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Alpha-al2o3 Aluminum oxide powder 99.99% Purity
Alpha-alumina (α-Al2O3) powder, commonly known as aluminum oxide powder, is a versatile material with a wide range of applications in industries such as ceramics, refractories, abrasives, catalysts, and more. Here are some typical specifications for alpha-Al2O3 powder
Chemical Composition:
Aluminum oxide (Al2O3): Typically 99% or higher.
Particle Size:
Particle size distribution can vary depending on the specific application requirements.
The average particle size can range from sub-micron to a few microns.
Finer particle size powders offer higher surface area and reactivity.
Color:
Typically white, with a high degree of purity.
Crystal Structure:
Alpha-alumina (α-Al2O3) possesses a hexagonal crystal structure.
Specific Surface Area:
Typically in the range of 2 to 20 m2/g.
Higher surface area powders provide increased reactivity and surface coverage.
Purity:
High-purity alpha-Al2O3 powders are commonly available with minimal impurities.
The purity level is typically 99% or higher.
Bulk Density:
The bulk density of alpha-Al2O3 powder can vary depending on the specific manufacturing process or grade.
Typically ranges from 0.5 to 1.2 g/cm3.
Thermal Stability:
Alpha-Al2O3 powder exhibits excellent thermal stability and high melting point.
Melting point: Approximately 2,072°C (3,762°F).
Hardness:
Alpha-Al2O3 powder is known for its high hardness.
Mohs hardness: Around 9.
Chemical Inertness:
Alpha-Al2O3 powder is chemically inert and does not react with most chemicals.
It is resistant to acids and alkalis.
It is important to note that the exact specifications of alpha-Al2O3 powder can vary among manufacturers and specific grades. Therefore, it is advisable to refer to the product datasheet or consult the supplier for detailed information and specific requirements for your intended application.
1.Luminescent materials: rare earth trichromatic phosphors used as the main raw material long afterglow phosphor, PDP phosphor, LED phosphor;
2.Transparent ceramics: used as fluorescent tubes for high pressure sodium lamp, electrically programmable read-only memory window;
3.Single Crystal: for the manufacture of ruby, sapphire, yttrium aluminum garnet;
4.High strength high alumina ceramic:as the substrate used in the manufacture of integrated circuits, cutting tools and high purity crucible;
5.Abrasive:manufacture the abrasive of glass, metal, semiconductor and plastic;
6.Diaphragm: Application for the manufacture of lithium battery separator coating;
7.Other: as an active coating, adsorbents, catalysts and catalyst supports, vacuum coating, special glass materials, composite materials, resin filler, bio-ceramics etc.
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