中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 10 No. 1 February 2000 |
（Department of Materials Science and Engineering, BeijingPolytechnic University, Beijing100022, P.R.China）
Abstract:Mechanical milling has been applied to prepare Nd-Fe-Mo magnetic powders. For preparing the single-phase Nd1.5Fe10.5Mo1.5compounds with ThMn12-type structure, a mixture of amorphous phase andα-Fe was obtained by ball milling for 4~18 h. In the process of ball milling, the powders went through breaking and recombining, which were closely related to amorphous formation. The powders of nanostructured 1∶12 phase was formed after annealing at 700~850℃for 10~40 min. The optimum magnetic properties were obtained with the following nitriding treatment at 500~550℃for 1~2 h.
Key words: ball milling; amorphous powders; multi-particles
