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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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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. |
format | Online Article Text |
id | pubmed-8150944 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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