Structural and Microstructure Relationship with Fracture Toughness of CeO_2 Addition into Zirconia Toughened Alumina (ZTA) Ceramic Composites

摘要

The effect of CeO_2 addition in zirconia toughened alumina (ZTA) was examined. The CeO_2 addition 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 5.87-8.38 MP am~(1/2) respectively. It was observed that the addition of ceria increased the fracture toughness of the zirconia toughened alumina ceramic composites.