Irradiation behavior of ground U(Mo) fuel with and without Si added to the matrix

Autor:	W. Van Renterghem, P. Lemoine, F. Charollais, S. Van den Berghe, Winfried Petry, C. Jarousse, Ann Leenaers, A. Röhrmoser
Rok vydání:	2011
Předmět:	Nuclear and High Energy Physics Silicon Chemistry Fission Radiochemistry Analytical chemistry chemistry.chemical_element Concentration effect Nuclear Energy and Engineering Molybdenum General Materials Science Irradiation Post Irradiation Examination Dispersion (chemistry) Burnup
Zdroj:	Journal of Nuclear Materials. 412:41-52
ISSN:	0022-3115
Popis:	In the framework of the IRIS-TUM irradiation program, several full size, flat dispersion fuel plates containing ground U(Mo) fuel kernels in an aluminum matrix, with and without addition of silicon (2.1 wt.%), have been irradiated in the OSIRIS reactor. The highest irradiated fuel plate (with an Al–Si matrix) reached a local maximum burnup of 88.3% 235 U LEU-equivalent and showed a maximum thickness increase of 323 μm (66%) but remained intact. This paper reports the post irradiation examination results obtained on four IRIS-TUM plates. The evolution of the fission gas behavior in this fuel type from homogeneously dispersed nanobubbles to the eventual formation of large but apparently stable fission gas bubbles at the interface of the interaction layer and the fuel kernel is illustrated. It is also shown that the observed moderate, but positive effect of Si as inhibitor for the U(Mo)–Al interaction is related to the dispersion of this element in the interaction layer, although its concentration is very inhomogeneous and appears to be too low to fully inhibit interaction layer growth.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::092f2a56d446c37aaaf2aa46841513f2 https://doi.org/10.1016/j.jnucmat.2011.02.002 Zobrazit plný text záznamu Full Text from ScienceDirect