Aluminum Oxide Micron Powder ( Al2O3, 99.5+%, 5-25 µm )

Technical Description:

Aluminum Oxide Micron Powder (Al₂O₃, 99.5+%, 5-25 µm) is a high-purity powder composed of aluminum oxide (Al₂O₃), with a purity of 99.5% or higher. The powder has a particle size range of 5-25 micrometers (µm), placing it in the fine to medium-sized category. This size range strikes a balance between surface area, flowability, and handling properties, making it suitable for a variety of industrial applications that require high strength, wear resistance, and thermal stability.

• Chemical Composition:
  • Aluminum Oxide (Al₂O₃) content: 99.5%+, ensuring high purity with minimal contaminants. This level of purity is essential for demanding applications in advanced ceramics, catalysts, and electronics, where consistency and material quality are critical.
• Particle Size:
  • The powder has a particle size range of 5-25 µm, which provides a moderate surface area while still maintaining good flowability and density. This size range is commonly used in applications that require a balance of strength, abrasion resistance, and thermal stability.
• Shape:
  • The powder particles are typically irregular in shape, though some may exhibit slight spherical characteristics depending on the manufacturing process. Irregularly shaped particles can offer better interlocking during sintering, improving the mechanical strength of the final product.
• Purity:
  • With 99.5%+ purity, the powder ensures minimal contamination, making it suitable for high-performance applications in industries such as aerospace, electronics, ceramics, and catalysis.

Applications:

1. Abrasives:
   • Aluminum oxide is a well-known material for abrasives due to its high hardness and durability. The 5-25 µm powder is used in the production of grinding wheels, polishing compounds, sandpapers, and blasting media. The powder’s fine-to-medium size is perfect for precision grinding, polishing, and finishing applications in industries such as metalworking, ceramic finishing, and electronics.
2. Advanced Ceramics:
   • Alumina is widely used in the production of advanced ceramics for high-performance applications. The fine powder is used to create insulating materials, ceramic coatings, sintered components, and crucibles. The 5-25 µm alumina powder helps to create high-strength, durable parts for aerospace, automotive, electrical and chemical processing industries, where high temperature and wear resistance are crucial.
3. Additive Manufacturing (3D Printing):
   • Aluminum oxide powder with a particle size of 5-25 µm is suitable for additive manufacturing techniques like Selective Laser Sintering (SLS) and Direct Metal Laser Sintering (DMLS). The alumina powder is used to create complex parts with high thermal resistance, strength, and wear resistance in industries such as aerospace, automotive, and medical applications.
4. Catalysts and Catalyst Supports:
   • Alumina is frequently used as a catalyst support in chemical processes, especially in the petrochemical, pharmaceutical, and industrial chemical sectors. The fine alumina powder offers a high surface area for the deposition of active catalytic sites, making it essential for processes like hydrogenation, alkylation, and reforming reactions.
5. Thermal Management:
   • Alumina has excellent thermal conductivity and thermal stability, which makes it ideal for thermal management applications. Aluminum oxide powder is used in heat sinks, thermal interface materials (TIMs), and thermal coatings for electronics, LED lighting, and power devices. The fine powder helps to dissipate heat efficiently from sensitive electronic components and power systems.
6. Electrical Insulation:
   • Aluminum oxide is an excellent electrical insulator and is commonly used in electrical components like substrates, insulating coatings, and microelectronics. The 5-25 µm aluminum oxide powder is ideal for producing insulating layers and substrates in high-voltage and high-frequency applications, such as in power electronics, sensors, and circuit boards.
7. Coatings and Surface Treatments:
   • Alumina powder is widely used in the production of abrasive coatings, wear-resistant coatings, and corrosion-resistant coatings. The powder is applied via thermal spraying or plasma spray coating to create durable coatings for turbine blades, gas turbines, and engine components exposed to high temperatures and harsh environments.
8. Hydrogen Storage:
   • Alumina-based materials are used in the development of metal hydride systems for hydrogen storage in fuel cells and energy storage systems. Aluminum oxide powder is used to enhance the efficiency of these systems by providing a stable medium for hydrogen absorption and desorption.
9. Biomedical Applications:
   • Alumina ceramics are used in biomedical applications such as dental implants, joint replacements, and surgical tools due to their biocompatibility, strength, and wear resistance. The aluminum oxide powder is used to create smooth, durable, and long-lasting surfaces for medical implants, offering high mechanical properties and resistance to wear and corrosion in the body.
10. Paints and Pigments:
    • Aluminum oxide is used in paints and pigments for applications that require increased opacity, fire resistance, and corrosion resistance. The fine powder is used as a pigment and additive in paints for construction, automotive, and marine applications, enhancing the durability and heat resistance of painted surfaces.
11. Filtration and Separation:
    • Alumina powder is used in filtration and separation applications, such as water purification, air purification, and chemical separations. The high surface area of the aluminum oxide powder makes it effective in adsorbing and removing impurities from liquids or gases, particularly in industrial processes and environmental applications.
12. Superconductors:
    • Alumina is also used in the production of high-temperature superconductors. Aluminum oxide is used in the creation of ceramic superconducting materials such as yttrium barium copper oxide (YBCO), which are used in applications like MRI and particle accelerators. The alumina powder helps create these superconducting materials that are essential for scientific and medical technologies.

Summary of Benefits:

• High Purity: The 99.5%+ purity ensures minimal contamination, making the powder suitable for high-performance applications where material integrity and consistency are crucial.
• Particle Size Range (5-25 µm): The 5-25 µm particle size provides a good balance between surface area and handling properties, making it ideal for sintering, powder metallurgy, and advanced manufacturing processes.
• Spherical and Irregular Shape: The particles promote good flowability, packing density, and uniform deposition during processes like additive manufacturing, powder metallurgy, and coating applications.
• Versatility: The powder is highly versatile, with applications in abrasives, ceramics, catalysts, electronics, thermal management, and biomedical devices.

Conclusion:

Aluminum Oxide Micron Powder (99.5+, 5-25 µm) is a high-performance material with excellent properties such as strength, thermal stability, abrasion resistance, and electrical insulation. Its fine particle size, high purity, and versatile applications make it ideal for a wide range of industrial applications including abrasives, ceramics, catalysts, electronics, thermal management, and biomedical devices. The powder’s consistent quality and ability to perform under demanding conditions ensure its role in producing durable and high-performance components across various industries.