Introduction Alumina ceramic liner
Alumina ceramic liner — wear resistant ceramic parts are used in a wide range of industries, due to their excellent mechanical, electrical, thermal and biochemical properties. We offer many types of ceramic finished parts from porcelain, steatite, cordierite, zirconia, mullite and various percentages of alumina.
Characteristics Alumina ceramic liner
- Electrical insulation
- Mechanical strength
- Resistance to high temperatures
- Resistance to thermal shock
- Wear resistance and hardness
- Chemical resistance
Technical Data Sheet of Alumina ceramic liner
| Item | Test condition | Unit | 96% alumina ceramics | 99% alumina ceramics | 99.5-99.7% alumina ceramics |
| Chemical ingredients | Al2O3 | Al2O3 | Al2O3 | ||
| Bulk Density | g/cm3 | >3.6 | 3.88 | 3.90 | |
| Max. Use Temp. | 1450℃ | 1600℃ | 1650℃ | ||
| Water absorption | % | 0 | 0 | 0 | |
| ROHS Hardness | ≥85 | ≥89 | ≥89 | ||
| Flexural strength | 20℃ | Mpa(psix10^3) | 358(52) | 550 | 550 |
| Compressive Strength | 20℃ | Mpa(psix10^3) | 2068(300) | 2600(377) | 2600(377) |
| Fracture Toughness | K(l c) | Mpa m^1/2 | – | – | – |
| Coefficient of thermal expansion | 25-1000℃ | 1X10^-6/℃ | 7.6 | 7.9 | 8.2 |
| Coefficient of thermal conductivity | 20℃ | W/m.K | 16 | 17-30.0 | 17-30.4 |
| Thermal Shock Resistance | ^Tc | ℃ | 250 | 200 | 200 |
| Dielectricity constant | 1MHz.25℃ | 9 | 9.7 | 9.7 | |
| Dielectric strength | ac-kV/mm(ac V/mil) | 8.3(210) | 8.7(220) | 8.7(220) | |
| Volume Resistivity | 100℃ | ohm-cm | >10^13 | >10^14 | >10^14 |
