Technical Specification of Aluminum Oxide Micron Powder (Al₂O₃, 99.5+%, 34 – 82 µm):
1. Product Name: Aluminum Oxide Micron Powder
2. Chemical Formula: Al₂O₃
3. Purity: 99.5% minimum
4. Particle Size: 34 – 82 µm
5. Appearance: White, fine powder
6. Specific Surface Area: Varies depending on particle size distribution and manufacturing method
7. Density: Approximately 3.95 g/cm³
8. Melting Point: 2,072°C (3,762°F)
9. Boiling Point: Sublimation point is around 2,977°C (5,391°F)
10. Refractive Index: 1.765 (at 589 nm)
11. Mohs Hardness: 9 (one of the hardest known materials)
12. Electrical Conductivity: Insulator (high electrical resistivity)
13. Thermal Conductivity: 30 W/(m·K)
14. pH (in water): 7 (neutral)
15. Packaging: Typically sealed in bags or drums to avoid contamination and moisture absorption.
Applications of Aluminum Oxide Micron Powder (Al₂O₃, 99.5+%, 34 – 82 µm):
- Abrasives:
- Given its hardness, aluminum oxide powder (especially within this particle size range) is used in abrasive materials, including sandpapers, polishing compounds, and grinding wheels. It is highly effective in industries such as metal finishing, ceramic grinding, and glass polishing.
- Refractory Materials:
- The high melting point of aluminum oxide (over 2000°C) makes it ideal for use in refractory applications, including furnaces, kilns, and reactors in high-temperature environments like steel production and metal casting.
- Ceramic Manufacturing:
- Aluminum oxide powder is used in producing various ceramic materials, including industrial ceramics, ceramic coatings, and components requiring excellent wear resistance, high strength, and thermal stability.
- Electronics:
- Due to its excellent insulating properties, aluminum oxide is used in electronic components, including insulators, substrates for semiconductors, capacitors, and other components that require high dielectric strength and thermal conductivity.
- Polishing and Surface Finishing:
- This powder is ideal for polishing and surface finishing applications. It is widely used for polishing metal surfaces, gemstones, optical lenses, and semiconductor components due to its ability to smooth and refine surfaces at the microscopic level.
- Catalysts and Catalyst Supports:
- Aluminum oxide is commonly used as a support material in catalytic processes, such as in petroleum refining, hydrogenation reactions, and environmental catalysis. The high surface area and stability of the material make it an excellent medium for facilitating chemical reactions.
- Water Filtration:
- Aluminum oxide powder is used in certain filtration applications, such as water purification systems, where its ability to adsorb impurities can help in improving water quality by removing contaminants.
- Thermal Insulation:
- The high thermal conductivity of aluminum oxide powder allows it to be used as an insulating material in high-performance environments, including heat shields, high-temperature pipes, and components exposed to extreme thermal conditions.
- Battery Technologies:
- Aluminum oxide is used in advanced battery technologies, including lithium-ion batteries. It is used as a protective coating on electrodes or as part of the separator in batteries to improve their stability, performance, and cycle life.
- Cutting Tools:
- Aluminum oxide in micron powder form is also used in the production of cutting tools and wear-resistant coatings due to its ability to withstand high levels of abrasion and temperature, making it suitable for machining hard materials such as metals and ceramics.
This specific particle size range of 34 – 82 µm offers an ideal balance between abrasive performance, surface refinement, and material strength for a range of industrial applications.
