A candidate accident tolerant fuel system based on a highly concentrated alloy thin film

Matheus Araujo Tunes; Vlad Vishnyakov; Osmane Camara; Graeme Greaves; Phil Edmondson; Y Zhang; Stephen Donnelly

doi:10.1016/j.mtener.2019.03.004

A candidate accident tolerant fuel system based on a highly concentrated alloy thin film

Matheus Araujo Tunes, Vlad Vishnyakov, Osmane Camara, Graeme Greaves, Phil Edmondson, Y Zhang, Stephen Donnelly

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

The feasibility of depositing a thin film of highly concentrated alloy on zircaloy-4 substrates at low temperatures was investigated. Electron microscopy characterisation at micro and nanoscales showed that the deposited thin film is near-equiatomic, single-phase and with all alloying elements uniformly distributed throughout the microstructure. Heavy-ion irradiations carried out in situ within a transmission electron microscope revealed the generation of both defect clusters and inert gas bubbles at around 1.5 × 10 ¹⁶ ions·cm ⁻² (15.4 dpa). Post-irradiation characterisation showed that the thin film preserved its solid solution and that, under the studied conditions, no elemental segregation or phase transformations were observed, indicating a high radiation tolerance.

Original language	English
Pages (from-to)	356-362
Number of pages	7
Journal	Materials Today Energy
Volume	12
Early online date	9 Apr 2019
DOIs	https://doi.org/10.1016/j.mtener.2019.03.004
Publication status	Published - Jun 2019

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2019 Materials Today Energy accepted paperAccepted author manuscript, 2.92 MBLicence: CC BY-NC-ND

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title = "A candidate accident tolerant fuel system based on a highly concentrated alloy thin film",

abstract = "The feasibility of depositing a thin film of highly concentrated alloy on zircaloy-4 substrates at low temperatures was investigated. Electron microscopy characterisation at micro and nanoscales showed that the deposited thin film is near-equiatomic, single-phase and with all alloying elements uniformly distributed throughout the microstructure. Heavy-ion irradiations carried out in situ within a transmission electron microscope revealed the generation of both defect clusters and inert gas bubbles at around 1.5 × 10 16 ions·cm −2 (15.4 dpa). Post-irradiation characterisation showed that the thin film preserved its solid solution and that, under the studied conditions, no elemental segregation or phase transformations were observed, indicating a high radiation tolerance. ",

keywords = "Highly concentrated alloys, Accident tolerant fuels, Radiation damage, Ion beam sputter-deposition, Nuclear energy",

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AU - Tunes, Matheus Araujo

AU - Vishnyakov, Vlad

AU - Camara, Osmane

AU - Greaves, Graeme

AU - Edmondson, Phil

AU - Zhang, Y

AU - Donnelly, Stephen

PY - 2019/6

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N2 - The feasibility of depositing a thin film of highly concentrated alloy on zircaloy-4 substrates at low temperatures was investigated. Electron microscopy characterisation at micro and nanoscales showed that the deposited thin film is near-equiatomic, single-phase and with all alloying elements uniformly distributed throughout the microstructure. Heavy-ion irradiations carried out in situ within a transmission electron microscope revealed the generation of both defect clusters and inert gas bubbles at around 1.5 × 10 16 ions·cm −2 (15.4 dpa). Post-irradiation characterisation showed that the thin film preserved its solid solution and that, under the studied conditions, no elemental segregation or phase transformations were observed, indicating a high radiation tolerance.

AB - The feasibility of depositing a thin film of highly concentrated alloy on zircaloy-4 substrates at low temperatures was investigated. Electron microscopy characterisation at micro and nanoscales showed that the deposited thin film is near-equiatomic, single-phase and with all alloying elements uniformly distributed throughout the microstructure. Heavy-ion irradiations carried out in situ within a transmission electron microscope revealed the generation of both defect clusters and inert gas bubbles at around 1.5 × 10 16 ions·cm −2 (15.4 dpa). Post-irradiation characterisation showed that the thin film preserved its solid solution and that, under the studied conditions, no elemental segregation or phase transformations were observed, indicating a high radiation tolerance.

KW - Highly concentrated alloys

KW - Accident tolerant fuels

KW - Radiation damage

KW - Ion beam sputter-deposition

KW - Nuclear energy

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JO - Materials Today Energy

JF - Materials Today Energy

SN - 2468-6069

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A candidate accident tolerant fuel system based on a highly concentrated alloy thin film

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