Performance:
1). Material: 99% Al2O3
2). Forming method: hot pressure casting
Detailed Product Description
Material :95-99 Alumina ceramic
We manufactures custom technical ceramic parts and components ,covering a wide range of customer reuquirements .We make use of several forming and machining techniques to process components made from alumina, zirconiz ,cordierite .These materials may be used in applications that require wear or coorosion resistance .high temperature capability ,or ceramic insulators for electrical resistance.
Name | Unit | Alumina | Zirconia | ||
Content | % | ≥95 | ≥99 | ≥99.7 | ≥94 |
Density | g/cm3 | 3.65 | 3.80 | 3.90 | 6.00 |
Hardness (Hv0.5) | GPa | 13.1 | 15.0 | 17.1 | 13.2 |
flexural strength
| MPa≥ | 340 | 310 | 370 | 1000 |
Elasticity | GPa | 300 | 330 | 350 | 200 |
Poisson's ratio
|
| 0.23 | 0.23 | 0.23 | 0.30 |
Max Tem. | °C≥ | 1400 | 1750 | 1800 | 1050 |
Heat expansion | ×10-6/°C(40-800°C) | 7.8 | 8.0 | 8.0 | 11.0 |
Thermo conductivity
| W/m·K( 20°C) | 22 | 28 | 31 | 2.6 |
Thermal Resistance | °C | 200 | 200 | 230 | 300 |
dielectric strength
| V/m | 15×106 | 15×106 | 15×106 | 11×106 |
dielectric phase angle (1MHz) | ×10-4 | 4 | 2 | 1 | 16 |
SIC(1MHz) |
| 9.2 | 9.8 | 9.9 | 33 |
Nitric Acid (60%)90°C | WT Loss mg/cm2/day≤ | 0.12 | 0.10 | 0.05 | ≠0 |
Sodium hudroxide (30%)80°C | WT Loss mg/cm2/day≤ | 0.53 | 0.26 | 0.04 | 0.08 |
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