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文献统计分析表明,钢铁是重稀土的三大应用领域之一,本文就重稀土在钢铁中的应用作一综合性文献介绍。 一、重稀土元素在钢铁中的基本作用 由于重稀土元素具有很高的活性,容易与氧、氮、硫化合成氧化物、氮化物、硫化物和氧硫化物,而不形成碳化物。它的作用大致可分如下两方面:一是对钢铁的净化作用,在起净化作用的同时,也起着对夹杂物形态的挖制作用;二是稀土的合金化作用,它是以固溶体形式存在于钢中的。
Literature statistical analysis shows that steel is one of the three major applications of heavy rare earths, this article on the application of heavy rare earth in steel for a comprehensive literature introduction. First, the basic role of heavy rare earth elements in steel Because heavy rare earth elements have a high activity, easy with oxygen, nitrogen, sulfide synthesis of oxides, nitrides, sulfides and oxysulfides, without the formation of carbides. Its role can be broadly divided into the following two aspects: First, the purification of steel, while playing the role of purification of the inclusions also play the role of digging; Second, the alloying of rare earth, which is based on solid solution form Exist in steel.