【摘要】 本文研究了用单辊急冷方法制备的非晶态合金Nd₄Fe_96-xB_x的晶化,以及热处理对其硬磁性和相组成的影响,发现非晶态合金Nd₄Fe_96-xB_x的晶化温度比相同B含量的非晶态合金Fe_100-xBx高120—190K,X射线衍射和热磁测量表明,15≤x≤25的样品晶化相是由Nd₂Fe₁₄B（T₁）,Fe₃B和α-Fe组成,内禀矫顽力_iH_c和磁能积（BH）_max随B含量x的变化显示出一个极大值,x=19的样品在670℃约2min退火后_iH_c=2.8kOe,（BH）_max=12.3MGOe,由于这一材料有较高的剩磁和磁能积,因此可以成为实用的粘结磁体。更多还原

【Abstract】 The effects of heat treatment on the hard magnetic properties and phase components are studied for amorphous Nd4Fe96-xBx alloys prepared by melt quenching technique. The crystallization temperature of amorphous Nd4Fe96-xBx alloys is higher than that of amorphous Fe100-xBx alloys at same B content in the range of 120-190 K. For 15≤x≤25, the samples crystallized from amorphous exhibit the hard magnetic properties, and consist of Nd2Fe14B, Fe3B and α-Fe. It is found that the intrinsic coercivity and magnetic energy product of the samples at optima1 heat treatment show a maximum of 2.8 kOe and 12 MGOe for Nd4Fe77B19 (x=19) alloy annealed at 670℃ for 2 min, respectively. These materials would presumably be used as an inexpensive bonded magnets, due to its higher values of B, and (BH)max.更多还原