Spherical Aluminum Oxide Al2O3 Powder CAS 1344-28-1

Spherical Aluminum Oxide has excellent mechanical properties and is often used as a grinding medium in various mills. Spherical Alumina has high compressive strength and wear resistance. Spherical al2o3 has a high filling property, and its particles have a high Spherical rate and wide particle size distribution. It can fill rubber and plastic with high density to obtain a mixture with low viscosity and good fluidity.

Secondly, the spherical oxidation furnace also has high thermal conductivity. Because it can be filled with high density, compared with crystalline silicon powder, a mixture with high thermal conductivity and good heat dissipation can be obtained.

Is aluminum oxide safe for the skin?

Although aluminum oxide is certainly abrasive, it is also a skin irritant with a questionable safety record. In any case, it is unquestionably unpleasant. Aluminum oxide crystals inflame and irritate the skin, leaving it red, whereas baking soda crystals naturally calm, tone, and soothe the skin.

Is aluminum oxide safe to breathe?

Aluminum oxides rank amongst the less toxic substances and only exhibit toxic effects in high concentrations. Inhalation of aluminum oxide dust should be avoided, but there is no evidence of significant harm to the lungs associated with the inhalation of aluminum oxide dust.

Spherical Aluminum Oxide also has low wear resistance. Because of its spherical appearance, the wear of the mixer, molding machine and mold and other equipment is greatly reduced, and the service life of the equipment can be extended.

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Performance of Spherical Aluminum Oxide Al2O3 Powder：

1. High filling density: With its large particle diameter and broad particle size distribution, it realizes high-density filling for rubber and plastic and produces compounds with low viscosity and good fluidity.

2. High thermal conductivity: High filling density enables the production of compounds with higher thermal conductivity and heat dissipation rate than crystalline silica.

3. Low abrasivity: Due to its Spherical shape, less wearing of kneading machines, forming machines, and dies.

Chemical precipitation method: Chemical precipitation is common for preparing spherical alumina. The principle of the method is to add a precipitating agent to the solution containing aluminum ions so that aluminum ions precipitate out in the form of aluminum hydroxide or aluminum carbonate, and then through filtration, washing, drying, and other processes to obtain spherical aluminum oxide products. Among them, the precipitating agents are ammonia, sodium hydroxide, sodium carbonate, and salts containing other metal ions, such as magnesium chloride, zinc sulfate, etc. The particle size and morphology of spherical alumina can be adjusted by controlling the type and concentration of the precipitator.

Combustion method: The combustion method is another common method for preparing spherical alumina. The principle of this method is to mix aluminum powder with fuel and heat to high temperatures so that the aluminum powder burns and releases a lot of energy while the resulting alumina is spherical. The particle size and shape of spherical alumina can be adjusted by controlling the combustion temperature and atmosphere. High-temperature molten salt reaction or high-temperature molten salt extraction method is needed to obtain high-purity spherical alumina.

Physical vapor deposition method: Physical vapor deposition is a method for preparing high-performance spherical alumina. The principle of the method is to heat the aluminum source gas to a high temperature employing evaporation, sputtering, ion plating, etc. so that the aluminum atoms are vaporized in the reaction chamber and form high-purity alumina particles. The particle size and shape of spherical alumina can be adjusted by controlling the temperature and atmosphere of the reaction chamber. Multiple deposition and heat treatment processes are required to obtain high purity and density of spherical alumina.

Template method: The template method is a method for preparing the ordered spherical alumina. The principle of the method is to use surfactants or colloidal templates to confine aluminum ions in a certain region so that aluminum ions are in the region of hydrolysis and condensation reaction, forming spherical alumina particles. The particle size and morphology can be adjusted by controlling the template's type, concentration, and action time, and the orderly spherical alumina array can be prepared.

Applications of Spherical Aluminum Oxide Al2O3 Powder ：

Catalyst and support: Spherical alumina has the advantages of high specific surface area, high activity, and high stability and is widely used in preparing catalysts and their support. In the field of catalysts, spherical alumina can be used as a catalyst carrier to improve the catalyst's dispersion, stability, and activity, thereby improving the catalytic effect. For example, spherical alumina can be used as the carrier of automobile exhaust catalysts to improve the decomposition ability of the catalyst to harmful substances and reduce exhaust emissions.

Battery material: Spherical alumina is widely used in preparing battery materials because of its high conductivity and lithium ion diffusion. In the field of battery materials, spherical alumina can be used as an electrode material for lithium-ion batteries to improve the electrochemical performance and life of the electrodes. For example, spherical alumina can be used as a positive electrode material for lithium-ion batteries, improving the battery's energy density and cycle life.

Ceramic material: Spherical alumina has the advantages of high melting point, hardness, high wear resistance, etc., and is widely used in the preparation of ceramic materials. In ceramic materials, spherical alumina may be utilized as a strengthening component of ceramic materials to enhance their mechanical and wear-resistant properties of products. For example, spherical alumina can be added to ceramic materials to improve ceramic tools' hardness, wear resistance, and service life.

Optical materials: Spherical alumina has the advantages of high light transmittance, high refractive index, and low scattering and is widely used to prepare optical materials. In optical materials, spherical alumina can be used as a raw material for optical lenses, prisms, and other products to improve the performance and stability of optical materials. For example, Spherical alumina can be utilized as a lens component for optical lenses to improve the image quality and transmittance of the lens.

Electronic Materials: Spherical alumina has good electrical conductivity and thermal stability and is widely used to prepare electronic materials. In electronic materials, spherical alumina can be used as a raw material for electronic components to improve the performance and stability of electronic equipment. For example, spherical alumina can be used as a resistor material for integrated circuits to improve the accuracy and stability of the resistor.

Wear-resistant coating: Spherical alumina has the advantages of high hardness, high wear resistance, etc., and can be used as the raw material for wear-resistant coating. In the field of wear-resistant coating, Spherical alumina can be utilized to reinforce the coating to increase the strength as well as wear resistance of the coating. For example, spherical alumina can be added to the coating material to improve the coating tool's hardness, wear resistance, and service life.

Storage Condition of Spherical Aluminum Oxide Al2O3 Powder:
Spherical Aluminum Oxide Al2O3 Powder should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition, should avoid the heavy pressure, according to ordinary goods transportation.

Packing & Shipping of Spherical Aluminum Oxide Al2O3 Powder:
It is packed in double plastic bags inside, which can be filled with argon in a vacuum; it can be vacuumed and filled with argon for protection.
Spherical Aluminum Oxide Al2O3 Powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Spherical Aluminum Oxide Al2O3 Powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.