Analysis of Thermal Evolution of Si2U3/Al Calcined Miniplates
| Autor: | Paula Andrea Arboleda Zuluaga, Carlos Julian R. Gonzalez Oliver, D.S. Rodríguez |
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| Rok vydání: | 2015 |
| Předmět: |
Recubrimientos y Películas
Materials science oxidation WASTE CONDITIONING heat treatments Waste conditioning Intermetallic chemistry.chemical_element Sintering INGENIERÍAS Y TECNOLOGÍAS OXIDATION law.invention chemistry.chemical_compound SPENT NUCLEAR FUEL law Aluminium Ingeniería de los Materiales Differential thermal analysis Uranium oxide Calcination spent nuclear fuel Metallurgy General Medicine Uranium Spent nuclear fuel HEAT TREATMENTS purl.org/becyt/ford/2 [https] chemistry purl.org/becyt/ford/2.5 [https] |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| ISSN: | 2211-8128 |
| DOI: | 10.1016/j.mspro.2015.04.102 |
| Popis: | As part of a process called cerus for the conditioning of spent fuel elements from research reactors (which is about itsimmobilization in a sintered ceramic matrix of uranium oxide) were performed calcinations and sintering on an aluminumminiplate that representing a real plate from MTR fuel type, but containing natural Si2U3 instead of enriched. Product of heattreatments it results a complex multi-phase material, it was studied its behavior during and after heat treatments involved in thecerus process. There were performed differential thermal analysis (DTA) in air to 1250 °C, and X-ray diffraction at hightemperature (700-1100 °C) to elucidate which compounds were generated during the calcination and sintering and the momentwhen these transformations occur, and as a result there were obtained complex alloys of Al-U, and the formation of oxides ofaluminum and uranium. On the other hand, tests were carried out on compacted powder of calcined miniplates in a hightemperature microscope (HSM) and dilatometry to know their linear and surface response to the heating and sintering in order tocharacterize their individual contributions to the final material, resulting in an important expansion of about 25% which wasattributed to oxidants interactions and/or formation of uranium aluminides and silicides. Several intermetallic of Si-U and Al aswell as the generation of oxides of aluminum and uranium were found. Fil: Arboleda Zuluaga, Paula Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Universidad Nacional de Cuyo; Argentina Fil: Gonzalez Oliver, Carlos Julian R.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina Fil: Rodriguez, Diego Sebastian. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Universidad Nacional de Cuyo; Argentina |
| Databáze: | OpenAIRE |
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