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.
参考文献
[1] | 吴卫,刘晓烈.室温磁致冷材料及应用[J].稀有金属材料与工程,2001(03):166-168. |
[2] | Pecharsky V K;Gschneidner K A .Comparison of the Magnetocaloric Effect Derived from Heat Capacity Direct and Magnetization Measurements[J].Advances in Cryogenic Engineering,1996,42:423. |
[3] | Dan kov S Yu et al.Experimental Device for Studying the Magnetocaloric Effect in Pulse Magnetic Field[J].Review of Scientific Instruments,1997,68(06):2432. |
[4] | Ponomarev B K .Apparatus for Measuring the Magnetocaloric Effect in Metal Specimens in Pulsed up to 8T[J].Instruments and Experimental Techniques,1983,26:659. |
[5] | 黄焦宏,王正德,金培育,刘金荣,张泽玉,王贵,杨保荣,成永顺,邱巨峰,徐来自.Gd5(SixGe1-x)4合金磁热效应的直接测量[J].包头钢铁学院学报,2000(03):212-214. |
[6] | Tang Yongbo;Chen Yungui.Theoritic Design of Pulsed Magnet for Direct Measurement of Magnetocaloric Effect[J].Transactions of China Electrotechnical Society |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%