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

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/℃
  • 02D05

  • HaoRui

Zirconia's exceptional strength and remarkable resistance to corrosion, wear, and abrasion make it an ideal material for various applications. Its ability to withstand degradation makes it a perfect choice for manufacturing bearings, bushings, seals, and grinding components. Additionally, zirconia's high resistance to developing cracks, known as 'fracture toughness', has made it a popular choice in structured ceramics, oxygen sensors, and dental ceramics. With its superior properties, zirconia continues to be a versatile and reliable material in industries requiring durability and longevity.

Conventional zirconias contain the metastable transformable particles, so stabilizing need to performed to prevent phase transformation. MgO partial stabilized zirconia (Mg-PSZ) was achieved by adding less MgO stabilizer than necessary to provide a consistent cubic structure, the rest remains transforming between monoclinic below and tetragonal above the transformation temperature. So it got a drastically reinforced strength and resistance to temperature changing.


  • 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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