彭龙;杨青慧;刘颖力;宋远强;张怀武;

作者:彭龙;杨青慧;刘颖力;宋远强;张怀武;
关键词:rare earth permanent magnets; Sm(Co, Fe, Cu, Zr)Z; PPM

focusing system; Maxwell 2D/3D; magnetic field simulation
单位:State Key Laboratory of Electronic Thin Films and Integrated

Devices, University of Electronic Science and Technology of

China;
摘要:Rare earth permanent magnets neodymium standard state 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 Br>0.75 T and Hci>1300

kA/m at 300 °C can be obtained. According to the performance

data of Sm(Co0.72Fe0.15Cu0.1Zr0.03)7.5, the magnetic field along

central axis BZ in periodic http://www.999magnet.com/products/112-neodymium-standard-state permanent magnet (PPM) focusing

system was simulated using electromagnetic field analysis

software Maxwell 2D/3D. The BZ exhibited typical cosine curve

along central axis, and the peak value of BZ was high enough to

meet the demand of PPM focusing system at room temperature even

at 200±20 °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 BZ was successfully achieved with good control of the

thickness of cooling pipe.