| A Study of the Factors Influencing the Sinterability
of Uranium Dioxide |
S. V. K. RAO, ASHOK MOHAN, N. S. ANANDAN AND V. K. MOORTHY
Pages : 35-45
DOI : 10.1080/0371750X.1966.10855552 |
| Abstract |
| It was shown earlier that uranium dioxide derived from different compounds
exhibited variations in the sintering behaviour and to attain maximum densification,
the sintering should be carried out within a temperature range, specific for each
of the powders.
In the present work, the sintering behaviour of uranium dioxide derived
from ammonium diuranate prepared by different methods, was studied in an
atmosphere of hydrogen. Significant differences in the sintering ( densification)
behaviour of the powders was noted under identical sintering (firing) treatments.
The influence of variations in sintering treatment, such as rates of heating or
soaking periods, on the densification of the samples of different origins was
studied. It was found that the sintering behaviour depended on both the powder
characteristics and the sintering treatment. Attempts were made to relate the
origin and thermal history of the uo2 with its powder characteristics; and its
sintering behaviour to its powder characteristics and the firing treatments. Pellets
of high density and controlled microstructure can be prepared from urania powders
of varying characteristics, if firing treatments, avoiding pore entrapment during
any stage of sintering, are evolved for each of the powders. |
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