Cermet 7B – Group 4
What? • A material consisting of processed ceramic particles bonded with metal, and used in high-strength and high-temperature applications. • Also called ceramal.
A cermet is designed to have the properties of both a ceramic, such as high temperature resistance and hardness, and those of a metal, such as the ability to undergo plastic deformation.
The metallic elements used are nickel, molybdenum, and cobalt. • cermets are usually less than 20% metal by volume.
Examples • Cermets are used in the manufacturing of resistors, capacitors, and other electronic components which may experience high temperatures.
Cermets in Transportation • Ceramic parts have been used in conjunction with metal parts as friction materials for brakes and clutches.
Other Applications • The US Army and the British Army have also had extensive research in the development of cermets. • These include the development of lightweight ceramic projectile proof armor for soldiers and also Chobham armor.
Cermets are also used in machining on cutting tools. • Cermet has also been researched for benefits in the storage of nuclear waste.