Density, surface tension, and viscosity of PbO-B2O3-SiO2 glass melts

Shigeru Fujino, Chawon Hwang, Kenji Morinaga

    Research output: Contribution to journalArticlepeer-review

    39 Citations (Scopus)

    Abstract

    The density, surface tension, and viscosity of the melts from the PbO-B2O3-SiO2 system have been measured at temperatures in the range 1073-1473 K. The effect of composition on these properties was also investigated. The density of the melt was found to increase linearly with increasing PbO content. Molar volume was derived from the density data, and its deviation from the additivity of partial molar volumes was calculated. These deviations in molar volume from those obtained from additivity rules have been used along with the ratio of various coordination numbers of boron (as reported by Bray) to discuss the structure of the melts. The surface tension was found to decrease with decreasing SiO2/B2O3 ratio, and to increase in the range of the PbO content between 30 and 60 mol%, showing a maximum at ∼60 mol% PbO, and then decreased with further additions. This result suggested that the surface tension would be affected primarily by the B2O3 content in the range of the PbO content between 30-60 mol%, and mainly by the PbO content in the range of the PbO content >60 mol%, respectively. The viscosity of the melt was found to decrease linearly with increasing PbO content. The results obtained indicate that the increase in viscosity with B2O3 was half that of SiO2 (on a molar basis), and an empirical equation has been proposed for the viscosity as a function of mole fraction.

    Original languageEnglish
    Pages (from-to)10-16
    Number of pages7
    JournalJournal of the American Ceramic Society
    Volume87
    Issue number1
    DOIs
    Publication statusPublished - Jan 1 2004

    All Science Journal Classification (ASJC) codes

    • Ceramics and Composites
    • Geology
    • Geochemistry and Petrology
    • Materials Chemistry

    Fingerprint

    Dive into the research topics of 'Density, surface tension, and viscosity of PbO-B<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> glass melts'. Together they form a unique fingerprint.

    Cite this