RARE EARTH BASED BOND MAGNET AND ITS MANUFACTURING METHOD

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PROBLEM TO BE SOLVED : To provide a rare earth based bond magnet which is excellent in orientation, shows high magnetic property by reducing heat demagnetizing factor, is excellent in anticorrosion property by reducing generation of a hole in the surface and the inside of a magnet, and suitably exemplifies magnetic anisotropic rare earth based bond magnet; and to provide its manufacturing method. SOLUTION : The rare earth based bond magnet consists of rare earth based magnet powder, resin binder and almost spherical organic fine particle of an average particle diameter of 0.5 to 50 μm, and is formed to a prescribed shape. In the manufacturing method, for example, almost spherical organic fine particle of an average particle diameter of 0.5 to 50 μm is mixed with a compound for powder granular bond magnet prepared by kneading rare earth based magnet powder and resin binder, and the obtained mixture is subjected to compression and molding, and is molded to a prescribed shape. The obtained molded item is heated and hardened as required. COPYRIGHT : (C)2006, JPO&NCIPI