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Densification behaviour of UO2–50%PuO2 pellets by dilatometry by T.R.G. Kutty; P.V. Hegde; R. Keswani; K.B. Khan; S. Majumdar; D.S.C. Purushotham is a Materials Science article available to read on EtoBox.

What is Densification behaviour of UO2–50%PuO2 pellets by dilatometry about?

The sintering behaviour of UO 2 ±50%PuO 2 pellets has been studied using a dilatometer in inert, reducing and oxidising atmospheres. The shrinkage begins at a much lower temperature in oxidising atmosphere such as CO 2 and commercial N 2 . The shrinkage rate was found to be maximum for pellets sintered in N 2 atmosphere. The mechanism for the initial stage of sintering was found to be volume diusion for both oxidising and reducing atmospheres. The activation energy for the initial stages of sintering was found to be 365 and 133 kJ/mol for Ar±8%H 2 and CO 2 atmospheres, respectively. The activation energy obtained using the Dorn method matches well with that obtained using the rate controlled sintering process. The lower activation energy obtained in the oxidising atmosphere is explained with the help of models available in the literature.

Who reads Densification behaviour of UO2–50%PuO2 pellets by dilatometry?

Author

T.R.G. Kutty; P.V. Hegde; R. Keswani; K.B. Khan; S. Majumdar; D.S.C. Purushotham

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-3115)

Published

1999

Language

EN

Field

Materials Science (Physical Sciences)