| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a decline in the (BH)max of a rare earth bond magnet which is an annular magnet carried in a small motor even if a diameter is reduced (or a length is increased) by using anisotropic Nd<SB>2</SB>Fe<SB>14</SB>B-based rare earth magnet powder. <P>SOLUTION: The self-organized hybrid rare earth bond magnet contains, as essential components, a single nucleus cluster phase [A], the chief of which is the magnetically anisotropic polycrystal-assembled Nd<SB>2</SB>Fe<SB>14</SB>B-based rare earth magnet powder [Aa], a multi-nucleus cluster phase [An], or a mixed phase of these [A+An]; a spherical multi-nucleus cluster phase [A'], the chief of which is magnetically anisotropic single-domain particle type Sm<SB>2</SB>Fe<SB>17</SB>N<SB>3</SB>-based rare earth magnet powder [A'a], and an extension phase [B]; the mixed phase [A+An] and the phase [A']; and chemical contact [C] with the phase [B]. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
