The Epic Interactive Encyclopedia 1997/The_Epic_Interactive_Encyclopedia_97.iso/r/refractory/infotext

Text File | 1992-09-02 | 426b | 11 lines

(of a material) able to resist high
temperature, for example ceramics made from
clay, minerals, or other earthy materials.
Furnaces are lined with silica and dolomite.
Alumina (aluminium oxide) is an excellent
refractory, often used for the bodies of
spark plugs. Titanium and tungsten are often
called refractory metals because they are
temperature resistant. Cermets are refractory
materials made up of ceramics and metals.