公开(公告)号：US4842656A

公开(公告)日：1989-06-27

申请号：US62533

申请日：1987-06-12

申请人： James R. Maines ,  David Arnold

发明人： James R. Maines ,  David Arnold

IPC分类号： C22C1/04 ,  H01F1/057

CPC分类号： C22C1/0441 ,  H01F1/0571

摘要： Magnetically anisotropic powder having high coercivity and containing the magnetic phase Nd.sub.2 Fe.sub.14 B is produced by melt spinning a composition of these elements to form amorphous or extremely finely crystalline particles which are hot worked to produce grains containing the above phase and having dimensions in the range of about 20 to 500 nanometers. When the hot worked body is comminuted to powder, the resultant particles are magnetically anisotropic and have appreciable coercivity at room temperature.

摘要翻译： 通过将这些元素的组合物熔融纺丝以产生无定形或非常细晶的颗粒，其被热加工以产生含有上述相的晶粒并且具有在约20的范围内的尺寸，从而产生具有高矫顽力并含有磁性相Nd 2 Fe 14 B的磁各向异性粉末 至500纳米。 当热加工体被粉碎成粉末时，所得颗粒是磁性各向异性的并且在室温下具有明显的矫顽力。