Density and structures of ternary silicate melts
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 65, 1498-1508
- https://doi.org/10.1039/tf9696501498
Abstract
Using the maximum bubble pressure method the (density, composition) relationships occurring as the result of replacement of Fe2+ ions in an iron silicate by Ca2+, Mn2+, Co2+ and Ni2+ ions along the composition line containing 29 mole % silica in the respective ternary silicate systems have been determined at 1410°C. The calculated (oxygen density, composition) relationships indicate that a change in the anionic configuration of ternary silicate melts occurs along iso-silica mole fraction lines in the system and this conclusion agrees with polymerization models of basic silicates. Correlation is obtained between the composition dependence of the activities of constituent metal oxides in ternary silicate melts and the composition dependence of the anionic configuration. The anionic configuration, or degree of polymerization of silicate anions occurring in a basic silicate melt, is discussed in terms of the relative energetics of possible ionic associations.Keywords
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