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Spherical aluminum oxide powder
Spherical aluminum oxide powder
【Explanation】：Spherical aluminum oxide powder refers to the aluminum oxide powder material made of specific irregular corner particles by process of flame method. It is featured by small surface area and good liquidity.
【Applications】：
>Basic characteristics of spherical aluminum oxide powder：
| Item | Unit | Typical Value |
|---|---|---|
| Appearance | / | White powder |
| Particle morphology | / | Spherical |
| Density | kg/m3 | 3.7×103 |
| Mohs Hardness | / | 6-9.0 |
| Dielectric Constant | / | 9（1MHz） |
| Dielectric Loss | / | 3×10-4（1MHz） |
| Coefficient of Linear Expansion | 1/K | 7×10-6 |
| Thermal Conductivity | W/K·m | 30 |
>Spherical aluminum oxide powder can be sorted on basis of following characteristics and prepared as required by customers:
| Item | Index of Correction | Introduction |
|---|---|---|
| Purity | Al2O3content | 99.0% above |
| Impurity | Na2O | Can be reduced below 3ppm |
| Crystalline phase | ɑ-Al2O3content | Up more than 90% |
| Particle size distribution | D50 | Available within D50=2-50µm |
| Particle size distribution | May be adjusted on basis of typical distribution as needed, including multimodal distribution and narrow-range distribution. |
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