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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 32  1973
Dunting of Whiteware Bodies
B. N. BHATTACHARYYA AND SUDHIR SEN
Pages : 21-28
DOI :10.1080/0371750X.1973.10840555
Abstract
The microstructures and other properties of three different samples of sanitarywares, one frequently suffering from dunting and other two free from such defect, were examined to identify and correlate the basic factors contributing to the formation and propagation of the cracks in vitrified ceramic bodies like sanitarywares. It has been obsen>ed that although free quartz may be responsible for the initiation of the micro-cracks, the possibility of their propagation is wholly controlled by the low fracture energy of the matrix. The amount and size of both primary and secondary mullites developed in the matrix play the most important role in increasing the fracture energy as well as strength of a body to eliminate the possibility of failure of the wares by dunting.
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