TY  - CONF
AU  - Bram, Martin
AU  - Keszler, Monica
AU  - Grosswendt, Felix
AU  - Assmann, Anne-Caroline
AU  - Krengel, Martin
AU  - Maccari, Fernando
AU  - Gutfleisch, Oliver
AU  - Sebold, Doris
AU  - Guillon, Olivier
AU  - Weber, Sebastian
TI  - Utilizing Field Assisted Sintering for the Recycling of Hot-Deformed Nd-Fe-B Scrap
M1  - FZJ-2024-05886
PY  - 2024
AB  - With growing interest in electric vehicles and renewable energy, recycling of Nd-Fe-B magnets will continue to become ongoing challenge for the goal of a circular economy. Due to the microstructure necessary for hot-deformed Nd-Fe-B permanent magnets, state-of-the-art magnet production methods have limitations with regards to the direct recycling of scrap magnet particles with anisotropic microstructure. Recent work has shown that a combination of pre-sintering by Field Assisted Sintering Technology/Spark Plasma Sintering (FAST/SPS) and hot deformation by Flash Spark Plasma Sintering (Flash SPS) has can potentially produce Nd-Fe-B magnets directly from 100% scrap material. A systematic study was done to consolidate a combination of recycled magnet particles and melt-spun powder into a Flash SPS deformed magnet, using a range of weight percentages of scrap material and scrap particle size fractions. In some cases, HcJ of >1400 kAm-1 and Br of 1.1 T could be achieved with 20 wt.% scrap material. The relationship between oxygen uptake, particle size fraction, and percentage of recyclate in a final magnet are all explored and discussed in comparison to magnets produced with pristine material.
T2  - Materials Science and Engineering
CY  - 24 Sep 2024 - 26 Sep 2024, Darmstadt (Germany)
Y2  - 24 Sep 2024 - 26 Sep 2024
M2  - Darmstadt, Germany
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/1031879
ER  -