| 低纯度钕稀土铁硼永磁合金的磁性研究 |
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| 引用本文： | 龚伟,王亦忠,冯敏英,王震西,黄永成,曹用景.低纯度钕稀土铁硼永磁合金的磁性研究[J].应用科学学报,1988,6(3):241-244. |
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| 作者姓名： | 龚伟 王亦忠 冯敏英 王震西 黄永成 曹用景 |
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| 作者单位： | 1. 中国科学院物理研究所;2. 中国科学院电子学研究所 |
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| 摘 要： | 选用廉价低纯度钕稀土取代高纯度金属钕,用粉末冶金法制备了Nd-Fe-B永磁体.样品最大磁能积(BH)max达41MGOe (0.328MT·A/m).使用X射线衍射仪、差热分析仪、磁天平、提拉样品磁强计和脉冲强磁场等实验方法,对Nd-Fe-B合金进行了分析测量.在1400K附近有相变峰.低温下,Nd-Fe-B合金磁滞回线呈现异常,来源于磁体中Nd2Fe14B主相锥面型各向异性.
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| 收稿时间： | 1985-08-21 |
| 修稿时间： | 1986-02-14 |
STUDIES IN MAGNETIC PROPERTIES OF NdFeB ALLOYS WITH LOW PURITY NEODYMIUM |
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| GONG WEI,WANG YIZHONG,FENG MINYING,WANG ZHENXI,HUANG YONGCHBNG,CAO YONGJING.STUDIES IN MAGNETIC PROPERTIES OF NdFeB ALLOYS WITH LOW PURITY NEODYMIUM[J].Journal of Applied Sciences,1988,6(3):241-244. |
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| Authors: | GONG WEI WANG YIZHONG FENG MINYING WANG ZHENXI HUANG YONGCHBNG CAO YONGJING |
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| Institution: | 1. Institute of Physics, Academia Sinica, Beijing;2. Institute of Electronics, Academia Sinica, Beijing |
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| Abstract: | By substituting low purity neodymium for the high purity one, NdFeB permanent magnets of (BH)max=41 MGOe were prepared by powder metallurgy. Several properties of NdFeB alloys were measured by means of x-ray diffraction, the differential thermal analyzer, magnetic balance, extracting sample magnetometer and pulse high magnetic field apparatus respectively. The results show that there is a peak of phase transition at 1439K, and the abnormal phenomenon on the magnetic hysteresis loop at low temperature originates from the conical magneto-crystalline anisotropy of the major phase Nd2Fe14 in the NdFeB alloys. |
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