Preparation of Nd-Fe-B magnets in using TbH2 and study of their structure and magnetic properties
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F12%3A86084267" target="_blank" >RIV/61989100:27360/12:86084267 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Preparation of Nd-Fe-B magnets in using TbH2 and study of their structure and magnetic properties
Original language description
The aim of work was the enhancement of coercivity of sintered Nd-Fe-B magnets without obvious reduction of the remanence by diffusing Tb onto the surface of the Nd2Fe14B matrix grains. We have studied the kinetics of TbH2 decomposition in terms of the possible application of the hydride as an effective addition for sintered Nd-Fe-B-based magnets. The diffusion dependence of the decomposition process was demonstrated; the complete decomposition of the TbH2 hydride takes place during heating to 1000 °C. Two Nd-Fe-B magnets were prepared using strip-casting alloy (free from terbium), which was refined by hydrogen decrepitation process. Terbium hydride was added to the mixture (to 2 and 4% Tb concentration in the composition), which was milled in propyl alcohol, compacted, sintered at 1070°C, and subsequently heat treated at 500°C for 2 h. Before sintering, the mixture was passivated in nitrogen flow. The low hydrogen content in the magnets prepared in using TbH2 additions indicates the co
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Result continuities
Project
<a href="/en/project/ED0040%2F01%2F01" target="_blank" >ED0040/01/01: Regional materials science and technology centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
COMAT 2012 : [2nd International Conference on] Recent Trends in Structural Materials : conference proceedings : November 21st-22nd 2012, Parkhotel Plzen, Czech Republic, EU
ISBN
978-80-87294-34-5
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
1-7
Publisher name
Tanger
Place of publication
Ostrava
Event location
Plzeň
Event date
Nov 21, 2012
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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