出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/06/26 07:47 UTC 版)
Ferrocerium is a man-made metallic material that has the ability to give off a large number of hot sparks when scraped against a rough surface (pyrophoricity), such as ridged steel. Because of this property it is used in many applications, such as clockwork toys, strikers for welding torches, so-called "flint-and-steel" fire-starters in emergency survival kits, and, perhaps most commonly, in butane-type lighters, as the initial ignition source for the primary fuel. What is commonly called "flint" in modern times is actually ferrocerium. Also known as Auermetall after its inventor Baron Carl Auer von Welsbach, it is sold under such trade names as Blastmatch, Fire Steel, and Metal-Match.