Technical Specification of Aluminum Oxide Micron Powder (Al₂O₃, 99.5+%, 90 – 125 µm):
1. Product Name: Aluminum Oxide Micron Powder
2. Chemical Formula: Al₂O₃
3. Purity: 99.5% minimum
4. Particle Size: 90 – 125 µm
5. Appearance: White, fine powder
6. Specific Surface Area: Dependent on the particle size and manufacturing process
7. Density: Approximately 3.95 g/cm³
8. Melting Point: 2,072°C (3,762°F)
9. Boiling Point: Sublimation point around 2,977°C (5,391°F)
10. Refractive Index: 1.765 (at 589 nm)
11. Mohs Hardness: 9 (second hardest material after diamond)
12. Electrical Conductivity: Insulating material (high resistivity)
13. Thermal Conductivity: 30 W/(m·K)
14. pH (in water): Neutral (around pH 7)
15. Packaging: Typically packed in sealed, moisture-resistant bags or drums to prevent contamination and absorption of moisture.
Applications of Aluminum Oxide Micron Powder (Al₂O₃, 99.5+%, 90 – 125 µm):
- Abrasives:
- Aluminum oxide powder in the 90 – 125 µm particle size range is ideal for applications that require heavy abrasive action. It is commonly used in products such as grinding wheels, polishing compounds, and abrasive papers, especially in rough grinding and material removal tasks. This size is suitable for metalworking, ceramic finishing, and preparation of rough surfaces.
- Refractory Materials:
- Due to its high melting point (around 2,072°C), aluminum oxide is widely used in refractory applications, including the construction of furnaces, kilns, and high-temperature reactors. This particle size range is particularly effective in environments that require excellent thermal stability and resistance to thermal shock, such as in steel production, glass manufacturing, and high-temperature processing.
- Ceramic Production:
- Aluminum oxide powder is essential in manufacturing advanced ceramics. It is used to create components that require exceptional wear resistance, high strength, and thermal stability. These ceramics find applications in industries such as automotive, aerospace, electronics, and semiconductor manufacturing.
- Electronics and Electrical Insulation:
- With its high dielectric strength and insulating properties, aluminum oxide powder is used in electrical insulators, substrates for semiconductors, capacitors, and other electronic components. This powder helps in stabilizing and insulating critical electronic components, providing both thermal and electrical insulation in high-performance systems.
- Polishing and Surface Refining:
- Aluminum oxide powder in this particle size range is often used for heavy-duty polishing and surface preparation tasks, such as deburring, removing rust, and refining metal or ceramic surfaces. It is commonly used for polishing and finishing harder materials, including metals, glass, and gemstones, and also in semiconductor wafer polishing.
- Catalyst Support:
- Aluminum oxide is commonly used as a support material in catalytic processes. Its high surface area, stability, and resistance to high temperatures make it an excellent medium for catalysts in chemical reactions, such as petroleum refining, hydrogenation, and other industrial chemical processes.
- Water Treatment and Filtration:
- Aluminum oxide powder can be employed in certain filtration and purification systems, where its ability to adsorb contaminants makes it effective in water treatment. It is used to remove impurities and particulate matter from water, making it useful in industrial, environmental, and municipal water purification applications.
- Thermal Insulation:
- The thermal properties of aluminum oxide powder make it suitable for use as a thermal insulator. It is applied in various industrial applications, including in the production of heat shields, furnace linings, and insulation for equipment operating under extreme temperature conditions, such as in metallurgy and high-temperature reactors.
- Battery and Energy Storage:
- Aluminum oxide is used in certain battery technologies, particularly in lithium-ion and sodium-ion batteries, where it may act as a stabilizing coating or an insulating layer. Its use helps improve the battery’s performance, stability, and thermal management, which is critical for the longevity and efficiency of energy storage devices.
- Cutting Tools and Wear-Resistant Coatings:
- Due to its hardness and resistance to wear, aluminum oxide powder is also used in manufacturing cutting tools, drill bits, and wear-resistant coatings. The material is ideal for machining hard materials like metals and ceramics, making it invaluable in industries such as automotive, aerospace, and precision engineering.
The 90 – 125 µm particle size range offers a good balance between abrasive action and the ability to provide a smooth surface finish. This size range is ideal for applications where more aggressive grinding, surface preparation, and material removal are required. Aluminum oxide powder in this range is used across industries that demand high-performance materials with excellent hardness, thermal stability, and mechanical properties.
