Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.

Sarriegui-Estupiñan, G.C. (Gabriela Carolina)|||/items/dc5fd271-73ee-415e-b362-71926293c197; Degri, M. (Malik)|||/items/08bb9a1c-d46a-4393-b1e4-648ff7275fe6; Ipatov, M.S. (Mihail S.)|||/items/081f4f27-d454-462d-9fc0-83f7cc6ac288; Pickering, L. (Lydia)|||/items/f1134d07-a5be-45b3-8272-a682f3d439ae; Burgos-García, N. (Nerea)|||/items/471cf51d-4042-47a3-af6d-7cd53c0bd88d; Sheridan, R. (Richard)|||/items/6d7b9353-0450-4dbe-a303-9b567099b144; Walton, A. (Allan)|||/items/5b894e58-48b4-4aa6-b6d0-2bd05bd05546; Martín-García, J.M. (José Manuel)|||/items/be8708bf-a29e-43bc-a020-526c91a7ee83; González, J. (Julián)|||/items/d6f45b5d-6f60-42fd-ba96-ad6ea0ab3cbe

Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.

This work presents an innovative approach to obtain anisotropic Nd-Fe-B powder from isotropic gas atomized powder. The new process was developed using a ternary Nd-Fe-B alloy, without the requirement for additional heavy rare earth or other critical raw materials. It comprises the following steps: (...

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Detalles Bibliográficos
Autores:	Sarriegui-Estupiñan, G.C. (Gabriela Carolina)\|\|\|/items/dc5fd271-73ee-415e-b362-71926293c197, Degri, M. (Malik)\|\|\|/items/08bb9a1c-d46a-4393-b1e4-648ff7275fe6, Ipatov, M.S. (Mihail S.)\|\|\|/items/081f4f27-d454-462d-9fc0-83f7cc6ac288, Pickering, L. (Lydia)\|\|\|/items/f1134d07-a5be-45b3-8272-a682f3d439ae, Burgos-García, N. (Nerea)\|\|\|/items/471cf51d-4042-47a3-af6d-7cd53c0bd88d, Sheridan, R. (Richard)\|\|\|/items/6d7b9353-0450-4dbe-a303-9b567099b144, Walton, A. (Allan)\|\|\|/items/5b894e58-48b4-4aa6-b6d0-2bd05bd05546, Martín-García, J.M. (José Manuel)\|\|\|/items/be8708bf-a29e-43bc-a020-526c91a7ee83, González, J. (Julián)\|\|\|/items/d6f45b5d-6f60-42fd-ba96-ad6ea0ab3cbe
Tipo de recurso:	artículo
Fecha de publicación:	2024
País:	España
Institución:	Universidad de Navarra
Repositorio:	Dadun. Depósito Académico Digital de la Universidad de Navarra
Idioma:	inglés
OAI Identifier:	oai:dadun.unav.edu:10171/70180
Acceso en línea:	https://hdl.handle.net/10171/70180
Access Level:	acceso abierto
Palabra clave:	Hydrogen absorbing materials. Permanent magnets. Rare earth alloys and compounds. Crystal growth. Powder metallurgy. Magnetic measurements.

