Non-Isothermal Crystallization of Lithium Germanophosphate Glass Studied by Different Kinetic Methods

2018
Authors
Matijašević, Srđan
Grujić, Snežana R.
Topalović, Vladimir

Nikolić, Jelena

Smiljanić, Sonja

Labus, Nebojša

Savić, Veljko

Article (Published version)
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Crystallization kinetics of 22.5Li(2)O center dot 10Al(2)O(3)center dot 30GeO(2)center dot 37.5P(2)O(5) (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 (T-p1) which belongs to the precipitation of LiGe2(PO4)(3) phase in the glass. The activation energy of glass crystallization (E-a) was determined using different isokinetic methods. The dependence of E-a on the degree of glass-crystal transformation (alpha) was studied using model-free isoconversional linear integral KAS (Kissinger-Akahira-Sunose) and FWO (Flynn-Wall-Ozawa) methods. It was shown that the E-a varies with a and hence with temperature and consequently the glass/crystal transformation can be described as a complex process involving different mechanisms of nucleation and growth.
Keywords:
nucleation / Lithium germanophosphate glass / DTA / Crystallization kineticsSource:
Science of Sintering, 2018, 50, 2, 193-203Publisher:
- Međunarodni Institut za nauku o sinterovanju, Beograd
Funding / projects:
- The development of glasses with controlled ions release for application in agriculture and medicine (RS-34001)
- Phenomena and processes of the synthesis of new glassy and nano-structured glass-ceramics materials (RS-172004)
DOI: 10.2298/SOS1802193M
ISSN: 0350-820X
WoS: 000452975300006
Scopus: 2-s2.0-85051428086
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Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Matijašević, Srđan AU - Grujić, Snežana R. AU - Topalović, Vladimir AU - Nikolić, Jelena AU - Smiljanić, Sonja AU - Labus, Nebojša AU - Savić, Veljko PY - 2018 UR - https://ritnms.itnms.ac.rs/handle/123456789/472 AB - Crystallization kinetics of 22.5Li(2)O center dot 10Al(2)O(3)center dot 30GeO(2)center dot 37.5P(2)O(5) (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 (T-p1) which belongs to the precipitation of LiGe2(PO4)(3) phase in the glass. The activation energy of glass crystallization (E-a) was determined using different isokinetic methods. The dependence of E-a on the degree of glass-crystal transformation (alpha) was studied using model-free isoconversional linear integral KAS (Kissinger-Akahira-Sunose) and FWO (Flynn-Wall-Ozawa) methods. It was shown that the E-a varies with a and hence with temperature and consequently the glass/crystal transformation can be described as a complex process involving different mechanisms of nucleation and growth. PB - Međunarodni Institut za nauku o sinterovanju, Beograd T2 - Science of Sintering T1 - Non-Isothermal Crystallization of Lithium Germanophosphate Glass Studied by Different Kinetic Methods EP - 203 IS - 2 SP - 193 VL - 50 DO - 10.2298/SOS1802193M UR - conv_837 ER -
@article{ author = "Matijašević, Srđan and Grujić, Snežana R. and Topalović, Vladimir and Nikolić, Jelena and Smiljanić, Sonja and Labus, Nebojša and Savić, Veljko", year = "2018", abstract = "Crystallization kinetics of 22.5Li(2)O center dot 10Al(2)O(3)center dot 30GeO(2)center dot 37.5P(2)O(5) (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 (T-p1) which belongs to the precipitation of LiGe2(PO4)(3) phase in the glass. The activation energy of glass crystallization (E-a) was determined using different isokinetic methods. The dependence of E-a on the degree of glass-crystal transformation (alpha) was studied using model-free isoconversional linear integral KAS (Kissinger-Akahira-Sunose) and FWO (Flynn-Wall-Ozawa) methods. It was shown that the E-a varies with a and hence with temperature and consequently the glass/crystal transformation can be described as a complex process involving different mechanisms of nucleation and growth.", publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd", journal = "Science of Sintering", title = "Non-Isothermal Crystallization of Lithium Germanophosphate Glass Studied by Different Kinetic Methods", pages = "203-193", number = "2", volume = "50", doi = "10.2298/SOS1802193M", url = "conv_837" }
Matijašević, S., Grujić, S. R., Topalović, V., Nikolić, J., Smiljanić, S., Labus, N.,& Savić, V.. (2018). Non-Isothermal Crystallization of Lithium Germanophosphate Glass Studied by Different Kinetic Methods. in Science of Sintering Međunarodni Institut za nauku o sinterovanju, Beograd., 50(2), 193-203. https://doi.org/10.2298/SOS1802193M conv_837
Matijašević S, Grujić SR, Topalović V, Nikolić J, Smiljanić S, Labus N, Savić V. 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 conv_837 .
Matijašević, Srđan, Grujić, Snežana R., Topalović, Vladimir, Nikolić, Jelena, Smiljanić, Sonja, Labus, Nebojša, Savić, Veljko, "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 ., conv_837 .