Tripathi, Himansu Shekhar and Banerjee, Goutam (1998) Synthesis and mechanical properties of mullite developed from beach sand sillimanite: effect of Fe2O3. Transactions of the Indian Ceramic Society, 57 (6). pp. 137-140. ISSN 0371-750X

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Mullite aggregate was developed from sillimanite beach sand and calcined alumina by the reaction sintering route using 1–4 wt% Fe2O3, as additive. Effect of Fe2O3, on the densification behaviour, microstructure and thermomechanical properties of the aggregate was discussed. It was found that Fe2O3 favours densification process by liquid phase formation, thereby deteriorating the thermomechanical properties particularly at higher sintering temperature. Mullite formed without Fe2O3 additive at 1600°C was mostly equiaxed in nature whereas it was needle shaped with few occasional equiaxed mullite grains within the matrix when formed in presence of Fe2O3 at 1500°C. Up to 4.08 wt% Fe2O3 enters into the mullite structure by solid solution formation at 1500°C.

Item Type: Article
Subjects: Structural Clay Products
Divisions: Refractory
Depositing User: Bidhan Chaudhuri
Date Deposited: 13 Jul 2012 12:34
Last Modified: 11 Mar 2014 13:02

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