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About US
NOVORAY aims to become an enterprise that provides industrial powder materials and application services to global customers.
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【基本说明】：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.
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| 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 |
| 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=2-50?m |
| Particle size distribution | May be adjusted on basis of typical distribution as needed, including multimodal distribution and narrow-range distribution. |
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