TY - JOUR
T1 - Irradiation behavior of ground U(Mo) fuel with and without Si added to the matrix
AU - Leenaers, Ann
AU - Van den Berghe, Sven
AU - Van Renterghem, Wouter
AU - Charollais, Francois
AU - Lemoine, Patrick
AU - Jarousse, Christophe
AU - Rohrmoser, Anton
AU - Petry, Winfried
N1 - Score = 10
PY - 2011/4
Y1 - 2011/4
N2 - In the framework of the IRIS-TUM irradiation program, several full size, flat dispersion fuel plates containingground 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% 235U LEU-equivalent and showed a maximum thickness
increase of 323 lm (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.
AB - In the framework of the IRIS-TUM irradiation program, several full size, flat dispersion fuel plates containingground 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% 235U LEU-equivalent and showed a maximum thickness
increase of 323 lm (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.
KW - Ground MTR fuel
KW - U(Mo)
KW - microstructure
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_113123
UR - http://knowledgecentre.sckcen.be/so2/bibref/7959
U2 - 10.1016/j.jnucmat.2011.02.002
DO - 10.1016/j.jnucmat.2011.02.002
M3 - Article
SN - 0022-3115
VL - 412
SP - 41
EP - 52
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1
ER -