Coercivity Increase of the Recycled HDDR Nd-Fe-B Powders Doped with DyF and Processed via Spark Plasma Sintering & the Effect of Thermal Treatments.

The magnetic properties of the recycled hydrogenation disproportionation desorption recombination (HDDR) Nd-Fe-B powder, doped with a low weight fraction of DyF nanoparticles, were investigated. Spark plasma sintering (SPS) was used to consolidate the recycled Nd-Fe-B powder blends containing 1, 2, and 5 wt.% of DyF grounded powder.