摘要
介绍了一个液氮冷却脉冲磁体系统,用于磁性材料的磁热效应的直接测量。该磁体系统使用了相对小的脉冲电源(22kW),其脉冲间隔设为5档(1,2,3,4,5s)。螺线管孔径为20mm,实验测得该磁体系统能稳定工作到2.232T(在180A电流时),在螺线管中心直径为10mm的实验空间内,磁场的理论计算得到均匀度小于1%,满足了磁性材料磁热效应测试的需要。
The pulsed magnet described in this p aper operates at liquid nitrogen tem perature and is used for the direct me asurement of magnetocaloric effect of magnetic materials.It uses a relatively small pulsed power supply(22kW).With pulsed duration of 1?2?3?4and 5seconds,respectively.The solenoid has a bore diameter of 20mm.The magn et system has operated steadily to 2.232T at 180A in ex-periments.The uniformity of magnetic field is better than 1%within 10mm of solenoid center.It is satisfied f or the testing of magnetocaloric effect of magnetic materials.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2003年第1期73-75,共3页
Rare Metal Materials and Engineering
基金
四川省科技厅重点科技攻关项目
