The Influence of Alumina-Zircon Fibers on The Mechanical, and Chemical properties of Silica-Based Ceramic Cores
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Abstract
Silica-based ceramic cores are significantly used in the investment casting process. For this purpose, they must exhibit sufficient flexural strength and thermal resistance. In this study, the effect of zircon-alumina fibers on the mechanical and chemical properties of the ceramic cores was evaluated. Samples were produced by injection molding under 12 kPa pressure and at 115 °C temperature. The impact of incorporating varying quantities (0, 1 and 2Wt %) of alumina-zircon fibers on the silica-based cores’ mechanical and chemical characteristics was examined. MOR, XRD, SEM and leachability characterization analysis were performed. The results reveals effective enhancement for mechanical and chemical properties. The Rheological Characterization demonstrate that the addition of fibers at 2 wt% effectively increased the viscosity and yield stress of the paste. Furthermore, The MOR results show that the flexural strength of cores increases up to 43% and the leachability enhances up to 44%.