ferrocerium
Học thuậtThân thiện
Definition
Noun: A pyrophoric alloy primarily composed of iron and cerium. Its key property is that it produces sparks when scraped or struck, making it useful as the ignition source in many lighters and fire-starting tools.
Usage
This word is a technical/scientific term. It refers specifically to the material itself, not the object (like a lighter) that contains it. * The ferrocerium rod in my survival kit is essential for starting fires in damp conditions. * Modern lighter flints are typically made from ferrocerium. * When you strike the steel wheel, it shaves off tiny pieces of ferrocerium, which ignite spontaneously in the air.
Advanced Usage
- As a modifier: The term can be used attributively to describe other nouns.
- He replaced the worn-out ferrocerium flint in his Zippo lighter.
- A ferrocerium striker is a common piece of emergency gear.
Variants and Related Words
- Mischmetal: A broader category of pyrophoric alloys made from rare-earth elements, of which ferrocerium is a specific type. Ferrocerium is sometimes considered a form of mischmetal.
- Flint (in modern context): In everyday language, the "flint" in a lighter is often made of ferrocerium, so the terms are used interchangeably, though technically, true flint is a different mineral (silica).
Synonyms
- Lighter flint (common, non-technical term for the material in its most familiar use)
- Firesteel (common term when referring to the rod used in survival contexts; the rod is typically made of ferrocerium)
Related Phrases/Compounds
- Ferrocerium rod: A cylindrical piece of the alloy, commonly used in survival fire starters.
- Ferrocerium flint: A small, pre-formed piece of the alloy designed for use in lighters.
Noun
- a pyrophoric alloy of iron with cerium; used for lighter flints