Property | Alumina | Property | Zirconia |
Bulk density(g/cm3) | 3.85-3.93 | The density (g/cm3) | 6.05 |
Hardness(HRA≥) | 86 | Bibulous rate(%) | 0 |
Bending strength(Mpa≥) | 300 | Thermal expansion coefficient(10-6 /k) | 10.5 |
Maximum service temperature(℃) | 1500 | Young's modulus of elasticity(Gpa) | 210 |
Linear expansion coefficient(×10-6/℃) | 7.15-7.67 | Poisson's ratio(/) | 0.3 |
Dielectric constant(εr(20℃,1MHz)) | 9.21 | Hardness (MPa) | 1200 |
Dielectric loss(tanδ×10-4,1MHz) | 2.5 | Bending strength (MPa) | 950 |
Volume resistivity(Ω·cm(100℃)) | 9.2*1016 | The bending strength (MPa) | 210 |
The compressive strength(Mpa≥) | 2500 | Compressive strength (MPa) | 2000 |
Flexural strength(Mpa≥) | 200 | Fracture toughness(Mpa.m1/2) | 10 |
Modulus of elasticity(Gpa) | 300 | Thermal conductivity (W/m.k) | 2 |
Poisson's ratio | 0.2 | Specific resistivity(Ω.mm2/m) | >1015 |
Thermal conductivity Coefficient(W/m·K(20℃)) | 20 | Maximum service temperature(℃) | 1350 |
Dc breakdown strength | 43.7 | Acid and alkali corrosion resistance(/) | strength |
Tensile seal strength(Mpa) | 104.4 |
|
Properties :
1. High Hardness wear resistance
2. High precision 3. Good mechanical strength 4. High temperature and chemical resistance 5. Electric insulation 6. Low thermal expansion 7. Smooth surface finish 8. Thermal Shock Resistance Material :
1. Alumina ceramic
2. Zirconia ceramic 3. Silicone carbide 4. Silicone nitride Lead-time: 20-30 days for mass production, 7-15 days for samples. |
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