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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Mechanical and structural studies on sodium borosilicate glasses doped with Er
2
O
3
using ultrasonic velocity and FTIR spectroscopy
Physica B: Condensed Matter, Volume 388, No. 1-2, Year 2007
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Description
Sodium borosilicate glasses doped with different mol% content of Er2O3 have been prepared by rapid-quenching method. Ultrasonic velocities (both longitudinal and shear) measurements have been carried out at room temperature and at ultrasonic frequency of 4 MHz. Elastic moduli, Debye temperature, softening temperature, and Poisson's ratio have been obtained as a function of Er2O3 modifier content. Results show that the above-mentioned parameters have very slight change with the change of Er2O3 mol% content. Based on FTIR spectroscopy and theoretical (bond compression) model, quantitative analysis has been carried out in order to obtain more information about the structure of these glasses. The study indicated that the structure of these glasses is mainly composed of SiO4 units with four bridging oxygens (Q4), and with three bridging and one nonbridging oxygens (Q3). © 2006 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Gaafar, Mohamed El Sayed
Egypt, Giza
National Institute of Standards
Marzouk, Samir Yousef
Egypt, Giza
National Research Centre
Statistics
Citations: 130
Authors: 2
Affiliations: 2
Identifiers
Doi:
10.1016/j.physb.2006.06.132
ISSN:
09214526
Study Design
Cohort Study
Study Approach
Quantitative