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铁基非晶合金,特别是具有高饱和磁化强度的铁基非晶合金因其优异的磁学性能而受到研究人员和工业界的广泛关注.然而,要提高铁基非晶合金的饱和磁化强度,就需要提高合金的铁磁元素含量.但当铁含量高于80 at%时,合金的非晶形成能力很低,难以制备出块体非晶合金材料.因此,研究开发具有高铁磁元素含量、高饱和磁化强度和大非晶形成能力的铁基非晶合金具有重要意义.本文采用钴替代铁的合金化方法和熔体提纯去除杂质方法,开发出系列Fe81–xCoxMo1P7.5C5.5B2Si3(x=0,5,10,15,20)块体非晶合金,并发现其饱和磁化强度Js(Js=μoOs)分别达到1.55,1.60,1.62,1.65和1.59 T.其中Fe66Co15Mo1P7.5C5.5B2Si3非晶合金棒的临界尺寸Φ2 mm,Js达到1.65 T,是迄今报道的饱和磁化强度最大的块体非晶合金,具有重要应用前景.
Iron-based amorphous alloys, especially iron-based amorphous alloys with high saturation magnetization have drawn the attention of researchers and industry due to their excellent magnetic properties.However, to improve the saturation magnetization of Fe-based amorphous alloys , It is necessary to improve the ferromagnetic element content of the alloy, but when the iron content is higher than 80 at%, the amorphous formation ability of the alloy is very low, so it is difficult to prepare the bulk amorphous alloy material.Therefore, , High saturation magnetization and large amorphous ability of iron-based amorphous alloy is of great significance.In this paper, cobalt instead of iron alloying method and melt purification to remove impurities, developed a series of Fe81-xCoxMo1P7.5C5.5B2Si3 (x = 0,5,10,15,20) bulk amorphous alloys and found that their saturation magnetization Js (Js = μoOs) reached 1.55, 1.60, 1.62, 1.65 and 1.59 T. The Fe66Co15Mo1P7.5C5.5B2Si3 amorphous The critical dimension of the alloy rod is Φ2 mm and the Js reaches 1.65 T, which is the block amorphous alloy with the largest saturation magnetization so far reported, which has an important application prospect.