Highest performance of Nd-Fe-B magnet over 55 MGOe

Grain alignment and microstructure of (Nd,Dy)12.8(Fe,M) 80.7B6.5 by strip casting

“…With adequate chemical composition, sintered magnets prepared from strip cast alloys have a higher alignment coefficient, low rare-earth content, high fraction of the hard magnetic phase and high permanent magnetic properties. The highest maximum energy density of sintered magnets prepared from strip cast alloys reached to 444 kJ/m 3 (55.8 MGOe) in 2000 [1]. Rodewald et al prepared sintered Nd-Fe-B magnets with maximum energy density 451 kJ/m 3 (56.7 MGOe) in 2002 [3].…”

“…Recently, sintered Nd-Fe-B magnets produced from strip cast alloys has been studied extensively due to their high permanent magnetic properties [1][2][3][4]. With adequate chemical composition, sintered magnets prepared from strip cast alloys have a higher alignment coefficient, low rare-earth content, high fraction of the hard magnetic phase and high permanent magnetic properties.…”

Recycle of rare earth sintered magnet powder scraps as electromagnetic wave absorbers in gigahertz range

“…The sintered magnet composed of the Nd 2 Fe 14 B primary phase has been developed since 1984 [1] and used for many applications such as various motors, the magnetic field generator for MRI, and so on [2] because it has the best performance in the permanent magnet at the present time [3]. The production amount of the NdFeB-type sintered magnets is estimated to be 8000 tonnes year −1 in Japan.…”

Recycling of rare earth sintered magnets as isotropic bonded magnets by melt-spinning

“…The sintered magnet composed of the Nd 2 Fe 14 B primary phase has been developed since 1984 [1] and used for many applications such as voice coil motor, the magnetic field generator for MRI, and so on [2], since it has the best performance in the permanent magnet at the present time [3]. The production amount of the Nd-Fe-B sintered magnets is estimated to be 6000 t in Japan.…”