Direct preparation of submicron-sized Sm2Fe17 ultra-fine powders by reduction-diffusion technique

A reduction-diffusion method focused on preparation of submicron-sized Sm2Fe17 particles was developed. The effects of calcination of the precursor, the reduction-diffusion temperature, and addition of Ti to the Sm-Fe precursor on the Sm2Fe17 particle size were investigated. Based on the results, a single-phase Sm2Fe17 ultra-fine powder with a size of about 0.6 mu m was successfully prepared by using a combination of the optimal conditions. (C) 2015 Elsevier B.V. All rights reserved.