The Effect of Mullite Addition on Wear Properties of SiO2 Doped ZrO2 Ceramics

Mullite (3Al2O3.2SiO2) and 10 mol% silica added zirconia (10 SiO2 - 90 ZrO2) ceramic powders were synthesized by conventional processing route. The mixtures prepared mechanical alloying method using ball mill in acetone environment. To synthesize mullite, Al2O3 mixture was with stoichiometric proportions fired it the air at 1600 oC for 3 h. And composites 1300 2 Thus, mullite composite phases obtained milling sieving processes carried out. Then, mullite-free 10% weight reinforced silicon oxide powder metallurgy method. compacted uniaxial pressing. formed samples sintered a high temperature furnace conditions 1 5 h 1500 sintering temperatures. Finally, microstructure examinations of SEM, phase analysis XRD, hardness, three-point bending wear tests performed. In addition, results water absorption, porosity density from physical properties effect additive on especially this investigated.