Characterization of Glass Ceramics Produced from Natural and Waste Raw Materials

Abstract:

Glass ceramics were prepared from fly ash, waste window glass and fluorite rawmaterials. Mixtures of raw materials were melted at 1300, 1400 and 1500 °C for 4 h and quenchedin cold water. The crystallization behavior of glass ceramics was investigated by differentialthermal analysis-thermogravimetry (DTA-TG). Crystallization at various temperatures (700, 800,900 and 1000 °C) for 30 min was used to obtain the glass ceramics. The obtained glass ceramicswere characterized by X-ray diffraction (XRD), light microscopy and hardness test. XRD studyrevealed that the crystallized phases were plagioclase-type minerals (diopside and albite). TheVickers hardness of the glass ceramics increased from 0.80±0.19 GPa to 6.35±0.35GPa and densityranged from 1.44 g/cm3 to 2.42 g/cm3 depending on the treatment temperature. Glass ceramicsprepared from fused glass melted at 1500 °C temperature showed the highest hardness comparedwith those melted at lower temperatures.

• Periodical: Solid State Phenomena (Volume 271)
• Pages: 23-27
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.271.23
• Online since: January 2018
• Authors: Uyat Bayarzul*, Jadambaa Temuujin
• Keywords: Crystallization, Fly Ash, Glass Ceramics, Hardness, Natural Minerals

References

[5] L. Barbieri, A. Corradi, I. Lancellotti, C. Leonelli, J. Ma. Rincon, M. Romero, J. Eur. Ceram. Soc. 20 (2000).

[10] 1637-1643.

[16] L. Barbieri, A.M. Ferrari, I. Lancellotti, C. Leonelli, J. Ma. Rincon, M. Romero, J. Am. Ceram. Soc., 83 (2000).

[10] 2515-20.

[21] Temuujin, J., Bayarzul, U., Surenjav, E., Kim, D.S., Chu, Y. S, J. Ceram. Process. Res., 18.

[2] (2017)112-115.