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Characterization of fresh EMPIrE and SEMPER FIDELIS plates made with PVD-coated U(Mo) particles

Abstract : The HERACLES group and the US-DOE work jointly to develop dispersed U(Mo)/Al as LEU fuel for conversion of high performance research reactors. Within this frame, two irradiation programs are in progress. In the first, EMPIrE, mini-plates are tested in the ATR reactor (USA) and in the second, SEMPER FIDELIS, full-size plates are irradiated in BR2 (Belgium). In both experiments, U(Mo)/Al plates with optimized microstructure are tested under aggressive conditions. This paper focuses on analyses made at CEA Cadarache on seven fresh plates made of atomized particles, with or without Mo homogenization, and with ZrN coating. Five EMPIrE mini-plates and two SEMPER FIDELIS full-size plates were examined by Optical Microscopy (OM), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS). A particular attention is paid to the integrity of the ZrN coating (thickness, cracks) and to the U(Mo) particles microstructure.
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Submitted on : Saturday, December 14, 2019 - 6:43:39 PM
Last modification on : Tuesday, April 28, 2020 - 11:28:14 AM
Long-term archiving on: : Sunday, March 15, 2020 - 2:01:02 PM


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  • HAL Id : cea-02339281, version 1




X. Iltis, H. Palancher, F. Vanni, J. Allenou, B. Stepnik, et al.. Characterization of fresh EMPIrE and SEMPER FIDELIS plates made with PVD-coated U(Mo) particles. RRFM 2018, Mar 2018, Munich, Germany. ⟨cea-02339281⟩



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