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利用溶体快淬法研究了Y的添加对Pr_2Fe_(14)B合金磁性能的影响。结果表明:薄带Pr_2Fe_(14)B的最佳铜辊转速为30 m/s。Pr_(12-x)Y_xFe_(84)B_6(x=0~12)快淬薄带主要由各向异性、纳米结构的R_2Fe_(14)B相组成,其矫顽力、剩磁,剩磁比和饱和磁化强度均随着Y含量的增加而减少。Pr_(12-x)Y_xFe_(84)B_6快淬薄带的磁晶各向异性随着Y替代量的增加而降低,导致矫顽力逐渐减少,这是由于Y_2Fe_(14)B的磁晶各向异性低于Pr_2Fe_(14)B。然而,只要Y元素含量不超过4at%,Pr_(12-x)Y_xFe_(84)B_6快淬薄带的退磁化曲线的方形度较好,晶粒间交换耦合作用也比较强。
The effect of Y addition on the magnetic properties of Pr_2Fe_ (14) B alloy was investigated by melt quenching method. The results show that the optimum copper roll speed of Pr 2 Fe 14 B is 30 m / s. The rapidly quenched ribbon of Pr_ (12-x) Y_xFe_ (84) B_6 (x = 0 ~ 12) consists mainly of an anisotropic, nanostructured R_2Fe_ (14) B phase with coercivity, remanence and remanence And saturation magnetization decrease with the increase of Y content. The magnetocrystalline anisotropy of the rapidly pulverized ribbon Pr_ (12-x) Y_xFe_ (84) B_6 decreases with the increase of Y substitution, resulting in the decrease of coercivity. This is because the magnetocrystallites of Y_2Fe_ (14) B The anisotropy is lower than Pr 2 Fe 14 B. However, the demagnetization curves of Pr 12-x Y_xFe 84 B 6 hard quenched ribbons have good squareness and relatively strong intercrystalline exchange coupling as long as the Y content does not exceed 4 at%.