bimetal

1. (metallurgy) An object consisting of two metals.Examples: "Thermostatic Bimetals: Thermostatic bimetals are laminated composites using materials with a pronounced difference in thermal expansion'. Therefore, thermostatic bimetals change their shape whenever ambient temperature changes."; "The application of bimetals synthesized with the combination of another secondary metal such as Ni, Pd, or Pt [comprise of a high reduction potential than ZVI; ZVI, −0.44 V; Ni,−0.257 V; Pd, 0.915 V; or Pt, 1.188 V; Arning and Minteer[…]"; "The bimetals can be used in forms such as the deflection of a straight strip, the rotation of spirals or helices and the snap action of dished discs. Applications include temperature indicators, thermostatic controls, energy regulators,[…]"