Aluminum Oxide Micron Powder ( Al2O3, 99.5+%, 1-10 μm )

Technical Description:

Aluminum Oxide Micron Powder (Al₂O₃, 99.5+%, 1-10 μm) is a high-purity powder made of aluminum oxide (Al₂O₃) with a purity of 99.5% or higher. The powder has an average particle size range of 1-10 micrometers (μm), making it a fine to medium-sized powder with a high surface area and suitable for a variety of industrial applications. Aluminum oxide, commonly known as alumina, is a versatile material used in many industries for its excellent properties such as high hardness, thermal stability, and electrical insulation.

• Chemical Composition:
  • Aluminum Oxide (Al₂O₃) content: 99.5+%, ensuring that the powder is primarily composed of high-purity alumina with minimal contamination. This level of purity is essential for applications requiring precise material performance, such as in electronics, coatings, and advanced ceramics.
• Particle Size:
  • The powder has a particle size range of 1-10 μm, which provides a good balance between high surface area and ease of handling. This size range is ideal for applications such as sintering, abrasive materials, and ceramic manufacturing.
• Shape:
  • The powder particles are typically irregular in shape, though they may exhibit some degree of spherical characteristics depending on the production process. The irregular shape can be beneficial for sintering or interlocking in applications where densification or enhanced material properties are required.
• Purity:
  • With 99.5% or higher purity, the powder is suitable for high-performance applications where the presence of impurities could significantly affect the material’s mechanical, thermal, or electrical properties.

Applications:

1. Abrasives:
   • Aluminum oxide is one of the most commonly used materials in the manufacture of abrasives, including sandpapers, grinding wheels, and polishing compounds. The 1-10 μm aluminum oxide powder is ideal for precision polishing and grinding applications, where its hardness and ability to cut through tougher materials are crucial.
2. Ceramics and Refractories:
   • Alumina powder is widely used in the production of advanced ceramics and refractory materials. The fine powder is used to make ceramic components such as insulating parts, kiln linings, and high-temperature crucibles that can withstand extreme conditions without degrading. The 1-10 μm powder helps achieve high density and uniformity in sintered ceramic parts.
3. Electrical Insulation:
   • Aluminum oxide is an excellent electrical insulator, and the fine powder is often used to create insulating coatings for electronic components and substrates for semiconductors. Alumina’s high dielectric strength makes it suitable for use in components where electrical insulation is critical, such as in high-voltage applications.
4. Thermal Management:
   • Alumina has excellent thermal conductivity and thermal stability, making it an ideal material for use in thermal management applications. The aluminum oxide powder is used in the production of heat sinks, thermal interface materials (TIMs), and thermal barriers in electronics, power devices, and automotive components.
5. Additive Manufacturing (3D Printing):
   • Aluminum oxide powder is used in additive manufacturing processes such as Selective Laser Sintering (SLS) and Direct Metal Laser Sintering (DMLS). The 1-10 μm powder provides the ability to print high-precision components with high strength and wear resistance, making it suitable for industries like aerospace, automotive, and medical.
6. Catalysts and Catalyst Supports:
   • Alumina is commonly used as a catalyst support in chemical reactions, particularly in the petrochemical and pharmaceutical industries. The fine aluminum oxide powder provides a large surface area for the deposition of active catalytic materials, which is essential for enhancing the reaction efficiency in processes such as hydrogenation, alkylation, and reforming.
7. Optical Applications:
   • Aluminum oxide is used in optical coatings and lenses due to its excellent transparency in the ultraviolet (UV) to infrared (IR) range and high durability. The fine alumina powder is used to create abrasive coatings for optical instruments, helping to improve their wear resistance and performance.
8. Hydrogen Storage:
   • Alumina-based materials are being researched for use in hydrogen storage systems. Aluminum oxide powder can be utilized in the creation of hydride materials that can store hydrogen efficiently for applications such as fuel cells and renewable energy systems.
9. Biomedical Applications:
   • Alumina is increasingly being used in the biomedical field, particularly in the production of biocompatible implants. Alumina ceramics are used in joint replacements, dental implants, and surgical tools due to their high strength, resistance to wear, and biological compatibility. The fine aluminum oxide powder is used to create smooth, durable, and wear-resistant surfaces in implants.
10. Paints and Pigments:
    • Aluminum oxide is used in the paint and pigment industries as a white pigment and opacifier. The fine powder is incorporated into paints and coatings to enhance their opacity, durability, and resistance to abrasion. It is also used in fire retardant paints and coatings for high-temperature applications.
11. Filtration and Separation:
    • Alumina powder is used in the manufacture of filter materials and adsorbents. Aluminum oxide is used in water filtration systems and oil refining processes, where its high surface area and ability to adsorb impurities are beneficial.
12. Metal Matrix Composites (MMC):
    • Alumina powder is used in the development of metal matrix composites (MMCs). Aluminum oxide is incorporated into metal alloys to enhance the wear resistance, thermal conductivity, and strength of the metal. These composites are used in high-performance applications such as automotive engine components and aerospace materials.

Summary of Benefits:

• High Purity: The 99.5% purity ensures minimal contamination, making the powder suitable for high-precision applications in electronics, medical devices, and advanced ceramics.
• Fine Particle Size (1-10 µm): The 1-10 µm particle size provides a high surface area, which is beneficial for sintering, catalysts, and coatings, while still offering good flowability for manufacturing processes.
• Spherical Shape: The spherical particles enhance flowability, packing density, and uniformity, which is essential for processes like additive manufacturing, powder metallurgy, and thermal spraying.
• Versatility: The powder is ideal for a wide range of applications, including abrasives, ceramics, catalysts, electronics, optics, and hydrogen storage, showcasing its broad utility across industries.

Conclusion:

Aluminum Oxide Micron Powder (99.5%, 1-10 μm) is a versatile material known for its excellent properties such as hardness, thermal stability, electrical insulation, and corrosion resistance. Its fine particle size and high purity make it suitable for a variety of advanced applications, including abrasive materials, ceramic components, thermal management, catalysis, and biomedical devices. The powder’s ability to enhance the performance of materials in demanding environments ensures its continued use in industries requiring high-performance components and coatings.