Self-organized nanorods in disproportionated Sm2Fe17 and NdFe10.5Mo1.5 alloys

Abstract Self-organized rod-like disproportionation microstructures were obtained in Sm 2 Fe 17 alloy by modifying the hydrogenation disproportionation desorption recombination (HDDR) process. The SmH 2 nanorods are uniformly embedded in a Fe matrix. All the SmH 2 are oriented along the same direction, and show a certain orientation relationship with the Fe matrix. Similar morphology was also observed in the disproportionated products of the NdFe 10.5 Mo 1.5 alloy. However, for both Sm 2 Fe 17 and NdFe 10.5 Mo 1.5 alloys, no crystallographic orientation relationship is found between the recombined grains and the corresponding disproportionated products, and there is no crystal texture in the HDDR treated magnetic powders.