Non-Isothermal Crystallization of Lithium Germanophosphate Glass Studied by Different Kinetic Methods
2018
Authors
Matijašević, Srđan D.Grujić, Snežana
Topalović, Vladimir S.
Nikolić, Jelena D.
Smiljanić, Sonja
Labus, Nebojša
Savić, Veljko
Article (Published version)
Metadata
Show full item recordAbstract
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:
Lithium germanophosphate glass / Crystallization kinetics / DTA / nucleationSource:
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
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Matijašević, Srđan D. AU - Grujić, Snežana AU - Topalović, Vladimir S. AU - Nikolić, Jelena D. AU - Smiljanić, Sonja AU - Labus, Nebojša AU - Savić, Veljko PY - 2018 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3895 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 ER -
@article{ author = "Matijašević, Srđan D. and Grujić, Snežana and Topalović, Vladimir S. and Nikolić, Jelena D. 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" }
Matijašević, S. D., Grujić, S., Topalović, V. S., Nikolić, J. D., 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
Matijašević SD, Grujić S, Topalović VS, Nikolić JD, 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 .
Matijašević, Srđan D., Grujić, Snežana, Topalović, Vladimir S., Nikolić, Jelena D., 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 . .