The crystallisation behaviour of calcium phosphate glass containing vanadium oxide was studied. Glass with a molar ratio of [CaO]/[P2O5] = 1.13 and a V2O5 content of 8 mol.% was prepared for the experiments. The crystallisation of bulk glass samples was performed tinder isothermal conditions at T = 650-820 degrees C. The surface crystallisation mechanism of studied glass with dendritic growth of the primary alpha-Ca2P2O7 phase was observed. In all crystallised samples, beta-Ca2P2O7 and VP2O7 appeared as the secondary phases. In the investigated temperature range, crystal growth rates 9 x 10(-9) - 2.14 x 10(-6) m/s were determined. The temperature dependence of the crystal growth rate makes possible to calculate activation energy E-a = 407 +/- 30 kJ/mol of crystallization. The experimental data were compared with those estimated by using a theoretical model of the crystal growth rate and good agreement between the results was found.
TY - JOUR
AU - Živanović, Vladimir D.
AU - Tošić, Mihajlo B.
AU - Blagojević, Nikola S.
AU - Grujić, Snežana
AU - Mitrović, Mico M.
PY - 2007
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1033
AB - The crystallisation behaviour of calcium phosphate glass containing vanadium oxide was studied. Glass with a molar ratio of [CaO]/[P2O5] = 1.13 and a V2O5 content of 8 mol.% was prepared for the experiments. The crystallisation of bulk glass samples was performed tinder isothermal conditions at T = 650-820 degrees C. The surface crystallisation mechanism of studied glass with dendritic growth of the primary alpha-Ca2P2O7 phase was observed. In all crystallised samples, beta-Ca2P2O7 and VP2O7 appeared as the secondary phases. In the investigated temperature range, crystal growth rates 9 x 10(-9) - 2.14 x 10(-6) m/s were determined. The temperature dependence of the crystal growth rate makes possible to calculate activation energy E-a = 407 +/- 30 kJ/mol of crystallization. The experimental data were compared with those estimated by using a theoretical model of the crystal growth rate and good agreement between the results was found.
PB - University of Chemistry and Technology, Prague
T2 - Ceramics - Silikaty
T1 - The crystallisation of calcium phosphate glass containing vanadium oxide
EP - 118
IS - 2
SP - 112
VL - 51
UR - https://hdl.handle.net/21.15107/rcub_technorep_1033
ER -
@article{
author = "Živanović, Vladimir D. and Tošić, Mihajlo B. and Blagojević, Nikola S. and Grujić, Snežana and Mitrović, Mico M.",
year = "2007",
abstract = "The crystallisation behaviour of calcium phosphate glass containing vanadium oxide was studied. Glass with a molar ratio of [CaO]/[P2O5] = 1.13 and a V2O5 content of 8 mol.% was prepared for the experiments. The crystallisation of bulk glass samples was performed tinder isothermal conditions at T = 650-820 degrees C. The surface crystallisation mechanism of studied glass with dendritic growth of the primary alpha-Ca2P2O7 phase was observed. In all crystallised samples, beta-Ca2P2O7 and VP2O7 appeared as the secondary phases. In the investigated temperature range, crystal growth rates 9 x 10(-9) - 2.14 x 10(-6) m/s were determined. The temperature dependence of the crystal growth rate makes possible to calculate activation energy E-a = 407 +/- 30 kJ/mol of crystallization. The experimental data were compared with those estimated by using a theoretical model of the crystal growth rate and good agreement between the results was found.",
publisher = "University of Chemistry and Technology, Prague",
journal = "Ceramics - Silikaty",
title = "The crystallisation of calcium phosphate glass containing vanadium oxide",
pages = "118-112",
number = "2",
volume = "51",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1033"
}
Živanović, V. D., Tošić, M. B., Blagojević, N. S., Grujić, S.,& Mitrović, M. M.. (2007). The crystallisation of calcium phosphate glass containing vanadium oxide. in Ceramics - Silikaty
University of Chemistry and Technology, Prague., 51(2), 112-118.
https://hdl.handle.net/21.15107/rcub_technorep_1033
Živanović VD, Tošić MB, Blagojević NS, Grujić S, Mitrović MM. The crystallisation of calcium phosphate glass containing vanadium oxide. in Ceramics - Silikaty. 2007;51(2):112-118.
https://hdl.handle.net/21.15107/rcub_technorep_1033 .
Živanović, Vladimir D., Tošić, Mihajlo B., Blagojević, Nikola S., Grujić, Snežana, Mitrović, Mico M., "The crystallisation of calcium phosphate glass containing vanadium oxide" in Ceramics - Silikaty, 51, no. 2 (2007):112-118,
https://hdl.handle.net/21.15107/rcub_technorep_1033 .
