| 摘要 |
PURPOSE:To obtain permanent magnets showing high coercive force and high energy product even in a compositional region with a small content of rare earth element by increasing the density of a specific liquid quenched alloy and by making it anisotropic through plastic deformation. CONSTITUTION:Used is a liquid quenched alloy expressed by Formula Rx (Fe1-w Cow)100-x-y-z-u-v By Tiz Tu Mv where 6<=x<=16, 0<=w<=1, 2<=y<=25, 0<z, 0<u, 0<u+z<=12, 0<v<=5. In the Formula R is at least a kind of rare earth element involving yttrium, T is Nb and/or Mo, and M is at least a kind of Mg, Ag, GA, Sb, Te, Ge, and In. The liquid quenched alloy of this composition is made anisotropic by plastic deformation after increase in density. This process improves coercive force and increases the maximum energy product even in a region with a small content of rare earth element. |
