Technical Specification of Aluminum Oxide Micron Powder (Al₂O₃, 99.5+%, 500 – 710 µm):
1. Product Name: Aluminum Oxide Micron Powder
2. Chemical Formula: Al₂O₃
3. Purity: 99.5% minimum
4. Particle Size: 500 – 710 µm
5. Appearance: White, fine powder
6. Specific Surface Area: Varies depending on 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 moisture absorption.
Applications of Aluminum Oxide Micron Powder (Al₂O₃, 99.5+%, 500 – 710 µm):
- Abrasives:
- Aluminum oxide powder in the 500 – 710 µm size range is typically used for extremely coarse abrasive applications, where substantial material removal is required. It is ideal for rough grinding, sandblasting, and surface preparation tasks in heavy industries such as metalworking, ceramics, and stone processing. This size range is used in large grinding wheels, abrasive discs, and sandpapers designed for tough, industrial-scale operations.
- Refractory Materials:
- Due to its high melting point and exceptional thermal resistance, aluminum oxide is used in the production of refractory materials. The 500 – 710 µm particle size is suitable for making refractory linings, heat shields, and insulation materials in high-temperature environments such as furnaces, kilns, and reactors. It is commonly used in industries like steel production, glass manufacturing, and cement.
- Ceramic Production:
- Aluminum oxide powder in this particle size range is used to manufacture advanced industrial ceramics. Its excellent mechanical strength, wear resistance, and thermal stability make it a popular choice for creating durable ceramic components in industries such as aerospace, automotive, and electronics. These components need to withstand extreme conditions, and aluminum oxide provides the necessary durability.
- Polishing and Surface Refining:
- The 500 – 710 µm aluminum oxide powder is commonly used for coarse polishing and surface refinement. It is particularly effective in rough polishing and grinding of large surfaces or tough materials, such as metals, ceramics, glass, and stone. It is widely used in industrial grinding and polishing processes, where significant material removal is required to smooth rough surfaces.
- Electronics and Electrical Insulation:
- Aluminum oxide is often used in the electronics industry for electrical insulators, substrates for semiconductors, capacitors, and other components that require electrical resistance and thermal conductivity. This size range of aluminum oxide powder is suitable for insulating and stabilizing components in high-performance electronic systems.
- Catalyst Supports:
- Aluminum oxide powder serves as a catalyst support in various industrial chemical reactions, including petroleum refining, hydrogenation, and ammonia production. The 500 – 710 µm particle size range is effective for bulk catalyst support applications, where a large surface area and material stability are needed to improve catalytic reactions and process efficiency.
- Water Filtration:
- Aluminum oxide is used in some filtration systems for water purification, where it helps to remove particulates and impurities from water. The 500 – 710 µm particle size range is ideal for filtration processes that need to handle larger particles or those requiring coarse filtration. It is used in both industrial and municipal water treatment applications.
- Thermal Insulation:
- Due to its high melting point and excellent thermal conductivity, aluminum oxide powder is used in thermal insulation applications. The 500 – 710 µm particle size range is ideal for creating insulating materials for use in high-temperature environments, such as heat shields, furnace linings, and reactors. This powder provides high thermal stability and resistance to thermal shock, making it essential in industries like metallurgy and aerospace.
- Battery and Energy Storage:
- In the energy storage sector, particularly for lithium-ion and sodium-ion batteries, aluminum oxide is used as an insulating and stabilizing material in battery electrodes and separators. This particle size range enhances thermal stability, preventing overheating and ensuring safer, more efficient operation of energy storage systems.
- Cutting Tools and Wear-Resistant Coatings:
- Aluminum oxide powder in this size range is ideal for the production of cutting tools, wear-resistant coatings, and abrasives used in heavy-duty machining operations. Its hardness and abrasion resistance make it effective in creating durable tools that can handle the cutting and machining of hard materials like metals, ceramics, and composites.
The 500 – 710 µm particle size range of aluminum oxide is particularly well-suited for industrial applications requiring aggressive material removal, rough grinding, and surface preparation. Its hardness, thermal stability, and resistance to abrasion and wear make it an essential material for industries such as metalworking, ceramics, refractories, electronics, and energy storage. Its ability to withstand high temperatures and mechanical stress ensures its continued use in demanding industrial environments.
