Interaction and Magnetic Properties of NdCeFeB Melt-Spun Ribbons

被引：0

作者：

Li, Minmin ^{[1
]}

Zuo, Jianhua ^{[1
]}

Hou, Yongjie ^{[1
]}

Bo, Yu ^{[1
]}

Zhang, Ming ^{[1
]}

Dong, Fuhai ^{[1
]}

Li, Zhi ^{[1
]}

Liu, Fei ^{[1
]}

Liu, Yanli ^{[1
]}

Bai, Suo ^{[1
]}

Li, Zhubai ^{[1
]}

Li, Yongfeng ^{[1
,2
]}

机构：

[1] School of Science, Inner Mongolia University of Science and Technology, Baotou,014010, China

[2] Instrumental Analysis Center, Inner Mongolia University of Science and Technology, Baotou,014010, China

来源：

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2023年 / 52卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Binary alloys - Cerium - Cerium alloys - Crystal structure - Exchange coupling - Iron alloys - Melt spinning - Nanocrystals - Neodymium alloys - Remanence - Textures;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The alloy ingots with nominal compositions of (Nd1-xCex)2.4Fe14B (x=0, 0.2, 0.4, 0.6, 0.8, 1.0) were prepared by induction melting and then melt-spun to form nanocrystalline ribbons. Phase composition, magnetic properties and microstructure were investigated. XRD results show that all melt-spun ribbons exhibit the tetragonal structure (Nd,Ce)2Fe14B phase. When Ce substitution content is more than x=0.6, CeFe2 phase appears and CeFe2 content increases with the increase in Ce substitution content. Remanence, remanence ratio (Mr/Ms) and lattice constant decrease while increasing Ce substitution content. A coercivity of 1.31×106 A/m and the maximum energy product of 103 kJ/m3 for (Nd0.8Ce0.2)2.4Fe14B melt-spun ribbon are achieved. The coercivity mechanism and intergrain exchange coupling were studied. The positive δM value was observed in every sample, confirming the existence of exchange coupling interaction. The δM maximum value reaches 0.76 at the Ce substitution content x=0.2, indicating that the intergranular exchange coupling effect is the strongest, which is consistent with the varying remanence ratio. SEM observation reveals that increasing Ce substitution deteriorates the columnar crystal structure of ribbons. Copyright © 2023, Northwest Institute for Nonferrous Metal Research. Published by Science Press. All rights reserved.

引用

页码：2732 / 2736