Cationic effect of ionic transport properties of mixed alkaline-earth silicate ternaries

Yong Uk Han, Dong Joon Min

Research output: Contribution to conferencePaper

Abstract

The cationic effects on electrical conductivity and viscosity are investigated in of CaO-MgO-SiO2 and CaO-BaO-SiO2 melts. The antithetic tendencies for the effect of cation radius on electrical conductivity and viscosity are observed in silica-saturated composition and structurally relaxed compositions for both electrical conductivity and viscosity. Temperature dependence of each properties indicates that activation energy to overcome electrostatic energy is found to be dominant over strain field energy in structurally relaxed melt. Activation energy considerations are in agreement with Anderson-Stuart theory. The absence of electrostatic energy is confirmed by correlating two properties by Walden plot. The cationic effect of silicate melt structure is also studied by Raman spectroscopy of quenched slags. Degree of polymerization of melt is evaluated by calculating empirical NBO/T. NBO/T of silicate melts shows maxima in both systems in the vicinity of eutectic compositions in spite of fixed basicity leaving the equilibrium phase of the melts playing a key role in melt structure.

Original languageEnglish
Pages852-853
Number of pages2
Publication statusPublished - 2015 Jan 1
Event6th International Congress on the Science and Technology of Steelmaking, ICS 2015 - Beijing, China
Duration: 2015 May 122015 May 14

Other

Other6th International Congress on the Science and Technology of Steelmaking, ICS 2015
CountryChina
CityBeijing
Period15/5/1215/5/14

All Science Journal Classification (ASJC) codes

  • Metals and Alloys

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  • Cite this

    Han, Y. U., & Min, D. J. (2015). Cationic effect of ionic transport properties of mixed alkaline-earth silicate ternaries. 852-853. Paper presented at 6th International Congress on the Science and Technology of Steelmaking, ICS 2015, Beijing, China.