High-purity alumina ceramics with Al2O3 content of 99.9%, the sintering temperature is as high as 1650-1990 ° C, transmission wavelength of 1 ~ 6μm.
High-purity alumina ceramics generally can be used to replace platinum crucible:
because of the light transmission and resistance Alkali metal corrosion, high-purity alumina ceramics can be used as sodium lamp tubes;
It can be used as an integrated circuit substrate and high frequency insulation material in the electronics industry.
Alumina ceramic materials with Al2O3 content of 99% can be used to make high temperature crucible, refractory furnace tubes and special wear-resistant materials,
such as ceramic bearings, ceramic seals and water valve sheets;
Alumina ceramic materials with Al2O3 content of 95% are mainly used as corrosion-resistant and wear-resistant parts and insulating parts;
Alumina ceramic materials with Al2O3 content of 85% are often blended with some talc to improve electrical properties and mechanical strength.
They can be sealed with metals such as molybdenum, niobium and tantalum, and some are used as electric vacuum devices.
Alumina ceramics (80% Min.) can also be used as insulation parts.