General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DES-24-0200
Thesis topic details
Category
Engineering science
Thesis topics
Experimental study and modelling of high temperature oxidation of Cr coated zirconium alloy substrate
Contract
Thèse
Job description
This thesis concerns the research and development of materials more resistant in extreme conditions at high temperature. It is more specifically dedicated to the development of a new concept of nuclear fuel cladding : Cr coated Zr-based claddings. The purpose of this work is to adpat the Ekinox-Zr code, initially developped for the description of diffusion phenomena in uncoated Zr claddings, to Cr-coated Zr-based claddings and create a new code : “Ekinox-Zr-Cr”. This work will be divided into two parts : a modelling/simulation one and an experimental one dedicated to the determination of the diffusion coefficients of Cr, Zr and O species inside the different phases of the system. These data constitute essential parameters for the modelisation. High temperature oxidation experiments on Cr-coated claddings will also be used in order to improve our knowledge on the different mechanisms involved and compare them to the results obtained with the Ekinox-Zr-Cr code created during this study.
University / doctoral school
Sciences Mécaniques et Energétiques, Matériaux et Géosciences (SMEMaG)
Paris-Saclay
Thesis topic location
Site
Saclay
Requester
Position start date
01/10/2024
Person to be contacted by the applicant
TOFFOLON-MASCLET Caroline caroline.toffolon@cea.fr
CEA
DES/DRMP/S2CM/LM2T
DES/ISAS/DRMP/S2CM/LM2T
Bat.450 p.38
CEA Université Paris-Saclay
91191 Gif-sur-Yvette
01-69-08-97-39
Tutor / Responsible thesis director
MARTINELLI Laure laure.martinelli@cea.fr
CEA
DES/DPC/SCCME/LM2T
CEA/Saclay
0169085933
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