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稀土元素家族包括原子序数从57至71的15个镧系元素和与它们同属ⅢB族的钪、钇2个元素。由于具有优异的光、电、磁等特性,它们可以与其他元素组成种类繁多、用途各异的新型材料,可以大幅提高其他产品的质量和性能,而被广泛地应用于国民经济和国防工业的各个领域,被形象地喻为“工业维生素”和“新材料之母”。当今世界,每6项新技术的发明,就有一项离不开稀土。在强调人与自然和谐发展的21
The group of rare earth elements includes 15 lanthanides with atomic numbers from 57 to 71 and 2 elements of scandium and yttrium with their group IIIB. Because of their excellent optical, electrical and magnetic properties, they can form a wide range of new materials with various elements and different uses to greatly improve the quality and performance of other products, and are widely used in the national economy and the defense industry Various fields are vividly described as “industrial vitamins ” and “the mother of new materials ”. In today’s world, every 6 inventions of new technologies, there is one can not do without rare earth. In emphasizing the harmonious development of man and nature 21