What are magnesium oxide partially stabilized zirconia ceramics?

Magnesium oxide partially stabilized zirconia ceramics (Mg-PSZ), which we usually refer to as magnesium-zirconia ceramics, are yellow in color and have a density of about 5.7 g/cm³.

Magnesium Oxide Partially Stabilized Zirconia uses magnesium oxide (MgO) as a stabilizer for zirconia, which has a cubic crystal structure after molding and is more stable. Magnesia-zirconia has better resistance to high temperatures and humidity because it is not affected by phase migration. Zirconium magnesium retains its strength even in humid, high-temperature environments where the mechanical properties of yttrium oxide partially stabilized zirconium oxide begin to deteriorate.

Advantages and disadvantages of magnesium-stabilized zirconia ceramics

The outstanding advantage of magnesium oxide partially stabilized zirconia over yttrium oxide partially stabilized zirconia is its excellent mechanical properties and creep resistance at relatively high temperatures. However, the research and development of magnesium stabilized zirconia is constrained by two unfavorable factors: one is magnesium oxide in zirconia cubic zone solid solution temperature is very high, resulting in magnesium stabilized stable zirconia is not easy to fully sintered; the second is magnesium oxide in zirconium oxide in higher than 1,000 ° C is easy to produce crystalline phase segregation and a large number of tetragonal phase destabilization to make the material properties decline, seriously restricting its application in high temperature zone.

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