Advantages of alumina ceramics

Advantages of alumina ceramics
(1) High mechanical strength, the Flexural strength of sintered alumina ceramic products can reach 250MPa, the strength of hot pressed products can reach 500MPa, and the strength can be maintained to 900 ℃ under high temperature
(2) High resistivity, good electrical insulation performance, room temperature resistivity of 1015 Ω· cm, insulation strength of 15kV/mm
(3) High hardness, Mohs scale hardness is 9
(4) High melting point, corrosion resistance, melting point of 2050 ℃, good resistance to corrosion of molten metals such as Be, Sr, Ni, Al, V, Ta, Mn, Fe, Co, etc. It also has high resistance to the erosion of NaOH, glass, and slag. It does not interact with Si, P, Sb, Bi in an inert atmosphere.
(5) The chemical stability is excellent, and many complex sulfides, Phosphide, Arsenide, chlorides, nitrides, bromides, Iodide, oxides, as well as sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid do not react with aluminum oxide.
(6) Optical properties that can be made into transparent materials (transparent Al2O3 ceramics)
(7) Ionic conductivity