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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 53  1994
Processing Problems of High Alumina Body
P. G. PAL* AND B. N. SAMADDAR**
Pages : 55-60
DOI : 10.1080/0371750X.1994.10804634
Abstract
Excessive firing shrinkage and secondary re-crystallization cannot be controlled if alumina powder produced from Bayers process is exclusively used to develop dense alumina body. High alumina bodies having low firing shrinkage and controlled microstructure can, however, be developed using alumina powder from Bayers process and fused alumina grains with MgO in the form of magnesio-aluminate hydrate (MAH) as sintering aid. By introducing fine alumina powder pre-calcined at an optimum temperature, a part of fused alumina grains can be replaced. The possibility of formation of bodies involving the entire range of graded fused alumina and fine technical alumina powder has been explored.
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