Structural and magnetic properties of nanocrystalline Fe-rich Fe-Nb-Nd-B sintered magnet produced by consolidating amorphous powders

被引：6

作者：

Kojima, A

Makino, A

Inoue, A

机构：

[1] ALPS ELECT CO LTD,CENT RES LAB,NAGAOKA,NIIGATA 940,JAPAN

[2] TOHOKU UNIV,MAT RES INST,SENDAI,MIYAGI 980,JAPAN

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1997年 / 33卷 / 05期

关键词：

D O I：

10.1109/20.619581

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：

Nanocrystalline bulk Fe88Nb2Nd5B5 and Fe86Nb2Nd7B5 alloys were made by consolidating amorphous powders with an electric-pulse-current-sintering method and subsequent annealing. Bulk alloy made by consolidating amorphous powders has a higher density ( the maximum density could reach 7.5 g/cm(3) consolidating at 873 K and 636 MPa) than that made by consolidating crystalline powders, presumably because the amorphous alloy softens around the crystallization temperature. The structure formed after annealing at 1023 K for 180 s shows a nanocrystalline composite consisting of bcc-Fe, Nd2Fe14B and Fe3B or Fe2B phases with grain sizes of 20-40 nm. The nanocrystalline bulk Fe88Nb2Nd5B5 alloy shows hard magnetic properties, remanence (J(r)) of 1.05 T, coercive force (H-cJ) of 263 kA/m, and maximum energy product ((BH)(max)) of 75 kJ/m(3).

引用

页码：3817 / 3819

页数：3

共 7 条

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