| 摘要 |
PURPOSE:To improve magnetic properties, such as saturation magnetization, anisotropic magnetic field, and Curie temp., by adding specific elements to a (rare earth)-Fe-Co-Si type permanent magnet alloy. CONSTITUTION:The high performance rare earth permanent magnet alloy has a composition represented by RaTbSicMd. In the formula, R is at least one kind among rare earth elements including Y, T is Fe and/or Co, M is at least one element among B, C, N, Al, Ti, V, Cr, Mn, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Re, Rh, Pd, Ag, In, Sn, Sb, Hf, Ta, W, Pt, Au, and Bi, and further, 1<=a<=15% by atom, 0.1<=b<=100-a-c-d%, 5<=c<=30%, and 0.1<=d<=20%. In this alloy, main phase has body-centered tetragonal BaCd11 type crystal structure. The additive element M is an element effective in improving saturation magnetization, anisotropic magnetic field, and Curie temp. |
