强脉冲磁场在NdFeB生产中的应用  

Application of a Higher Pulsed Magnetic Field in Production of NdFeB Magnets

作　　者：谢宏祖 闫建明 洪光伟 

机构地区：[1]烟台正海磁性材料有限公司,山东烟台264006

出　　处：《稀土》2006年第2期60-65,共6页Chinese Rare Earths

摘　　要：介绍了一个脉宽13m s,磁场强度20T的强脉冲磁场磁滞回线测量装置。磁体的有效工作空间为20×40mm,不均匀性小于1%。用SPD法测量合金的HA和4πM s,对B r、jH c的测量和直流闭路B-H测试仪进行对比。文中对标准校对、涡流干扰的评估及在工业生产和科学研究中的应用情况作了简介。Hysteresis measurement apparatus using a pulsed .magnetic field with 13ms pulse duration and 20T field strength has been presented in this paper. The effective work space of magnetic field coil has a φ20 × 40 mm volume in which the field homogeneity is less than 1 %. The HA and 4πMs of a magnetic alloy have been measured with SPD method. The measured results of Br and jHc of NdFeB magnet are compared with the results of the same sample in a direct current closed circuit B-H hysteresis magnetometer. The apparatus calibrating, the evaluating of eddy disturb and the application in industrial productions and scientific research works have been introduced in this paper also.

关 键 词：强脉冲磁场 磁测量 

分 类 号：TM936[电气工程—电力电子与电力传动]