Structural and magnetic engineering of (Nd, Pr, Dy, Tb)-Fe-B sintered magnets with Tb3Co0.6Cu0.4Hx composition in the powder mixture

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F20%3A10243543" target="_blank" >RIV/61989100:27360/20:10243543 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0304885319330884" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0304885319330884</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmmm.2019.166220" target="_blank" >10.1016/j.jmmm.2019.166220</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structural and magnetic engineering of (Nd, Pr, Dy, Tb)-Fe-B sintered magnets with Tb3Co0.6Cu0.4Hx composition in the powder mixture

Popis výsledku v původním jazyce

High-coercivity Nd-Fe-B magnets are required for clean energy applications, particularly for hybrid and electric vehicles. This study was focused on the structural design of a Nd2Fe14B-based magnet by precise engineering of its microstructure, which included grain-boundary diffusion and grain-boundary structuring processes, through the introduction of a hydrogenated Tb3Co0.6Cu0.4Hx composition in the powder mixture. A low-rare-earth-metal strip-cast Nd-24.0, Pr-6.5, Dy-0.5, B-1.0, Al-0.2, Fe-balance (wt.%) alloy was used as the base component of the powder mixture. The distributions of the components of the blended powder mixture in the sintered magnet with the added 2 wt% of Tb3Co0.6Cu0.4Hx and stability of the structure-sensitive magnetic parameter (coercive force) during a low-temperature heat treatment were studied. The sample exhibited a high coercive force up to 1480 kA/m at a heavy rare-earth element content in the 2-14-1 phase of similar to 1 at.%.

Název v anglickém jazyce

Structural and magnetic engineering of (Nd, Pr, Dy, Tb)-Fe-B sintered magnets with Tb3Co0.6Cu0.4Hx composition in the powder mixture

Popis výsledku anglicky

High-coercivity Nd-Fe-B magnets are required for clean energy applications, particularly for hybrid and electric vehicles. This study was focused on the structural design of a Nd2Fe14B-based magnet by precise engineering of its microstructure, which included grain-boundary diffusion and grain-boundary structuring processes, through the introduction of a hydrogenated Tb3Co0.6Cu0.4Hx composition in the powder mixture. A low-rare-earth-metal strip-cast Nd-24.0, Pr-6.5, Dy-0.5, B-1.0, Al-0.2, Fe-balance (wt.%) alloy was used as the base component of the powder mixture. The distributions of the components of the blended powder mixture in the sintered magnet with the added 2 wt% of Tb3Co0.6Cu0.4Hx and stability of the structure-sensitive magnetic parameter (coercive force) during a low-temperature heat treatment were studied. The sample exhibited a high coercive force up to 1480 kA/m at a heavy rare-earth element content in the 2-14-1 phase of similar to 1 at.%.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20500 - Materials engineering

Projekt

<a href="/cs/project/LTARF18031" target="_blank" >LTARF18031: Vývoj fyzikálně-chemických a inženýrských základů pro iniciaci inovativní úsporné technologie výroby vysoce výkonných permanentních magnetů na bázi (Nd,R)-Fe-B (R = Pr, Tb, Dy, Ho) s nízkým obsahem kovů vzácných zemin</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of magnetism and magnetic materials

ISSN

0304-8853

e-ISSN

—

Svazek periodika

498

Číslo periodika v rámci svazku

166220

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

000504845300112

EID výsledku v databázi Scopus

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