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Recycling of waste sintered Nd-Fe-B permanent magnets by doping DyH 3 nanoparticles was investigated. The effect of the Dy H3 nanoparticles on the microstructure and magnetic properties of the recycled magnets was studied. As the DyH 3 nanoparticles additive increased, the coercivity of recycled magnet increased gradually. The recycled magnets with Dy H3 nanoparticle content between 0.0 wt.% and 1.0 wt.% maintained the remanence(Br), but, with higher additions, the Br began to decrease rapidly. The best recycled magnet produced contained 1.0 wt.% of DyH 3 nanoparticles when compared to the properties of the starting waste sintering magnet. The Hcj, Br and(BH)max values of 101.7%, 95.4%, and 88.58%, respectively, were recovered.
Recycling of waste sintered Nd-Fe-B permanent magnets by doping DyH 3 nanoparticles was investigated. The effect of the Dy H3 nanoparticles on the microstructure and magnetic properties of the recycled fibers was studied. As the DyH 3 nanoparticles additive increased, the coercivity of Recycled magnets with gradual reduction. Recycled magnets with gradual reduction. Recycled magnets with gradually added. %. The Hcj, Br and (BH) max values of 101.7%, 95.4%, and 88.58%, respectively, were recovered.