Výsledky vyhledávání - "F. Le Guyadec"

Influence of superficial oxidation on the pyrophoric behaviour of uranium hydride and uranium powders in air

Autor: J. Raynal, C. Ablitzer, X. Génin, F. Le Guyadec, A. Duhart-Barone

Publikováno v: Journal of Nuclear Materials. 432:135-145

Pyrophoric behaviours in air of uranium hydride and uranium powders have been studied on samples of small mass – several tens of milligrams – in a thermogravimetric device and on samples of several grams in an instrumented furnace. Results show t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6d82ae00e31acdf530299f5d68c9c2ee
https://doi.org/10.1016/j.jnucmat.2012.08.008

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Pyrophoric behaviour of uranium hydride and uranium powders

Autor: C. Ablitzer, X. Génin, F. Le Guyadec, O. Dugne, A. Duhart-Barone, J.P. Bayle

Publikováno v: Journal of Nuclear Materials. 396:294-302

Thermal stability and spontaneous ignition conditions of uranium hydride and uranium metal fine powders have been studied and observed in an original and dedicated experimental device placed inside a glove box under flowing pure argon. Pure uranium h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::959ba35bc39004b697dfec93a536dad3
https://doi.org/10.1016/j.jnucmat.2009.11.007

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Kinetic study of the UO2/C interaction by high-temperature mass spectrometry

Autor: C. Guéneau, S. Gossé, Christian Chatillon, Sylvie Chatain, F. Le Guyadec, T. Alpettaz

Publikováno v: Nuclear Engineering and Design
Nuclear Engineering and Design, 2008, ⟨10.1016/j.nucengdes.2008.01.019⟩

For very high-temperature reactors (V)-HTR, one of Generation IV future systems, the high-level operating temperature of the fuel materials in normal and accidental conditions requires the prediction of the possible chemical interactions between the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c60978f276bff1b91e495b5a9e44132b
https://doi.org/10.1016/j.nucengdes.2008.01.019

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Kinetics of interfacial reactions in molten U/solid Y2O3 system

Autor: N. Eustathopoulos, F. Le Guyadec, C. Tournier, B. Lorrain, L. Coudurier

Publikováno v: Journal of Nuclear Materials. 254:215-220

The reactivity between liquid uranium and polycrystalline yttria substrates of various grain-sizes is studied at 1673 K under high vacuum–low pO2 conditions ( p O 2 ≈10 −7 Pa ). At short contact times, uranium oxidation occurs at the metal/oxid

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e9b802261895ad7273144e495f56486
https://doi.org/10.1016/s0022-3115(97)00366-8

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Grain Boundary Penetration of Liquid Uranium in Polycrystalline Tungsten

Autor: F. Le Guyadec, P. Berthier, Jean Bernardini, M. Biscondi

Publikováno v: Defect and Diffusion Forum. :1541-1544

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f2ecc4e2f1cd276f6a58612db7290311
https://doi.org/10.4028/www.scientific.net/ddf.143-147.1541

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The influence of non-stoichiometry of oxides on their wettability by liquid metals

Autor: F. Le Guyadec, N. Eustathopoulos, B. Lorrain, C. Tournier

Publikováno v: Journal of Materials Science Letters. 15:485-489

Many oxides of technological importance, such as TiO2, ZrO2, UO2 and Y203, present significant ranges of non-stoichiometry. Despite this fact, there is little or no information available about the influence of non-stoichiometry on the wettabflity of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3063234c220097a8ae0a93720912f2c5
https://doi.org/10.1007/bf00275409

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Thermodynamic and experimental study of UC powders ignition

Autor: F. Le Guyadec, Christian Chatillon, Elisabeth Blanquet, S. Coullomb, S. Joffre, C. Rado

Publikováno v: Journal of Nuclear Materials
Journal of Nuclear Materials, Elsevier, 2009, 393 (2), pp.333-342. ⟨10.1016/j.jnucmat.2009.06.009⟩
Journal of Nuclear Materials, 2009, 393 (2), pp.333-342. ⟨10.1016/j.jnucmat.2009.06.009⟩

International audience; Mixed plutonium and uranium carbide (UPuC) is considered as a possible fuel material for future nuclear reactors. However, UPuC is pyrophoric and fine powders of UPuC are subject to temperature increase due to oxidation with a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afd17cc117fde4195330d2989d2933b5
https://hal.archives-ouvertes.fr/hal-00434236

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