NDLI: Thermal analysis and crystallization of the glasses inside the BaO–SrO–TiO$_{2}$–NaPO$

Content Provider	Springer Nature Link
Author	Siuh, H. Bih, L. Maun, B. Lazor, P.
Copyright Year	2016
Abstract	The xBa$_{0.5}$Sr$_{0.5}$TiO$_{3}$–(1 − x)NaPO$_{3}$ (x = 0–0.20 mol%) glasses were prepared by the conventional melt-quenching method. The amorphous state of the samples was verified by X-ray diffraction. The density, molar volume, glass transition temperature (T $_{g}$), micro-hardness and the crystallization temperature (T $_{c}$) are determined for each glass. It is found that they depend strongly on the chemical composition of the glasses. The results of the micro-hardness show an increase in the H $_{v}$ parameter with the Ba$_{0.5}$Sr$_{0.5}$TiO$_{3}$ content. The crystallization of glasses is made by submitting samples to heat treatments, and the crystallized phases are identified by XRD. The kinetic of the crystallization is carried out by thermal analysis using DSC technique. The mechanism of crystallization is proposed according to the determined activation energy (E $_{a}$) and the Avrami parameter (n). The structural approach of the glasses was realized out by IR spectroscopy. This technique has highlighted the co-existence of different phosphate and titanium structural units in the glassy-matrix.
Starting Page	883
Ending Page	890
Page Count	8
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	128
Issue Number	2
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-12-19
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Phosphate Glasses Glass–ceramics Crystallization Kinetic Thermal analysis Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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