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What is alumina ceramic?

May 6, 2020

    Alumina ceramic, also known as alumina or aluminum oxide (Al2O3), is a well-known, long-wearing industrial oxide ceramic with high hardness. It is manufactured from bauxite and can be shaped using injection molding, die pressing, isostatic pressing, slip casting, diamond machining, or extrusion. Alumina ceramics have the same sintered crystalline body as sapphire and ruby.


    One of the main uses of alumina ceramic is as an insulation material for electrical components. In other applications, it is used for its exceptional strength and corrosion and wear resistance.


    Alumina ceramics are technical ceramics due to their properties and price to performance ratio. The classification of alumina ceramics is based on their alumina content, which can vary from 70% to 99.9%. The higher the purity of alumina, the stronger is its wear and corrosion resistance.


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