| 摘要 |
PURPOSE:To improve the temperature stability of magnetic characteristics by manufacturing a material, wherein the composition is shown by a composition formula Nd1-alphaCealpha(Fe1-xBx)z (wherein, 0.05<=alpha<=0.20, 0.04<=x<=0.2, 4<=z<=7.5), with power metallurgy. CONSTITUTION:A sintered permanent magnet is manufactured with powder metallurgy from a composed material shown by a composition formula R1-alphaR 'alpha(Fe1-xBx)z (wherein, R is a rare earth element except La, Ce, didymium, R' is a combination of one or two of La, Ce, didymium, 0.05<=alpha<=0.20, 0.04<=x<=0.2, 4<=z<=7.5). In this sintered permanent magnet, the composition can be that R is Nd, R' is Ce and part of Nd is substituted with Pr, a composition formula Nd1-alphabetaCealphaPrbeta(Fe1-xBx)z (wherein, 0.05<=alpha<=0.20, 0.05<=beta<=0.30, 0.04<=x<=0.2, 4<=z<=7.5). |
