| 摘要 |
PURPOSE:To prevent deterioration in magnetic efficiency due to oxidation of an Re-Fe-B magnet and also to contrive improvement both in heat-resisting property and solution-resisting property by a method wherein thermosetting resin such as phenol, unsaturated polyester, melamin, epoxy and the like is used as the resin of bonding material. CONSTITUTION:A rare-earth magnet, which is formed using both magnet powder containing transition metal (containing IIb group), mainly composed of rare-earth element (including Y) and Fe and B element as the basic ingredient, and the thermosetting resin such as phenol and epoxy and the like, is formed by conducting compression molding, injection molding or extrusion molding at the temperature of fused material of magnet powder and resin within the range from the room temperature to 200 deg.C. As a result, the molded magnet is enhanced in performance by preventing the deterioration of magnetic efficiency due to oxidation of magnetic powder when molding, and also water-resisting property, the chemical-resisting property and heat-resisting property of the molded magnet can be improved. |
