| 摘要 |
PURPOSE:To obtain a permanent magnet material contg. a rare earth element and having a much larger maximum energy product by regulating the N content in a rare earth element-iron type permanent magnet material having a specified composition. CONSTITUTION:This permanent magnet material is represented by general formula I or II, wherein R is one or more kinds of rare earth elements, X is one or more among B, C, Si and P, 0.60<=alpha<=0.85, 0<beta<0.15, 0.0005<=gamma<=0.01, M is one or more among Ti, Zr, Hf, V, Nb, Ta, Cr, No, W and Al and 0<delta<=0.10. Because of the regulated N content, the coercive force (BHC, IHC) can be improved and the maximum energy product [(BH)max] is further increased. |
