| 摘要 |
PURPOSE:To obtain a rare earth group permanent magnet having not only excellent magnetic characteristics but also superior corrosion resistance by applying the curing agent of a thermo-setting resin onto the surface of the rare earth permanent magnet such as a sintered rare earth magnet, a rare earth plastic magnet, etc. CONSTITUTION:The curing agent of a thermo-setting resin is applied onto the surface of a rare earth permanent magnet such as a sintered rare earth magnet, a rare earth plastic magnet, a rare earth anisotropic magnet, etc. The curing agent of the thermo-setting resin such as phthalic anhydride having carboxy as a curing agent at a time when a main agent consists of an epoxy resin, an aliphatic group amine, an aromatic group amine, etc. is applied onto the surface of a molded form or a sinter composed of a rare earth magnet alloy, thus improving the corrosion resistance of the molded form or the sinter.
|
