Ningbo Victor Import And Export Co., Ltd has been manufacturing ceramic components for more than 10 years. We aim to provide customers the best quality products with the most competitive prices, thanks to our skilled workers, we can always save the production cost without reducing quality of products.
The application of alumina ceramic:
Alumina ceramic as one of the most well-known ceramic material, as its various levels of purity(85% Al2O3, 90% Al2O3, 95% Al2O3, 96% Al2O3, 99% Al2O3), and exnt mechanical, electrical, thermal and biochemical performances, widely used in high electrical insulation, high mechanical strength, high temperature resistance, high wear and chemical resistance.
The advantages of alumina ceramic:
- Electrical insulation
- Mechanical strength
- Low density
- Tracking resistance
- Resistance to high temperatures
- Resistance to thermal shock
- Wear resistance and hardness
- Resistance to climate and ageing
- Environmentally compatible disposal
- Chemical resistance
- Food safe
The manufacturing process of alumina ceramic:
Ningbo Victor Import And Export Co can manufacture alumina ceramic via four different process, include dry pressing, injection moulding, isostatic pressing and extruding. We will manufacture the alumina parts as per customer’s process requirement, or recommend the most cost-effective process.
Properties of alumina ceramic:
| Property | Unit | 99.7%AL2O3 | 95% AL2O3 |
| Density | g/cm3 | 3.9 | 3 |
| Water Absorption | % | 0 | 0 |
| Sintering Temperature | °C | 1700 | 1650 |
| Hardness | HV | 17-23 | 12-15 |
| Bending Strength | MPa | 300 | 280 |
| Compressive Strength | MPa | 2100 | 1800 |
| Max Working Temperature | °C | 1,500 | 1,400 |
| Co-efficient of Thermal Expansion 0-1000°C | /°C | 7.9×10-6 | 7.8×10-6 |
| Thermal Shock Resistance | T(°C) | 150 | 140 |
| Thermal Conductivity | W/m.k (25°C,300°C) | 25 | 21 |
| Volume Resistivity 20°C | Ω.cm | >1012 | >1012 |
| Dielectric Strength | KV/mm | 17 | 15 |
| Dielectric Constant (100 Mhz) | (E) | 9 | 9 |
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