Liquidus temperature–composition model for multi-component glasses in the Fe, Cr, Ni, and Mn spinel primary phase field

We developed an extensive T L database of simulated high-level waste (HLW) glasses within the spinel primary phase field. Partial-molar T Ls, T i , were determined for all components that were systematically varied in database glasses ( i=Al, B, Ca, Cr, Fe, K, Li, Mg, Mn, Na, Ni, Si, Ti, U, and Zr)....

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Bibliographic Details
Published in:Journal of non-crystalline solids 2001-11, Vol.292 (1), p.1-24
Main Authors: Vienna, J.D, Hrma, P, Crum, J.V, Mika, M
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
CHEMICAL COMPOSITION
Chemical industry and chemicals
CHROMIUM OXIDES
Condensed matter: structure, mechanical and thermal properties
Equations of state, phase equilibria, and phase transitions
Exact sciences and technology
GLASS
Glasses
IRON OXIDES
MANGANESE OXIDES
MATERIALS SCIENCE
NICKEL OXIDES
PHASE STUDIES
Physics
Pollution
Radioactive wastes
Radioactive wastes, waste disposal
Solid-liquid transitions
Specific phase transitions
SPINELS
Structure, analysis, properties
THERMODYNAMICS
Wastes
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Summary:We developed an extensive T L database of simulated high-level waste (HLW) glasses within the spinel primary phase field. Partial-molar T Ls, T i , were determined for all components that were systematically varied in database glasses ( i=Al, B, Ca, Cr, Fe, K, Li, Mg, Mn, Na, Ni, Si, Ti, U, and Zr). A clear relationship was found between the T i values and ion potential. This led to a new model that can accurately predict the T L of glasses within component concentration ranges of the database. The model gives slightly better predictability than a first-order expansion of T L in composition while using only half of the fitted parameters and offers an improvement in predictability over previously published models. The success of this model gives insight to the nature of component effects on T L, which warrants further investigation. Specifically, the concentrations of glass components appear to be influential on T L in proportion to the character of their bonds or their ionic potential.
ISSN:0022-3093
1873-4812
DOI:10.1016/S0022-3093(01)00874-2