Behaviours of Hydrogen Absorption in Nd-Fe-B Type Magnets
Behaviours of Hydrogen Absorption in Nd-Fe-B Type Magnets
复制标题
Nd-Fe-B 型磁体的吸氢行为
DOI：
10.2497/jjspm.43.978
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
N. Ishigaki
中科院分区：
文献类型：
--
作者：
A. Saguchi;Takahashi Wataru;Y. Kaneko;N. Ishigaki
Nd-Fe-B型永磁体采用粉末冶金工艺生产。因此，制备Nd-Fe-B合金粗粉的粗磨方法是重要的。在这些方法中，粉末的特性，即粉末的形状、粒度分布、氧含量和化学成分，对Nd-Fe-B烧结磁体的磁性能和制造工艺起着非常重要的作用。为了解决这些未知问题，特别采用了粗磨技术之一的氢爆碎法（HD）。本文利用P-C-T装置研究了吸氢条件和合金制备条件对Nd-Fe-B合金吸氢行为的影响。揭示了Nd-Fe-B合金各相吸氢的基本机理。
Nd-Fe-B type permanent magnets are produced by the powder metallurgical process. Therefore, the rough milling methods of making a coarse powder of the Nd-Fe-B alloy are of importance. In these methods, the characteristics of powders, i.e. shapes of powder, particle size distributions, oxygen content and chemical compositions, play a very important role on magnetic properties and manufacturing process of Nd-Fe-B sintered magnets. In order to clear these unknown problems, the Hydrogen Decrepitation (HD) method, which is one of the rough milling techniques, was especially employed. In this paper, the influences of both the hydrogen absorbing conditions and the alloy making conditions on the hydrogen absorbing behaviors in Nd-Fe-B alloy have been investigated using P -C-Tequipment. And the fundamental mechanism of hydrogen absorption into different phases of N d-Fe-B alloy was revealed.