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Advanced Mg-Psz MGO Zirconia Partially Stabilized Ceramic Magnesia-stabilized wheel

Magnesium-stabilised zirconia ceramics use magnesium oxide (MgO) as a stabilising agent for zirconia, and the crystal structure is cubic lattice after moulding, which is more stable. Magnesia-zirconia has better resistance to high temperature and humidity because it is not affected by phase migration. Magnesia-zirconia retains its strength even in humid, high-temperature environments where the mechanical properties of yttrium oxide partially stabilised zirconia begin to deteriorate.

Colour: yellow
Density: 5.7 g/cm3
Hardness: 11.8 GPa
Maximum working temperature: 1000°C
Thermal conductivity: 2.2W.(MK)-1
Flexural strength: ≥900 Mpa
Fracture toughness: >7.0 (Mpa.m1/2)
Thermal expansion coefficient (0~1400℃): 10.2×10-6/℃
  • 02D07

  • HaoRui

Zirconia's exceptional strength and remarkable resistance to corrosion, wear, and abrasion make it an ideal material for various applications.

What is magnesium oxide partially stabilized zirconia ceramics?What is magnesium oxide partially stabilized zirconia ceramics?

The oxidase partially stable zirconia ceramics (MG-PSZ), commonly known as magnesium-zirconia ceramics, have a yellow color and a density of approximately 5.7 g/cm³.

Magnesium oxide is used as the stabilizer for zirconia in MG-PSZ, resulting in a more stable crystal structure. Magnesium zirconium exhibits superior resistance to high temperatures and moisture due to its immunity to phase migration. Even in humid and high temperature environments, where the mechanical properties of yttrium partially stabilized zirconia deteriorate, magnesium zirconium retains its strength.

Conventional zirconias typically contain metastable transformable particles, which necessitates the need for stabilization to prevent phase transformation. One way to achieve this is through the use of MgO partial stabilized zirconia (Mg-PSZ). In Mg-PSZ, a smaller amount of MgO stabilizer is added, enough to maintain a consistent cubic structure. The remaining portion of the zirconia undergoes transformation between monoclinic below and tetragonal above the transformation temperature. This unique composition results in significantly enhanced strength and resistance to temperature changes. Mg-PSZ offers a promising solution for applications requiring durable materials that can withstand varying thermal conditions.


  • Wire forming/drawing mold;

  • Precision in high-wear environments;

  • Axis;

  • furnace treatment tube;

  • Wear pad;

  • thermocouple protection tube;

  • sand blast nozzle;

  • Refractory materials;

  • Furnishing crucible;

  • Knives and blades;

  • fuel cell parts;

  • Bearings and rollers;

  • Weld nozzles and pins;

  • Gas igniter;

  • Electric insulator;

  • Ceramic guide plate;

  • Oxygen sensor;

  • Mechanical seal;

Mg-PSZ  Performance Table

Mechanical CharacteristicsColorGold Yellow-
Bending Strength400MPa
Compressive trength2500MPa
Elastic Modulus250GPa
Fracture Toughness6-7MPa m1/2
Weber Coefficient12m
Vickers Hardness1100HV 0.5
Thermal CharactericsCoefficient of Line Thermal Expansion1010-6K-1
Thermal Conductivity3W/mK
Thermal Shock Resistance(Put in Water)450ΔT °C
Max Working Temperature2100°C
Electrical CharacteristicsVolume Resistance at 20°C>1014Ωcm
Dielectric Strength13×105V/m
Dielectric Constant28εr
One MHZ Dielectric Loss Angle at 20°C0.0017tanδ
Chemical CharacteristicsNitric Acid (60%) 90°C0.1WT Loss mg/cm^2/day

Sulphuric Acid (95%) 95°C0.34

Caustic Soda (30%) 80°C0.95

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