THERMOCOUPLE. A device for measuring temperatures, consisting of lengths of two dissimilar metals or alloys that are electrically joined at one end and connected to a voltage-measuring instrument at the other end. When one junction is hotter than the other, a thermal electromotive force is produced that is roughly proportional to the difference in temperature between the hot and cold junctions.
You may also like
TRANSGRANULAR CRACKING. Cracking or fracturing that occurs through or across a crystal or grains. Also called transcrystalline cracking.
SPALLING. A chipping or flaking of a surface due to any kind of improper heat treatment or material dissociation.
SURFACE HARDENING. A generic term covering several processes applicable to a suitable ferrous alloy that produces, by quench hardening only, a surface layer […]
TOUGHNESS. The ability of a metal to absorb energy and deform plastically before fracturing.