What is Spherical Al2O3 Powder?

Author : Trunnano

Update time : 2022-03-11 10:25:17

What is Spherical Al2O3 Powder?
Aluminium oxide is an inorganic substance with the chemical formula Al2O3. It is a high hardness compound with a melting point of 2054°C and a boiling point of 2980°C. It is an ionized crystal that can be ionized at high temperature and is often used in the manufacture of refractory materials.
Industrial alumina is prepared from bauxite (Al2O3·3H2O) and diaspore. For Al2O3 with high purity requirements, it is generally prepared by chemical methods. There are many isomorphous crystals of Al2O3, more than 10 kinds are known, and there are mainly 3 crystal forms, namely α-Al2O3, β-Al2O3, γ-Al2O3. Among them, the structure is different and the properties are also different, and it is almost completely converted into α-Al2O3 at high temperatures above 1300°C.
The spherical alumina produced by the high-temperature melt spraying method has the characteristics of high sphericity and high content of α-phase alumina, and shows superior performance when used as a filler for rubber, plastics and ceramic raw materials.
The main features of Spherical Al2O3 Powder
1. High filling density: With its large particle diameter and broad particle size distribution, 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 production of compounds with higher thermal conductivity and higher heat dissipation rate compared to crystalline silica.
3. Low abrasivity:
Due to its Spherical shape, less-wearing of kneading machines, forming machines and dies.

Aluminum Oxide Properties
Other Names	alumina, aluminum (III) oxide, aluminum trioxide, Al2O3 powder
CAS No.	1344-28-1
Compound Formula	Al2O3
Molecular Weight	101.96
Appearance	White Powder
Melting Point	2072 °C
Boiling Point	2977 °C
Density	3.95 g/cm3
Solubility in H2O	N/A
Exact Mass	101.948 g/mol

Spherical Aluminum Oxide Al2O3 Powder CAS 1344-28-1

The applications of Spherical Al2O3 Powder
1. Used as a ceramic material Spherical micropowder has good pressing and sintering properties, which is extremely beneficial for the production of high-quality ceramic products.
2. Used as grinding and polishing material Using spherical alumina as polishing abrasive can avoid scratches.
3. Used in the petrochemical industry In the petrochemical industry, higher and higher requirements are placed on the pore size distribution and pore structure of the alumina carrier. The spherical alumina powder can be adjusted by adjusting the particle size configuration to control the formed catalyst carrier particles. pore size and its distribution.
4. The thermally conductive composite spherical alumina powder has a small thickening range for polymer materials and good filling performance, and can not only be used to prepare new composite materials with high thermal conductivity (such as thermally conductive gaskets, thermally conductive silicone grease, thermally conductive potting) Glue, thermally conductive plastics, etc.), and can also be used to make artificial teeth and bones.
The main supplier of Spherical Al2O3 Powder
Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional oxide powder supplier with over 12 years of experience in chemical products research and development. We accept payment via Credit Card, T/T, West Union, and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
If you are looking for high-quality boron carbide powder, please feel free to contact us and send an inquiry.

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