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Shanxi Dimine International Trade Co.,Ltd
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INTRODUCTION TO SINTERED NdFeB MAGNET
Sintered NdFeB magnet is the rare-earth permanent magnet materials offering the highest energy density currently available. in comparison with conventional magnet materials, such as ALNiCo or Hard Ferrite magnet material, NdFeB magnets exhibit a number of excellent magnetic properties. For example, the energy product of NdFeB magnet is about ten fold than those of AINiCo and Hard Ferrite. The theoretical energy product of NdFeB magnet is 64MGOe.
The excellent magnetic properties of this material group can be attributed to the strongly magnetic matrix phase Nd2Fe14B(tetragonal structure) featuring very high saturation magnetization Bs(Bs=16KGs)and high magnetic anisotuopy field HA(HA=73Koe).At present, the highest energy product of 54 MGOe has been obtained in laboratory. The commercial sintered NdFeB magnet with energy product of 45MGOe is widely used up to date.
Applications of Sintered NdFeB Magnets
1)Electroacoustics : loudspeakers, headphones as well as microphones;
2)Motors and Generators: stepping motors,servomotors and DC machines;
3)Magnetic Separation;
4)Other Devices: MRI Equipment, Magnetic couplings, Hard Disk Drives, Measuring instruments etc.
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