Stability of zinc stearate under alpha irradiation in the manufacturing process of SFR nuclear fuels
| Autor: | Xavier Colin, Jackie Vermeulen, Fabienne Audubert, Laurent Venault, D. Baux, J. Gracia, T. Sauvage |
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| Přispěvatelé: | Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université d'Orléans (UO), Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université d'Orléans (UO), CEA Cadarache, Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Université d'Orléans (UO)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2018 |
| Předmět: |
Matériaux [Sciences de l'ingénieur]
Materials science Gas formation yield Pellets Polymères [Chimie] chemistry.chemical_element 02 engineering and technology Plutonium dioxide 010403 inorganic & nuclear chemistry 01 natural sciences 7. Clean energy [SPI.MAT]Engineering Sciences [physics]/Materials chemistry.chemical_compound Zinc stearate LET effect Irradiation MOX fuel Radiation Mécanique [Sciences de l'ingénieur] Metallurgy Radiochemistry Alpha particle [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] 021001 nanoscience & nanotechnology 0104 chemical sciences Plutonium [CHIM.POLY]Chemical Sciences/Polymers MOX fuels chemistry Alpha radiolysis Yield (chemistry) Radiolysis 0210 nano-technology |
| Zdroj: | Radiation Physics and Chemistry Radiation Physics and Chemistry, Elsevier, 2018, 144, pp.92-99. ⟨10.1016/j.radphyschem.2017.10.020⟩ Radiation Physics and Chemistry, 2018, 144, pp.92-99. ⟨10.1016/j.radphyschem.2017.10.020⟩ |
| ISSN: | 0969-806X |
| DOI: | 10.1016/j.radphyschem.2017.10.020 |
| Popis: | International audience; The manufacture of new fuels for sodium-cooled fast reactors (SFRs) will involve powders derived from recycling existing fuels in order to keep on producing electricity while saving natural resources and reducing the amount of waste produced by spent MOX fuels. Using recycled plutonium in this way will significantly increase the amount of 238Pu, a high energy alpha emitter, in the powders. The process of shaping powders by pressing requires the use of a solid lubricant, zinc stearate, to produce pellets with no defects compliant with the standards. The purpose of this study is to determine the impact of alpha radiolysis on this additive and its lubrication properties. Experiments were conducted on samples in contact with PuO2, as well as under external helium ion beam irradiation, in order to define the kinetics of radiolytic gas generation. The yield results relating to the formation of these gases (G0) show that the alpha radiation of plutonium can be simulated using external helium ion beam irradiation. The isotopic composition of plutonium has little impact on the yield. However, an increased yield was globally observed with increasing the mean linear energy transfer (LET). A radiolytic degradation process is proposed. |
| Databáze: | OpenAIRE |
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