The rare-earth permanent magnet

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PROBLEM TO BE SOLVED : To provide a simple manufacturing method for a high-density R-Fe-B quench bulk magnet of excellent magnet property and high electric resistance. SOLUTION : An insulating-component coated powder is manufactured by forming an insulating layer comprising an insulating component whose volume resistivity is at least 1×10-1Ωcm on a surface of each of particles constituting a quench alloy powder for manufacturing an R-Fe-B quench magnet by a dry method in an inert gas atmosphere or in vacuum. Then, the insulating-component coated powder as an initial material is hot molded under a pressure of at least 10 MPa at 400-850°C to obtain a high-density bulk magnet of 6.5 g/cm3or higher in density which at least comprises a magnet and an insulating component. COPYRIGHT : (C)2003, JPO