Abstract
Mullite-zirconia-silicon carbide composites were synthesized from zircon flour, reactive alumina powder and a-SiC grains with Al powder and CeO2 additives with variable proportions of SiC and reactive alumina. The different physico-mechanical properties of the powder compacts after firing like, firing shrinkage, apparent porosity, bulk density and true density along with the phase composition and microstructure varied with the change in composition and the firing temperature. Al powder influenced the sintering of the composites positively and the proportion of mullite in the fired compacts increased with the increase in firing temperature.
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