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By Lzh | 07 February 2023 | 0 Comments

Why spherical alumina can be used as luminescent material?

What is spherical alumina?
Spherical alumina is also called sand-like Alumina, α Alumina α In the lattice of type I Alumina, oxygen ions are hexagonal and closely stacked, and AI3+is symmetrically distributed in the octahedral coordination center surrounded by oxygen ions. The lattice energy is large, so the melting and boiling points are very high. It has corrosion resistance, wear resistance, high-temperature resistance, high strength, good insulation, large surface area, high hardness, oxidation resistance, etc. The producers of spherical Alumina are mainly concentrated in Japan, China, South Korea, etc., and the industry concentration is also high. China is the largest production area in the world; in 2018, it accounted for 57.14% of the production share, followed by Japan, which produced 3446 tons of spherical Alumina in 2018, accounting for 30.76%.
Use of spherical alumina
Material of surface protection layer: Spray superfine alumina powder on the surface of plastic, paint, glass, alloy, and metal materials, which can improve the wear resistance, corrosion resistance, stability, and surface strength of the material
Luminous material: spherical alumina powder has high stacking density, which can reduce the scattering of the luminous body, effectively reduce the transmission light loss, and thus improve the screen brightness
Petrochemical industry: alumina is the most widely used carrier in the petrochemical industry.
Preparation of spherical alumina
Sol lotion sol method: Takashi Ogihara et al. hydrolyzed aluminum oxide by using aluminum alcohol. Spherical aluminum oxide powder was prepared through the sol-gel process. The whole hydrolysis system was relatively complex, in which 50% of the octanol dissolved aluminum alcohol was accounted for, 40% of the ethanol solvent was accounted for, and 9% and 1% of the octanol butanol in the dispersed water were, respectively. And propyl cellulose was used as the dispersant to obtain a spherical shape with very good sphericity γ- Alumina powder/The advantage is that the process does not introduce impurity ions/The disadvantage is that the raw material price is high. The resulting powder particle size is small, and the distribution is narrow.
Price of spherical alumina
Spherical alumina particle size and purity will affect the product's price, and the purchase volume can also affect the cost of spherical alumina. A large amount of large amount will be lower. The price of spherical alumina can be found on our company's official website.
Spherical alumina supplier
Luoyang Tongrun Nano Technology Co. Ltd.  (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including spherical alumina, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective spherical alumina, you are welcome to contact us or inquire at any time.

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