Method of manufacturing rare-earth bond magnet

Abstract

A method of manufacturing a rare-earth bond magnet is provided, by which magnetic properties and mechanical properties of a magnet are improved. In a method of manufacturing a rare-earth bond magnet, a mixture including rare-earth magnet powder, thermosetting resin, and an additive is subjected to compression molding, and a compact is irradiated with a microwave, so that the thermosetting resin is cured using heat generated by the rare-earth magnet powder.

1 . A method of manufacturing a rare-earth bond magnet:
 compression molding a mixture of rare-earth magnet powder and thermosetting resin, and   irradiating a microwave whereby the resin is cured by heat generated by the powder.   
     
     
         2 . The method of manufacturing a rare-earth bond magnet according to  claim 1 :
 further comprising cooling by vacuum or an inert gas.   
     
     
         3 . The method of manufacturing a rare-earth bond magnet according to  claim 1 :
 wherein the frequency of the microwave is 1 GHz to 30 GHz.   
     
     
         4 . The method of manufacturing a rare-earth bond magnet according to  claim 1 :
 wherein the average grain diameter of the rare-earth magnet powder is 2 to 150 μm.   
     
     
         5 . The method of manufacturing a rare-earth bond magnet according to  claim 1 :
 wherein the irradiating is irradiated at an atmosphere containing nitrogen atoms.