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

Lingfeng He, Dennis Keiser Jr., J. Madden, Emmanuel Perez, Brandon D. Miller, Jian Gan, Wouter Van Renterghem, Ann Leenaers, Sven Van den Berghe

Research outputpeer-review


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

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