Maity, Soumen and Sarkar, Bijit Kumar (1996) Development of high-strength whiteware bodies. Journal of the European Ceramic Society, 16 (10). pp. 1083-1088. ISSN 0955-2219

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The effect of sillimanite sand as a replacement for quartz and alumina/cordierite glass-ceramic for feldspar was studied. Compositional variations were clue to the gradual incorporation of alumina in place of cordierite glass-ceramic. Increased replacement of cordierite glass-ceramic by alumina (20%) increased the flexural strength by 100%, giving a value of 195 MPa. Elastic modulus, microhardness and fracture toughness also showed sharp increases compared with values for conventional triaxial whiteware compositions. Improvement in mechanical properties was attributed to the presence of sillimanite and alumina particles present as fracture-resistant dispersoids in a viscous glassy matrix. Increased fracture behaviour is due to minimization of the glassy phase and limiting the size of Griffith's flaws. (C) 1996 Elsevier Science Limited.

Item Type: Article
Subjects: Whiteware
Depositing User: Bidhan Chaudhuri
Date Deposited: 30 Jul 2012 10:13
Last Modified: 30 Jul 2012 10:13

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