Permanent magnets: Plugging the gap

被引：554
作者：
Coey, J. M. D. [1 ,2 ]
机构：
[1] Trinity Coll Dublin, Sch Phys, Dublin 2, Ireland
[2] Trinity Coll Dublin, CRANN, Dublin 2, Ireland
来源：
SCRIPTA MATERIALIA | 2012年 / 67卷 / 06期
基金：
爱尔兰科学基金会;
关键词：
Hard magnets; Coercivity; Rare-earth alloys; Oxides;
D O I：
10.1016/j.scriptamat.2012.04.036
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Bulk permanent magnets are indispensable components of numerous consumer and industrial products for energy conversion. The market splits roughly 2:1 between Nd-Fe-B and hard ferrite, whose costs are currently in a ratio of more than 25:1. The escalation of rare earth costs presents an opportunity for new magnets with an energy product of 100-200 kJ m(-3), intermediate between ferrite ( < 38 kJ m(-3)) and Nd-Fe-B ( > 200 kJ m(-3)), provided the costs of raw materials and manufacturing are kept low. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：524 / 529
页数：6
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