Alumina ceramic tube
Aluminum oxide ceramics, silicon nitride ceramics, zirconia ceramics
Alumina ceramics are industrial ceramics with high hardness and can only be processed by diamond grinding. It is made from bauxite and can be processed using methods such as injection molding, pressing, isostatic pressing, slip casting, etc. Products made from alumina, among others, its resistance to wear, chemical, corrosion, corrosion and high temperature and bioerosion, making them suitable for use in medical implants. Alumina ceramics are classified based on their alumina content, which can vary from 70% to 99.9%. The higher the purity of alumina, the higher its wear and corrosion resistance.
Alumina ceramics are made from a white granular material similar to salt or a very fine thick powder. The three general types of alumina are hydrated, calcined and chimeric. Each type has various grades.
The alumina type varies according to the amount of soda (Na2O), iron (Fe2O3) and silicon dioxide (SiO2) added, the finished ceramics contain the chemical purity of the alumina and the nature of the additives used in the production process.
Calcination: To produce calcined alumina, the alumina is heated to 1050°C or 1900°F. Ultra-high temperature heating removes all chemical impurities and water, 99.99% pure, with a Moher hardness scale of 9, which is just below diamond (Mohers score of 10).
Hydration: Aluminum oxide hydrate, or aluminum oxide hydroxide, is used as a glaze because of its ability to maintain paste paste and adhesive qualities of the suspension.
Chimera: Flaky alumina is created by heating alumina to 1650°C or 3000°F. It has high heat, excellent heat temperature, strength and volume stability. It is formed from sintered balls of calcined alumina, which are crushed to form
into powder. Flaky alumina has high fire resistance, mechanical strength, wear resistance, chemical purity, dielectric properties and corrosion resistance.