The wide applications of spherical alumina

Due to its larger surface area and uniform distribution compared to other morphologies, spherical alumina powder exhibits superior performance in practical applications compared to other shapes of alumina materials. It can be used not only in ceramics, catalysts and their carriers, but also in various fields such as grinding, polishing, and electronic devices.

Thermal Conductive Filler Field
With the advent of the information age, advanced electronic devices are becoming increasingly miniaturized, and the heat generated by these devices is increasing exponentially, placing many demands on system heat dissipation. Because alumina is widely available in the market, comes in many varieties, and is cheaper than other thermal conductive materials, and can be added in large quantities to polymer materials, it has a high cost-performance ratio. Therefore, most high-thermal conductivity insulating materials currently use alumina as a high-thermal conductivity filler.

Ceramics Field
Adding a certain amount of spherical alumina powder during the production of ceramics can significantly change the properties of the ceramics. The low-temperature brittleness of ceramics greatly affects their application range. Ceramic materials with added spherical alumina powder can be used to manufacture low-temperature ductile ceramics.

Grinding and Polishing Field
Compared with traditional granular or flake alumina, spherical alumina has better dispersibility and fluidity. Spherical alumina powder abrasives can be evenly distributed in the polished product, avoiding abnormal powder accumulation. Furthermore, the smooth surface of the particles prevents scratching the workpiece surface, thus improving the surface finish.

Electronic and Optical Materials Field
Spherical alumina has a wide range of applications in the electronic and optical fields. Using spherical alumina as a substrate and adding rare earth elements as activators, this method can produce red luminescent materials with better performance. Spherical alumina particles are uniform in size and evenly dispersed, exhibiting better luminescence performance compared to other shapes of alumina, and better determining the filling structure of the luminescent material.

Catalyst and Carrier Field
Because alumina has a large number of unsaturated chemical bonds on its surface and a large number of catalytic active centers, it exhibits high chemical activity. Moreover, spherical alumina has the advantages of low particle wear, long service life, and large specific surface area.

3D Printing Field
Spherical alumina is one of the most commonly used materials for 3D printing due to its high strength, high sphericity, and high-temperature resistance.

Surface Protective Coatings
The use of spherical alumina as a spray coating material is currently one of the research hotspots. This spray coating material not only provides protection for polymer materials, glass, metals, and alloys, but also extends the lifespan of stainless steel products such as kitchen cookware.

From all perspectives, fine alumina has become one of the new materials that my country needs to prioritize for development. With its widespread application in traditional fields and rapid penetration into emerging industries such as new energy vehicles and photovoltaic power generation, demand is constantly increasing, and the fine alumina industry has broad market prospects.