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spelling	Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.Sarriegui-Estupiñan, G.C. (Gabriela Carolina)\|\|\|/items/dc5fd271-73ee-415e-b362-71926293c197Degri, M. (Malik)\|\|\|/items/08bb9a1c-d46a-4393-b1e4-648ff7275fe6Ipatov, M.S. (Mihail S.)\|\|\|/items/081f4f27-d454-462d-9fc0-83f7cc6ac288Pickering, L. (Lydia)\|\|\|/items/f1134d07-a5be-45b3-8272-a682f3d439aeBurgos-García, N. (Nerea)\|\|\|/items/471cf51d-4042-47a3-af6d-7cd53c0bd88dSheridan, R. (Richard)\|\|\|/items/6d7b9353-0450-4dbe-a303-9b567099b144Walton, A. (Allan)\|\|\|/items/5b894e58-48b4-4aa6-b6d0-2bd05bd05546Martín-García, J.M. (José Manuel)\|\|\|/items/be8708bf-a29e-43bc-a020-526c91a7ee83González, J. (Julián)\|\|\|/items/d6f45b5d-6f60-42fd-ba96-ad6ea0ab3cbeHydrogen absorbing materials.Permanent magnets.Rare earth alloys and compounds.Crystal growth.Powder metallurgy.Magnetic measurements.This work presents an innovative approach to obtain anisotropic Nd-Fe-B powder from isotropic gas atomized powder. The new process was developed using a ternary Nd-Fe-B alloy, without the requirement for additional heavy rare earth or other critical raw materials. It comprises the following steps: (a) gas atomization to produce a polycrystalline isotropic powder; (b) annealing at high temperature to induce grain growth; (c) hydrogen decrepitation to obtain a monocrystalline powder; and (d) hydrogenation-disproportionation-desorptionrecombination to obtain the final ultrafine anisotropic particles. The final particle shape is polygonal, which should improve the injection molding characteristics of current powder. The final powder exhibits both high remanence (0.97 T) and coercivity (1354 kA/m) for laboratory batch sizes, which is a result of its anisotropic ultrafine microstructure. Thus, gas atomization is considered a feasible alternative to casting methods as a first step to produce powders for anisotropic bonded magnet.Dadun. Depósito Académico Digital Universidad de Navarra20242024-10-1620242024-01-0120242024-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10171/70180reponame:Dadun. Depósito Académico Digital de la Universidad de Navarrainstname:Universidad de NavarraInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:dadun.unav.edu:10171/701802026-06-21T12:47:57Z
dc.title.none.fl_str_mv	Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.
title	Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.
spellingShingle	Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder. Sarriegui-Estupiñan, G.C. (Gabriela Carolina)\|\|\|/items/dc5fd271-73ee-415e-b362-71926293c197 Hydrogen absorbing materials. Permanent magnets. Rare earth alloys and compounds. Crystal growth. Powder metallurgy. Magnetic measurements.
title_short	Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.
title_full	Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.
title_fullStr	Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.
title_full_unstemmed	Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.
title_sort	Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.
dc.creator.none.fl_str_mv	Sarriegui-Estupiñan, G.C. (Gabriela Carolina)\|\|\|/items/dc5fd271-73ee-415e-b362-71926293c197 Degri, M. (Malik)\|\|\|/items/08bb9a1c-d46a-4393-b1e4-648ff7275fe6 Ipatov, M.S. (Mihail S.)\|\|\|/items/081f4f27-d454-462d-9fc0-83f7cc6ac288 Pickering, L. (Lydia)\|\|\|/items/f1134d07-a5be-45b3-8272-a682f3d439ae Burgos-García, N. (Nerea)\|\|\|/items/471cf51d-4042-47a3-af6d-7cd53c0bd88d Sheridan, R. (Richard)\|\|\|/items/6d7b9353-0450-4dbe-a303-9b567099b144 Walton, A. (Allan)\|\|\|/items/5b894e58-48b4-4aa6-b6d0-2bd05bd05546 Martín-García, J.M. (José Manuel)\|\|\|/items/be8708bf-a29e-43bc-a020-526c91a7ee83 González, J. (Julián)\|\|\|/items/d6f45b5d-6f60-42fd-ba96-ad6ea0ab3cbe
author	Sarriegui-Estupiñan, G.C. (Gabriela Carolina)\|\|\|/items/dc5fd271-73ee-415e-b362-71926293c197
