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2018/02/14 09:35:22瀏覽442|回應0|推薦4 | |
molybdos,意思是鉛,因為鉬礦石與鉛礦石被混淆了。]鉬礦石在歷史上被人們所熟知,但該元素的發現是在1778年,由 卡爾·威廉·舍勒識別出來。該金屬在1781年第一次被彼得·雅各·耶爾姆分離得出。 鉬在地球上沒有自然金屬的形態,但是在礦物中以各種氧化物的形式出現。在單體元素形式中,鉬是一種灰色金屬,呈灰口鑄鐵顏色,是所有元素中熔點排名第六高。它很容易在合金中形成堅硬、穩定的碳化物,因此,世界上大多數鉬產品(約80%)都被用作某種鐵合金,包括高強度合金和高溫合金。
Molybdenum is a chemical element with symbol Mo and atomic number 42. The name is from Neo-Latin molybdaenum, from Ancient Greek Μόλυβδος molybdos, meaning lead, since its ores were confused with lead ores.] Molybdenum minerals have been known throughout history, but the element was discovered (in the sense of differentiating it as a new entity from the mineral salts of other metals) in 1778 by Carl Wilhelm Scheele. The metal was first isolated in 1781 by Peter Jacob Hjelm.
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