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 los...s of hard magnetic properties.
TY - JOUR
AU - Talijan, Nadežda M.
AU - Ćosović, Vladan
AU - Žak, Tomas
AU - Grujić, Aleksandar
AU - Stajić-Trošić, Jasna
PY - 2009
UR - http://cer.ihtm.bg.ac.rs/handle/123456789/551
AB - 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.
PB - Technical Faculty, Bor
T2 - Journal of Mining and Metallurgy B: Metallurgy
T1 - Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements
VL - 45
IS - 1
SP - 111
EP - 119
DO - 10.2298/JMMB0901111T
ER -
@article{
author = "Talijan, Nadežda M. and Ćosović, Vladan and Žak, Tomas and Grujić, Aleksandar and Stajić-Trošić, Jasna",
year = "2009",
url = "http://cer.ihtm.bg.ac.rs/handle/123456789/551",
abstract = "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.",
publisher = "Technical Faculty, Bor",
journal = "Journal of Mining and Metallurgy B: Metallurgy",
title = "Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements",
volume = "45",
number = "1",
pages = "111-119",
doi = "10.2298/JMMB0901111T"
}
Talijan NM, Ćosović V, Žak T, Grujić A, Stajić-Trošić J. Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements. Journal of Mining and Metallurgy B: Metallurgy. 2009;45(1):111-119
Talijan, N. M., Ćosović, V., Žak, T., Grujić, A.,& Stajić-Trošić, J. (2009). Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements.
Journal of Mining and Metallurgy B: MetallurgyTechnical Faculty, Bor., 45(1), 111-119.
https://doi.org/10.2298/JMMB0901111T
Talijan Nadežda M., Ćosović Vladan, Žak Tomas, Grujić Aleksandar, Stajić-Trošić Jasna, "Structural and phase composition modification of nanocrystalline Nd14Fe79B7 alloy during thermomagnetic measurements" 45, no. 1 (2009):111-119,
https://doi.org/10.2298/JMMB0901111T .
