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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Structural and magnetic engineering of (Nd, Pr, Dy, Tb)-Fe-B sintered magnets with Tb3Co0.6Cu0.4Hx composition in the powder mixture
Original language description
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.%.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20500 - 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
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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