metal materials; NdFeB magnet; strip casting

作者:李波,胡季帆,王东玲,郭炳麟,王新林
关键词:metal materials; NdFeB magnet; strip casting; hydrogen decreipitation; nucleation mechanism; rare earths
单位:Department of Functional Materials, Central Iron & Steel Research Institute,Department   of Physics, Block neodymium magnet
http://www.chinamagnets.biz/Neodymium/Block-neodymium-magnet.php Shandong University,Department of Functional Materials, Central Iron & Steel Research Institute,Department of Functional Materials, Central Iron & Steel Research Institute,Department of Functional Materials, Central Iron & Steel Research Institute  Beijing 100081, China









, Jinan 250100,  China









, Beijing 100081, China









, Beijing 100081, China









, Beijing 100081, China
摘要:The coercivity mechanism of Nd  Fe  B magnets prepared by combination of strip  casting with hydrogen decrepitation techniques was investigated. The microstructure of (Nd    0.935  Dy    0.065  )    14.5  Fe    79.4  B    6.1   magnet was observed. The average grain size is about 6～12 μm. The magnetizing field dependence of the hardmagnetic properties for the (Nd    0.935  Dy    0.065  )    14.5  Fe    79.4  B    6.1   and the temperature dependence of the coercivity for the Nd    14.5  Fe    79.4  B    6.1   were investigated. Results show that the coercivity for magnets  prepared by the combination of strip  casting with hydrogen decrepitation techniques is controlled by the nucleation mechanism.