Influence of melting period in the thermal stability and physical properties of TeO2–ZnO glass system

Authors

  • Mohd Jaafar Mohamed Raji Department of Physics, Universiti Teknologi Malaysia, 81310 Skudai, Malaysia Author
  • Zuhairi Ibrahim Department of Physics, Universiti Teknologi Malaysia, 81310 Skudai, Malaysia Author
  • Sulhadi Sulhadi Department of Physics, Universiti Teknologi Malaysia, 81310 Skudai, Malaysia Author
  • Azman Kasim Department of Physics, Universiti Teknologi Malaysia, 81310 Skudai, Malaysia Author

DOI:

https://doi.org/10.31258/244qqe98

Keywords:

Melting time, thermal parameters, physical properties

Abstract

Tellurite glasses of the 70TeO2–30ZnO systems have successfully been made by melt quenching technique. The influence of melting period in the thermal stability and physical properties of glass has been investigated by means of TG/DTA and density measurement. The thermal parameters, such as the glass transition temperature (Tg), crystallization temperature (Tc) and melting temperature (Tm) were succesfully determined. It is found that an increasing of melting period in the preparation of tellurite glasses from 15 minute to 75 minute results in increasing of Tg from from 327°C to 331°C. This glass system was found to posses a wide range of glass stability from 79°C – 104°C. However, for the melting time which is more than 30 minute, the density of glasses decreases from 5.50 g/cm-3 to 5.46 g/cm-3 while the molar volume increase from 24.75 cm3/mol to 24.94 cm3/mol.

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Published

2007-10-31

Issue

Vol. 5 No. 12 (2007): IPC Journal (October 2007)

Section

Regular Articles