| 摘要 |
PURPOSE:To obtain a resin-bonded magnet which is enhanced in magnet density and magnetic characteristics as required and high in dimensional accuracy and uniformity by a method wherein magnetic particles are coated with a surface layer, mixed with resin, and molded into a magnet. CONSTITUTION:Nd-Fe-B magnetic particles A are coated with a surface film B through a Ni-W electroplating method. This magnetic powder is mixed well with a prescribed amount of thermosetting resin, compression-molded by a prescribed pressure, and then magnetized. When Ni-W deposited on the magnetic powder is increased in content, a magnet increases in magnet density, and when a surface film is increased in content to 30% by volume, a neodymium-iron resin-bonded magnet possessed of the same magnet density and the same magnetic flux density as an Sm-Go magnet has can be obtained. |
