Výsledky vyhledávání - "Creton, Nicolas"

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Influence of the U3O7 domain structure on cracking during the oxidation of UO2

Autor: Desgranges, Lionel, Palancher, Hervé, Gamaléri, M., Micha, Jean-Sébastien, Optasanu, Virgil, Raceanu, Laura, Montesin, Tony, Creton, Nicolas

Publikováno v: Journal of Nuclear Materials 402, 2-3 (2010) 167-172

Cracking is observed when a UO_{2} single crystal is oxidised in air. Previous studies led to the hypothesis that cracking occurs once a critical depth of U_{3}O_{7} oxidised layer is reached. We present some \mu-Laue X-ray diffraction results, which

Externí odkaz: http://arxiv.org/abs/1301.2072

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Pre-Stressed Sub-Surface Contribution on Bulk Diffusion in Metallic Solids

Autor: Raceanu, Laura, Optasanu, Virgil, Montesin, Tony, Creton, Nicolas

Publikováno v: Defect and Diffusion Forum 309-310 (2011) 149-154

Our recent modelling works and corresponding numerical simulations realized to describe the UO2 oxidation processes confirm the theory showing that an applied mechanical strain can strongly affect the local oxygen diffusion in a stressed solid. This

Externí odkaz: http://arxiv.org/abs/1301.1619

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Internal Interface Strains Effects on UO2/U3O7 Oxidation Behaviour

Autor: Creton, Nicolas, Optasanu, Virgil, Garruchet, Sébastien, Montesin, Tony, Raceanu, Laura, Desgranges, Lionel, Dejardin, Steeve

Publikováno v: Defect and diffusion forum 297-301 (2010) 519-524

The growth of a U3O7 oxide layer during the anionic oxidation of UO2 pellets induced very important mechanical stresses due to the crystallographic lattice parameters differences between UO2 and its oxide. These stresses, combined with the chemical p

Externí odkaz: http://arxiv.org/abs/1004.5295

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Theoretical Study of Coupling Mechanisms between Oxygen Diffusion, Chemical Reaction, Mechanical Stresses in a Solid-Gas Reactive System

Autor: Creton, Nicolas, Optasanu, Virgil, Montesin, Tony, Garruchet, Sébastien

Publikováno v: Annales de Chimie - Sciences des Materiaux 33/Suppl.1 (2008) 165-172

This paper offers a study of oxygen dissolution into a solid, and its consequences on the mechanical behaviour of the material. In fact, mechanical strains strongly influence the oxidation processes and may be, in some materials, responsible for crac

Externí odkaz: http://arxiv.org/abs/0909.2950

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A thermodynamic approach of the mechano-chemical coupling during the oxidation of uranium dioxide

Autor: Creton, Nicolas, Optasanu, Virgil, Montesin, Tony, Garruchet, Sébastien, Desgranges, Lionel

Publikováno v: Defect and diffusion forum 289-292 (2009) 447-454

The aim of the present work is to introduce a thermodynamic model to describe the growth of an oxide layer on a metallic substrate. More precisely, this paper offers a study of oxygen dissolution into a solid, and its consequences on the apparition o

Externí odkaz: http://arxiv.org/abs/0909.2605

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Akademický článek

Impact of rolling conditions on the hydriding of grade 2 titanium welded tubes

Autor: LEPEMANGOYE La Chance, CRETON Nicolas, OPTASANU Virgil, DELOYE Elise, MONTESIN Tony, FUNDENBERGER Jean-Jacques, PERROUD Olivier

Publikováno v: MATEC Web of Conferences, Vol 321, p 09005 (2020)

In this article, we study the impact of rolling conditions on the texture of the commercially pure titanium grade 2. In a previous work, NEOTISS in collaboration with ICB laboratory, shown that the texture highly influences the precipitation of hydri

Externí odkaz: https://doaj.org/article/538de3d9c7bc412ab630fe1480c9977f