Ceramic composites consist of zirconia toughened alumina (ZTA) with TiO2as additive was fabricated via solid state sintering route. Numerous studies have indicated that TiO2can be used as sintering additives for Al2O3and the ability of microstructural control introduce by TIO2. The Vickers hardness of the obtained ZTA-TiO2was evaluated as a function of different TiO2 addition. Each sample was dry mixed, uniaxially pressed and sintered at 1600 °C for 4 hours in pressureless condition. It is noticed that the presence of TiO2greatly influence the microstructure of Al2O3. Al2O3grains tend to increase in size with more addition of TiO2. Characteristics of Vickers hardness increases increases from 1516.13 HV (0 wt% TiO2) to 1615.8 HV (3 wt% TiO2). Addition of TiO2also increases the bulk density of ZTA-TiO2from 3.90 g/cm3(0 wt% TiO2) to 4.10 g/cm3(3 wt% TiO2).
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