Effects of Nb and C additions on the crystallization behavior, microstructure and magnetic properties of B-rich nanocrystalline Nd-Fe-B ribbons

被引：13

作者：

Li, Shun ^{[1
]}

Bai, Shuxin ^{[1
]}

Zhang, Hong ^{[1
]}

Chen, Ke ^{[1
]}

Xiao, Jiayu ^{[1
]}

机构：

[1] Natl Univ Def Technol, Dept Mat Engn & Appl Chem, Changsha 410073, Hunan, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 470卷 / 1-2期

关键词：

Nanocomposite magnet; Crystallization behavior; Magnetic properties; NANOCOMPOSITE MAGNETS; TI ADDITIONS; ALLOYS;

D O I：

10.1016/j.jallcom.2008.02.054

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effects of Nb and C additions on the crystallization behavior, microstructure and magnetic properties of B-rich Nd9.4Fe79.6-xNbxB11-yCy (x = 0, 2, and 4; y = 0, 0.5, and 1.5) alloy ribbons have been investigated. The results show that Nb and C additions change the crystallization behavior of Nd9.4Fe79.6B11, avoid the formation of metastable Nd2Fe23B3 phase. leading to the simultaneously precipitation of alpha-Fe and Nd2Fe14B phases. The results also show that Nb and C additions suppress the formation and growth of the soft alpha-Fe phases, leading to the presence of a large amount of Nd2Fe14B phases. Nb and C additions also refine the structure, and thus increase the exchange coupling interaction between the soft and hard phases. Excellent magnetic properties of B-r = 0.85T, H-i(c) = 1106 kA/m, and (BH)(max) = 117 kJ/m(3) have been achieved in Nd9.4Fe75.6Nb4B10.5C0.5 alloy ribbons. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：141 / 144

页数：4

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