Alumina ceramics is a kind of ceramic material called alumina (Al2O3) as the main body, which is used in industry
Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. It should be noted that ultrasonic washing is needed. Alumina ceramics is a kind of widely used ceramics, because of its superior properties, it has been more and more widely used in modern society, meeting the needs of daily use and special properties.
Alumina ceramics can be divided into two types: high purity type and common type.
High-purity alumina ceramics containing more than 99.9% Al2O3 are usually made into molten glass instead of platinum crucible because of their sintering temperature up to 1650-1990 C and transmission wavelength of 1-6 um. They are used as sodium lamp tubes because of their light transmittance and alkali resistance. They can be used as integrated circuit substrates and high frequency insulating materials in the electronic industry.
Ordinary alumina ceramics can be classified into 99, 95, 90 and 85 kinds according to the content of Al2O3. Sometimes, those with the content of Al2O3 of 80% or 75% are also classified as ordinary alumina ceramics.
Among them, 99 alumina ceramics are used to make high temperature crucibles, refractory furnace tubes and special wear-resistant materials, such as ceramic bearings, ceramic seals and water valves.
95 alumina ceramics are mainly used as corrosion resistant and wear resistant parts.
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Post time: Sep-01-2024