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

Autor: Jian Gan, S. Van den Berghe, Mukesh Bachhav, E. Perez, W. Van Renterghem, Dennis D. Keiser, James W. Madden, Ann Leenaers, Lingfeng He, Brandon D. Miller
Rok vydání: 2018
Předmět:
Zdroj: Journal of Nuclear Materials. 511:174-182
ISSN: 0022-3115
DOI: 10.1016/j.jnucmat.2018.09.004
Popis: In the framework of the SELENIUM project, ZrN coated U-Mo fuel kernels were irradiated in the Belgium Reactor 2 of SCK•CEN 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.
Databáze: OpenAIRE