Alumina, or Aluminium Oxide, can be produced in a range of purity. Typical grades that are used for modern industrial applications are 99.5% to 99.9% with additives designed to enhance properties. A wide variety of ceramic processing methods can be applied including machining or net shape forming to produce a wide variety of sizes and shapes of component.
Al2O3 ceramics have the following advantages:
1. High hardness (MOHS hardness is 9) and good wear resistance.
2. Good mechanical strength. It’s bending strength could up to 300~500MPa.
3. Excellent heat resistance. It’s continuous working temperature could up to 1000℃.
4. High resistivity and good electrical insulation properties. Especially with excellent high temperature insulation (Room-temperature resistivity is 1015Ω•cm) and voltage breakdown resistance (insulation strength is 15kV/mm).
5. Good chemical stability. It doesn’t react with sulfuric acid, hydrochloric acid, nitric acid and hydrofluoric acid.
6. High temperature corrosion resistance. It can better resist erosion of molten metals like Be, Sr, Ni, Al, V, Ta, Mn, Fe and Co.
Therefore, alumina ceramics are widely used in the modern industrial fields. Mainly used in semiconductor manufacturing industry, electronics industry, machinery industry, high temperature environment, chemical industry, light industry, textile and other fields.
Alumina is a ceramic material widely used in the following applications:
✔ electrical insulators, corrosion-resistance components for gas lasers, for semiconductor processing equipment (such as chuck, end effector, seal ring)
✔ electrical insulators for electron tubes.
✔ structural parts for high-vacuum and cryogenic equipment, nuclear radiation devices, equipment used at high-temperature.
✔ corrosion-resistance components, piston for pumps, valves and dosing systems, sampling blood valves.
✔ thermocouple tubes, electrical insulators, grinding media, thread guides.
Post time: Jul-14-2023