出典:Wiktionary
出典:『Wiktionary』 (2026/04/24 23:22 UTC 版)
| Chemical element | ||||||||
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| Zr Atomic number 40 zirconium |
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| Previous: ← yttrium (Y) | ||||||||
| Next: niobium (Nb) → | ||||||||
| English Wikipedia article on Zirconium |
zirconium (countable and uncountable, plural zirconiums)
| Chemical element | ||||||||
|---|---|---|---|---|---|---|---|---|
| Zr Atomic number 40 zirconium |
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| Previous: ← yttrium (Y) | ||||||||
| Next: niobium (Nb) → |
出典:Wikipedia
出典:『Wikipedia』 (2011/07/24 15:39 UTC 版)
Zirconium (
/zərˈkoʊniəm/ zər-koh-nee-əm) is a chemical element with the symbol Zr and atomic number 40. The name of zirconium is taken from the mineral zircon. Its atomic mass is 91.224. It is a lustrous, grey-white, strong transition metal that resembles titanium. Zirconium is mainly used as a refractory and opacifier, although minor amounts are used as alloying agent for its strong resistance to corrosion. Zirconium is obtained mainly from the mineral zircon, which is the most important form of zirconium in use.