5N high-purity alumina polycrystalline block material & crushed crystals
- Commodity name： 5N high-purity alumina polycrystalline block material & crushed crystals
- =Main purpose： 1. Sapphire single crystal 2. LED substrate wafer 3. Smartphone cover plate 4. Optical glass coating
- =Product overview： The company uses the cold crucible method to prepare high-purity polycrystalline alumina, which has advantages such as high purity (≥99.999%) and high filling density.
1. Sapphire single crystal 2. LED substrate wafer 3. Smartphone cover plate 4. Optical glass coating
Key words:
5N high-purity alumina polycrystalline block material & crushed crystals
Product Parameters
| Project | Unit | Product Model |
| Al2O3 Content | % | >=99.999% |
| Phase | α | α-Al2O3 |
| Appearance | -- | Block or Granular Polycrystal |
| Na | ppm | ≤2 |
| Fe | ppm | ≤2 |
| Ca | ppm | ≤1 |
| Si | ppm | ≤2 |
| Cu | ppm | ≤1 |
| Mg | ppm | ≤1 |
| Size | mm | 1-3mm\3-10mm\10-30mm\3-30mm\50-100mm\100-200mm (can be customized according to user requirements) |
| Loose Bulk Density | g/cm3 | / |
| Specific Surface Area | m2/g | / |
| Bulk Density | g/cm3 | >=3.5g/cm3 |
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