Abstract
The effect of different carbon sources and aluminum powder on porosity, size change and flexural strength of light weight alumina was examined. The results show that carbon sources not only increase the porosity content of sintered samples but also raise the shrinkage. By adding Al powder, the sintering shrinkage reduces and in the presence of carbon sources samples expand. With the same porosity content, samples containing Al powder present lower strength due to pore enlargement as the result of expansion.
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