journal article·2025-02

Study of pellet-clad bonding using heat treatment of axially cut slices of PWR fuel rod

L. Desgranges, J. Sercombe, Y. Pontillon

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Abstract

Slices of high burn-up nuclear fuel rod were prepared with or without an axial slit in the cladding or a central hole in the fuel. After identical heat treatment at 1200 °C, slices with cut cladding exhibited a wide opening of the slit while the uncut slices showed no major change of their cladding. Post-test examination evidenced that a layer made of High Burn-up Structure remained adherent to the cladding. Mechanical simulations indicated that this bonded HBS layer could be the reason for the cladding opening. These results confirmed that the HBS can be very tightly adherent to the cladding, as postulated in previous literature.
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Research context

OpenAlex topics: Nuclear Materials and Properties · Advanced materials and composites · Nuclear and radioactivity studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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