Impacts of inclusion of additives on physical, microstructural, and mechanical properties of Alumina and Zirconia toughened alumina (ZTA) ceramic composite: A review

Zirconia toughened alumina (ZTA) is one of the widely discussed advanced ceramic in recent times. ZTA boasts excellent mechanically properties such as high hardness, high strength. Additionally, the material is chemically inert and possess greater compressive strength. Despite having such versatility, lack of fracture toughness and shock resistance prevent its utilization in broad scale. To improve the fracture toughness and other mechanical properties, metals, metallic oxides additives such as MgO, CaO, CeO2, Cr2O3, strontium hexa-alumina, Ag, Ni, FeO were commonly added to ZTA in the academic research. The purpose of this review paper is to provide a wholistic perspective on the trend of mechanical property alteration upon addition of different additives. Trend of mechanical property alteration such as density, fracture toughness, microhardness, strength provide a comparative analysis to solve this critical research and industrial problems.