Structure and Magnetic Properties of Nd-Fe-B Magnets Prepared from DyH2-Containing Powder Mixtures
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F18%3A10241394" target="_blank" >RIV/61989100:27360/18:10241394 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1134/S2075113318030115" target="_blank" >http://dx.doi.org/10.1134/S2075113318030115</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1134/S2075113318030115" target="_blank" >10.1134/S2075113318030115</a>
Alternative languages
Result language
angličtina
Original language name
Structure and Magnetic Properties of Nd-Fe-B Magnets Prepared from DyH2-Containing Powder Mixtures
Original language description
Sintered Nd-Pr-Dy-Fe-B permanent magnets were prepared by a powder blending technique using mixtures consisting of strip-casting alloy (wt %) 24.0 Nd, 6.5 Pr, 0.5 Dy, 1.0 B, 0.2 Al, 65.8 Fe and 2 wt % DyH2 dysprosium hydride. After optimum heat treatment of magnets at 500oC for 1 h, the following hysteretic characteristics were reached: remanence Br = 1.29 T; coercive force jHc = 1309 kA/m; critical field Hk = 1220 kA/m; and the maximum energy product (BH)max = 322 kJ/m3. The characteristic peculiarity of the magnets prepared from hydride-containing power mixtures is the stability of hysteretic properties in the course of subsequent stepped annealings or progressive heatings at temperatures of 250-500oC for, in total, more than 20 h. Conditions of low-temperature annealings resulting in the degradation and subsequent restoration of hysteretic properties of magnets are determined. The evolution of the microstructure and phase composition of magnets in the course of heat treatments was studied by X-ray diffraction analysis and scanning electron microscopy, and the correlation between the structural changes and hysteretic properties of magnets is discussed. (C) 2018, Pleiades Publishing, Ltd.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/LO1203" target="_blank" >LO1203: Regional Materials Science and Technology Centre - Feasibility Program</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Inorganic Materials: Applied Research
ISSN
2075-1133
e-ISSN
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Volume of the periodical
9
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
509-516
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85048130718