Aluminum Oxide Micron Powder ( Al2O3, 99.5+%, 22-59 µm )

Technical Description:

Aluminum Oxide Micron Powder (Al₂O₃, 99.5+%, 22-59 µm) is a high-purity aluminum oxide (Al₂O₃) powder with a purity of 99.5% or higher. The powder has an average particle size range of 22-59 micrometers (µm), placing it in the medium to coarse particle size category. This size range provides a balance between surface area and mechanical strength, making it suitable for applications that require high flowability, good packing density, and superior wear and thermal resistance.

• Chemical Composition:
  • Aluminum Oxide (Al₂O₃) content: 99.5%+, ensuring minimal contaminants and high purity, which is essential for high-performance applications such as advanced ceramics, coatings, and catalysts.
• Particle Size:
  • The 22-59 µm particle size range is ideal for applications that require medium-sized particles for high packing density, effective sintering, and better mechanical properties. This particle size range offers an optimal combination of surface area for reactivity and strength for demanding industrial processes.
• Shape:
  • The particles are typically irregular in shape, although some may have slight spherical characteristics. Irregular shapes allow for better mechanical interlocking in applications that require sintering or compacting, contributing to high-density and durable parts.
• Purity:
  • With 99.5%+ purity, this powder is free from most impurities, making it suitable for high-performance applications in industries such as aerospace, automotive, electronics, and medical devices where material quality and consistency are critical.

Applications:

1. Abrasives:
   • Aluminum oxide is widely used in abrasives such as grinding wheels, polishing compounds, and sandpapers. The 22-59 µm powder is particularly effective for medium-grit abrasives used in metalworking, ceramic finishing, and surface preparation. Its durability, hardness, and wear resistance make it suitable for applications that require precision material removal.
2. Advanced Ceramics:
   • Alumina powder is used in the production of advanced ceramics that require high strength, wear resistance, and thermal stability. The 22-59 µm alumina powder is ideal for sintering and manufacturing components such as ceramic bearings, high-temperature crucibles, and sintered ceramics used in aerospace, automotive, and electronics industries.
3. Additive Manufacturing (3D Printing):
   • Aluminum oxide powder with a 22-59 µm particle size is suitable for additive manufacturing techniques such as Selective Laser Sintering (SLS) and Direct Metal Laser Sintering (DMLS). This particle size is perfect for producing high-performance parts with excellent mechanical properties, thermal resistance, and precision for industries like aerospace, automotive, and medical applications.
4. Catalysts and Catalyst Supports:
   • Alumina is frequently used as a catalyst support in industrial chemical reactions, especially in petrochemical, pharmaceutical, and chemical processing industries. The 22-59 µm aluminum oxide powder provides a high surface area for supporting catalytic reactions, enhancing the efficiency of processes such as hydrogenation, alkylation, and reforming.
5. Thermal Management:
   • Alumina has excellent thermal conductivity and thermal stability, making it ideal for use in thermal management applications. Aluminum oxide powder is used in the manufacture of heat sinks, thermal interface materials (TIMs), and thermal coatings for electronics, LED lighting, and power devices, helping to efficiently dissipate heat from sensitive components and prevent damage from thermal stress.
6. Electrical Insulation:
   • Aluminum oxide is an excellent electrical insulator, widely used in electrical components such as substrates, insulating coatings, and microelectronic devices. The 22-59 µm aluminum oxide powder is well-suited for creating insulating layers in high-voltage and high-frequency applications, such as in power electronics, sensors, and circuit boards.
7. Coatings and Surface Treatments:
   • Alumina powder is used to create abrasive coatings, wear-resistant coatings, and high-temperature coatings. These coatings are applied through thermal spraying, plasma spraying, or vacuum coating techniques to enhance the durability and resistance to wear and corrosion of turbine blades, engine components, industrial machinery, and other parts exposed to high temperatures and harsh environments.
8. Hydrogen Storage:
   • Alumina-based materials are being used in the development of metal hydride systems for hydrogen storage in fuel cells and energy storage systems. Aluminum oxide powder plays a key role in these systems by providing a stable medium for hydrogen absorption and desorption, making it an important material for clean energy applications.
9. Biomedical Applications:
   • Alumina ceramics are used in biomedical devices such as dental implants, joint replacements, and surgical tools due to their biocompatibility, strength, and wear resistance. The 22-59 µm aluminum oxide powder is used to create smooth, durable surfaces in medical implants, ensuring high mechanical properties and resistance to wear and corrosion in the body.
10. Paints and Pigments:
    • Alumina powder is used in paints, coatings, and pigments to enhance opacity, durability, and fire resistance. The powder is commonly used in fire-resistant paints, protective coatings, and pigments for construction, automotive, and marine applications, offering superior surface protection and heat resistance.
11. Filtration and Separation:
    • Alumina powder is used in filtration and separation processes. The high surface area of aluminum oxide makes it effective in adsorbing impurities, making it suitable for applications in water purification, oil refining, and chemical separations in industries such as pharmaceuticals, chemicals, and environmental technology.
12. Superconductors:
    • Alumina is also used in the production of high-temperature superconductors. Aluminum oxide is incorporated into ceramic superconducting materials such as yttrium barium copper oxide (YBCO), which are used in MRI and particle accelerators. The fine alumina powder is essential for creating superconducting materials that play a key role in scientific and medical technologies.

Summary of Benefits:

• High Purity: The 99.5%+ purity ensures minimal contamination, making it ideal for high-performance applications in coatings, ceramics, and electronics.
• Particle Size Range (22-59 µm): The 22-59 µm particle size is ideal for medium to coarse applications, such as abrasives, coatings, and ceramics, offering a balance between strength, surface area, and handling properties.
• Spherical and Irregular Shape: The particles promote good flowability, uniform deposition, and packing density, which is essential for processes like powder metallurgy, additive manufacturing, and thermal spraying.
• Versatility: The powder is highly versatile, with applications across abrasives, ceramics, catalysts, electronics, thermal management, and biomedical devices.

Conclusion:

Aluminum Oxide Micron Powder (99.5+, 22-59 µm) is a high-performance material with exceptional properties such as strength, thermal stability, abrasion resistance, and electrical insulation. Its medium particle size, high purity, and versatility make it ideal for a wide range of applications in industries such as abrasives, ceramics, catalysts, electronics, thermal management, and biomedical devices. The powder’s ability to perform under demanding conditions ensures its importance in creating durable, high-performance components for various industrial applications.