The microstructure and impact toughness of sintered Nd-Fe-B magnets

被引：1
|
作者：
Hu Zhi-Hua [1 ,2 ]
Lian Fa-Zeng [1 ]
Zhu Ming-Gang [2 ]
Li Wei [2 ]
机构：
[1] Northeastern Univ, Minist Educ, Key Lab Anisotropy & Texture Mat, Shenyang 110004, Peoples R China
[2] Cent Iron & Steel Res Inst, Div Funct Mat, Beijing 100081, Peoples R China
来源：
ACTA PHYSICA SINICA | 2008年 / 57卷 / 02期
关键词：
Nd-Fe-B; impact toughness; microstructure; grain boundary;
D O I：
10.7498/aps.57.1202
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The effects of Nb on the rnicrostructure and impact toughness of sintered Nd-Fe-B magnets as well as their inter relation have been investigated. The results show that the addition of Nb improves the microstructure, and increases impact toughness of sintered magnets. When Nb content of the sintered magnets without Co is 1.5 at% the maximum impact toughness is obtained. But for the sintered magnets with the Co addition, the variation of impact toughness of the magnets is not obvious, and the magnets have lower impact energy than the magnets with the Co addition. The microstructure of sintered magnets has been studied. It was found that many factors affect the impact toughness of sintered magnets, but the main factor is the width and shape of grain boundary of sintered magnets.
引用
收藏
页码：1202 / 1206
页数：5
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