Influence of Ce Content on the Rectangularity of Demagnetization Curves and Magnetic Properties of Re-Fe-B Magnets Sintered by Double Main Phase Alloy Method

Author

Minggang Zhu ; Wei Li ; Jingdai Wang ; Liyun Zheng ; Yanfeng Li ; Ke Zhang ; Haibo Feng ; Tao Liu

Author_Institution

Div. of Functional Mater., Central Iron & Steel Res. Inst., Beijing, China

Volume

50

Issue

1

fYear

2014

fDate

Jan. 2014

Firstpage

1

Lastpage

4

Abstract

Research on the application of the most abundant rare-earth elements for permanent magnetic materials has gained intense interest. However, the magnetic properties decrease dramatically with the increase of Ce content due to the traditional Ce substitute for Nd. A double main phase alloy method has been performed to adjust the composition and combination of main phases in the magnets and make a partial main phase without Ce, which can maintain higher remanence. The influence of Ce content on the rectangularity of demagnetization curves and magnetic properties of (Nd_1-xCe_x)30 (Fe,TM)_balB₁ sintered by the double main phase alloy method has been investigated. When the Ce content was 30% of the total amounts of all the rare earth metals, the maximum energy product of the sintered magnet, was still over 43 MGOe.

Keywords

boron alloys; cerium alloys; demagnetisation; iron alloys; neodymium alloys; permanent magnets; remanence; sintering; CeNdFeB; abundant rare-earth elements; demagnetization curves; double main phase alloy method; magnet sintering; magnetic properties; permanent magnetic materials; rare earth metals; rectangularity curves; remanence; Iron; Magnetic properties; Magnetic separation; Perpendicular magnetic anisotropy; Remanence; Ce content; Re-Fe-B magnets; double hard magnetic main phases; magnetic properties;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2278018

Filename

6692973