Nanometer Zirconia (Nano 3Y-TZP)
Zirconia offers chemical and corrosion resistance at high temperatures up to 2100°C – well above the melting point of Alumina. In its pure form, crystal structure changes limit use in mechanical/temperature applications, but stabilised Zirconias with Ytrium Oxide or Magnesium additives can produce materials with very high strength, hardness and in particular, toughness.
- 3Y-TZP have excellent mechanial properties and have very high bending strength in room temperature;
- 3Y-TZP is called to "ceramic steel" because of its very high resistance to crack propagation, high fracture toughness;
- With similar to some types of steel themal expansion, 3Y-TZP can connect with steel easily;
- Very good sesistance to chemical corrosion, ziconia can stable in acid, alkali, liquid glass and molten metal.
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Properties of Zirconia ceramics (3Y-TZP) |
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Property |
Item |
Data |
Unit |
|
Mechanical Characteristics |
Color |
Blue |
|
|
Density |
6.05 |
g/cm3 |
|
|
Bending Strength |
1200 |
MPa |
|
|
Compressive strength |
3,000 |
MPa |
|
|
Elastic Modulus |
220 |
GPa |
|
|
Fracture Toughness |
14 |
MPa m1/2 |
|
|
Weber Coefficient |
25 |
m |
|
|
Vickers Hardness (HV 0.5) |
1,200 |
MPa |
|
|
Thermal Characteristics |
Coefficient of Line Thermal Expansion |
10 |
10-6 K-1 |
|
Thermal Conductivity |
2 |
W/mK |
|
|
Thermal Shock Resistance (Put in Water) |
300 |
∆T °C |
|
|
Max Working Temperature |
1,000 |
°C |
|
|
Electrical Characteristics |
Volume Resistance at 20°C |
>1013 |
Ωcm |
|
Dielectric Strength |
11×106 |
V/m |
|
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Dielectric Constant |
33 |
εr |
|
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Dielectric Loss Angle at 20°C(1MHz) |
0.0016 |
tanδ |
|
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Chemical Characteristics |
Nitric Acid (60%) 90°C |
≒0.00 |
WT Loss mg/cm2/day |
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Sulphuric Acid (95%) 95°C |
0.04 |
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Caustic Soda (30%) 80°C |
0.08 |
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