Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements

Changes in the microstructure parameters, phase composition and magnetic properties of rapid quenched Nd-rich Nd14Fe79B7 alloy caused by thermomagnetic measurement (TM) were studied using XRD methods of phase analysis, crystallite size and lattice microstrain determination. The observed changes were...

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Main Authors: Talijan N., Ćosović V., Žák T., Grujić A., Stajić-Trošić J.
Format: Article
Language:English
Published: Technical Faculty, Bor 2009-01-01
Series:Journal of Mining and Metallurgy. Section B: Metallurgy
Subjects:
Online Access:http://www.doiserbia.nb.rs/img/doi/1450-5339/2009/1450-53390901111T.pdf
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spelling doaj-6e93a32b1ffd4630ba7376d3435bdefe2020-11-24T23:12:00ZengTechnical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392009-01-0145111111910.2298/JMMB0901111TStructural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurementsTalijan N.Ćosović V.Žák T.Grujić A.Stajić-Trošić J.Changes in the microstructure parameters, phase composition and magnetic properties of rapid quenched Nd-rich Nd14Fe79B7 alloy caused by thermomagnetic measurement (TM) were studied using XRD methods of phase analysis, crystallite size and lattice microstrain determination. The observed changes were analyzed between the optimized magnetic state of this alloy and state after TM up to 800oC. Measurement of magnetic properties was carried out on the SQUID magnetometer at ambient temperature. The obtained experimental results show that the investigated alloy in the optimized magnetic state has nearly monophase composition with predominant content of hard magnetic Nd2Fe14B phase (up to 95 mass %) with mean crystallite size below 60 nm. In the state after TM, it was found that the decreased amount of Nd2Fe14B phase (75 mass%), increased amount of soft magnetic phases, predominantly of Fe7Nd5, formation of Nd-rich oxide Nd2O3 phase, as well as grain growth have caused the observed quality loss of hard magnetic properties. http://www.doiserbia.nb.rs/img/doi/1450-5339/2009/1450-53390901111T.pdfneodymium rich Nd-Fe-B alloythermomagnetic mesurementX-ray diffractionmagnetic properties
collection DOAJ
language English
format Article
sources DOAJ
author Talijan N.
Ćosović V.
Žák T.
Grujić A.
Stajić-Trošić J.
spellingShingle Talijan N.
Ćosović V.
Žák T.
Grujić A.
Stajić-Trošić J.
Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements
Journal of Mining and Metallurgy. Section B: Metallurgy
neodymium rich Nd-Fe-B alloy
thermomagnetic mesurement
X-ray diffraction
magnetic properties
author_facet Talijan N.
Ćosović V.
Žák T.
Grujić A.
Stajić-Trošić J.
author_sort Talijan N.
title Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements
title_short Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements
title_full Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements
title_fullStr Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements
title_full_unstemmed Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements
title_sort structural and phase composition modification of nanocrystalline nd14fe79b7 alloy during thermomagnetic measurements
publisher Technical Faculty, Bor
series Journal of Mining and Metallurgy. Section B: Metallurgy
issn 1450-5339
publishDate 2009-01-01
description Changes in the microstructure parameters, phase composition and magnetic properties of rapid quenched Nd-rich Nd14Fe79B7 alloy caused by thermomagnetic measurement (TM) were studied using XRD methods of phase analysis, crystallite size and lattice microstrain determination. The observed changes were analyzed between the optimized magnetic state of this alloy and state after TM up to 800oC. Measurement of magnetic properties was carried out on the SQUID magnetometer at ambient temperature. The obtained experimental results show that the investigated alloy in the optimized magnetic state has nearly monophase composition with predominant content of hard magnetic Nd2Fe14B phase (up to 95 mass %) with mean crystallite size below 60 nm. In the state after TM, it was found that the decreased amount of Nd2Fe14B phase (75 mass%), increased amount of soft magnetic phases, predominantly of Fe7Nd5, formation of Nd-rich oxide Nd2O3 phase, as well as grain growth have caused the observed quality loss of hard magnetic properties.
topic neodymium rich Nd-Fe-B alloy
thermomagnetic mesurement
X-ray diffraction
magnetic properties
url http://www.doiserbia.nb.rs/img/doi/1450-5339/2009/1450-53390901111T.pdf
work_keys_str_mv AT talijann structuralandphasecompositionmodificationofnanocrystallinend14fe79b7alloyduringthermomagneticmeasurements
AT cosovicv structuralandphasecompositionmodificationofnanocrystallinend14fe79b7alloyduringthermomagneticmeasurements
AT zakt structuralandphasecompositionmodificationofnanocrystallinend14fe79b7alloyduringthermomagneticmeasurements
AT grujica structuralandphasecompositionmodificationofnanocrystallinend14fe79b7alloyduringthermomagneticmeasurements
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