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Kinetics of uranium-dioxide sintering between 950°C and 1500°C in dry hydrogen atmosphere

Authors
Journal
Journal of the Less Common Metals
0022-5088
Publisher
Elsevier
Publication Date
Volume
10
Issue
3
Identifiers
DOI: 10.1016/0022-5088(66)90109-3

Abstract

Abstract The kinetics of sintering of UO 2 compacts prepared from ammonium diuranate and calcined at 800°C have been studied in the temperature range 950–1500°C, in dry hydrogen atmosphere. The bulk density D s achieved at a desired period, has been determined by measuring the change in the volume of the pellets. At all temperatures studied, the bulk density and the sintering period t have been related by the expression D s = C log t + X, where C and X are constants. From these results the activation energy of the process has been evaluated and the mean value has been found to be 102 ± 10 kcal/mole.

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