PREPARATION AND TEM-STUDY OF SINTERED ND18FE74B6GA1NB1 MAGNETS

被引：48

作者：

BERNARDI, J ^{[1
]}

FIDLER, J ^{[1
]}

SEEGER, M ^{[1
]}

KRONMULLER, H ^{[1
]}

机构：

[1] MAX PLANCK INST MET RES,INST PHYS,W-7000 STUTTGART 80,GERMANY

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1993年 / 29卷 / 06期

关键词：

D O I：

10.1109/20.281024

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：

Ga-doped Nd-Fe-B sintered magnets show an improved wetting behaviour of the liquid phase during sintering and the formation of additional Ga -containing intergranular phases. Nb forms precipitates within the hard magnetic phase and an intergranular boride-phase. This improves the separation and decoupling of the hard magnetic grains and enhances the coercivity. In the as-sintered magnets we find a new Nd-rich Ga-containing region which contains Nd3Ga and NdsGa3. This region is formed from the liquid phase during cooling. In addition the delta-phase occurs in the annealed magnets. Nb is found in the hexagonal NbFeB intergranular boride and in small Nb-containing precipitates within the hard magnetic phase. There is no Nb detected in the Nd-rich phases.

引用

页码：2773 / 2775

页数：3

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