Publication detail

Thermal properties of alkaline titanophosphate glasses

Authors: Mošner Petr | Koudelka Ladislav | Pospíšil Jaroslav

Year: 2007

Type of publication: článek ve sborníku

Name of source: ICG 2007: XXIst International Congress on Glass

Publisher name: The International Commission on Glass

Place: Strasbourg

Page from-to: T28

Titles:

Language	Name	Abstract	Keywords
cze	Termické chování alkalických titanofosfátových skel	Pomocí DTA, TMA a rtg difrakční analázy bylo studováno termické chování alkalických titanofosfátových skel o složení (50-x)Me2O-xTiO2-50P2O5 (Me = Li, Na).
eng	Thermal properties of alkaline titanophosphate glasses	Differential thermal analysis, thermomechanical analysis and X-ray diffraction were used to study the thermal behaviour of (50-x)Me2O-xTiO2-50P2O5 (Me = Li, Na) glasses. The addition of TiO2 into metaphopshate glasses results in a nonlinear increase of glass transition temperature in both glass series, whereas the thermal expansion coefficient decreases. All the studied glasses crystallize on heating in the temperature range of 300-650oC. Crystallization products contained MePO3, NaTi2(PO4)3 and TiP2O7 compounds. The study of crystallization mechanism showed that surface nucleation mechanism predominantly prevails over the internal one. With increasing TiO2 content the maximum nucleation rate temperature shift from the value slightly above glass transition temperature towards crystallization temperature and the nucleation time increases.	Phosphate, Glasses, Structure, Properties

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