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
收藏
页码：5043 / 5047
页数：5
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