How Extrinsic Is the Coercivity in NdFeB Bonded Magnets?

被引：4

作者：

Perigo, E. A. ^{[1
,2
]}

Cruz, I. A. ^{[2
]}

Antunes, B. ^{[2
]}

Braga, A. P. V. ^{[2
,3
]}

Landgraf, F. J. G. ^{[2
,3
]}

机构：

[1] Univ Luxembourg, Lab Phys Adv Mat, L-1511 Luxembourg, Luxembourg

[2] Inst Technol Res, BR-05508901 Sao Paulo, Brazil

[3] Univ Sao Paulo, Polytech Sch, BR-05508010 Sao Paulo, Brazil

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2013年 / 49卷 / 09期

基金：

巴西圣保罗研究基金会;

关键词：

Coercivity; magnetic materials; NdFeB; pressing; FE-B MAGNETS; MECHANICAL-PROPERTIES; ND; MICROSTRUCTURE; BEHAVIOR;

D O I：

10.1109/TMAG.2013.2253788

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：

The influence of the densification step, performed by uniaxial pressing at room temperature, on the coercivity mu H-0(c) of NdFeB bonded magnets has been analyzed. The mass density does not play any role on mu H-0(c) of non-cured magnets prepared by the mentioned method. Due to the brittle and intergranular character of the Nd2Fe14B-based phase fracture, the nano-sized grains are not affected or the modification is negligible, which maintains mu H-0(c) unchanged. After curing, the intrinsic coercivity of the magnets is reduced as a function of the compaction pressure increase.

引用

页码：5043 / 5047

页数：5

共 50 条

[41] Understanding the microstructure and coercivity of high performance NdFeB-based magnets
Woodcock, T. G.
Zhang, Y.
Hrkac, G.
Ciuta, G.
Dempsey, N. M.
Schrefl, T.
Gutfleisch, O.
Givord, D.
SCRIPTA MATERIALIA, 2012, 67 (06) : 536 - 541
[42] Preparation of parylene-coated bonded NdFeB magnets
Ma, Bin
Sun, Aizhi
Gao, Xuexu
Bao, Xiaoqian
Li, Jiheng
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2018, 467 : 114 - 119
[43] Aging behavior of premixed powder for bonded NdFeB magnets
Jia, W.-J., 2005, Beijing Institute of Aeronautical Materials (BIAM)
[44] The effects of surface modification on the properties of bonded NdFeB magnets
Liu, W
Yang, YG
Meng, Y
Wu, JS
MATERIALS TRANSACTIONS, 2003, 44 (06) : 1159 - 1162
[45] Use of paired, bonded NdFeB magnets in redox magnetohydrodynamics
Arumugam, PU
Clark, EA
Fritsch, I
ANALYTICAL CHEMISTRY, 2005, 77 (04) : 1167 - 1171
[46] INVESTIGATION ON THE MAGNETIZING FIELD-DEPENDENCE OF COERCIVITY IN NDFEB AND SMFEN MAGNETS
HU, JF
GERTH, H
FORKL, A
MARTINEK, G
KOU, XC
KRONMULLER, H
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1993, 137 (01): : 227 - 234
[47] Application and Development of Bonded NdFeB Permanent Magnets(Continued)
China Rare Earth Information, 2013, (04) : 1 - 3
[48] COERCIVITY DEPENDENCY OF SINTERED NDFEB MAGNETS ON AL CONTENT AND THE ALLOYING ROUTE
ROZENDAAL, E
IEEE TRANSACTIONS ON MAGNETICS, 1990, 26 (05) : 2631 - 2633
[49] The Origin of Coercivity Enhancement of Sintered NdFeB Magnets Prepared by Dy Addition
Yu, N. J.
Pan, M. X.
Zhang, P. Y.
Ge, H. L.
JOURNAL OF MAGNETICS, 2013, 18 (03) : 235 - 239
[50] Study on the Mechanism of the High Coercivity of NdFeB Magnets Prepared by HDDR Method
Zhang Pengyue
Pan Minxiang
Zhu Jinjin
Ge Hongliang
Sun Hao
Jin Yibiao
RARE METAL MATERIALS AND ENGINEERING, 2011, 40 (06) : 1097 - 1101

← 1 2 3 4 5 →