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Journal of Materials Science

, Volume 27, Issue 20, pp 5580–5584 | Cite as

Ultrasonic investigation and infrared absorption of some sodium borate glasses

  • Mostafa A. Sidkey
  • Ahlam M. Abd El-Fattah
  • Lamia Abd El Latif
  • Zeanab Abd El Aziz
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  • 34 Downloads

Abstract

Ultrasonic velocities and absorption measurements in sodium borate glasses containing Na2O have been made using the pulse echo technique at 4, 5 and 6 MHz. Results showed an increase in velocity as the sodium oxide content (mol%) increased. The ultrasonic absorption results showed the presence of very high and well-defined peak which shifts its position to lower temperatures with increasing frequency. This suggests some sort of relaxation process and the activation energy of this process increased with increasing Na2O concentration (mol%). The infrared absorption spectra of sodium borate glasses confirmed the results obtained by ultrasonic investigations.

Keywords

Polymer Activation Energy Absorption Spectrum Borate Absorption Measurement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • Mostafa A. Sidkey
    • 1
  • Ahlam M. Abd El-Fattah
    • 1
  • Lamia Abd El Latif
    • 1
  • Zeanab Abd El Aziz
    • 2
  1. 1.National Institute for StandardsCairoEgypt
  2. 2.National Research CentreCairoEgypt

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