STEM-EDS/EELS and APT characterization of ZrN coatings on UMo fuel kernels

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Institutes & Expert groups

  • INL - Idaho national Laboratory

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DOI

Abstract

In the framework of the SELENIUM project, ZrN coated U-Mo fuel kernels were irradiated in the Belgium Reactor 2 of SCKCEN to a plate average burnup of 48% 235U and a local maximum burnup just below 70% 235U. The microstructure and chemical composition of ZrN coating before and after neutron irradiation have been analysed using scanning transmission electron microscopy (STEM) equipped with energy dispersive X-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS), and atom probe tomography (APT). The atomic ratio of N/Zr and fission product distribution determined by three techniques were compared and the combination of three techniques shows the advantages in characterization of chemical information for nuclear materials.

Details

Original languageEnglish
Pages (from-to)174-182
Number of pages9
JournalJournal of Nuclear Materials
Volume511
DOIs
StatePublished - 8 Sep 2018

Keywords

  • UMo coated particles, ZrN-coated fuel particules, Transmission electron microscopy, atom probe tomography

ID: 4828220