| 简介 |
PROBLEM TO BE SOLVED : To provide a rare earth magnet with a high coercive force, while suppressing a deterioration of a residual magnetic flux density, moreover to provide a manufacturing method for simply manufacturing the rare earth magnet with a uniform magnetic characteristic.
SOLUTION : The rare earth magnet is a magnet formed through at least hot molding and contains : crystal grains including an R2X14B phase used as a main phase; and a grain boundary phase surrounding the peripheries of the crystal grains (R is at least one sort selected from Nd, Pr, Dy, Tb and Ho, and X is Fe or Fe with a part being substituted by Co), wherein an element RH is more concentrated in the grain boundary phase by the crystal grains (RH is at least one sort selected from Dy, Tb, and Ho), and the element RH resides with a substantially constant concentration distribution from a surface part of the magnet to a central part of the magnet.
COPYRIGHT : (C)2011, JPO&INPIT |
客服热线：
手机版
二维码
