Aluminum Oxide (Al2O3) Micron Powder
Purity: 99.95+%, Size: 50–100 µm
Alumina is one of the most cost-effective and widely used materials within the family of engineering ceramics. The raw materials used to produce this ceramic are readily available and reasonably priced, offering excellent value for manufactured alumina components. With its strong combination of properties and favorable cost performance, it is no surprise that fine-grain technical-grade alumina is used across a broad range of applications.
Al2O3 is a hard material with strong wear resistance. It maintains outstanding dielectric properties from DC through GHz frequencies. Al2O3 also provides high resistance to strong acids and alkalis at elevated temperatures. In addition, Al2O3 offers good thermal conductivity and supports precise size and shape fabrication. It is both strong and stiff. Al2O3 purity can range from 94 percent—commonly used for easily metallizable compositions—to 99.8 percent for the most demanding high-temperature environments.
Aluminum oxide, often referred to as alumina, possesses strong ionic interatomic bonding, which contributes to its desirable material characteristics. Al2O3 can exist in several crystalline phases, all of which revert to the most stable hexagonal alpha phase at high temperatures. This phase is particularly important for structural applications.
Alpha-phase alumina is the strongest and stiffest among oxide ceramics. Its hardness, excellent dielectric behavior, high refractoriness, and strong thermal performance make it the preferred material for a wide range of uses. High-purity alumina is suitable for both oxidizing and reducing atmospheres up to 1925 °C.
