High Hardness Low Density Alumina Ceramic Plate 1650C 1680C
High Hardness Low Density Alumina Ceramic Plate
Description:
The alumina plate is made of aluminum oxide ceramics. Alumina is a ceramic material with high thermal conductivity, compressive strength, and thermal shock resistance. It also has a low thermal expansion, making it a suitable material for furnace use in the crucible, tube, and thermocouple sheath form. Aluminum oxide ceramic plates can withstand high temperature and maintain high strength and hardness.
Technical Parameters:
| Test item/Unit | Numerical Value | Test item/Unit | Numerical | ||||
| Product Material | Alumina | Zirconia | Product Material | Alumina | Zirconia | ||
| Component Content % | ≥99% | ≥95% | ≥90% | Volume Resistance MM | >1012 | >1012 | >1012 |
| Sintering Temp ℃ | 1780-1800 | 1650-1680 | 1550-2600 | Bending Strength Mpa | 400 | 320 | 1100 |
| Specific Gravity g/cm3 | ≥3.8 | ≥3.6 | >6 | Thermal Expansion Coefficient'10' | 6.8-8.0 | 6.2-8.5 | 6.9-10 |
| Breakdown Voltage Strength kv/mm |
15 | 15 | 15 | Roughness um | ≤0.8 | ≤0.8 | ≤0.8 |
| Bibulous Rate% | <0.01 | <0.01 | <0.01 | Mirror Polished Ra | ≤0.05 | ≤0.1 | ≤0.05 |
| Anti Pressure Mpa | 3700Mpa | 2400Mpa | 5000Mpa | Thermal Conductivity W/m.k | 25 | 20 | 25 |
| Hardness Hra | ≥88 | ≥82 | ≥88 | Temperature Resistance ℃ | 1700 | 1600 | 1800 |
Advantages:
1.High thermal conductivity of more than 170W/m. K.
2.High resistivity.
3.Low dielectric loss.
4.Good insulation.
5.Some other excellent properties.
Application:
1.Ceramics, mines and other grinding equipment lining.
2·Material thansfer equipment.
3·inside and outside surface of powder separating equipment on iron and steel works.
4·Thermal and power plants.
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