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Fabrication and characterization of CeO2 pellets for simulation of nuclear fuel

AuthorsGarcía-Ostos, C.; Rodríguez-Ortiz, J. A.; Arévalo, C.; Cobos, J.; Gotor, F.J. ; Torres, Y.
KeywordsC. Material properties
Issue DateMar-2016
CitationNuclear Engineering and Design 298: 160-167 (2016)
AbstractCerium Oxide, CeO, has been shown as a surrogate material to understand irradiated Mixed Oxide (MOX) based matrix fuel for nuclear power plants due to its similar structure, chemical and mechanical properties. In this work, CeO pellets with controlled porosity have been developed through conventional powder-metallurgy process. Influence of the main processing parameters (binder content, compaction pressure, sintering temperature and sintering time) on porosity and volumetric contraction values has been studied. Microstructure and physical properties of sintered compacts have also been characterized through several techniques. Mechanical properties such as dynamic Young's modulus, hardness and fracture toughness have been determined and connected to powder-metallurgy parameters. Simulation of nuclear fuel after reactor utilization with radial gradient porosity is proposed.
Publisher version (URL)https://doi.org/10.1016/j.nucengdes.2015.12.026
Appears in Collections:(ICMS) Artículos
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