Transactions of the INDIAN CERAMIC SOCIETY Vol. 27 1968
Role of Crystallinity in the Sintering of
Urania Powders*
V. K. MOORTHY AND S. V. K. RAO
Pages : 16-30
DOI : 10.1080/0371750X.1968.10855626
Abstract
The crystallinity in U02 powders prepared by the ADU route at different calcination
temperatures (600°-l600°C) and its influence on their sintering behaviour (sintering
temperature 1000°-l600°C) in hydrogen were studied by X-ray difiraction techniques.
Powder patterns were made for the loose powders and back reflection for the
sintered pellets. It was noticed that higher the calcination temperature, the greater
was the degree of crystallinity developed in the powders and poorer was their sinterability.
The crystqllinity of the sintered pellets was mainly dependent on the sintering
temperature and crystallinity of the original powder and is not directly related to the
sintered density. By sintering pellets of poorly crystalline powders at low temperatures
(about 1200°C) sintered pellets of near theoretical density but with poorly developed
crystallinity could be obtained.
