pyrophoric alloy


Also found in: Dictionary, Thesaurus.

pyrophoric alloy

[¦pī·rə¦fȯr·ik ′al‚ȯi]
(metallurgy)
An alloy such as ferrocerium that produces a spark when struck with metal (steel) at an angle; used for automatic cigarette lighters.
An alloy in powder form that spontaneously oxidizes in air, reaching high temperatures.