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Spherical Aluminum Oxide
Produced by high-temperature melting spraying, the aluminum oxide has high sphericity with a large amount of a-phase. Aluminum oxide that is spherical performs better when used in rubber, ceramics and plastics.
Spherical aluminum oxide properties
1. High filling
Aluminum oxide is spherical and has a large particle size distribution. It can fill rubber with high density.
2. High thermal conductivity
A mixture with good heat dissipation and high thermal conductivity can be achieved by filling spherical Al2O3 with high density.
3. Low abrasion
Due to the spherical nature of spherical Aluminum Oxide, the abrasion caused by equipment such as kneaders or molding machines can be greatly reduced. This will extend the service life.
Spherical aluminum oxide applications
1. Ceramic additives
A certain amount of Nano-spherical Aluminum Oxide Powder can effectively solve ceramics’ shortcomings due to their low temperature brittleness, and can be converted into low-temperature spherical Aluminium oxide Ceramics. Adding 5.0% of Nano-spherical Aluminum oxide Powder to the body of conventional ceramics can increase the toughness of this ceramic and lower the sintering temperatures of the ceramic.
2. Composite materials
Nano-spherical Al2O3 Powder can be used for the manufacture of new composite ceramic materials that have special properties. It can also be made into artificial teeth or bones.
3. Surface protective coating
Spraying spherical aluminum oxide particles on metals, polymers, etc. can improve hardness, wear resistance, fire resistance, corrosion resistance. It can also be used to protect surfaces such as knives, machinery and chemical pipelines.
4. Materials that are optically clear
Aluminum oxide powder, which is nano-sized and spherical in shape, has the ability to absorb light with wavelengths below 250nm. When a few spherical particles of aluminum oxide are added to rare earth pigments, they can absorb nano-ultraviolet light using the blue shift effect. It will not affect the brightness of the phosphor.
It is possible to combine rare-earth fluorescent materials with nano-spherical Aluminum oxide as a material for high-pressure sodium lamp. Not only will this reduce the price but it will also increase the lifespan of the lamp.
5. Semiconductor materials
This nano-scale aluminum oxide powder can be used to make temperature sensors that are extremely sensitive to moisture. It is also a substrate material for large-scale integrated electronics.
6. Catalysts and their carriers
Al2O3 powder spheres have a large surface area and are covered with mismatch bonds. The sheet will contain a large number of pores with a porosity range between 30-40%. These can be converted into porous membrane filters. This produces catalysts and carriers that are several times more efficient than similar products.
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Aluminium oxide powder, spherical
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