP/10wt;Al2O3, 10ADZ) was investigated in 5;NaOH slurry containing different abrasive particles using a pin-on-plate tribometer. The results showed that the wear resistance of ADZ ceramic depends on the properties of the abrasive particles. As expected, the wear resistance is increased with hardness of abrasive particles decreasing, but it is also influenced by the other, more subtle differences in the morphology, that is, the sharper the abrasive particle the higher wear rate. The main wear mechanism of ADZ in SiO2 particle slurry is plastic deformation and microploughing, but the removal of material is controlled by brittle fracture in the Al2O3 slurry.

Key words: The effect of the properties of abrasive particles in slurry, including the morphology and hardness, on the wear resistance of alumina-reinforced yttria-stabilized zirconia polycrystals (3Y-TZP/10wt;Al2O3, 10ADZ) was investigated in 5;NaOH slurry containing different abrasive particles using a pin-on-plate tribometer. The results showed that the wear resistance of ADZ ceramic depends on the properties of the abrasive particles. As expected, the wear resistance is increased with hardness of abrasive particles decreasing, but it is also influenced by the other, more subtle differences in the morphology, that is, the sharper the abrasive particle the higher wear rate. The main wear mechanism of ADZ in SiO2 particle slurry is plastic deformation and microploughing, but the removal of material is controlled by brittle fracture in the Al2O3 slurry.