Effects of Additives on the Properties of SiO₂-B₂O₃-Al₂O₃-Na₂O-PbO System Glass Powders

Abstract:

The SiO₂-B₂O₃-Al₂O₃-Na₂O-PbO system glass powders were prepared by the high temperature water quenching and ball milling. The effects of CaO, Li₂O and ZnO with content of 1~5 wt.% on the glass-forming ability, softening temperature and crystallization behavior of the SiO₂-B₂O₃-Al₂O₃-Na₂O-PbO system glass powders were investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results showed that the glass crystallization tendency became obvious with the increase of CaO and Li₂O content, the melting temperature of the glass decreased with the addition of 1% Li₂O, while the effect of CaO with content lower than 2% on the formation of glass was not obvious. The addition of ZnO favored the formation of glass, however, the softening temperature of the glass increased with the increase of ZnO content. The softening temperature of the SiO₂-B₂O₃-Al₂O₃-Na₂O-PbO system glass powder decreased by 42.5°C with the addition of 2%CaO-1%Li₂O-1%ZnO.

• Periodical: Materials Science Forum (Volume 817)
• Pages: 582-586
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.817.582
• Online since: April 2015
• Authors: Qing Yang, Jin Yang Huang, Jun Tao Zou
• Keywords: Glass Powder, Glass-Forming Ability, Softening Temperature

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