Spherical aluminum nitride powder is a kind of filler for heat, which is beige powder. Its purity is high and particle size distribution is average. Its surface is clean and the degree of sphericity is high. The flow ability of spherical aluminum nitride is good. Spherical aluminium nitride powder has property as high thermal conductivity, high filling, hydrolysis reseistance and electrical insulation.
Sperical aluminium nitride is an advanced material with unique benefits due to its high thermal conductivity, electrical insulation, and improved flow characteristics. The spherical morphology of AlN particles enhances its efficiency in applications that require effective heat dissipation, making it particularly valuable in high-power electronics, polymer composites, and various thermal interface materials. Its performance properties make spherical AlN a preferred choice in industries seeking innovative thermal solutions that combine high reliability with ease of processing.
Spherical Aluminum Nitride Powder
| CAS No.:24304-00-5 | Molecular Formula:AlN | Molecular Weight:40.99 |
| EINECS No.:246-140-8 | Melting Point:1680℃ | Boiling Point:2249℃ |
Aluminum Nitride with D50 around 40μm
| Item | Unit | Typical Value | Method/Device | |
| Particle size | D10 | μm | 26.9 | Light Scattering/OMEC Topsizer |
| D50 | μm | 37.8 | ||
| D90 | μm | 52.9 | ||
| SSA | m2/g | 0.06 | 3H-2000A Specific Surface Area Analyzer | |
| Bulk Density | g/cm3 | 1.60 | BT-302 Bulk Density | |
| Tapped Density | g/cm3 | 1.96 | BT-303 Tap Density |
| Item | Unit | Typical Value | Method/Device | |
| Impurity | O | % | 1.28 | Oxygen and Nitrogen analyzer |
| C | ppm | 126 | Carbon and Sulfur Analyzer | |
| Si | ppm | 14 | ICP | |
| Fe | ppm | 6 | ||
| Na | ppm | 5 |
Aluminum Nitride Powder with D50 50μm
| Item | Unit | Typical Value | Method/Device | |
| Particle size | D10 | μm | 34.5 | Light Scattering/OMEC Topsizer |
| D50 | μm | 49.5 | ||
| D90 | μm | 70.9 | ||
| SSA | m2/g | 0.04 | 3H-2000A Specific Surface Area Analyzer | |
| Bulk Density | g/cm3 | 1.62 | BT-302 Bulk Density | |
| Tapped Density | g/cm3 | 2.02 | BT-303 Tap Density |
| Item | Unit | Typical Value | Method/Device | |
| Impurity | O | % | 1.37 | Oxygen and Nitrogen Analyzer |
| C | ppm | 143 | Carbon and Sulfur Analyzer | |
| Si | ppm | 14 | ICP | |
| Fe | ppm | 6 | ||
| Na | ppm | 5 |
Applications
Spherical alumnium nitride powder is raw mateial for thermal grease, thermal gel, thermal pad and thermal interface material.
In thermal management, spherical aluminium nitride is widely used as a filler in thermal interface materials (TIMs) such as thermal greases, adhesives, and gap fillers. Due to its high thermal conductivity and electrically insulating properties, spherical AlN can effectively dissipate heat without compromising electrical safety. The spherical shape of the particles improves packing density, flowability, and distribution within the matrix, ensuring uniform thermal conductivity across the interface. This makes it an excellent choice for applications in electronics, where managing heat is essential to prevent component failure and ensure stable performance in devices like CPUs, GPUs and power modules.
Spherical aluminium itride is also important in high-power electronics, where heat dissipation is critical. As a substrate material in power devices and RF modules, it efficiently transfers heat away from sensitive components, extending the lifespan of high-power devices used in telecommunications, renewable energy, and automotive applications. The use of spherical AlN in these substrates and packaging solutions helps achieve efficient heat control even under intense operational conditions.
In advanced polymer composites, spherical AlN is used as a thermal filler in engineering plastics, enhancing the thermal conductivity of polymers used in electronics housing, LED casings, and automotive parts. Its spherical shape promotes uniform dispersion within polymers, providing both mechanical strength and thermal management, essential for components exposed to high temperatures.