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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Burkhardt, Carlo
Jožef Stefan International Postgraduate School
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Production of Permanent Magnets from Recycled NdFeB Powder with Powder Extrusion Mouldingcitations
- 2024Sinter-Based Additive Manufacturing of Ni-Ti Shape Memory Alloy
- 2021Powder content in powder extrusion moulding of tool steelcitations
- 2017Isotropic NdFeB hard magnets
- 2017SHAPING, DEBINDING AND SINTERING OF STEEL COMPONENTS VIA FUSED FILAMENT FABRICATION
- 2017The SDS process: A viable way for the production of metal parts
- 2017Special Binder Systems for Metal Powders in Highly Filled Filaments for Fused Filament Fabrication
- 2017Fused Filament Fabrication for the production of metal and/or ceramic parts and feedstocks therefore
- 2017The production of magnets by FFF - Fused Filament Fabrication
- 2017Metal Injection Moulding for the Production of Recycled Rare Earth Magnets
- 2016Metal Injection Moulding of NdFeB Based on Recycled Powders
- 2016Metal Injection Moulding of NdFeB based on Recycled Powders
Places of action
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article
Production of Permanent Magnets from Recycled NdFeB Powder with Powder Extrusion Moulding
Abstract
In the last fifteen years, several groups have investigated metal injection moulding (MIM) of NdFeB powder to produce isotropic or anisotropic rare earth magnets of greater geometric complexity than that achieved by the conventional pressing and sintering approach. However, due to the powder’s high affinity for oxygen and carbon uptake, sufficient remanence and coercivity remains difficult. This article presents a novel approach to producing NdFeB magnets from recycled material using Powder Extrusion Moulding (PEM) in a continuous process. The process route uses powder obtained from recycling rare earth magnets through Hydrogen Processing of Magnetic Scrap (HPMS). This article presents the results of tailored powder processing, the production of mouldable feedstock based on a special binder system, and moulding with PEM to produce green and sintered parts. The magnetic properties and microstructures of debinded and sintered samples are presented and discussed, focusing on the influence of filling ratio and challenging processing conditions on interstitial content as well as density and magnetic properties.