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Oxide Powder

Aluminum Oxide Al2O3 CAS 1344-28-1

Item No.: TR-Al2O3
Aluminum oxide, with the formula of Al2O3, is a highly insoluble thermally stable Aluminum source suitable for glass, optic, and ceramic applications.
Purity: 99.5%
Particle size: 2-10 microns
Aluminum Oxide Properties

Overview of Aluminium Oxide Powder (Al2O3)

The aluminum oxide formula is Al2O3. The aluminum oxide molar mass is 101.96 g/mol.
Al2O3 is an electrical insulator. It has a fairly high thermal conductivity compared to ceramic materials. The most common form of crystalline alumina is called corundum.
Alumina can provide activated, super-activated, acidic, alkaline, and neutral grades and has flash grades, TLC, biomass purification, decolorization, dioxin analysis, PCB removal, pyrogen removal, and biotechnology wide-pore forms. 
Aluminum oxidation is what makes aluminum resistant to corrosion. Aluminium has a high affinity for oxygen. When a new aluminum surface is exposed to air or any other oxidizing agent, it rapidly forms a thin, hard alumina film.
Oxide does not conduct electricity. However, certain oxides of perovskite structures have conductivity in the cathodes of solid oxide fuel cells and oxygen generation systems. They are compounds containing at least one oxygen anion and one metal cation. They are generally insoluble in aqueous solutions (water). They are very stable, so they can be used in ceramic structures, such as aluminum oxide ceramic bowls for producing advanced electronic devices, and lightweight structural components used in aerospace and electrochemical applications, such as fuel cells.
Exhibits ionic conductivity. Metal oxides are basic acid anhydrides that can react with acids and strong reducing agents in redox reactions. Reactive chromatography grade alumina is used in lighting, photographic chromatography, and various chromatographic separation techniques.
Alumina is usually available in most quantities immediately. High purity, sub-micron, and nanopowder forms can be considered. Alumina can also be made into particles, pellets, powders, sputtering targets, tablets, and nanopowders. Provide typical and customized packaging and other research, technical, and safety (MSDS) data.

Performance of Aluminum Oxide Al2O3 Powder

The aluminum oxide chemical formula is Al2O3. It is a high-hardness compound with an aluminum oxide melting point of 2054°C and a boiling point of 2980°C. It is an ion crystal that can be ionized at high temperatures and is commonly used to manufacture refractory materials. It is a white solid insoluble in water, odorless, tasteless, and extremely hard.

Technical Parameter of Aluminum Oxide Powder Al2O3 Powder

testing index unit Tr-D100 Tr-D200
Chemical parameters Al2O3 % ≥99.5 ≥995
Fe ppm ≤8 ≤8
Cr ppm ≤1 ≤2
Mg ppm ≤1 ≤2
Cu ppm ≤1 ≤2
Ti ppm ≤1 ≤2
Na ppm ≤30 ≤30
Si ppm ≤20 ≤20
Ca ppm ≤1 ≤1
size parameter   mesh 325 600
Bulk density g/m3 0.3-0.6 0.3-0.6
Specific surface area m2/g 2-10 10-20

Production Methods of Aluminium Oxide

The bauxite process produces aluminum oxide. The Bayer process is carried out in four steps. First, the bauxite is crushed, washed, and dried, then dissolved with caustic soda at high temperatures. Next, the mixture is filtered to remove impurities called "red mud" and discarded appropriately. The remaining alumina solution is transferred to a high tank called a settler. The hot solution begins to cool in the sedimentation tank, and aluminum hydroxide seeds (very small particles) are added. The aluminum hydroxide seeds stimulate the precipitation of solid aluminum hydroxide crystals. Aluminum hydroxide precipitates at the bottom of the tank and is removed. Finally, all remaining caustic soda in the aluminum hydroxide is washed and heated to remove excess water. After this process, alumina (alumina) appears as a fine white powder. It looks like sugar used in baking, but it is hard enough to scratch the glass plate.

