2019 Graduate Student Showcase
 

Title of Submission

Surrogate Nuclear Fuels Synthesis and Crack Behavior

Degree Program

Materials Science and Engineering, PhD

Major Advisor Name

Brian Jaques

Type of Submission

Scholarly Poster

Judging Session

Both Judging Sessions

Abstract

Behavior of ceramic nuclear fuels during power ramps and reactor transients is important due to higher risks of fuel failure during these operating conditions. This research focuses on the fabrication and crack behavior of ceria as a surrogate to urania in nuclear fuel applications. Fabrication techniques were optimized for microstructure, stoichiometry, and mechanical integrity. Samples were characterized using electron and optical microscopy, x-ray diffraction, Archimedes density, and oxygen analysis. CeO2 samples were 96%TD with 28µm grain sizes, and substoichiometric. Crack propagation behavior of the pellets was initiated using a novel rapid inductive heating technique developed to couple with in-situ imaging.

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