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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Magnetization process of nanocrystalline mischmetal-Fe-B ribbons
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Magnetization process of nanocrystalline mischmetal-Fe-B ribbons

机译：纳米晶混合稀土-Fe-B带的磁化过程

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Mischmetal-Fe-B ribbons were prepared by melt-spinning method, and industrial mischetal with low purity was selected as the raw material. By introducing La and employing nonequilibrium technology, we successfully avoid the formation of CeFe2 phase, which decreases magnetic performance greatly. Considerable energy product and intrinsic coercivity were achieved in (MM)(2.4)Fe14B, which are 80.69 kJ/m(3) and 500 kA/m, respectively. Phase composition and magnetization process of all the samples were investigated. Strong pinning effect was found in all rare-earth-rich samples and was identified as a crucial factor to obtain high coercivity in ribbons compared with the sintered magnets. The Henkel plot is also measured to investigate the intergrain interaction and the results show a strong exchange coupling between grains. Based on these results, the difference in magnetic performance between nanocrystalline ribbons and sintered magnets can be explained. (C) 2016 Published by Elsevier B.V.
机译：采用熔融纺丝法制备了Mischmetal-Fe-B带，并选择了低纯度的工业用小球作为原料。通过引入La并采用非平衡技术，我们成功地避免了CeFe2相的形成，这会大大降低磁性能。在（MM）（2.4）Fe14B中实现了相当大的能量积和固有矫顽力，分别为80.69 kJ / m（3）和500 kA / m。研究了所有样品的相组成和磁化过程。在所有稀土富集的样品中都发现了强大的钉扎效应，并且与烧结磁体相比，钉扎效应被认为是获得带材高矫顽力的关键因素。还测量了汉高图以研究晶粒间的相互作用，结果表明晶粒之间有很强的交换耦合。基于这些结果，可以解释纳米晶带和烧结磁体之间的磁性能差异。 （C）2016由Elsevier B.V.发布

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