Author(s)

Feng He^1*, Zijun He², Junlin Xie¹, Yuhui Li^1,2

¹State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, China.
²Department of Materials Engineering, Monash University, Melbourne, Australia.

Among new low-melting-point glasses, bismuth ate glass is deemed to have the most potential as an environmentally friendly replacement for polluting Pb-containing glasses. Current studies of boro-bismuthate glasses focus on the structural influence of the additional oxide in the context of low-melting-point electronic sealing applications. In this study, the structure of quaternary Bi₂O₃- ZnO-B₂O₃-BaO glasses was investigated spectroscopic ally, with Fourier-transform-infrared (FT-IR) and Raman spectra recorded for glasses with different main oxide contents. Signals in the FT-IR are mainly observed around 500 cm^﹣1, 720 cm^﹣1, 840 cm^﹣1, 980 - 1080 cm^﹣1, and 1200 - 1500 cm^﹣1, while the Raman scattering peaks are located at 130 cm^﹣1, 390 cm^﹣1, 575 cm^﹣1, 920 cm^﹣1, and 1250 cm^﹣1. The glasses are mainly structured around [BO₃] units and the numbers of [BiO₆] and [BiO₃] units increase with the Bi₂O₃ content increasing. Concurrently, the FT-IR absorption peaks associated with [BO₄] units shift to lower wave numbers, indicating a loosening of the glass structure. However, as the B₂O₃ content is increased, the numbers of [BO₃] and [BO₄] units increase, while those of [BiO₃] and [BiO₆] units decrease, highlighting a densification of the glass structure. ZnO acts as a network modifier in these glasses.

IR and Raman Spectra, Bi₂O₃-ZnO-B₂O₃-BaO Quaternary Glass System, Structure

He, F. , He, Z. , Xie, J. and Li, Y. (2014) IR and Raman Spectra Properties of Bi₂O₃-ZnO-B₂O₃-BaO Quaternary Glass System. American Journal of Analytical Chemistry, 5, 1142-1150. doi: 10.4236/ajac.2014.516121.