The cationic effect on properties and structure of CaO-MgO-SiO2 melts

Yong Uk Han, Dong Joon Min

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A study on the effect of cation species on the viscosity and electrical conductivity of CaOMgO- SiO2 system is carried out. Rotating cylindrical and two-plate method is used for viscosity and electrical conductivity measurements, respectively. Raman spectroscopy is also carried out to understand the structure of the slags. Experimental results indicated that the cationic effect on viscosity and ionic conductivity is governed by classical Anderson-Stuart theory: The dominance of electrostatic interaction on steric hindrance is confirmed for depolymerized melts (NBO/T=2.0). For polymerized melts (NBO/T=0), however, the major cationic effect on transport properties are examined to be a strain field distortion energy. The viscosity and ionic electrical conductivity are in strong correlation and assumed as the structure-dependent property. The structure of polymerized melts is also affected by the transition in primary solidification phase: Abnormal changes in properties and structure are observed at diopside congruent composition. Such a change at the congruent composition is assured by the entropy calculation and the stability function, ψ.

Original languageEnglish
Title of host publicationAdvances in Molten Slags, Fluxes, and Salts
Subtitle of host publicationProceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016
EditorsRamana G. Reddy, Pinakin Chaubal, P. Chris Pistorius, Uday Pal
PublisherSpringer International Publishing AG
Pages501-509
Number of pages9
ISBN (Print)9783319486253
DOIs
Publication statusPublished - 2017
Event10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016 - Seattle, United States
Duration: 2016 May 222016 May 25

Publication series

NameAdvances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016

Other

Other10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016
CountryUnited States
CitySeattle
Period16/5/2216/5/25

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

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  • Cite this

    Han, Y. U., & Min, D. J. (2017). The cationic effect on properties and structure of CaO-MgO-SiO2 melts. In R. G. Reddy, P. Chaubal, P. C. Pistorius, & U. Pal (Eds.), Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016 (pp. 501-509). (Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016). Springer International Publishing AG. https://doi.org/10.1007/978-3-319-48769-4_53