ON THE OXYGEN STABILIZED ND-RICH PHASE IN THE ND-FE-B (-O) PERMANENT-MAGNET SYSTEM

被引：27

作者：

LEMARCHAND, D

VIGIER, P

LABULLE, B

机构：

[1] U.A. 808, Universite de Rouen, 76134, Mont-Saint-Aignan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1990年 / 26卷 / 05期

关键词：

D O I：

10.1109/20.104826

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：

In Nd-Fe-B permanent magnets, the cubic Nd-rich phase (8=0.52 nm) is very important both to the development of coercivity and to sintering mechanism. Transmission electron microscopy shows that this Nd-rich phase is not stable under the electron irradiation. The analysis of the decomposition reaction, leading to the formation of cubic Nd203 and NdO, proves that the Nd-rich phase can be classed as a NdO compound which is supersaturated with Oxygen and stabilized with Iron. Taking into account the existence of a liquid miscibility gap in the Nd-Fe-B-O quaternary system, a model is proposed to explain its formation. © 1990 IEEE

引用

页码：2649 / 2651

页数：3

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