Enhanced Temperature Stability of Coercivity in Sintered Permanent Magnet by Substitution of Ce for Didymium

被引：36

作者：

Yan, Changjiang ^{[1
,2
,3
]}

Guo, Shuai ^{[1
,2
]}

Chen, Ling ^{[1
,2
]}

Chen, Renjie ^{[1
,2
]}

Liu, Jian ^{[1
,2
]}

Lee, Dong ^{[4
]}

Yan, Aru ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Tech, Ningbo 315201, Zhejiang, Peoples R China

[3] Ningbo Ketian Magnet Co Ltd, Ningbo 315034, Zhejiang, Peoples R China

[4] Univ Dayton, Dayton, OH 45469 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2016年 / 52卷 / 05期

关键词：

Ce-Fe-B; coercivity; microstructure; temperature stability;

D O I：

10.1109/TMAG.2015.2505244

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Effects of partial substitution of Ce for didymium (Pr-Nd alloy, abbreviated to Di) on elevated temperature magnetic properties in sintered (Di(1-x)Ce(x))(27.5)Dy3Al0.1Cu0.1Febal.B (wt.%, x = 0 similar to 0.56) magnets were investigated in this paper. Temperature stability of remanence was found to decrease in Ce substitution. However, the temperature stability of coercivity was largely improved when x >= 0.24. Temperature dependence of magnetocrystalline anisotropy field (H-A) was improved as Ce substitution. Microstructural observation and micromagnetic analysis indicated that a microstructure of magnets was modified when x >= 0.24. The enhancement of temperature stability of coercivity was due to the improvement of temperature dependence of H-A and the modification of microstructure.

引用

页数：4

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