The crystallisation of calcium phosphate glass containing vanadium oxide
2007
Authors
Živanović, Vladimir D.Tošić, Mihajlo B.
Blagojević, Nikola S.
Grujić, Snežana
Mitrović, Mico M.
Article (Published version)
Metadata
Show full item recordAbstract
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.
Keywords:
phosphate glass / vanadium oxide / crystallisationSource:
Ceramics - Silikaty, 2007, 51, 2, 112-118Publisher:
- University of Chemistry and Technology, Prague
Institution/Community
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 .