Journal of the American Ceramic Society · 1967 · 89 citations · 4 references
Natural SciencesChemistryMaterials ScienceInorganic ChemistryPhysical ChemistrySurface ScienceAlloysAluminum OxidesKinetics Of Phase TransformationsSurface KineticsSurface Reaction KineticsSurface ReactionsAlumina FormationLamellar MorphologyLamellar StructureSilica-based MaterialsSilicate ChemistrySurface Chemistry Of AluminaSurface Chemistry Of SilicaSurface Chemistry Of Silicates
Fused silica rods were exposed to molten aluminum and the rate of penetration of the reaction into the silica was measured over a range of temperatures. The reaction obeys the equation: image Three phases of alumina are formed during the reaction. The Group V elements, bismuth and antimony, markedly affect the rate of reaction. It is proposed that they form a lamellar surface compound with oxygen and water already absorbed on the silica surface. This compound then controls the reaction kinetics.
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