| 摘要 |
PURPOSE:To obtain the powder, to be used for rare-earth plastic magnet, having high magnetic field orientational property, high coercive force and excellent oxidation- resisting property by a method wherein an organic electroplated layer is provided on the surface of the alloy powder, having an intermetallic compound consisting of a rare-earth element containing Y, a transition metal and B, as the main phase. CONSTITUTION:An organic electroplated layer is provided on the surface of R-T-B alloy powder, having an R2T14B (R is the rare-earth element containing Y, and T is a transition metal) intermitallic compound, as the main phase. Said organic electroplated layer contains a metal layer containing at least a kind of R-T and R-T-B, and also at least a kind of Ni, Al, Cu, Zn, Co, Fe, Mo and Ti. After R-T and R-T-B alloy, having R-metal or R-rich phase as the main phase, has been organically electroplated on the R-T-B powder having Nd2Fe14B phase as the main phase, a metal or an alloy having resistance to oxidation such as Ni, Cu, Al and the like is plated in addition to the above-mentioned plating. As a result, the powder for plastic magnet having excellent magnet characteristics and corrosion resistance can be manufactured. |
