The Effect of PbO on the Physical and Structural Properties of Borate Glass System

Abstract:

Borate is one of the most popular oxide glass being used in glass research world wide. Due to good reputation, therefore lead sodium borate glasses with compositions (90 - x) B₂O₃ + 10ZnO + xPbO (where = 15, 20, 25, 30 and 35 mol %) have been prepared by using melt-quenching method. In this work, their physical and structural properties with respect to PbO content has been investigated. The densities of these glass samples were increased from 3946.2 kg/m³ to 5107.2 kg/m³ with an increase in PbO concentration. The molar volume are found to vary from 23.78 × 10^-6 m³mol^-1 to 24.39 × 10^-6 m³mol^-1 with respect to PbO content as well. The density and molar volume show inversed result respectively. The FTIR spectral analysis indicates that with the addition of PbO contents in the glass network, structural units of BO₃ are transformed in BO₄. There are no sharp peaks were observed in XRD patterns of the glass samples which confirmed the amorphous nature of the glass. Meanwhile, the micro hardness of these glass samples were also increased from 189 Pa to 355 Pa with increases on PbO content. The results will be discussed and presented in details.

• Periodical: Materials Science Forum (Volume 846)
• Pages: 177-182
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.846.177
• Online since: March 2016
• Authors: Mardhiah Abdullah, S.N.E. Shafieza, Azman Kasim, Azhan Hashim
• Keywords: FTIR, Lead Borate, Melt Quenching, Molar Volume, X-Ray Diffraction

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