RARE EARTH BOND MAGNET AND ITS MANUFACTURING METHOD

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PROBLEM TO BE SOLVED : To provide a manufacturing method which is performed by a simple processing without kneading, granulation and grading of magnetic powder and thermoplastic and manufactures a rare earth bond magnet having high magnetic performance where [BH]max reaches 11MGOe in manufacture of the rare earth bond magnet by compression molding, in which rare earth magnetic powder is bonded with thermoplastic. SOLUTION : Powdered mixture in which powder of thermoplastic adheres to a surface of rare earth magnet powder is formed by using coupling agent. A warmed press die is filled with powder mixture, a magnet shape is given by warm compression molding and it is cooled in a pressurized state. Thus, the rare earth bond magnet is manufactured. COPYRIGHT : (C)2008, JPO&INPIT