| 摘要 |
PURPOSE:To lower the temperature coefficient of coercive force by making the structure of a magnet two phases of separation type consisting of RE2TM114 BNx and RETM1112-yAyNz. CONSTITUTION:Molten metal of alloy consisting of the composition of RE2TM114 BNx (here, RE: at least one kind or more being selected from among Y, Sc, and lanthanoid, TM: one kind or more being selected from among Fe, Co, and Ni, A: at least one kind being selected from among Ti, V, Zr, Mo, Nb, Ta, Cr, W, Mn, Zn, Ca, Ga, Al, In, Si, Ge, Sn, and Pb, 0.3<=a<=0.85, 0.05<=b<=0.2, 0.01<=c<=0.01) is quenched into a substantially amorphous structure of alloy composition. This is the manufacture of a permanent magnet of rare earth- transition metal base, which applies nitriding treatment at a temperature of 500-800 deg.C after annealing it at 500-1000 deg.C. Hereby, a permanent magnet excellent in magnetic property and also excellent in stability to heat and high in reliability can be obtained. |