author_facet	Sarriegui-Estupiñan, G.C. (Gabriela Carolina)\|\|\|/items/dc5fd271-73ee-415e-b362-71926293c197 Degri, M. (Malik)\|\|\|/items/08bb9a1c-d46a-4393-b1e4-648ff7275fe6 Ipatov, M.S. (Mihail S.)\|\|\|/items/081f4f27-d454-462d-9fc0-83f7cc6ac288 Pickering, L. (Lydia)\|\|\|/items/f1134d07-a5be-45b3-8272-a682f3d439ae Burgos-García, N. (Nerea)\|\|\|/items/471cf51d-4042-47a3-af6d-7cd53c0bd88d Sheridan, R. (Richard)\|\|\|/items/6d7b9353-0450-4dbe-a303-9b567099b144 Walton, A. (Allan)\|\|\|/items/5b894e58-48b4-4aa6-b6d0-2bd05bd05546 Martín-García, J.M. (José Manuel)\|\|\|/items/be8708bf-a29e-43bc-a020-526c91a7ee83 González, J. (Julián)\|\|\|/items/d6f45b5d-6f60-42fd-ba96-ad6ea0ab3cbe
author_role	author
author2	Degri, M. (Malik)\|\|\|/items/08bb9a1c-d46a-4393-b1e4-648ff7275fe6 Ipatov, M.S. (Mihail S.)\|\|\|/items/081f4f27-d454-462d-9fc0-83f7cc6ac288 Pickering, L. (Lydia)\|\|\|/items/f1134d07-a5be-45b3-8272-a682f3d439ae Burgos-García, N. (Nerea)\|\|\|/items/471cf51d-4042-47a3-af6d-7cd53c0bd88d Sheridan, R. (Richard)\|\|\|/items/6d7b9353-0450-4dbe-a303-9b567099b144 Walton, A. (Allan)\|\|\|/items/5b894e58-48b4-4aa6-b6d0-2bd05bd05546 Martín-García, J.M. (José Manuel)\|\|\|/items/be8708bf-a29e-43bc-a020-526c91a7ee83 González, J. (Julián)\|\|\|/items/d6f45b5d-6f60-42fd-ba96-ad6ea0ab3cbe
author2_role	author author author author author author author author
dc.contributor.none.fl_str_mv	Dadun. Depósito Académico Digital Universidad de Navarra
dc.subject.none.fl_str_mv	Hydrogen absorbing materials. Permanent magnets. Rare earth alloys and compounds. Crystal growth. Powder metallurgy. Magnetic measurements.
topic	Hydrogen absorbing materials. Permanent magnets. Rare earth alloys and compounds. Crystal growth. Powder metallurgy. Magnetic measurements.
description	This work presents an innovative approach to obtain anisotropic Nd-Fe-B powder from isotropic gas atomized powder. The new process was developed using a ternary Nd-Fe-B alloy, without the requirement for additional heavy rare earth or other critical raw materials. It comprises the following steps: (a) gas atomization to produce a polycrystalline isotropic powder; (b) annealing at high temperature to induce grain growth; (c) hydrogen decrepitation to obtain a monocrystalline powder; and (d) hydrogenation-disproportionation-desorptionrecombination to obtain the final ultrafine anisotropic particles. The final particle shape is polygonal, which should improve the injection molding characteristics of current powder. The final powder exhibits both high remanence (0.97 T) and coercivity (1354 kA/m) for laboratory batch sizes, which is a result of its anisotropic ultrafine microstructure. Thus, gas atomization is considered a feasible alternative to casting methods as a first step to produce powders for anisotropic bonded magnet.
publishDate	2024
dc.date.none.fl_str_mv	2024 2024-10-16 2024 2024-01-01 2024 2024-01-01
dc.type.none.fl_str_mv	journal article http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv	info:eu-repo/semantics/article
format	article
dc.identifier.none.fl_str_mv	https://hdl.handle.net/10171/70180
url	https://hdl.handle.net/10171/70180
dc.language.none.fl_str_mv	Inglés eng
language_invalid_str_mv	Inglés
language	eng
dc.rights.none.fl_str_mv	open access http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv	info:eu-repo/semantics/openAccess
rights_invalid_str_mv	open access http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	application/pdf
dc.source.none.fl_str_mv	reponame:Dadun. Depósito Académico Digital de la Universidad de Navarra instname:Universidad de Navarra
instname_str	Universidad de Navarra
reponame_str	Dadun. Depósito Académico Digital de la Universidad de Navarra
collection	Dadun. Depósito Académico Digital de la Universidad de Navarra
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Development of anisotropic Nd-Fe-B powder from isotropic gas atomized powder.

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