| 简介 |
PROBLEM TO BE SOLVED : To provide a method for manufacturing a rare earth bond magnet by which a rare earth bond magnet having both of a high orientation degree and a high density can be manufactured by a simple and convenient way.
SOLUTION : A method for manufacturing a rare earth bond magnet comprises : a preparation step for preparing a powder mixture including anisotropic magnet powder having anisotropic magnet particles 11 made of a rare earth-iron based alloy and having crystal magnetic anisotropy, and binding powder having binding particles 12 for binding the anisotropic magnet powder; and a shaping step for making a mold molding the powder mixture by compression while applying a magnetic field thereto. The binding powder, of which the content is 0.7 to less than 3.0 mass%, has a hollow shape which allows spaces among the anisotropic magnet particles to be held before the compression molding. After the compression molding, the binding powder is pressed by the anisotropic magnet particles and thus, expanded along the spaces among the anisotropic magnet particles.
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