Effect of Cu-doping on the microstructure and magnetic properties of low-cost MM-Fe-B melt spun ribbons

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2024-10-19 DOI:10.1016/j.jmmm.2024.172602

Mingming Liu, Wei Quan, Yingzhengsheng Huang, Qiang Zheng, Juan Du

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Abstract

In this paper, MM-Fe-B ribbons with different MM contents were prepared by melt spun technique at a fixed copper roll speed of 25 m/s. The maximum magnetic energy product of the MM₁₅Fe₇₈B₇ ribbon is 9.22 MGOe and the coercivity is 6005 Oe. With the increase of MM contents, the coercivity of the magnet was increased, and the highest coercivity reached 9352 Oe in MM₁₈Fe₇₅B₇. In addition, the microstructure and magnetic properties of Cu-doped MM₁₅Fe_78-xB₇Cu_x (x = 0, 0.4, 0.6, 1 at.%) ribbons were systematically investigated. The results show that the introduction of Cu can suppress the formation of α-Fe soft magnetic phase in the melt spun ribbons. When the Cu content is 0.4 at.%, the grain size decreased from 61 nm to 44 nm, and the coercivity was improved from 6005 Oe to 8527 Oe, which is an increment of about 42 %, whereas the remanence and the magnetic energy product can remain basically unchanged. The addition of Cu element can not only refine the grain size, but also facilitate the enhancement of the homogeneity of the microstructure of the ribbons.

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掺铜对低成本 MM-Fe-B 熔融纺丝带微观结构和磁性能的影响

本文采用熔融纺丝技术，在固定铜辊速度为 25 m/s 的条件下制备了不同 MM 含量的 MM-Fe-B 磁带。MM15Fe78B7 磁带的最大磁能积为 9.22 MGOe，矫顽力为 6005 Oe。随着 MM 含量的增加，磁体的矫顽力也随之增加，MM18Fe75B7 的最高矫顽力达到 9352 Oe。此外，还系统研究了掺铜 MM15Fe78-xB7Cux（x = 0、0.4、0.6、1 at.%）带的微观结构和磁性能。结果表明，Cu 的引入可以抑制熔融纺丝带中 α-Fe 软磁相的形成。当铜含量为 0.4%时，晶粒尺寸从 61 nm 减小到 44 nm，矫顽力从 6005 Oe 提高到 8527 Oe，提高了约 42%，而剩磁和磁能积基本保持不变。铜元素的加入不仅可以细化晶粒尺寸，还有利于提高带材微观结构的均匀性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.