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Alumina Ceramic Products Wear resistance and high temperature resistance Ceramic range hood purifier
product name:industrial alumina ceramics parts
Industrial ceramics and applications:
Alumina ceramics are mainly composed of Al2O3 and contain a small amount of SiO2, also known as high alumina ceramics. According to the different content of Al2O3, it can be divided into 75 porcelain (containing 75% Al2O3, also known as corundum mullite porcelain), 95 porcelain, and 99 porcelain, the latter two of which are also known as corundum porcelain. Aluminum oxide ceramics have good high-temperature resistance and can be used up to 1950 ℃,. Has good electrical insulation performance and wear resistance. The hardness of microcrystalline corundum is extremely high (second only to diamond) Aluminum oxide ceramics are widely used as refractory materials, such as refractory bricks, crucibles, thermocouple sleeves, cutting tools for quenched steel, metal wire drawing dies, spark plugs for internal combustion engines, flow guides and bearings for rockets and missiles, etc.
The performance characteristics of ceramic materials: Ceramic materials have high melting point, high hardness, high chemical stability, high temperature resistance, oxidation resistance, corrosion resistance, and other characteristics. Ceramic materials also have the characteristics of low density, high elastic modulus, wear resistance, and high strength. Functional ceramics also have special properties such as electricity, light, and magnetism.
products index:
| Ceramic characteristic table | |||
| name | 99% AL2O3 | 95% AL2O3 | |
| physical propertyessential component | essential component | AL2O3≥99% | AL2O3≥95% |
| Density(g/cm3) | 3.85 | 3.6 | |
| water absorption% | 0 | 0 | |
| sintering temperature | 1690 | 1670 | |
| material characters | Hardness(HV) | 1700 | 1600 |
| break off strength | >6500 | >2900 | |
| compressive strength | 30000 | 25000 | |
| thermal response | maximum service tempera- ture | 1500 | 1400 |
| thermal expansion coefficient | 8 | 7.8 | |
| 10-6/℃ | |||
| 0-1000℃ | |||
| Heat shock resistance T(℃) | 200 | 220 | |
| thermal conductivity W/m.k | 31 | 22 | |
| electrical specification | volume resistivity Ω.cm | >1012 | >1012 |
| Insulation destructive power KT/m | 18 | 16 | |
| dielectric constant 1MHZ(E) | 9.2-10.5 | 9.0-10 | |
Company workshop equipment:
Picture of ceramic range hood purifier:
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