METHOD FOR MANUFACTURING RARE EARTH MAGNET

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PROBLEM TO BE SOLVED : To provide a method for manufacturing a rare earth magnet, capable of manufacturing a rare earth magnet excellent in squareness and high in maximum energy product. SOLUTION : A method for manufacturing a rare earth magnet includes : a first step of obtaining selected magnetic powder Q by removing magnetic powder having a particle size of less than 50 μm among magnetic powder comprising a main phase of an RE-T-B system (RE represents at least one of Nd, Pr and Y, and T represents Fe or one obtained by substituting a part of Fe with Co) and a grain boundary phase around the main phase, mixing modified alloy powder T comprising an RE-M alloy (M represents a transition metal element or a typical metal element, and RE may comprise RE1-RE2 where RE1 and RE2 represent at least one of Nd, Pr and Y) having a melting point of 700°C or below with the selected magnetic powder Q, and performing hot press working to manufacture a compact S; and a second step of subjecting the compact S to a hot plasticity processing to manufacture a rare earth magnet C. COPYRIGHT : (C)2013, JPO&INPIT