Remarks on the sintering behavior of UO2-Gd2O3 fuel |
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| Authors: | M. Durazzo A.M. Saliba-Silva H.G. Riella |
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| Affiliation: | a Nuclear and Energy Research Institute, IPEN-CNEN/SP, São Paulo, Brazil
b Chemical Engineering Department, Santa Catarina Federal University, Florianópolis, Brazil |
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| Abstract: | The previous work by our group showed experimental evidence that supports the idea that a diffusion barrier is formed around Gd2O3 agglomerates due to the formation of gadolinium-rich (U,Gd)O2 phases with low diffusivity. This would be the reason for the bad sintering behavior of the UO2-Gd2O3 fuel. The objective of this investigation was to confirm that hypothesis by direct experimental evidence. Analysis of the results showed that the diffusion barrier hypothesis is not applicable. |
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