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The effects of hydrogenation before nitrogenization of Sm_2Fe_(17) alloy on structure andmagnetic properties of Sm_2Fe_(17)N_x powder are studied in this paper.The unit cell volume ofSm_2Fe_(17)increases by about 3.6% and many cracks occur in Sm_2Fe_(17) particles during the process of hydrogenation.The Sm_2Fe_(17)N_x powder treaed by hydrogenation thennitrogenization has the higher content of N and the better intrinsic and technological magnetic properties than that treated by nitrogenization directly.
The effects of hydrogenation before nitrogenization of Sm_2Fe_ (17) alloy on the structure and magnetic properties of Sm_2Fe_ (17) N_x powders are studied in this paper.The unit cell volume of Sm_2Fe_ (17) increases by about 3.6% and many cracks occur in Sm_2Fe_ (17) ) particles during the process of hydrogenation. Sm_2Fe_ (17) N_x powder treaed by hydrogenation then nitrogenation has the higher content of N and the better intrinsic and technological magnetic properties than that treated by nitrogenization directly.