What is high purity alumina?

High purity alumina (HPA) refers to aluminum oxide (Al₂O₃) with a purity level of 99.5% or higher. It is produced through specialized processes to ensure minimal contamination from other elements or compounds. Here are the key characteristics and applications of high purity alumina:

Key Characteristics

• High Purity: Contains 99.5% to 99.99% aluminum oxide, making it ideal for applications requiring stringent purity standards.
• Excellent Mechanical Properties: Offers high hardness and strength, making it suitable for demanding applications.
• Thermal Stability: Capable of withstanding high temperatures without degrading.
• Chemical Resistance: Resistant to most chemicals, enhancing its durability in various environments.
• Electrical Insulation: Excellent electrical insulating properties, making it valuable in electronic applications.

Applications

• Electronics: Used in substrates and components for semiconductor devices and LEDs.
• Biomedical: Employed in dental and orthopedic implants due to its biocompatibility.
• Industrial: Utilized in high-performance ceramics, abrasives, and refractory materials.
• Catalysts: Serves as a support material in catalytic processes.