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

Result code in 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>

Alternative codes found

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

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/LTARF18031" target="_blank" >LTARF18031: Development of physico-chemical and engineering foundations for the initiation of innovative resources-economy technology of high-power and high-coercivity (Nd,R)-Fe-B (R = Pr, Tb, Dy, Ho) low-REM permanent magnets</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Article name in the collection

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

Number of pages

8

Pages from-to

1685-1692

Publisher name

Tanger

Place of publication

Ostrava

Event location

Brno

Event date

May 23, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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