Transmission electron microscopy investigation of irradiated U-7 wt%Mo dispersion fuel

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Transmission electron microscopy investigation of irradiated U-7 wt%Mo dispersion fuel. / Van den Berghe, Sven; Van Renterghem, Wouter; Leenaers, Ann; Sannen, Leo (Peer reviewer).

In: Journal of Nuclear Materials, Vol. 375, No. 3, 30.04.2008, p. 340-346.

Research output: Contribution to journalArticlepeer-review

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@article{5160b085a68b41c59747dbe600311398,
title = "Transmission electron microscopy investigation of irradiated U-7 wt%Mo dispersion fuel",
abstract = "The microstructural evolution of atomised U-7 wt%Mo alloy fuel under irradiation was investigated by transmission electron microscopy on material from the experimental fuel plates used in the FUTURE irradiation. The interaction layer that forms between the U(Mo) particles and the A] matrix is assumed to become amorphous under irradiation and as such cannot retain the fission gas in stable bubbles. As a consequence, gas filled voids are generated between the interaction layer and the matrix, causing the fuel plate to pillow and finally fail. The present analysis confirms the assumption that the U(Mo)-Al interaction layer is completely amorphous after irradiation. The A] matrix and the individual U(Mo) particles, with their cellular substructure, have retained their crystallinity. It was furthermore observed that the fission gas generated in the U(Mo) particles has formed a bubble superlattice, which is coherent with the U(Mo) lattice. Bubbles of roughly 1-2 ran size have formed a 3-dimensional lattice with a lattice spacing of 6-7 nm.",
keywords = "POSTIRRADIATION EXAMINATION, MOLYBDENUM, URANIUM",
author = "{Van den Berghe}, Sven and {Van Renterghem}, Wouter and Ann Leenaers and Leo Sannen",
note = "Score = 10",
year = "2008",
month = apr,
day = "30",
doi = "10.1016/j.jnucmat.2007.12.006",
language = "English",
volume = "375",
pages = "340--346",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "3",

}

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TY - JOUR

T1 - Transmission electron microscopy investigation of irradiated U-7 wt%Mo dispersion fuel

AU - Van den Berghe, Sven

AU - Van Renterghem, Wouter

AU - Leenaers, Ann

A2 - Sannen, Leo

N1 - Score = 10

PY - 2008/4/30

Y1 - 2008/4/30

N2 - The microstructural evolution of atomised U-7 wt%Mo alloy fuel under irradiation was investigated by transmission electron microscopy on material from the experimental fuel plates used in the FUTURE irradiation. The interaction layer that forms between the U(Mo) particles and the A] matrix is assumed to become amorphous under irradiation and as such cannot retain the fission gas in stable bubbles. As a consequence, gas filled voids are generated between the interaction layer and the matrix, causing the fuel plate to pillow and finally fail. The present analysis confirms the assumption that the U(Mo)-Al interaction layer is completely amorphous after irradiation. The A] matrix and the individual U(Mo) particles, with their cellular substructure, have retained their crystallinity. It was furthermore observed that the fission gas generated in the U(Mo) particles has formed a bubble superlattice, which is coherent with the U(Mo) lattice. Bubbles of roughly 1-2 ran size have formed a 3-dimensional lattice with a lattice spacing of 6-7 nm.

AB - The microstructural evolution of atomised U-7 wt%Mo alloy fuel under irradiation was investigated by transmission electron microscopy on material from the experimental fuel plates used in the FUTURE irradiation. The interaction layer that forms between the U(Mo) particles and the A] matrix is assumed to become amorphous under irradiation and as such cannot retain the fission gas in stable bubbles. As a consequence, gas filled voids are generated between the interaction layer and the matrix, causing the fuel plate to pillow and finally fail. The present analysis confirms the assumption that the U(Mo)-Al interaction layer is completely amorphous after irradiation. The A] matrix and the individual U(Mo) particles, with their cellular substructure, have retained their crystallinity. It was furthermore observed that the fission gas generated in the U(Mo) particles has formed a bubble superlattice, which is coherent with the U(Mo) lattice. Bubbles of roughly 1-2 ran size have formed a 3-dimensional lattice with a lattice spacing of 6-7 nm.

KW - POSTIRRADIATION EXAMINATION

KW - MOLYBDENUM

KW - URANIUM

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_93622

UR - http://knowledgecentre.sckcen.be/so2/bibref/9357

U2 - 10.1016/j.jnucmat.2007.12.006

DO - 10.1016/j.jnucmat.2007.12.006

M3 - Article

VL - 375

SP - 340

EP - 346

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - 3

ER -

ID: 196298