- ferrous and non ferrous metals
- n.黑色及有色金属
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
ferrous and non ferrous metals
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Ferrous — (Fe2+), in chemistry, indicates a divalent iron compound (+2 oxidation state), as opposed to ferric, which indicates a trivalent iron compound (+3 oxidation state).[1] Outside of chemistry, ferrous is an adjective used to indicate the presence of … Wikipedia
Non-ferrous metal — In metallurgy, a non ferrous metal is a metal that is not ferrous, that is, any metal, including alloys, that does not contain iron in appreciable amounts. Generally more expensive than ferrous metals, non ferrous metals are used because of… … Wikipedia
ferrous — adj. 1 containing iron (ferrous and non ferrous metals). 2 Chem. containing iron in a divalent form (cf. FERRIC). Etymology: L ferrum iron … Useful english dictionary
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Non-stoichiometric compound — Crystallographic defects can cause solids to be non stoichiometric Non stoichiometric compounds are chemical compounds with an elemental composition that cannot be represented by a ratio of well defined natural numbers, and therefore violate the… … Wikipedia
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