Toughening mechanism of magnesium oxide partially stabilized zirconia ceramics Magnesium oxide partially stabilized zirconia ceramics have high oxygen ion conductivity, high strength and toughness, and good thermal shock resistance, which are promising high temperature functional materials and structural ceramics. Magnesium oxide is used as stabilizer. The cubic phase material is deposited in a small tetragonal phase, so the transformation toughness is very high. Magnesium stabilized zirconia has high fracture toughness. It has excellent mechanical properties, including high strength, fracture toughness, wear resistance, good thermal shock resistance and low thermal conductivity. Because of its high wear and corrosion characteristics, it is used on valves, pumps and gaskets. It is also a material for chemical processing and petrochemical industry.