Purification of rare-earth metals as the approach to improving properties of hard magnetic Nd2Fe14B-based materials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F16%3A86099561" target="_blank" >RIV/61989100:27360/16:86099561 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1757-899X/112/1/012009" target="_blank" >http://dx.doi.org/10.1088/1757-899X/112/1/012009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/112/1/012009" target="_blank" >10.1088/1757-899X/112/1/012009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Purification of rare-earth metals as the approach to improving properties of hard magnetic Nd2Fe14B-based materials

Popis výsledku v původním jazyce

Purification of rare-earth metals, namely, Nd, Pr, Tb, Dy used in manufacturing Nd2Fe14B-based magnets was realized. The metals were purified by vacuum distillation/sublimation. Conditions of the process were optimized and the structure of distilled metals was studied. Distilled terbium and dysprosium were used to prepare hydrides TbH2 and DyH2. Peculiarities of the decomposition of terbium and dysprosium hydrides were studied with the view of the use of the compounds as efficient additions, which allow the highcoercivity state of sintered magnets to be formed. Terbium hydride additions (to 4 wt %) favor the marked increase in the magnetization coercive force without excessive attenuation of the remanence (H-j(c) = 1940 kA/m, (BHmax) = 292 kJ/m(3)). Dysprosium hydride additions increase the stability of high-coercivity state (H-j(c) = 1310 kA/m, (BHmax) = 322 kJ/m(3) at 2 wt% DyH2).

Název v anglickém jazyce

Purification of rare-earth metals as the approach to improving properties of hard magnetic Nd2Fe14B-based materials

Popis výsledku anglicky

Purification of rare-earth metals, namely, Nd, Pr, Tb, Dy used in manufacturing Nd2Fe14B-based magnets was realized. The metals were purified by vacuum distillation/sublimation. Conditions of the process were optimized and the structure of distilled metals was studied. Distilled terbium and dysprosium were used to prepare hydrides TbH2 and DyH2. Peculiarities of the decomposition of terbium and dysprosium hydrides were studied with the view of the use of the compounds as efficient additions, which allow the highcoercivity state of sintered magnets to be formed. Terbium hydride additions (to 4 wt %) favor the marked increase in the magnetization coercive force without excessive attenuation of the remanence (H-j(c) = 1940 kA/m, (BHmax) = 292 kJ/m(3)). Dysprosium hydride additions increase the stability of high-coercivity state (H-j(c) = 1310 kA/m, (BHmax) = 322 kJ/m(3) at 2 wt% DyH2).

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

<a href="/cs/project/LO1203" target="_blank" >LO1203: Regionální materiálově technologické výzkumné centrum - Program udržitelnosti</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

IOP Conference Series: Materials Science and Engineering. Volume 112

ISBN

—

ISSN

1757-8981

e-ISSN

—

Počet stran výsledku

7

Strana od-do

—

Název nakladatele

Institute of Physics

Místo vydání

London

Místo konání akce

Altay

Datum konání akce

7. 9. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000376442000009