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Address: Dashu Industry Park, Nanyuan Village, Yichen Subdistrict, Yixing City, 214225, Jiangsu Province, China
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99% alumina ceramic tube high working temperature industial aluminum ceramic sleeve
Alumina ceramics are classified into high-purity type and ordinary
type.
The high-purity alumina ceramics have a Al2O3 content of 99.9% or
more. Since the sintering temperature is as high as 1650-1990 ° C
and the transmission wavelength is 1 to 6 μm, the molten glass is
generally used to replace the platinum crucible; alkali-resistant
metal corrosion is used as a sodium lamp; it can be used as an
integrated circuit substrate and high-frequency insulation material
in the electronics industry.
Alumina ceramic is a kind of material based on alumina (Al2O3), which is used in thick film integrated circuit. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. It needs to be noted that ultrasonic cleaning is needed.Because of its superior performance, it has been widely used in modern society, meeting the needs of daily use and special performance.
| Properties | Unit | Steatite ceramic | 95% Al2O3 | 99% Al2O3 | Zirconia Ceramic |
| Density | g/cm³ | 2.8 | 3.6 | 3.8 | 5.6 |
| Flexural strength | Mpa | 145 | 300 | 300 | 354 |
| Max Working Temperature | ℃ | 1100 | 1400 | 1600 | 1400 |
| Sintering temperature | ℃ | 1350 | 1700 | 1750 | 1550 |
| Heat resistance | T(℃) | 200 | 220 | 200 | 350 |
| Hardness | Gpa | 5.7 | 7 | 10.7 | 12.3 |
| Elastic modulus | Gpa | 120 | 275 | 320 | 205 |
| Poissons ratio | - | 0.21 | 0.22 | 0.22 | 0.30 |
| Linear expansion coefficient | x 10-6/℃ | 7.9 | 7.1 | 7.8 | 9 |
| Insulation breakdown Intensity | KT/mm | 10 | 16 | 18 | 15 |
| Thermal conductivity | w/(m.k) | 2.5 | 20 | 25 | 2.5 |
| Specific Heat | *10-3J/(kg*K) | 0.75 | 0.78 | 0.78 | 0.4 |
