Non-isothermal crystallization of lithium germanophosphate glass studied by different kinetic methods

Matijašević, Srđan D.; Grujić, Snežana R.; Topalović, Vladimir S.; Nikolić, Jelena D.; Smiljanić, Sonja V.; Labus, Nebojša; Savić, Veljko V.

doi:10.2298/SOS1802193M

2018

Matijasevic_Science-of-Sintering_2018_50_193-203.pdf (501.3Kb)

Authors

Matijašević, Srđan D.
Grujić, Snežana R.
Topalović, Vladimir S.
Nikolić, Jelena D.
Smiljanić, Sonja V.

Labus, Nebojša

Savić, Veljko V.

Article (Published version)

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Abstract

Crystallization kinetics of 22.5Li2O•10Al2O3 •30GeO2•37.5P2 O5 (mol%) glass was studied under non-isothermal condition using the differential thermal analysis (DTA). The study was performed by using the first crystallization peak temperature (Tp1) which belongs to the precipitation of LiGe2 (PO4)3 phase in the glass. The activation energy of glass crystallization (Ea) was determined using different isokinetic methods. The dependence of Ea on the degree of glass-crystal transformation (α) was studied using model-free isoconversional linear integral KAS (Kissinger–Akahira–Sunose) and FWO (Flynn–Wall– Ozawa) methods. It was shown that the Ea varies with α and hence with temperature and consequently the glass/crystal transformation can be described as a complex process involving different mechanisms of nucleation and growth. © 2016 Authors. Published by the International Institute for the Science of Sintering.

Keywords:

crystallization kinetics / DTA / lithium germanophosphate glass / nucleation

Source:
Science of Sintering, 2018, 50, 2, 193-203

Publisher:

Belgrade : International Institute for the Science of Sintering

Funding / projects:

DOI: 10.2298/SOS1802193M

ISSN: 0350-820X

WoS: 000452975300006

Scopus: 2-s2.0-85051428086

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	2

TY  - JOUR
AU  - Matijašević, Srđan D.
AU  - Grujić, Snežana R.
AU  - Topalović, Vladimir S.
AU  - Nikolić, Jelena D.
AU  - Smiljanić, Sonja V.
AU  - Labus, Nebojša
AU  - Savić, Veljko V.
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/3747
AB  - Crystallization kinetics of 22.5Li2O•10Al2O3 •30GeO2•37.5P2 O5 (mol%) glass was studied under non-isothermal condition using the differential thermal analysis (DTA). The study was performed by using the first crystallization peak temperature (Tp1) which belongs to the precipitation of LiGe2 (PO4)3 phase in the glass. The activation energy of glass crystallization (Ea) was determined using different isokinetic methods. The dependence of Ea on the degree of glass-crystal transformation (α) was studied using model-free isoconversional linear integral KAS (Kissinger–Akahira–Sunose) and FWO (Flynn–Wall– Ozawa) methods. It was shown that the Ea varies with α and hence with temperature and consequently the glass/crystal transformation can be described as a complex process involving different mechanisms of nucleation and growth. © 2016 Authors. Published by the International Institute for the Science of Sintering.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Non-isothermal crystallization of lithium germanophosphate glass studied by different kinetic methods
SP  - 193
EP  - 203
VL  - 50
IS  - 2
DO  - 10.2298/SOS1802193M
UR  - https://hdl.handle.net/21.15107/rcub_dais_3747
ER  -

@article{
author = "Matijašević, Srđan D. and Grujić, Snežana R. and Topalović, Vladimir S. and Nikolić, Jelena D. and Smiljanić, Sonja V. and Labus, Nebojša and Savić, Veljko V.",
year = "2018",
abstract = "Crystallization kinetics of 22.5Li2O•10Al2O3 •30GeO2•37.5P2 O5 (mol%) glass was studied under non-isothermal condition using the differential thermal analysis (DTA). The study was performed by using the first crystallization peak temperature (Tp1) which belongs to the precipitation of LiGe2 (PO4)3 phase in the glass. The activation energy of glass crystallization (Ea) was determined using different isokinetic methods. The dependence of Ea on the degree of glass-crystal transformation (α) was studied using model-free isoconversional linear integral KAS (Kissinger–Akahira–Sunose) and FWO (Flynn–Wall– Ozawa) methods. It was shown that the Ea varies with α and hence with temperature and consequently the glass/crystal transformation can be described as a complex process involving different mechanisms of nucleation and growth. © 2016 Authors. Published by the International Institute for the Science of Sintering.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Non-isothermal crystallization of lithium germanophosphate glass studied by different kinetic methods",
pages = "193-203",
volume = "50",
number = "2",
doi = "10.2298/SOS1802193M",
url = "https://hdl.handle.net/21.15107/rcub_dais_3747"
}

Matijašević, S. D., Grujić, S. R., Topalović, V. S., Nikolić, J. D., Smiljanić, S. V., Labus, N.,& Savić, V. V.. (2018). Non-isothermal crystallization of lithium germanophosphate glass studied by different kinetic methods. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 50(2), 193-203.
https://doi.org/10.2298/SOS1802193M
https://hdl.handle.net/21.15107/rcub_dais_3747

Matijašević SD, Grujić SR, Topalović VS, Nikolić JD, Smiljanić SV, Labus N, Savić VV. Non-isothermal crystallization of lithium germanophosphate glass studied by different kinetic methods. in Science of Sintering. 2018;50(2):193-203.
doi:10.2298/SOS1802193M
https://hdl.handle.net/21.15107/rcub_dais_3747 .

Matijašević, Srđan D., Grujić, Snežana R., Topalović, Vladimir S., Nikolić, Jelena D., Smiljanić, Sonja V., Labus, Nebojša, Savić, Veljko V., "Non-isothermal crystallization of lithium germanophosphate glass studied by different kinetic methods" in Science of Sintering, 50, no. 2 (2018):193-203,
https://doi.org/10.2298/SOS1802193M .,
https://hdl.handle.net/21.15107/rcub_dais_3747 .