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@INPROCEEDINGS{Bram:1031879,
author = {Bram, Martin and Keszler, Monica and Grosswendt, Felix and
Assmann, Anne-Caroline and Krengel, Martin and Maccari,
Fernando and Gutfleisch, Oliver and Sebold, Doris and
Guillon, Olivier and Weber, Sebastian},
title = {{U}tilizing {F}ield {A}ssisted {S}intering for the
{R}ecycling of {H}ot-{D}eformed {N}d-{F}e-{B} {S}crap},
reportid = {FZJ-2024-05886},
year = {2024},
abstract = {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.},
month = {Sep},
date = {2024-09-24},
organization = {Materials Science and Engineering,
Darmstadt (Germany), 24 Sep 2024 - 26
Sep 2024},
subtyp = {Other},
cin = {IMD-2 / JARA-ENERGY},
cid = {I:(DE-Juel1)IMD-2-20101013 / $I:(DE-82)080011_20140620$},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1031879},
}