The Optimization of Calciothermic Reduction-Diffusion Process for Preparation of High-Performance Sm_2Fe_(17)N_x Magnetic Powder

摘要

Calciothermic reduction-diffusion (CRD) method was employed to prepare the Sm_2Fe_(17) powder. By using CRD method, single-phase Sm_2Fe_(17) powders were successfully produced and no α-Fe phase detected. And subsequent suitable nitrogenation treatment after CRD process enabled us to obtain Sm_2Fe_(17)N_x magnetic powders. However, the magnetic performance of the powders was below expectation due to their large particle size. Further study on effective milling process is needed.