Microstructure and magnetic properties of (Nd,Dy)FeB and (Nd,Pr)FeB strips

被引：1

作者：

Park, Seung-Yeon ^{[1
]}

Kim, Jin-Ho ^{[1
]}

Lim, Kyoung-Mook ^{[1
]}

Ahn, Sung-Yong ^{[2
]}

Choi, Kang Ryong ^{[2
]}

Kim, Chul-Sung ^{[3
]}

机构：

[1] Korea Inst Ind Technol, Rare Met R&BD Grp, Inchon 406840, South Korea

[2] Samsung Electromech, Corp R&D Inst, Suwon 443743, South Korea

[3] Kookmin Univ, Dept Nano & Elect Phys, Seoul 136702, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2015年 / 66卷 / 11期

关键词：

Nd-Fe-B; Strip casting; Microstructure; Magnetic properties; Grain size; Melting temperature; PERMANENT-MAGNETS; CAST ALLOYS; ND; FE; PR; COERCIVITY;

D O I：

10.3938/jkps.66.1755

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, we investigate the effect of Dy and Pr substitution for Nd on the microstructure and the magnetic properties of Nd-Fe-B alloys fabricated by using the strip-casting process. The addition of Dy and Pr changes the melting temperature of the strips, which results in differences in undercooling during solidification. The alteration of undercooling induces variations in the nucleation frequency and the cooling rate in the strips and changes the grain size and alignment. These microstructural changes have a large effect on the coercivity of the strips. The addition of Dy improves the coercivity of the strips due to the presence of more refined and well-oriented grains, which is attributed to the high thermal gradient. The addition of Pr to strips with a low thermal gradient reduces the coercivity due to the large grain size.

引用

页码：1755 / 1760

页数：6

共 50 条

[21] Preparation Method and Magnetic Properties of Large-Size Bulk (Nd, Dy)FeB Magnets Obtained via Dy Diffusion Treatment During Sintering Process
Pengjie Zhang
Wei Sun
Jiquan Wang
Bingshan Li
Wei Xia
Hui Liu
Yongqi Wang
Yujie Cao
Guangqing Xu
Yucheng Wu
Journal of Superconductivity and Novel Magnetism, 2022, 35 : 491 - 500
[22] Preparation Method and Magnetic Properties of Large-Size Bulk (Nd, Dy)FeB Magnets Obtained via Dy Diffusion Treatment During Sintering Process
Zhang, Pengjie
Sun, Wei
Wang, Jiquan
Li, Bingshan
Xia, Wei
Liu, Hui
Wang, Yongqi
Cao, Yujie
Xu, Guangqing
Wu, Yucheng
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2022, 35 (02) : 491 - 500
[23] Application of hydrogen vibration milling in the processing of NdFeB and (Nd,Pr)FeB permanent magnets
Mottram, RS
Yartys, V
Guegan, PW
Harris, IR
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1999, 24 (2-3) : 257 - 261
[24] Application of hydrogen vibration milling in the processing of NdFeB and (Nd, Pr)FeB permanent magnets
Mottram, R.S.
Yartys, V.
Guegan, P.W.
Harris, I.R.
International Journal of Hydrogen Energy, 1999, 24 (02): : 257 - 261
[25] Magnetic properties and microstructure of exchange coupled FePt-FeB films
Tsai, Jai-Lin
Huang, Jian-Chiang
Chen, Li-Hung
Lin, Chiun-Shiuan
SURFACE & COATINGS TECHNOLOGY, 2013, 231 : 456 - 459
[26] Effects of Dy on Magnetic Properties and Microstructure of Nanocomposite (Nd,Pr)10.5-xDyxFe83.5B6 Alloys
Zha Wusheng
Zhou Shurong
Zheng Hao
Wu Kaixia
Yuan Qiang
Zhao Xinwei
RARE METAL MATERIALS AND ENGINEERING, 2015, 44 (04) : 813 - 816
[27] Structural and magnetic properties of FeB microfibers
S.B. Qadri
M.A. Dinderman
W.J. Dressick
P.E. Schoen
P. Lubitz
J.H. He
R.J. Tonucci
J. Cross
Applied Physics A, 2007, 89 : 493 - 496
[28] Structural and magnetic properties of FeB microfibers
Qadri, S. B.
Dinderman, M. A.
Dressick, W. J.
Schoen, P. E.
Lubitz, P.
He, J. H.
Tonucci, R. J.
Cross, J.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2007, 89 (02): : 493 - 496
[29] On the Squareness Factor Behavior of RE-FeB (RE = Nd or Pr) Magnets Above Room Temperature
Perigo, E. A.
Takiishi, H.
Motta, C. C.
Faria, R. N.
IEEE TRANSACTIONS ON MAGNETICS, 2009, 45 (10) : 4431 - 4434
[30] Dy元素对快淬(Nd,Pr)FeB合金的磁性能和晶化转变温度的影响
查五生
周淑容
郑浩
吴开霞
袁强
稀有金属材料与工程, 2013, 42 (12) : 2509 - 2512

← 1 2 3 4 5 →