NEW NANOCRYSTALLINE HIGH-REMANENCE ND-FE-B ALLOYS BY RAPID SOLIDIFICATION

被引：470

作者：

MANAF, A ^{[1
]}

BUCKLEY, RA ^{[1
]}

DAVIES, HA ^{[1
]}

机构：

[1] UNIV SHEFFIELD,DEPT ENGN MAT,SHEFFIELD S1 4DU,ENGLAND

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 128卷 / 03期

关键词：

D O I：

10.1016/0304-8853(93)90475-H

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new type of permanent magnet alloy based on Nd-Fe-B, containing 8-9 at% Nd and processed by melt spinning, is described. Remancences of greater than 1 T are obtained in isotropic ribbon samples, with energy products, (BH)(max) in excess of 160 kJ m(-3) and intrinsic coercivity up to about 485 kA m(-1). Microstructurally, the alloys consist of two phases, a matrix of magnetically hard Nd2Fe14B with numerous particles of alpha-iron on grain boundaries. Both the mean grain size of the Nd2Fe14B (<30 nm) and the mean particle size of the alpha-iron (<10 nm) are ultra fine. The second quadrant of the J-H loop is typical of a single-phase, magnetically hard material. The relationship between magnetic properties and microstructure in these nanocrystalline two-phase alloys is discussed.

引用

页码：302 / 306

页数：5

共 13 条

[1]

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[2] THE MICROSTRUCTURAL AND COMPOSITIONAL INFLUENCE UPON HIREM BEHAVIOR IN ND2FE14B [J].