Surface engineering of low enriched uranium–molybdenum

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Surface engineering of low enriched uranium–molybdenum. / Leenaers, Ann; Van den Berghe, Sven; Detavernier, Christophe.

In: Journal of Nuclear Materials, Vol. 440, 05.2013, p. 220-228.

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Leenaers, Ann ; Van den Berghe, Sven ; Detavernier, Christophe. / Surface engineering of low enriched uranium–molybdenum. In: Journal of Nuclear Materials. 2013 ; Vol. 440. pp. 220-228.

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@article{8336e21f56bf49c193e19366659873f7,
title = "Surface engineering of low enriched uranium–molybdenum",
abstract = "Recent attempts to qualify the LEU(Mo) dispersion plate fuel with Si addition to the Al matrix up to high power and burn-up have not yet been successful due to unacceptable fuel plate swelling at a local burnup above 60% 235U. The root cause of the failures is clearly related directly to the formation of the U(Mo)– Al(Si) interaction layer. Excessive formation of these layers around the fuel kernels severely weakens the local mechanical integrity and eventually leads to pillowing of the plate. In 2008, SCKCEN has launched the SELENIUM U(Mo) dispersion fuel development project in an attempt to find an alternative way to reduce the interaction between U(Mo) fuel kernels and the Al matrix to a significantly low level: by applying a coating on the U(Mo) kernels. Two fuel plates containing 8gU/cc U(Mo) coated with respectively 600 nm Si and 1000 nm ZrN in a pure Al matrix were manufactured. These plates were irradiated in the BR2 reactor up to a maximum heat flux of 470 W/cm2 until a maximum local burn-up of approximately 70% 235U was reached. Awaiting the PIE results, the advantages of applying a coating are discussed in this paper through annealing experiments and TRIM calculations.",
keywords = "MTR fuel, coated particles",
author = "Ann Leenaers and {Van den Berghe}, Sven and Christophe Detavernier",
note = "Score = 10",
year = "2013",
month = may,
doi = "10.1016/j.jnucmat.2013.04.068",
language = "English",
volume = "440",
pages = "220--228",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Surface engineering of low enriched uranium–molybdenum

AU - Leenaers, Ann

AU - Van den Berghe, Sven

AU - Detavernier, Christophe

N1 - Score = 10

PY - 2013/5

Y1 - 2013/5

N2 - Recent attempts to qualify the LEU(Mo) dispersion plate fuel with Si addition to the Al matrix up to high power and burn-up have not yet been successful due to unacceptable fuel plate swelling at a local burnup above 60% 235U. The root cause of the failures is clearly related directly to the formation of the U(Mo)– Al(Si) interaction layer. Excessive formation of these layers around the fuel kernels severely weakens the local mechanical integrity and eventually leads to pillowing of the plate. In 2008, SCKCEN has launched the SELENIUM U(Mo) dispersion fuel development project in an attempt to find an alternative way to reduce the interaction between U(Mo) fuel kernels and the Al matrix to a significantly low level: by applying a coating on the U(Mo) kernels. Two fuel plates containing 8gU/cc U(Mo) coated with respectively 600 nm Si and 1000 nm ZrN in a pure Al matrix were manufactured. These plates were irradiated in the BR2 reactor up to a maximum heat flux of 470 W/cm2 until a maximum local burn-up of approximately 70% 235U was reached. Awaiting the PIE results, the advantages of applying a coating are discussed in this paper through annealing experiments and TRIM calculations.

AB - Recent attempts to qualify the LEU(Mo) dispersion plate fuel with Si addition to the Al matrix up to high power and burn-up have not yet been successful due to unacceptable fuel plate swelling at a local burnup above 60% 235U. The root cause of the failures is clearly related directly to the formation of the U(Mo)– Al(Si) interaction layer. Excessive formation of these layers around the fuel kernels severely weakens the local mechanical integrity and eventually leads to pillowing of the plate. In 2008, SCKCEN has launched the SELENIUM U(Mo) dispersion fuel development project in an attempt to find an alternative way to reduce the interaction between U(Mo) fuel kernels and the Al matrix to a significantly low level: by applying a coating on the U(Mo) kernels. Two fuel plates containing 8gU/cc U(Mo) coated with respectively 600 nm Si and 1000 nm ZrN in a pure Al matrix were manufactured. These plates were irradiated in the BR2 reactor up to a maximum heat flux of 470 W/cm2 until a maximum local burn-up of approximately 70% 235U was reached. Awaiting the PIE results, the advantages of applying a coating are discussed in this paper through annealing experiments and TRIM calculations.

KW - MTR fuel

KW - coated particles

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_130234

UR - http://knowledgecentre.sckcen.be/so2/bibref/10429

U2 - 10.1016/j.jnucmat.2013.04.068

DO - 10.1016/j.jnucmat.2013.04.068

M3 - Article

VL - 440

SP - 220

EP - 228

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

ER -

ID: 159575