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Additive Manufacturing of Bulk Nanocrystalline FeNdB Based Permanent Magnets

Lab scale additive manufacturing of Fe-Nd-B based powders was performed to realize bulk nanocrystalline Fe-Nd-B based permanent magnets. For fabrication a special inert gas process chamber for laser powder bed fusion was used. Inspired by the nanocrystalline ribbon structures, well-known from melt-s...

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Autores principales: Goll, Dagmar, Trauter, Felix, Bernthaler, Timo, Schanz, Jochen, Riegel, Harald, Schneider, Gerhard
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8150944/
https://www.ncbi.nlm.nih.gov/pubmed/34068517
http://dx.doi.org/10.3390/mi12050538
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author Goll, Dagmar
Trauter, Felix
Bernthaler, Timo
Schanz, Jochen
Riegel, Harald
Schneider, Gerhard
author_facet Goll, Dagmar
Trauter, Felix
Bernthaler, Timo
Schanz, Jochen
Riegel, Harald
Schneider, Gerhard
author_sort Goll, Dagmar
collection PubMed
description Lab scale additive manufacturing of Fe-Nd-B based powders was performed to realize bulk nanocrystalline Fe-Nd-B based permanent magnets. For fabrication a special inert gas process chamber for laser powder bed fusion was used. Inspired by the nanocrystalline ribbon structures, well-known from melt-spinning, the concept was successfully transferred to the additive manufactured parts. For example, for Nd16.5-Pr1.5-Zr2.6-Ti2.5-Co2.2-Fe65.9-B8.8 (excess rare earth (RE) = Nd, Pr; the amount of additives was chosen following Magnequench (MQ) powder composition) a maximum coercivity of µ(0)H(c) = 1.16 T, remanence J(r) = 0.58 T and maximum energy density of (BH)(max) = 62.3 kJ/m(3) have been achieved. The most important prerequisite to develop nanocrystalline printed parts with good magnetic properties is to enable rapid solidification during selective laser melting. This is made possible by a shallow melt pool during laser melting. Melt pool depths as low as 20 to 40 µm have been achieved. The printed bulk nanocrystalline Fe-Nd-B based permanent magnets have the potential to realize magnets known so far as polymer bonded magnets without polymer.
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spelling pubmed-81509442021-05-27 Additive Manufacturing of Bulk Nanocrystalline FeNdB Based Permanent Magnets Goll, Dagmar Trauter, Felix Bernthaler, Timo Schanz, Jochen Riegel, Harald Schneider, Gerhard Micromachines (Basel) Article Lab scale additive manufacturing of Fe-Nd-B based powders was performed to realize bulk nanocrystalline Fe-Nd-B based permanent magnets. For fabrication a special inert gas process chamber for laser powder bed fusion was used. Inspired by the nanocrystalline ribbon structures, well-known from melt-spinning, the concept was successfully transferred to the additive manufactured parts. For example, for Nd16.5-Pr1.5-Zr2.6-Ti2.5-Co2.2-Fe65.9-B8.8 (excess rare earth (RE) = Nd, Pr; the amount of additives was chosen following Magnequench (MQ) powder composition) a maximum coercivity of µ(0)H(c) = 1.16 T, remanence J(r) = 0.58 T and maximum energy density of (BH)(max) = 62.3 kJ/m(3) have been achieved. The most important prerequisite to develop nanocrystalline printed parts with good magnetic properties is to enable rapid solidification during selective laser melting. This is made possible by a shallow melt pool during laser melting. Melt pool depths as low as 20 to 40 µm have been achieved. The printed bulk nanocrystalline Fe-Nd-B based permanent magnets have the potential to realize magnets known so far as polymer bonded magnets without polymer. MDPI 2021-05-10 /pmc/articles/PMC8150944/ /pubmed/34068517 http://dx.doi.org/10.3390/mi12050538 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Goll, Dagmar
Trauter, Felix
Bernthaler, Timo
Schanz, Jochen
Riegel, Harald
Schneider, Gerhard
Additive Manufacturing of Bulk Nanocrystalline FeNdB Based Permanent Magnets
title Additive Manufacturing of Bulk Nanocrystalline FeNdB Based Permanent Magnets
title_full Additive Manufacturing of Bulk Nanocrystalline FeNdB Based Permanent Magnets
title_fullStr Additive Manufacturing of Bulk Nanocrystalline FeNdB Based Permanent Magnets
title_full_unstemmed Additive Manufacturing of Bulk Nanocrystalline FeNdB Based Permanent Magnets
title_short Additive Manufacturing of Bulk Nanocrystalline FeNdB Based Permanent Magnets
title_sort additive manufacturing of bulk nanocrystalline fendb based permanent magnets
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8150944/
https://www.ncbi.nlm.nih.gov/pubmed/34068517
http://dx.doi.org/10.3390/mi12050538
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