Effect of TiO_2 Content on the Properties of Ceria-Stabilized Zirconia Cubic Ceramics

In this paper,ceria-stabilized zirconia cubic ceramics with high hardness were fabricated by pressureless sintering processing.The microstructure,XRD,Vickers hardness and relative density of the ceramics were investigated.Effects of TiO2 content(in mole) on relative density and Vickers hardness of Zr0.8Ce0.2O2 ceramics were also studied.The results show that TiO2 can effectively inhibit excessive grain growth,eliminate residual pores and promote sintering.The highest Vickers hardness is 20.2 GPa.The maximum relative density reaches up to 99.8%.