The properties of spherical-alumina
Ultra-fine, spherical, alumina has many excellent properties, including high resistance to corrosion, high temperatures resistance, high hardness and strength, wear resistance as well as oxidation resistance. It is used widely in metallurgy as well as electronics, national defense and aerospace, nuclear industry, and other areas. High-tech field.
Application of spherical allumina
1. Ceramic additives
Addition of a small amount of nanospherical allumina powder to ceramics can help to solve problems such as low-temperature brittleness or narrow application range. These ceramics can then be converted into low-temperature plastics spherical ceramics.
2. Composite materials
Nano-spherical powdered alumina can be used to create new composite ceramic materials with unique properties. It can also be used to make artificial tooth and bone.
3. Coatings to protect the surface
Spherical alumina powder particles can be sprayed on metals, polymers, etc. to improve hardness, corrosion resistance wear resistance and fire resistance. They can also be used as surface protection for machinery, knives, chemical pipelines, and other equipment.
4. Optical materials
The absorption of ultraviolet light is strong for nano-sized spherical powders made from alumina spheres. Its wavelength is below 250nm. The blue shift phenomenon of nanoultraviolet absorbtion can be used to absorb the spherical, alumina powder. It does not emit harmful ultraviolet light and does not affect the phosphor’s luminescence. The nano-spherical form of alumina can also be used in high-pressure sodium lamps to create transparent ceramics. Rare-earth phosphors can be added to the lamp’s luminescent material to make it more efficient. It will reduce cost and increase the life expectancy of the luminous lamp.
5. Semiconductor materials
Nano-scale spherical Alumina Powder is very sensitive to humidity. It has an extremely high value in temperature sensors and can be widely used for substrate materials for large-scale integrated Circuits.
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