Effects of additions and heat treament on the microstructure and magnetic properties of sintered Nd-Fe-B magnets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F13%3A86088442" target="_blank" >RIV/61989100:27360/13:86088442 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effects of additions and heat treament on the microstructure and magnetic properties of sintered Nd-Fe-B magnets

Popis výsledku v původním jazyce

Sintered Nd-Fe-B permanent magnets with an enhanced coercive force were fabricated (i) using the main Nd14,5Dy1,5Fe75Co2B7 alloy and its mixtures with [Dy/Al], Tb2O3, Nd3Co additions and (ii) applying a post-sintering heat treatment of magnets. The average grain size of the Nd2Fe14B phase decreases with increasing contents of [Dy/Al], Tb2O3 and Nd3Co additions and their melting temperatures. The mixing method is effective for all type of additions used. The maximum coercive force magnitudes were reachedafter aging at 550 °C, which was performed after cooling from sintering temperature to room temperature. The same aging performed after cooling from sintering temperature to 550 °C, i.e., without the intermediate cooling does not increase Hci. The correlation between structural changes and hysteretic properties of the heat-treated magnets has been discussed.

Název v anglickém jazyce

Effects of additions and heat treament on the microstructure and magnetic properties of sintered Nd-Fe-B magnets

Popis výsledku anglicky

Sintered Nd-Fe-B permanent magnets with an enhanced coercive force were fabricated (i) using the main Nd14,5Dy1,5Fe75Co2B7 alloy and its mixtures with [Dy/Al], Tb2O3, Nd3Co additions and (ii) applying a post-sintering heat treatment of magnets. The average grain size of the Nd2Fe14B phase decreases with increasing contents of [Dy/Al], Tb2O3 and Nd3Co additions and their melting temperatures. The mixing method is effective for all type of additions used. The maximum coercive force magnitudes were reachedafter aging at 550 °C, which was performed after cooling from sintering temperature to room temperature. The same aging performed after cooling from sintering temperature to 550 °C, i.e., without the intermediate cooling does not increase Hci. The correlation between structural changes and hysteretic properties of the heat-treated magnets has been discussed.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/ED0040%2F01%2F01" target="_blank" >ED0040/01/01: Regionální materiálově technologické výzkumné centrum</a><br>

Návaznosti

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

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2013 : 22nd International Conference on Metallurgy and Materials : conference proceedings : May 15th - 17th 2013, Hotel Voronez I, Brno Czech Republic, EU [CD-ROM]

ISBN

978-80-87294-41-3

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

1353-1357

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

15. 5. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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