Electrochemical corrosion tests of Nd-Fe-B-based magnetic materials with modified structure

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F21%3A10247251" target="_blank" >RIV/61989100:27360/21:10247251 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1742-6596/1758/1/012038/pdf" target="_blank" >https://iopscience.iop.org/article/10.1088/1742-6596/1758/1/012038/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/1758/1/012038" target="_blank" >10.1088/1742-6596/1758/1/012038</a>

Result language
angličtina
Original language name
Electrochemical corrosion tests of Nd-Fe-B-based magnetic materials with modified structure
Original language description
The wide application of Nd-Fe-B permanent magnets in addition to the rare-earth metal resourceconstrains determine the necessity of their recycling. One of approaches to magnet-to-magnet recycling consists in using the grain boundary modification of sintered magnet material, which includes the grain-boundary diffusion (GBD) and grain-boundary structuring (GBS). The preparation of magnets with the modified structure determines a need for research their corrosion resistance. The corrosion resistance of magnets prepared by powder blending techniques, namely, magnets, which were recycled from hard-disk drivers, in using Dy/NdH2 additions in the powder mixture and magnets, which were prepared from strip-casting alloy, in using TbH2 hydride in the powder mixture, is studied. The corrosion potential and polarization resistance were measured, and the average corrosion rate was estimated based on polarization measurements of the magnet samples in the aqueous solution 0.1 M NaCl. Furthermore, a pitting resistance corrosion test was conducted and the values of pittingand repassivation potential were determined. The corrosive properties of the magnet samples are discussed from the viewpoint of the phase compositions of the material. (C) Published under licenceby IOP Publishing Ltd.
Czech name
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Czech description
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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
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Journal of Physics: Conference Series. Volume 1758
ISBN
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ISSN
1742-6588
e-ISSN
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Number of pages
9
Pages from-to
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Publisher name
IOP Publishing
Place of publication
Bristol
Event location
Suzdal
Event date
Oct 5, 2020
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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