NSUF 18-1593: Understand the Fission Products Behavior and Irradiation Effects in UCO Fuel Kernels of Irradiated AGR-1 and AGR-2 TRISO Fuel Particles by Using Atom Probe Tomography

TRISO-coated particle fuel is a center piece in developing the high temperature gas reactor, and the post-irradiation characterization is highly desired for improving the knowledge in understanding the fuel performance at normal and accident conditions and for providing qualification data and pathway in further improving the fuel fabrication process. In this proposal, we plan to characterize the irradiated AGR-1 and AGR-2 fuel kernels by using Atom Probe Tomography (ATP). The proposal APT work is aimed to complement our previously acquired knowledge using the FEI Titan with ChemiSTEM, particularly for quantifying the light element diffusion and segregation. More specifically, the APT tips will be prepared onto the sharpened tungsten wires of the half TEM grid (100 mesh), and this will allow for both TEM characterization and APT data acquisition. The gained knowledges will be used for understanding the correlations between the fuel performance and the fabrication process as part of efforts on the fuel qualification. The project PI is fully committed to meet the NSUF required research schedule and deliverable expectations.

Допълнителна информация

Поле	Стойност
Awarded Institution	University of Florida
Embargo End Date	2021-01-08
Facility Tech Lead	Alina Montrose, Mukesh Bachhav
NSUF Call	FY 2018 RTE 3rd Call
PI	Zhenyu Fu
Project Member	Yong Yang, Associate Professor - University of Florida (https://orcid.org/0000-0002-0247-6219)
Project Member	Dr. Isabella van Rooyen, Senior Technical Advisor Advanced Material Systems - Pacific Northwest National Laboratory (https://orcid.org/0000-0001-8524-938X)
Project Member	Mr. Zhenyu Fu, Research Assistant - University of Florida (https://orcid.org/0000-0002-0800-3121)
Project Notes	Awarded on 09/17/2018
Project Type	RTE
RTE Number	1593