Boosting Coercivity of 3D Printed Hard Magnets through Nano-Modification of the Powder Feedstock.

ABSTRACT: The demand for strong, compact permanent magnets essential for the energy transition drives innovation in magnet manufacturing. Additive manufacturing, particularly Powder Bed Fusion of metals using a laser beam (PBF-LB/M), offers potential for near-net-shaped Nd-Fe-B permanent magnets but often falls short compared to conventional methods. A less explored strategy to enhance these magnets is feedstock modification with nanoparticles. It is demonstrated that modifying a Nd-Fe-B-based feedstock with 1 wt.% Ag nanoparticles boost the coercivity of the magnets to a record value of 935 ± 6 kA m^-1 without further post-processing or heat treatments. Suitable volumetric energy densities for the PBF-LB/M process are determined using finite element simulations predicting melt pool behavi

SUBMITTER: Gabriel P 

PROVIDER: S-EPMC11633474 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature