Measurement of Thermal Expansion and Volume Changes in Partially Stabilized Zirconia

One of the most promising applications of partially stabilized zirconia is in the metal extrusion industry in which CaO or MgO stabilized ZrO2 dies have outperformed the conventional metal dies. The secret of this success lies in the polyphase nature of PSZ and its high toughness, low expansion and excellent thermal shock resistance which are linked to volume changes associated with phase transformation during heating and cooling.