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什么是稀有金屬

來源: 網絡

發布時間:2023-10-12 14:24


稀缺貴金屬又叫稀有金屬,也是稀有元素金屬。常用的稀有金屬有鋰、鈦、鐳等。

稀有元素是自然界中儲量、分布稀少(一般地殼豐度為100ppm以下)且人類應用較少的元素總稱。稀有元素常用來制造特種金屬材料,如特種鋼、合金等,在飛機、火箭、原子能等工業領域屬于關鍵性材料。

按其物理、化學性質及生產方法上的不同可分為:(1)稀有輕金屬,如鈹、鋰、銣、銫等;(2)稀有貴金屬,如鉑、銥、鋨等;(3)稀有分散金屬,如鎵、鍺、銦、鉈等;(4)稀土金屬,如鈧、釔、鑭、鈰、釹等;(5)難熔稀有金屬,如鈦、鋯、鉭、釩、鈮等;(6)放射性稀有金屬,如釙、鐳、錒、鈾、钚等。

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什么是稀有金屬
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