NDLI: Thermal stability and crystallization kinetics of Pb and Bi borate-based glasses

Content Provider	SpringerLink
Author	Shaaban, Essam R. Mohamed, S. H.
Copyright Year	2011
Abstract	Glasses with compositions 60B$_{2}$O$_{3}$–40PbO, 60B$_{2}$O$_{3}$–40Bi$_{2}$O$_{3}$, and 60B$_{2}$O$_{3}$–30Bi$_{2}$O$_{3}$–10PbO have been prepared and studied by differential thermal analysis. The crystallization kinetics of the glasses was investigated under non-isothermal conditions. From dependence of the glass transition temperature (T $_{g}$) on the heating rate, the activation energy for the glass transition was derived. Similarly the activation energy of the crystallization process was determined. Thermal stability of these glasses were achieved in terms of the characteristic temperatures, such as the glass transition temperature, T $_{g}$, the onset temperature of crystallization, T $_{in}$ , the temperature corresponding to the maximum crystallization rate, T $_{p}$, beside the kinetic parameters, K(T $_{g}$) and K(T $_{p}$). The results revealed that the 60B$_{2}$O$_{3}$–40PbO is more stable than the others. The crystallization mechanism is characterized for glasses. The phases at which the glass crystallizes after the thermal process have been identified by X-ray diffraction.
Starting Page	617
Ending Page	624
Page Count	8
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	107
Issue Number	2
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-02-25
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Borate-based glasses Thermal stability Crystallization kinetics XRD analysis Measurement Science and Instrumentation Polymer Sciences Inorganic Chemistry Physical Chemistry Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Physical and Theoretical Chemistry

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