Injection molded Sm/sub 2/Fe/sub 17/N/sub 3/ anisotropic magnet using reduction and diffusion method

摘要

High performance injection molded Sm/sub 2/Fe/sub 17/N/sub 3/ anisotropic magnet is developed from the powder made by reduction and diffusion method. Remanence, coercivity and maximum energy product are 0.77 T, 0.78 T and 103 kT/m/sup 3/, respectively in the density of 4.77 Mg/m/sup 3/. The temperature coefficient of remanence is -0.07%/K. The initial irreversible flux loss is 5% at 100/spl deg/C at a permanence of two.