Application of high-temperature permanent magnets Sm(Co, Fe, Cu, Zr)Z in PPM focusing system

被引：2
|
作者：
Peng Long [1 ]
Yang Qinghui [1 ]
Liu Yingli [1 ]
Song Yuanqiang [1 ]
Zhang Huaiwu [1 ]
机构：
[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China
来源：
JOURNAL OF RARE EARTHS | 2008年 / 26卷 / 05期
关键词：
rare earth permanent magnets; Sm(Co; Fe; Cu; Zr)(Z); PPM focusing system; Maxwell; 2D/3D; magnetic field simulation;
D O I：
10.1016/S1002-0721(08)60172-6
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Rare earth permanent magnets Sm(Co, Fe, Cu, Zr)(Z) with outstanding performance and high-temperature thermal stability were fabricated. Optimized by Fe content and process, Sm(Co0.72Fe0.15Cu0.1Zr0.03)(7.5) magnet with B-r>0.75 T and H-ci>1300 kA/m at 300 degrees C can be obtained. According to the performance data of Sm(Co0.72Fe0.15Cu0.1Zr0.03)(7.5), the magnetic field along central axis B-Z in periodic permanent magnet (PPM) focusing system was simulated using electromagnetic field analysis software Maxwell 2D/3D. The B-Z exhibited typical cosine curve along central axis, and the peak value of B-Z was high enough to meet the demand of PPM focusing system at room temperature even at 200 +/- 20 degrees C. Additionally, a kind of simple cooling structure for PPM focusing system was designed by setting cooling pipe between polepieces. Simulated results showed that smooth cosine curve of B-Z was successfully achieved with good control of the thickness of cooling pipe.
引用
收藏
页码：731 / 734
页数：4
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