Name:Insulated Alumina Ceramics Structure:Polycrystal Size:Customized Alumina content:95% or 99% Certificate:ISO9001-2008
Specifications:
1.Wear-resistant
2.Desirable surface fineness
3.OEM/OPM Offered
4.Factory Directly
Productive Technology:
Wearable ceramic is the special corundum ceramic that has been sintered under 1800°C with the
main raw material of Al2O3 and flux of rare metal oxide.Using the high strength organic/inorganic bond
to felt together, and then grinding to the size as drawing required.
Advantages:
1.High temperature
2.Good insulation
3.High strength
4.Precision Process
Alumina Ceramics Properties | |||
| Unit | 95% | 99% |
Density | g/cm3 | 3.6 | 3.8 |
Water absorption | % | <0.4 | <0.2 |
Firing temperature | °C | 1600 | 1800 |
Hardness | HRA | 70 | 80 |
Coefficientoflinearexpansion | *10-6/°C | 5.5 | 5.3 |
Dielectric constant |
| 9 | 10.5 |
Volume resistivity | Ω·cm | — | 1013 |
Breakdownvoltage | KV/mm | 14 | 15 |
Breaking strength | Mpa | 250 | 300 |
High Voltaged Insulated Alumina Ceramics
