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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 37  1978
Sintered Mullite From China Clay-Alumina Mixtures*
S. VENKATARAMANI** AND E. C. SUBBARAO
Pages : 225-235
DOI : 10.1080/0371750X.1978.10840707
Abstract
China clay-alumina mixtures were sintered at 1400- 16000C for 2-12 hrs. Four different sources of alumina and a variety of mineralisers were evaluated. Mullitization from 40 to 100 per cent takes place, depending upon the fineness of alumina, clay/alumina ratio, sintering temperature, and time and mineralisers. Finer alumina and a clay/alumina ratio of 57/43 are preferable. Transition metal oxides were generally more effective and the optimum amount was about 1 per cent. Porosity of the sintered products varied between 4 and 40 per cent.
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