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http://dx.doi.org/10.4191/KCERS.2003.40.10.1015

Kinetics and Mechanism of Corrosion of ρ-alumina Bonded Alumina Castable by Molten Slag  

천승호 (경남대학교 신소재공학부)
전병세 (경남대학교 신소재공학부)
Publication Information
Journal of the Korean Ceramic Society / v.40, no.10, 2003 , pp. 1015-1020 More about this Journal
Abstract
The Corrosion behavior of the matrix of the $\rho$-alumina bonded alumina vibrated castable was, on the basis of Jabsen's theory, elucidated by use of the Kingery's reaction mechanism. Corrosion of the matrix during induction period was controlled by the molecular diffusion. The temperature dependence of activation process is well established by the Arrhenius plots. The difference of Ca concentration between slag and interface is 23.2%, which causes a driving force of the materials transfer. The extent of the corrosion of the matrix is more deeper than that of the sintered mullite, but the corrosion mechanism can be well employed as the reaction mechanism proposed by the Kingery. The life time of the castable may be well estimated by the corrosion mechanism of Kingery.
Keywords
Corrosion; $\rho$-alumina bonded castable; Molecular diffusion; Natural convection;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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