Application of Aluminium Oxide

Most of the alumina produced is used to form aluminum metal. Oxygen usually reacts with metallic aluminum to catalyze corrosion. However, when combined with oxygen to form alumina, it forms a protective coating and prevents further oxidation. This increases the strength and makes the material less prone to deterioration. Alumina is mainly used as analytical reagents, dehydration of organic solvents, adsorbents, organic reaction catalysts, abrasives, polishing agents, raw materials for smelting aluminum, and refractory materials.
Industries that use alumina include:

Medical industry
Due to alumina's hardness, biological inertness, and chemical properties, it is used for hip replacement surgery prostheses, bionic implants, artificial eye substitutes, tissue reinforcement materials, crowns, abutments, bridges, and other dental implants. The preferred material of the bearing. It is also used in laboratory equipment and tools such as crucibles, furnaces, and other laboratory appliances.

Military and protective equipment
The strength and lightweight properties of alumina help to strengthen body armor, such as breastplates and armor for cars and airplanes, which is its largest market. Alumina is also used to synthesize sapphire bulletproof windows and bulletproof systems.

Electrical and electronic industry
Its high melting point, high boiling point, and excellent heat resistance make alumina an ideal material for high-temperature furnace insulators and electrical insulators. Alumina film is also a vital component in the microchip industry. Its other uses include spark plug insulators, micro-electric substrates, and insulating heat sinks.
Brown aluminum oxide blast media is a very good medium because brown aluminum oxide is one of the hardest abrasives. 
Aluminum oxide sandpaper is used for general-purpose grinding paints, wood, and metals.



Company Profile

Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
If you are looking for high-quality Aluminum Oxide Al2O3 Powder, please feel free to contact us or click on the needed products to send an inquiry. 


Storage Condition of Aluminum Oxide Al2O3 Powder

Aluminum Oxide Al2O3 Powder should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition, should avoid the heavy pressure, according to ordinary goods transportation.

Packing & Shipping of Aluminum Oxide Al2O3 Powder

It is packed in double plastic bags inside, which can be filled with argon in a vacuum; it can be vacuumed and filled with argon for protection.
Aluminum Oxide Al2O3 Powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
 Aluminum Oxide Al2O3 Powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.

How to deposit alumina ceramics?
A: Deposition of alumina ceramics can be achieved by a variety of methods, including physical vapor deposition (PVD) and chemical vapor deposition (CVD). Physical vapor deposition uses heating or high-energy beam bombardment under vacuum conditions to vaporize the coating material into atoms, molecules or ions, and deposits a coating on the surface of the substrate through low-pressure gas or plasma. Chemical vapor deposition uses multi-component gases to react chemically on the surface of heated parts to obtain the required coating.
Direct copper plating (DPC) in the thick film process is also a deposition method. The surface of the substrate is metallized through surface deposition processes such as evaporation and magnetron sputtering.
Is aluminum oxide harmful?
A: Aluminum oxide itself is non-toxic, but when it enters the human body, it may undergo chemical changes to produce toxic substances, causing health risks. Long-term inhalation of high concentrations of aluminum oxide particles may cause inflammatory reactions and tissue damage in the lungs. In addition, when aluminum oxide enters the human body through the skin or respiratory tract, it may also cause local irritation or allergic reactions. Therefore, although aluminum oxide itself is non-toxic, it may have adverse effects on the human body under certain conditions or when exposed to large amounts for a long time.
How to clean alumina diamond plates?
A: For cleaning of aluminum oxide diamond plates, generally speaking, you can use mild detergent and soft cloth to wipe, avoid using too harsh chemical cleaners or scratching with hard objects to avoid damaging the surface. Specific cleaning methods may vary depending on product characteristics and usage environment.
What is the strength comparison between aluminum and alumina?
A: Aluminum oxide is a ceramic material with very high hardness and is one of the super-hard materials, with a hardness value between 9 and 9.5. Aluminum is a typical metal material with a relatively low hardness, generally between 2.5 and 3. Therefore, in terms of hardness, alumina is stronger than aluminum.
How to remove aluminum oxide layer?
A: The methods for removing the aluminum oxide layer mainly include mechanical removal and chemical removal. Mechanical removal uses mechanical force to scrape or grind away the aluminum oxide layer, but it may easily cause damage to the aluminum surface. The chemical removal rule is to remove the aluminum oxide layer through chemical reaction, but care must be taken to select appropriate chemical reagents to avoid damage to the aluminum matrix.

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

Aluminum Oxide Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information NONH
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