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The thermal conductivity and lattice parameter measurements in a low Ce content (U1− yCey)O2mixed oxide

Authors
Journal
Journal of Nuclear Materials
0022-3115
Publisher
Elsevier
Publication Date
Volume
342
Identifiers
DOI: 10.1016/j.jnucmat.2005.03.015

Abstract

Abstract The thermal diffusivities of (U 1− y Ce y )O 2 were measured from room temperature to 1673 K using laser flash method, and the lattice parameter was examined as a function of Ce contents using X-ray diffractometry to investigate the theoretical density of each composition. The thermal conductivities normalized to 95% of theoretical density decreased with increasing Ce contents. From the fitting results, it was shown that the increasing CeO 2 content as a solid solution affected the lattice contribution and that the effect of the electron contribution was added at higher Ce content.

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