The Colorants Effects of Fe₂O₃ on Borosilicate Glasses Prepared from Subbituminous Fly Ash

Abstract:

In this work, the subbituminous fly ash (SFA) in Thailand has been investigated for their compositions and crystal structures. Borosilicate glasses were prepare from SFA , B₂O₃, Na₂O and various concentration of Fe₂O₃ by melt quenching technique. The results have shown that the chemical composition comprised with SiO₂, Al₂O₃ and Fe₂O₃. The crystal structures of SFA were raised of mullite and quartz phases. The density and refractive index values of glasses were found to increase with increasing of Fe₂O₃ concentrations. The hardness values have been decreased with increasing of Fe₂O₃ content. The absorption spectra are corresponding to ferric and ferrous ions in wavelength of 440 nm and 1,050 nm and the color of glasses are green to yellow.

• Periodical: Advanced Materials Research (Volume 1119)
• Pages: 731-735
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1119.731
• Online since: July 2015
• Authors: W. Rachniyom, Yotsakit Ruangtaweep, Kitipun Boonin, K. Phachana, J. Kaewkhao*
• Keywords: Borosilicate Glass, Recycling, Subbituminous Fly Ash

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