钕铁硼强磁体的冲击去磁规律实验研究

伍俊英; 陈朗; 李维; 冯长根

doi:10.11858/gywlxb.2011.01.005

钕铁硼强磁体的冲击去磁规律实验研究

doi: 10.11858/gywlxb.2011.01.005

1.
北京理工大学爆炸科学与技术国家重点实验室，北京 100081；
2.
海军装备部驻重庆地区军事代表局，重庆 400042

详细信息

通讯作者:
伍俊英

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出版历程
- 收稿日期: 2010-05-31
- 修回日期: 2010-08-22
- 刊出日期: 2011-02-15

Experimental Study on Shock Wave Demagnetization of Nd2Fe14B Hard Ferromagnetic

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;
2.
Military Representative Office of Naval Equipment Department in Chongqing, Chongqing 400042, China

More Information

Corresponding author: WU Jun-Ying

摘要

摘要: 为了研究钕铁硼（Nd2Fe14B）强磁体在冲击加载作用下的去磁规律，建立了平面波爆炸冲击加载实验装置，进行了冲击去磁实验。测量了冲击去磁产生的感生电动势，获得了冲击去磁时间、脉冲宽度等性能参数。通过改变加载磁体的冲击波强度和磁体尺寸参数，分析了Nd2Fe14B磁体在不同冲击波压力作用下的去磁程度和磁体尺寸参数对感生电动势大小的影响规律。实验结果表明：Nd2Fe14B磁体发生冲击去磁的临界压力低于8.52 GPa；感生电动势随着磁体直径的增加而增加，随着磁体高度的增加而减小。
- Nd2Fe14B磁体 /
- 冲击去磁 /
- 爆炸去磁脉冲功率源 /
- 炸药
Abstract: For the study of the demagnetization performance of Nd2Fe14B ferromagnetic under shock wave loading, the plane shock wave loading experiment device was established, and the shock demagnetization experiments were conducted. The electromotive forces were measured, and the shock demagnetization time and pulse width were obtained. The demagnetization rates with different shock wave pressures were discussed, and the effects of magnet sizes on the electromotive force were analyzed. The results show that the time is about 0.28 s between the shock wave loading Nd2Fe14B ferromagnetic and shock demagnetization occurring. The critical pressure of demagnetization is lower than 8.52 GPa. The electromotive force increases with the increase of the magnet diameter and the decrease of the magnet height.
- Nd2Fe14B /
- shock wave demagnetization /
- explosive-driven shock demagnetization generator /
- explosives

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参考文献(16)

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