首页|High cerium content(Nd-Pr-Ce)2Fe14B melt-spun ribbons with high coercivity

High cerium content(Nd-Pr-Ce)2Fe14B melt-spun ribbons with high coercivity

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The effects of wheel speeds on the magnetic properties and microstructures of[(Nd,Pr)1-xCex]-Fe-B melt-spun ribbons were investigated.Compared to melt-spun ribbons with low cerium(Ce)content(x=0.2),amorphous formation can be suppressed at high wheel speed in the ribbons with a relatively high Ce content(x=0.8),and with the increase of the wheel speed,the magnetic properties of the ribbons with high Ce content raise continuously.At high wheel speed,the coercivity mechanism of melt-spun ribbons is mainly pinning field,and the high wheel speed introduces a large number of defects into the matrix as pinning sites.Furthermore,ribbons with high Ce content form a fine and uniform grain structure,so the grain boundary area enlarges,which further hinders the movement of domain walls.The combined effects of the above factors enable ribbons with high Ce content to have excellent magnetic properties(Hcj=0.977 T,Mr=64 m2 A/kg)at the wheel speed of 35 m/s.

Wheel speedCe contentMicrostructureMagnetic propertiesRare earths

Yujiang Zhong、Junming Wang、Zikai Yuan、Ruijin Liu、Minggang Zhu、Zhe Liu、Xin Chen、Wei Li、Zhaohui Guo

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Division of Functional Materials,Central Iron and Steel Research Institute,Beijing,100081,China

Ningbo Jinji Strong Magnetic Material Co.,Ltd.,Ningbo,315172,China

Jiangxi Jiangwu Rare Metal New Material Co.,Ltd.,Nanchang,330013,China

国家重点研发计划国家重点研发计划国家重点研发计划Key Technology Research and Development Program of ShandongMajor Projects in Inner Mongolia Autonomous Region

2021YFB35030012022YFB35034042022YFB35034012019JZZY020210

2024

10.1016/j.jre.2023.04.005

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(4)
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