R-Fe-B permanent magnet and its manufacturing method for a porous material

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PROBLEM TO BE SOLVED : To provide a porous material for an R-Fe-B based permanent magnet that exhibits higher magnetic characteristics, particularly, higher squareness compared with a conventional bond magnet and has a higher degree of shape freedom than a conventional sintered magnet. SOLUTION : The method for manufacturing a porous material for an R-Fe-B based permanent magnet includes a process for preparing R-Fe-B based rare-earth alloy powder having an average particle size of COPYRIGHT : (C)2009, JPO&INPIT