Share this page by mail Aluminium nitride ceramic powder
Aluminum nitride powders are of high purity with high electrical and thermal properties.
They are used as fillers for thermal conductivity improvement, additives for epoxy molding compounds, and fillers for heat sinks of LED bulbs.
- High thermal conductivity
- High electrical resistance
- High hardness
- Low dielectric loss
- Low metallic impurities (< 700 ppm iron)
- Resistance to corrosion
The choice depends on the desired thermal performance for the resin or composite. Aluminium nitride (AlN) powders increase thermal conductivity up to 150 to 200 W/(m·K), but also provide effective electrical insulation. Boron nitride powders (h-BN) increase thermal conductivity up to 40 to 60 W/(m·K) and thermal stability up to 800–900°C in air, providing a balance between conductivity and ease of application. Alumina powders (Al₂O₃), which are more cost-effective, provide a more moderate conductivity of 20 to 35 W/(m·K). Final Advanced Materials recommends adjusting the particle size and the load level to optimise overall performance.
