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Ceramic composite made up of zirconia-toughened alumina (ZTA) with TiO₂ as additive was constructed via a solid-state sintering route. The Vickers hardness of the obtained ZTA–TiO₂ was evaluated at various levels of the TiO₂ addition. Every sample was dry mixed, uniaxially pressed and sintered at 1600 °C for 1 h in a pressureless condition. The presence of TiO₂ was observed to have greatly influenced the microstructure of the Al₂O₃. Grain growth of the Al₂O₃ particles was hindered with the addition of 3 wt% TiO₂, but increased in size at an excess of 3 wt% TiO₂. According to the results, tialite (Al₂TiO₅) begun appearing at a composition of ZTA–5 wt% TiO₂ and this increased with the TiO₂ content. The fracture toughness and hardness were enhanced from 5.93 MPa √m (0 wt% TiO₂) to 6.56 MPa √m (3.0 wt% TiO₂) and from 1516.13 HV (0 wt% TiO₂) to 1615.8 HV (3.0 wt% TiO₂), respectively. The improved …