Spherical Al2O3 powder characteristics overview

The chemical formula of alumina is Al2O3. It is a white powdery, high-hardness compound with a melting point of 2054 degrees and a boiling point of 2980 degrees. It is an ionic crystal that can be ionized at high temperatures and is often used in refractory materials. Alumina has the characteristics of porosity, high dispersion, insulation, stable crystal phase, high hardness, and good dimensional stability.

Spherical Al2O3 powder is a kind of alumina powder material made from random high-purity alumina as raw material, melted and sprayed and calcined at high temperature, and then sieved and purified. The product has high thermal conductivity, high insulation, high hardness, high temperature resistance, corrosion resistance, wear resistance and other properties. It also has unique and excellent characteristics such as good fluidity, low oil absorption, high spheroidization, high alpha phase content, small specific surface area, and controllable particle size distribution.

Spherical Al2O3 powder characteristics

●High filling

High spheroidization rate, controllable particle size distribution, high-density filling of silica gel and epoxy resin to obtain a mixture with low viscosity and good fluidity;

●High thermal conductivity

Due to its spherical appearance, it can realize multi-directional heat transfer, has good dispersion in the system, and the thermally conductive product has high thermal conductivity;

●Low wear

Due to its spherical appearance, it reduces the abrasion of mixers, molding machines and other equipment and prolongs the service life of the equipment.

Spherical alumina Al2O3 powder overview

Alumina is an inorganic substance with a chemical formula of Al2O3. It is a high-hardness compound, also known as bauxite in mining, ceramics, and materials science. It is a white solid, insoluble in water, odorless and tasteless, and very hard in nature. Easy to absorb moisture but not deliquescence (no moisture absorption after burning). Alumina is a typical amphoteric oxide (corundum is alpha-shaped and belongs to the most densely packed hexagonal compound. It is an inert compound, slightly soluble in acids and alkalis, and resistant to corrosion. [1] Soluble in inorganic acid and alkali solutions, But it is almost insoluble in water and non-polar organic solvents; relative density (d204) 4.0; melting point 2050°C, boiling point 2980°C, ionized ionic crystals at high temperature, often used to make refractory materials.

Industrial alumina is prepared from bauxite (alumina·3H2O) and diaspore.For alumina has high purity requirements, it is usually prepared by chemical methods.There are many different crystalline aluminas. There are more than 10 known crystals. There are three main crystal types, namely α-Al2O3, β-Al2O3, and γ-Al2O3. Among them, the structure is different and the nature is different. It almost completely transforms into α-Al2O3 at a high temperature above 1300℃. .

Spherical alumina Al2O3 powder features: high filling density: large particle size, wide particle size distribution, high density filling of rubber and plastics can be realized, low viscosity, good fluidity rubber compound; high thermal conductivity: and crystallization Compared with silicon dioxide, the high bulk density can make the thermal conductivity and heat dissipation rate of the composite higher;

Low wear resistance: due to its spherical shape, the kneader, molding machine and mold wear less.

Alumina Al2O3 is used to smelt high-quality bauxite to produce brown corundum, while high-quality aluminate is used to produce powder corundum and white corundum. Their natural crystal structure makes them hard and strong. At the same time, they are often used as raw materials for bonded abrasive tools and coated abrasive tools. Alumina Al2O3 can be recycled many times, and the number of cycles depends on the grade of material and the specific process. Most standard sandblasting equipment can be used.

Spherical alumina Al2O3 powder should be stored in a dry, cool and sealed environment, and should not be exposed to the air. In addition, avoid heavy pressure and transport as ordinary goods. The inside is packed in double-layer plastic bags, which can be filled with argon under vacuum; it can be filled with argon under vacuum for protection. Vacuum packaging, 100G, 500G or 1KG/bag, 25kg/drum, or according to your requirements.

Spherical alumina Al2O3 powder application

1. Paint: enamel paint, wear-resistant paint, plasma spraying.

2. Ceramics: transparent ceramics, bio-ceramics, alumina ceramics.

3. Petrochemical products: high-efficiency catalysts, catalyst carriers, automotive exhaust purification materials.

4. Polishing materials: sub-micron/nano-level abrasive materials, monocrystalline silicon wafer polishing, precision polishing materials.

5. Illumination: Long afterglow phosphor raw material and rare earth tricolor phosphor raw material high pressure sodium tube, LED lamp, etc.

6. Electronic products: integrated circuit substrates, single crystal materials, far infrared materials.

7. Cosmetics: cosmetic fillers.

8. Inorganic membrane materials.

Alumina Al2O3 is suitable for a variety of wet and dry treatment processes. It can finely grind the rough surface of any workpiece and is one of the most economical abrasives. The hardness of this sharp water chestnut synthetic abrasive is second only to diamond, and it is especially suitable for occasions with strict requirements for iron pollution. Used for the roughest cutting, it can also be made into a pebble shape to process precision-sized workpieces to achieve extremely low roughness. Due to its high density, sharpness, and rhombohedral structure, it is one of the fastest cutting abrasives.

Price of spherical alumina Al2O3 powder

The price of spherical alumina Al2O3 powder will vary randomly with the production cost, transportation cost, international situation, exchange rate, and the supply and demand of the spherical alumina Al2O3 powder market. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for spherical alumina Al2O3 powder, please feel free to send an inquiry to get the latest price of spherical alumina Al2O3 powder.

Supplier of spherical alumina Al2O3 powder

As a global supplier of spherical alumina Al2O3 powder, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including boron carbide, aluminum carbide, titanium carbide, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.