Effect of thermal treatment on elastic properties of SiO2–Na2O–CaO–P2O5 glasses for biomedical applications

Glasses of the system SiO2-Na2O-CaO-P2O5 have been prepared for different compositions of SiO2 employing the normal melting and annealing technique. The glasses of different compositions have been subjected to different thermal treatments to explore the change in structure, mechanical and other rela...

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Bibliographic Details
Published in:Materials letters 2004-01, Vol.58 (1-2), p.211-215
Main Authors: Rajendran, V., Begum, A.Nishara, Azooz, M.A., El-Batal, F.H.
Format: Article
Language:English
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Summary:Glasses of the system SiO2-Na2O-CaO-P2O5 have been prepared for different compositions of SiO2 employing the normal melting and annealing technique. The glasses of different compositions have been subjected to different thermal treatments to explore the change in structure, mechanical and other related properties. The ultrasonic velocities and attenuation measurements have been made on different compositions of the pure and thermal-treated glasses at a fundamental frequency of 5 MHz at 303 K. The observed linear increase in density, velocities and elastic moduli with increase in thermal treatment temperature is same in all composition studied. The above results reveal an increase in hardness and the predominant nature of network bonds per unit volume rather than the coordination/cross-link changes, with the influence of thermal treatment.
ISSN:0167-577X
DOI:10.1016/S0167-577X(03)00447-6