Abstract
Dissolution of refactory oxides, such as Al2O3, in molten silicates has generally been considered to be a homogeneous reaction1–7. Homogeneous dissolution occurs when atoms of the solid dissolve directly into the liquid with atoms diffusing into the liquid and concentration gradients forming in the liquid at the interface. The dissolution rates are dependent upon transport in the molten silicate and proportional to the square root of time 2–4, 6–8. Heterogeneous dissolution, also referred to as in- congruent dissolution6, occurs when one or more solid reaction phases with compositions different from either the oxide or the liquid form at the solid-liquid interface. Since mass transport by diffusion is generally slower in solids than in liquids, transport in the solid will generally determine dissolution rates8.
Supported by the U.S. Department of Energy under Contract DE-ACO6-76RLO 1830.
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© 1987 Plenum Press, New York
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Lambert Bates, J. (1987). Interfaces in Heterogeneous Dissolution of Oxides in Molten Ca-Al-Silicates. In: Pask, J.A., Evans, A.G. (eds) Ceramic Microstructures ’86. Materials Science Research, vol 21. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1933-7_44
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DOI: https://doi.org/10.1007/978-1-4613-1933-7_44
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