Strategy for Co-Enhancement of Remanence-Coercivity of RE-Fe-B Sintered Magnets with High Ce-Content: Appropriate La Substitution.

ABSTRACT: The development of low-cost RE-Fe-B sintered magnets with large La/Ce content is of great significance for the balanced utilization of rare earth (RE) resources, but it is limited by reduced magnetic properties. In this work, the coercivity (H_cj ), remanence (B_r ), maximum energy product [(BH)_max ], and temperature stability are simultaneously enhanced for magnets with LaCe accounting for 40 wt% of the total RE. The synergistic regulation of the REFe₂ phase, Ce-valence, and grain boundaries (GBs) in RE-Fe-B sintered magnets is realized for the first time by introducing appropriate La elements. The La elements inhibit the generation of the REFe₂ phase and tend to stay in the triple junctions, promoting the segregation of the RE/Cu/Ga el

SUBMITTER: Chen H 

PROVIDER: S-EPMC10238191 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature