NSUF 20-4168: Ion Beam Irradiation and In-situ TEM characterization of High Entropy Titanate Pyrochlores

High entropy pyrochlores are a new type of ceramics and their use as a potential nuclear waste form are currently been investigated. While other high entropy pyrochlores have shown to have superior mechanical and thermal properties nothing is known about their ability to resist corrosion and radiation induced damage. For this proposal, we will combine ion beam irradiation and detailed transmission electron microscopy to analyze the structural changes of the high entropy pyrochlore when exposed to various dosages at set temperatures. With this we aim to find a correlation irradiation damage and the amount of disorder/entropy introduced into the pyrochlore system due the variation in cation sizes and mass, and the severe lattice deformation these variation cause. The experiment will be conducted on the samples produced at the Nuclear Material Laboratory at the Rensselaer Polytechnic Institute through the support of different program (DOE EFRC WastePD). The results obtained for this experiment will further the understanding of irradiation damage to ceramic waste forms and the role that entropy stabilization plays in reducing that damage.

מידע נוסף

שדה	ערך
Awarded Institution	Rensselaer Polytechnic Institute
Embargo End Date	2024-05-09
Facility Tech Lead	Alina Montrose, Wei-Ying Chen
Irradiation Facilities	Intermediate Voltage Electron Microscopy (IVEM)-Tandem Facility
NSUF Call	FY 2020 RTE 2nd Call
PI	Jie Lian
Project Member	Dr Jie Lian, Professor - Rensselaer Polytechnic Institute (https://orcid.org/0000-0002-9060-8831)
Project Member	Dr. Tiankai Yao, Staff Scientist and Nuclear Facility Engineer - Idaho National Laboratory (https://orcid.org/0000-0001-8330-7638)
Project Member	Mr Keith Bryce, Graduate Research Assistant - Rensselaer Polytechnic Institute (https://orcid.org/0000-0003-0511-0172)
Project Notes	Awarded on 07/14/2020
Project Type	RTE
RTE Number	4168