Phase formation in the Tb-Co-Cu system in a range of Tb3(Co,Cu) compound

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F18%3A10241396" target="_blank" >RIV/61989100:27240/18:10241396 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27350/18:10241396 RIV/61989100:27360/18:10241396

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Phase formation in the Tb-Co-Cu system in a range of Tb3(Co,Cu) compound

Popis výsledku v původním jazyce

In recent years, the application of various additions (hydrides, oxides, intermetallic compounds, etc.) in powder mixtures for manufacturing Nd-Fe-B magnets shows promise as the method that allows one to increase the hysteretic characteristics of the magnets at the expense of realized grain-boundary diffusion and grain-boundary structuring processes. The processes allow one to introduce both the heavy rare-earth metals and copper that was shown also to favour the increase in the hysteretic parameter of Nd-Fe-B-based compositions. In the present work, we consider the alloys Tb3(Co1-x,Cux) with x = TILDE OPERATOR+D910.4 as additions to Nd-Fe-B-based powder mixtures. The alloys were prepared by arc melting in an argon atmosphere and subjected to homogenizing annealing at 600 oC for 90 h. The phase composition and phase equilibria in the system were studied by X-ray diffraction analysis, differential thermal analysis (DTA), optical and scanning electron microscopy, electron microprobe analysis, and low-temperature thermal magnetic analysis. The composition was shown to be three-phase, Tb3(Co,Cu), Tb12(Co,Cu)7, and Tb(Co,Cu) that is the primarily solidified phase in the system. The copper solubility in the Tb3Co and Tb12Co7 compounds and cobalt solubility in the TbCu compound were determined. A portion of the isothermal section of the Tb-Co-Cu system with at 600 oC was constructed. The possibility of the hydrogenation of the Tb3(Co1-x,Cux) composition with x = TILDE OPERATOR+D910.4 with the formation of TbHx, Co, Cu was demonstrated. (C) 2018 TANGER Ltd., Ostrava.

Název v anglickém jazyce

Phase formation in the Tb-Co-Cu system in a range of Tb3(Co,Cu) compound

Popis výsledku anglicky

In recent years, the application of various additions (hydrides, oxides, intermetallic compounds, etc.) in powder mixtures for manufacturing Nd-Fe-B magnets shows promise as the method that allows one to increase the hysteretic characteristics of the magnets at the expense of realized grain-boundary diffusion and grain-boundary structuring processes. The processes allow one to introduce both the heavy rare-earth metals and copper that was shown also to favour the increase in the hysteretic parameter of Nd-Fe-B-based compositions. In the present work, we consider the alloys Tb3(Co1-x,Cux) with x = TILDE OPERATOR+D910.4 as additions to Nd-Fe-B-based powder mixtures. The alloys were prepared by arc melting in an argon atmosphere and subjected to homogenizing annealing at 600 oC for 90 h. The phase composition and phase equilibria in the system were studied by X-ray diffraction analysis, differential thermal analysis (DTA), optical and scanning electron microscopy, electron microprobe analysis, and low-temperature thermal magnetic analysis. The composition was shown to be three-phase, Tb3(Co,Cu), Tb12(Co,Cu)7, and Tb(Co,Cu) that is the primarily solidified phase in the system. The copper solubility in the Tb3Co and Tb12Co7 compounds and cobalt solubility in the TbCu compound were determined. A portion of the isothermal section of the Tb-Co-Cu system with at 600 oC was constructed. The possibility of the hydrogenation of the Tb3(Co1-x,Cux) composition with x = TILDE OPERATOR+D910.4 with the formation of TbHx, Co, Cu was demonstrated. (C) 2018 TANGER Ltd., Ostrava.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - 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

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2018 : conference proceedings : reviewed version : 27th International Conference on Metallurgy and Materials : May 23rd-25th 2018, Hotel Voronez I, Brno, Czech Republic, EU

ISBN

978-80-87294-84-0

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

8

Strana od-do

1685-1692

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

23. 5. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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