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Customised zirconia ceramic Quickly movable adjustable spanner

Zirconia ceramic 
1. High hardness: 
zirconia ceramics have high hardness and good wear resistance.

2. good high temperature resistance: 
zirconia ceramics have high high temperature resistance and can work for a long time in high temperature environment of 1200℃-1600℃.

3. excellent oxidation resistance: 
zirconia ceramics have good oxidation resistance in the air, not easy to have chemical reaction with oxygen.

4. High strength: 
zirconia ceramics have high flexural and tensile strength, and can withstand greater pressure.

5. good electrical insulation properties: 
zirconia ceramics have excellent electrical insulation properties, suitable for making electrical
  • 02A34

  • HaoRui

Zirconium oxide is called zirconium dioxide, the molecular formula ZrO2, is the main oxide of zirconium, the main minerals containing zirconium in nature are plagioclase zirconium and zirconium quartz and so on. Zirconium oxide is usually white, odourless and tasteless crystals, insoluble in water, hydrochloric acid and dilute sulfuric acid, chemically stable, with high hardness, high melting point, high electrical resistivity, high refractive index and low coefficient of thermal expansion, it has been widely used in abrasion-resistant ceramics, refractory materials, machinery, electronics, optics, aviation and aerospace, biology, chemistry and so on, and our common artificial drills and dental implants are all made of zirconium oxide. Zirconia is the main material.

1, high hardness: the hardness of zirconia products usually up to Mohs hardness 7.5 or more, zirconia ceramics and other parts of the product hardness can be more than 9, second only to diamond. High hardness means that it has a strong wear resistance, so zirconia ceramics is a very good anti-wear material.
2, high melting point: zirconia's melting point is as high as 2715 ℃, and the chemical properties are stable, is an excellent refractory material.
3, low thermal conductivity, low coefficient of expansion: zirconia's thermal conductivity is low in common materials (1.6-2.03W/(m.k)), the coefficient of thermal expansion is close to that of metal. Therefore, zirconia ceramics suitable for official do knot ceramic materials, such as zirconia ceramic mobile phone appearance of structural parts.
4, special conductivity: room temperature zirconia is not conductive, resistivity is great, but in the high temperature environment, zirconia has a certain conductivity, using this principle, zirconia is also used in many electronic devices.

Zirconia Ceramic Performance Table

Mechanical CharacteristicsColorIvory-
Bending Strength800MPa
Compressive trength3000MPa
Elastic Modulus200GPa
Fracture Toughness8MPa m1/2
Weber Coefficient15m
Vickers Hardness1200HV 0.5
Thermal CharactericsCoefficient of Line Thermal Expansion1010-6K-1
Thermal Conductivity3W/mK
Thermal Shock Resistance(Put in Water)300ΔT °C
Max Working Temperature1000°C
Electrical CharacteristicsVolume Resistance at 20°C>1013Ωcm
Dielectric Strength11×106V/m
Dielectric Constant33εr
One MHZ Dielectric Loss Angle at 20°C0.0016tanδ
Chemical CharacteristicsNitric Acid (60%) 90°C≒0.00WT Loss mg/cm^2/day

Sulphuric Acid (95%) 95°C0.04

Caustic Soda (30%) 80°C0.08

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