Structural and Microstructure Relationship with Fracture Toughness of CeO2 Addition into Zirconia Toughened Alumina (ZTA) Ceramic Composites

Abstract

The effect of CeO2addition in zirconia toughened alumina (ZTA) was examined. The CeO2addition in weight percent (wt %) was varied from 0 wt% to 15 wt%. The fabricated samples were sintered at a temperature of 1600°C. The sintered samples were characterized their properties such as fracture toughness and phase determination. X-ray diffraction patterns confirm the constituent phases present in the samples were alumina and zirconia. Fracture toughness for each sample in the range of 5.878.38 MPam1/2respectively. It was observed that the addition of ceria increased the fracture toughness of the zirconia toughened alumina ceramic composites.