Aluminum oxide which has the chemical formula Al2O3, is commonly called alkoxide, aloxite, alundum, and alumina. The main function of aluminum oxide is actually used for the aluminum manufacturing process. However, over time, the function of aluminum oxide is increasing, including: as a filler in the plastic industry, raw material for the glass industry, catalysts in various industries such as the alcohol industry, and the sulfur industry. In addition, currently aluminum oxide has an important role in the gas purification process from water content.
Aluminum oxide has the following properties:
- Molecular formula: Al 2 O 3
- Molecular weight: 101.96 gr/mol
- Appearance: Highly hygroscopic white solid
- Smell: No smell
- Density: 3.95-4.1 gr/cm 3
- Melting point: 2072 °C
- Boiling Point: 2977°C
- Solubility in water: Soluble
- Solubility in other solvents: Soluble in diethyl ether; practically insoluble in ethanol
- The refractive index ( n D ): ω n = 1.768 to 1.772; n ε = 1.760 to 1.763; Birefringens 0.008
- Structure: Trigonal, hR30, Space group = R-3c, Number 167; Coordination geometry, octagon
- Standard enthalpy of formation, f H o 298 : -1675,7 KJ mol -1
- Standard molar entropy, S 298 o : 50.92 J mol -1 K -1
- Flash point: Not lit
White Aluminum Oxide is a sandblasting medium often used on soft-coated objects. Many people prefer it for usage on surfaces that cannot be exposed to other types of metal oxides, such as brown aluminum oxide. In addition, it is often used for metal microdermabrasion.
Because of its sharpness, hardness, and stoutness, white aluminum oxide may be recycled several times as a blasting abrasive media.
While Aluminum oxide has a broad range of applications, it is most often used in blast finishing and surface preparation. Because it is tougher than other typical blasting materials, it can cut the toughest metals in a shorter time and at a lower cost.
What Are The Applications of White Aluminum?
Most of the aluminum oxide generated is utilized to create aluminum metal such as white aluminum St. Lucie-located, and in other areas. In most cases, oxygen catalyzes corrosion when it reacts with aluminum. However, a protective layer arises, preventing further oxidation.
This increases the material’s strength and makes it less prone to degradation.
Uses in Medical Industry
Aluminum is used to make dental crowns, prosthetic tissue, tissue reinforcements, and bionic implants, among others. In the laboratory, aluminum oxide is used in furnaces, crucibles, and many others.
Uses in the Military
Aluminum oxide’s strength and lightweight help enhance body armor, such as breastplates and vehicle and aircraft armor. Aluminum oxide is also utilized in bulletproof windows.
Uses in Electronics
Aluminum oxide is used to produce high-temperature furnace insulation and electrical insulators due to its outstanding thermal resistance qualities. Alumina films play an important role in the semiconductor sector as well.
Uses in the Jewelry Industry
The production of rubies and sapphires depends on the presence of aluminum oxide. It is known as corundum in its crystalline form, and it is the building block of these jewels. Chromium impurities give rubies their deep red color, whereas traces of iron and titanium give sapphires their variety of colors.