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Corrosion behavior of ZrO2-SiO2-Al2O3 refractories in lead silicate glass melts
, Article Journal of the European Ceramic Society ; Volume 31, Issue 5 , 2011 , Pages 715-721 ; 09552219 (ISSN) ; Ahmadi, A ; Kakooei, S ; Sadrnezhaad, S. K ; Sharif University of Technology
2011
Abstract
High-temperature (1200-1350°C) corrosion of fused-cast ZrO2-Al2O3-SiO2 (ZAS) refractory contacting lead silicate glass melt (LSG) containing 68.5wt% PbO was investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), differential scanning calorimetry (DSC), x-ray diffraction (XRD), thickness measurement and Archimedes density measurement. ZAS durability was improved by baddeliyete content and deteriorated with open porosity proportion, corundum percentage and eutectic mixture presence. Diffusion of lead resulted in fusion-temperature lowering of the glassy layers embedded within the ZAS particles. Heating caused viscosity drop across the interface, loosening the...