| 简介 |
PROBLEM TO BE SOLVED : To provide : a sintered body for forming a rare-earth magnet which is configured in a manner such that the divergence between the orientation angles of the easy axes of magnetization of magnet material particles and the orientation axis angle of the magnet material particles is kept within a prescribed range in an arbitrary micro-section of a magnet cross-section; and a rare-earth sintered magnet.
SOLUTION : A sintered body for forming a rare-earth magnet has at least two regions having axis orientation angles different from each other by 20° or more, given that the orientation axis angle is defined as the highest-frequency orientation angle among the orientation angles B of easy magnetization axes, relative to a pre-set reference line, of a plurality of magnet material particles P in a rectangular area R at an arbitrary position in a plane including a thickness direction and a width direction. A deviation angle of the orientation angle defined based on a difference between the orientation angles of respective easy magnetization axes of the magnet material particles, with respect to the axis orientation angle is 16.0° or less. The area is a rectangular area containing equal to or more than 30, for example, 200 or 300, of magnet material particles, and has a square shape.
SELECTED DRAWING : Figure 1
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