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-DAM-24-0286
Direction
DAM
Thesis topic details
Category
Condensed Matter Physics, chemistry, nanosciences
Thesis topics
Characterizations and modeling of metal tritide aging: application to palladium tritide
Contract
Thèse
Job description
Using alternative energy sources such as fusion requires the storage and use of great amount of hydrogen.
This thesis work is about the storage of hydrogen isotopes by palladium hydrides at low equilibrium pressure.
This solid state storage, which ensures both safety and compactness, is particularly interesting for tritium, the radioactive isotope of hydrogen which decay produces helium-3. Helium-3 tends to form nanobubbles which modify the physico-chemical properties of palladium tritide. This phenomenon is called aging. When helium-3 concentration reaches a critical value it is released in the gas phase which can lead to an increase in the storage facility.
In order to better understand and predict the aging phenomenon, material which are aged under tritium during several years are characterized. Studying microstructure, nanobubbles architecture, chemical composition and mechanical behavior evolutions. The acquired data are then used as inputs and outputs of the aging mechanisms modeling.
University / doctoral school
Sciences, Ingénierie et Environnement (SIE)
Paris XII
Thesis topic location
Site
Valduc
Requester
Person to be contacted by the applicant
Evin Bérengère berengere.evin@cea.fr
CEA
DAM Valduc
CEA Valduc
21120 Is-sur-Tille
Tutor / Responsible thesis director
PAUL-BONCOUR Valérie paulbon@icmpe.cnrs.fr
Université Paris Est
ICMPE-CMTR
2-8 rue Henri Dunant
94320 THIAIS CEDEX
01 49 78 12 07
En savoir plus
https://fr.linkedin.com/in/bérengère-evin