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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 51  1992
Strength and Thermal Shock Behaviour of Synthetic Mullite
P. Y. DALY! AND A. K. KULKARNI
Pages : 101-104
DOI : 10.1080/0371750X.1992.10804551
Abstract
Synthetic mullite prepared from clay alumina mixture was sintered around 1400°C and at 1600°C to obtain controlled porosity. The sintered compacll were subjected to thermal shock between l400°C and room temperature, and mechanical strength was evaluated by compres.-;ive test measurement> at room temperature. The porous (~20% OP) samples showed densification during thermal shocks. The compressive strength Increased up to five thermal cycles and decreased thereafter. The least porous (0.5 to 6% OP) samples retained the strength during thermal shocks while impervious(< 0.5% OP) samples showed steady increase in strength. The samples sintered at 1600°C, though Impervious, had low strength and cracked after five thermal cycles due to the separation of glas.ly phase from the matrix resulting In conchoidal fracture.
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