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001031879 037__ $$aFZJ-2024-05886
001031879 1001_ $$0P:(DE-Juel1)129591$$aBram, Martin$$b0$$eCorresponding author$$ufzj
001031879 1112_ $$aMaterials Science and Engineering$$cDarmstadt$$d2024-09-24 - 2024-09-26$$gMSE$$wGermany
001031879 245__ $$aUtilizing Field Assisted Sintering for the Recycling of Hot-Deformed Nd-Fe-B Scrap
001031879 260__ $$c2024
001031879 3367_ $$033$$2EndNote$$aConference Paper
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001031879 520__ $$aWith growing interest in electric vehicles and renewable energy, recycling of Nd-Fe-B magnets will continue to become ongoing challenge for the goal of a circular economy. Due to the microstructure necessary for hot-deformed Nd-Fe-B permanent magnets, state-of-the-art magnet production methods have limitations with regards to the direct recycling of scrap magnet particles with anisotropic microstructure. Recent work has shown that a combination of pre-sintering by Field Assisted Sintering Technology/Spark Plasma Sintering (FAST/SPS) and hot deformation by Flash Spark Plasma Sintering (Flash SPS) has can potentially produce Nd-Fe-B magnets directly from 100% scrap material. A systematic study was done to consolidate a combination of recycled magnet particles and melt-spun powder into a Flash SPS deformed magnet, using a range of weight percentages of scrap material and scrap particle size fractions. In some cases, HcJ of >1400 kAm-1 and Br of 1.1 T could be achieved with 20 wt.% scrap material. The relationship between oxygen uptake, particle size fraction, and percentage of recyclate in a final magnet are all explored and discussed in comparison to magnets produced with pristine material.
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001031879 7001_ $$0P:(DE-Juel1)192300$$aKeszler, Monica$$b1$$ufzj
001031879 7001_ $$0P:(DE-HGF)0$$aGrosswendt, Felix$$b2
001031879 7001_ $$0P:(DE-HGF)0$$aAssmann, Anne-Caroline$$b3
001031879 7001_ $$0P:(DE-HGF)0$$aKrengel, Martin$$b4
001031879 7001_ $$0P:(DE-HGF)0$$aMaccari, Fernando$$b5
001031879 7001_ $$0P:(DE-HGF)0$$aGutfleisch, Oliver$$b6
001031879 7001_ $$0P:(DE-Juel1)129662$$aSebold, Doris$$b7$$ufzj
001031879 7001_ $$0P:(DE-Juel1)161591$$aGuillon, Olivier$$b8$$ufzj
001031879 7001_ $$0P:(DE-HGF)0$$aWeber, Sebastian$$b9
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001031879 9141_ $$y2024
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001031879 9201_ $$0I:(DE-Juel1)IMD-2-20101013$$kIMD-2$$lWerkstoffsynthese und Herstellungsverfahren$$x0
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