Consolidation of Fe16N2 Magnets Using Equal Channel Angular Extrusion.

摘要

ECAE experiments on the Fe16N2 phase materials (containing 3 wt% Mn) showed that: 1. Under the experimental conditions investigated thus far, the best density of the extruded specimens are about 75% of the X-ray density. Extrusions at temperatures up to approximately 150 Degrees C do not have any deteriorating effects on the magnetization values (compared to the powder). However, extrusions at temperatures approximately 150 Degrees C result in a small change in the intrinsic coercivity. 2. The best saturation induction obtained on the extruded specimen is approximately 12.5 kG. The potential to enhance these properties is very high with the selection of Fe16N2 powder that is now available at AMC and with more optimized conditions of extrusion. 3. We have performed very limited extrusions. We believe that there are many more variables we need to examine to improve the density and induce crystal and magnetic texture.