High cerium content(Nd-Pr-Ce)_(2)Fe_(14)B melt-spun ribbons with high coercivity  

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

机构地区：[1]Division of Functional Materials,Central Iron and Steel Research Institute,Beijing,100081,China [2]Ningbo Jinji Strong Magnetic Material Co.,Ltd.,Ningbo,315172,China [3]Jiangxi Jiangwu Rare Metal New Material Co.,Ltd.,Nanchang,330013,China

出　　处：《Journal of Rare Earths》2024年第4期690-695,共6页稀土学报（英文版）

基　　金：Project supported by the National Key R&D Program of China(2021YFB3503001,2022YFB3503404,2022YFB3503401);the Key Technology Research and Development Program of Shandong(2019JZZY020210);the Major Projects in Inner Mongolia Autonomous Region。

摘　　要：The effects of wheel speeds on the magnetic properties and microstructures of[(Nd,Pr)_(1-x)Ce_(x)]-Fe-B meltspun 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 m^(2) A/kg)at the wheel speed of 35 m/s.

关 键 词：Wheel speed Cecontent Microstructure Magnetic properties Rare earths 

分 类 号：TF845[冶金工程—有色金属冶金]