New publication based on PASSENGER’s research, now available open access!
Titled “Structural and magnetic properties of rapidly solidified and Bi-bonded hot compacted Mn53.3−xAl45C1.7Tix magnets” and authored by Juan Sebastian Trujillo Hernandez, Fernando Maccari, Jesús Anselmo Tabares, Konstantin Skokov, Germán Antonio Pérez-Alcázar, Oliver Gutfleisch, Semih Ener, the paper has been published in the Journal of Magnetism and Magnetic Materials.
This study examines the impact of Ti doping on the phase formation and #magnetic properties of Mn–Al–C alloys. Using melt spinning, we synthesized Mn53.3−xAl45C1.7Tix alloys (x values ranging from 0 to 1.5) producing high purity ϵ-phase ribbons. The optimal annealing treatment for the formation of ferromagnetic τ-phase is 20 min at 550 °C for all compositions. However, Ti-doped samples showed the formation of β-phase due to partial phase decomposition, and TiC precipitates were present at high Ti concentrations. Upon doping, the Curie temperature was increased from 557K (Ti free sample) to 600K. To improve the coercivity, a combination of ball milling and hot compaction, introducing Bi as a metallic binder, have resulted in increased coercivity from 0.18 T to 0.33 T. Bi addition lead to formation of a grain boundary phase aiding densification. We demonstrate how modifying composition and processing can improve the magnetic properties of Mn–Al based magnets.
https://doi.org/10.1016/j.jmmm.2024.172573.
https://www.sciencedirect.com/science/article/pii/S0304885324008643
#Mn–Al–C–Ti alloys; #Magnetic properties; #Melt spinning; #Hot compaction; #Rare-earth-free #Permanent magnets
Cite as:
J.S. Trujillo Hernández, F. Maccari, J.A. Tabares, K.P. Skokov, G.A. Pérez Alcázar, O. Gutfleisch, S. Ener,
Structural and magnetic properties of rapidly solidified and Bi-bonded hot compacted Mn53.3−xAl45C1.7Tix magnets,
Journal of Magnetism and Magnetic Materials, Volume 610, 2024, 172573, ISSN 0304-8853, https://doi.org/10.1016/j.jmmm.2024.172573.
