Zirconia Ceramics

The advantages of Zirconia Ceramics

1. High hardness, high toughness, high bending strength, zirconia ceramic density is 5.95-6.05g/cm3, zirconia ceramic toughness is 8MPa · m1/2 or more higher;

2. High wear resistance, low friction coefficient, wear resistance is 15 times that of alumina ceramics, friction coefficient is only 1/2 of that of alumina ceramics, after grinding(polishing) processing, the surface finish is better, up to ▽9, mirror surface, extremely smooth, with a lower coefficient of friction;

3. Good insulation, corrosion resistance, no static electricity, high temperature resistance, excellent thermal insulation, thermal expansion coefficient is close to that of steel;

4. Zirconia ceramics have self-lubrication, can solve the pollution caused by the lubricating medium and inconvenience caused by feeding.

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Type of Zirconia Ceramics

1. Properties of Yttria Stabilized Zirconia ceramics: The working temperature is up to 2100 ℃; high density, low thermal conductivity; chemically inert; anti-metal melting; ion conductivity; wear resistance, high hardness, high fracture toughness;

2. Properties of Cerium Stabilized Zirconia ceramics: The working temperature is up to 2100 ℃; high density, low thermal conductivity; chemically inert; resistance to metal melting; wear resistance, high hardness, high fracture toughness;

3. Properties of Magnesium Stabilized Zirconia ceramics: The working temperature is up to 2400 ℃; high density, low thermal conductivity; chemically inert; resistance to metal melting; wear resistance, high hardness, high fracture toughness.

Zirconia Ceramic performance parameters

Chemical composition: ZRO2≥94.5%
Density: 6g/cm3
Sintering temperature: 1550~2600°C
Breakdown voltage strength: 15 kV/mm
Water absorption: <0.01%
Compressive strength: 5000 MPa
Hardness: ≥88(Hra)
Volume resistance: >1012 cm
Bending strength: 1100 MPa
Thermal expansion coefficient: 6.9~10 x10^(-6)/k
Thermal conductivity: 2.5 W/m-k
Heat resistance: 1800 °C

Typical Applications of Zirconia Ceramics

Zirconia ceramics are mainly used in high-power devices, IC MOS tubes, IGBT chip-type thermal insulation, high-frequency power, communications, mechanical equipment, high current, high voltage, high temperature and other parts that require thermal conductivity and thermal insulation.

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