Alumina
Alumina (Aluminium Oxide) offers a combination of good mechanical and electrical properties leading to a wide range of applications.
Alumina can be produced in a range of purities with additives designed to enhance properties. It can be formed using a wide variety of ceramic processing methods and can be machined or net shaped formed to produce a wide variety of sizes and shapes of component. In addition it can be readily joined to metals or other ceramics using metallising and brazing techniques.
Typical characteristics include:
- Good strength and stiffness
- Good hardness and wear resistance
- Good corrosion resistance
- Good thermal stability
- Excellent dielectric properties (from DC to GHz frequencies)
- Low dielectric constant and loss tangent
Typical applications include:
- Seal rings
- Laser tubes
- Ballistic armour
- Electrical insulators
- Threadguides
- Medical prostheses
- Electronic substrates
- Thermocouple tubes
- Grinding media
- Wear components
