The crystallisation of calcium phosphate glass containing vanadium oxide
2007
Аутори
Živanović, Vladimir D.Tošić, Mihajlo B.
Blagojević, Nikola S.
Grujić, Snežana
Mitrović, Mico M.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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.
Кључне речи:
phosphate glass / vanadium oxide / crystallisationИзвор:
Ceramics - Silikaty, 2007, 51, 2, 112-118Издавач:
- University of Chemistry and Technology, Prague
Институција/група
Tehnološko-metalurški fakultetTY - 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 .