Thermal stability of Li2O-SiO2-CaO-P2O5-F glass

Two glasses, the first one with the composition of Li 2 O·2SiO 2 and the second one with the addition of CaO, P 2 O 5 and CaF 2 in the stoichiometric ratio corresponding to fluoroapatite were prepared and their tendency to crystallize has been studied by non-isothermal DTA analysis. The values of ki...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2008-12, Vol.94 (3), p.849-852
Main Authors: Kuzielová, Eva, Kovár, V., Palou, M.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Applied sciences
Biological and medical sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Chemistry
Chemistry and Materials Science
Exact sciences and technology
Glasses
Inorganic Chemistry
Measurement Science and Instrumentation
Medical sciences
Physical Chemistry
Polymer Sciences
Regular Papers
Structure, analysis, properties
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Technology. Biomaterials. Equipments
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Summary:Two glasses, the first one with the composition of Li 2 O·2SiO 2 and the second one with the addition of CaO, P 2 O 5 and CaF 2 in the stoichiometric ratio corresponding to fluoroapatite were prepared and their tendency to crystallize has been studied by non-isothermal DTA analysis. The values of kinetic parameters calculated using the isoconversional integral method have been used to determine the temperature dependencies of both the length of isothermal induction period and the length of overall isothermal crystallization for both glasses. The estimated dependencies indicate that the glass containing CaO, P 2 O 5 and CaF 2 has a lower thermal stability.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-007-8681-8