Physics – Condensed Matter – Materials Science
Scientific paper
2009-09-16
Annales de Chimie - Sciences des Materiaux 33/Suppl.1 (2008) 165-172
Physics
Condensed Matter
Materials Science
Scientific paper
10.3166/acsm.33.supp1.165-172
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 cracking. To realize this study, mechanical considerations are introduced into the classical diffusion laws. Simulations were made for the particular case of uranium dioxide, which undergoes the chemical fragmentation. According to our simulations, the hypothesis of a compression stress field into the oxidised UO2 compound near the internal interface is consistent with some oxidation mechanisms of oxidation experimentally observed. More generally, this work will be extended to the simulation to an oxide layer growth on a metallic substrate.
Creton Nicolas
Garruchet Sébastien
Montesin Tony
Optasanu Virgil
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