Improvement of the microstructure and magnetic properties of (La,Ce)-Fe-B nanocrystalline ribbons

被引：2
作者：
Lian, Li-Yu [1 ]
Zhang, Xiao-Wei [1 ]
Liu, Ying [1 ,2 ]
Li, Jun [1 ]
Wang, Ren-Quan [1 ]
机构：
[1] Sichuan Univ, Sch Mat Sci & Engn, Chengdu 610065, Peoples R China
[2] Sichuan Univ, Key Lab Adv Special Mat & Technol, Minist Educ, Chengdu 610065, Peoples R China
来源：
CHINESE PHYSICS B | 2023年 / 32卷 / 07期
关键词：
(La; Ce)-Fe-B; La; Ce ratio; rare earth content; secondary phases inhibition; PHASE-FORMATION; LA; ALLOYS;
D O I：
10.1088/1674-1056/acd8ae
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The obstacles of inferior microstructure and poor magnetic properties of (La,Ce)-Fe-B type magnets stand in the way of expanding their applications. In this work, (La,Ce)-Fe-B melt-spun ribbons were prepared with different La/Ce ratios and rare earth contents. The microstructure and magnetic properties of these ribbons were investigated. With the La/Ce ratio increased, the fraction of the CeFe2 phase decreased and the & beta;-La phase segregated among matrix grains, which deteriorated the coercivity of the ribbons. Reducing the rare earth content effectively suppressed the & beta;-La phase and improved the proportion of the matrix phase in the ribbons. Here, the optimal alloy composite (La15Ce85)(14)Fe80B6 has been obtained with modified microstructure and inhibited secondary phases. Good ribbon performance was tested, with H (cj) = 4.51 kOe, B (r) = 6.29 kG and (BH)(max) = 6.81 MGOe.
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页数：9
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