Effect of different ceria content on phase formation and properties of mullite zirconia ceramics

Y. L. BRUNI; M.S. CONCONI; L.B. GARRIDO; E.F. AGLIETTI

Foz de Iguazú

Congreso; 54° Congresso brasileiro de ceramica; 2010

Composites of the CaO?Al2O3?ZrO2 system are widely used in many industrial applications. In this study, porous Ca stabilized ZrO2 composites were developed from a starting mixture of m-ZrO2 and calcium aluminate cement. Ceramics were produced by wet consolidation of aqueous suspensions with and without corn starch as pore former agent and sintering at 1000-1500 °C. The influence of processing parameters on crystalline phases, sintering behavior and textural characteristics was examined. Stabilized c-ZrO2 formed with the composition of Ca0.15Zr0.85O1.85. The sintering of the mixtures lead to porous composites materials. Textural properties were analyzed considering the initial composition and the present crystalline phases.