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

M. A. Tunes; V. M. Vishnyakov; O. Camara; G. Greaves; P. D. Edmondson; Yanwen Zhang; S. E. Donnelly

doi:10.1016/j.mtener.2019.03.004

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

M. A. Tunes, V. M. Vishnyakov, O. Camara, G. Greaves, P. D. Edmondson, Yanwen Zhang, S. E. Donnelly

Chair of Nonferrous Metallurgy (520)

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

7 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 × 1016 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	12.2019
Issue number	June
Early online date	9 Apr 2019
DOIs	https://doi.org/10.1016/j.mtener.2019.03.004
Publication status	Published - 1 Jun 2019

Keywords

Accident tolerant fuels
Highly concentrated alloys
Ion beam sputter-deposition
Nuclear energy
Radiation damage

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10.1016/j.mtener.2019.03.004

Cite this

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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 × 1016 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.",

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T1 - A candidate accident tolerant fuel system based on a highly concentrated alloy thin film

AU - Tunes, M. A.

AU - Vishnyakov, V. M.

AU - Camara, O.

AU - Greaves, G.

AU - Edmondson, P. D.

AU - Zhang, Yanwen

AU - Donnelly, S. E.

PY - 2019/6/1

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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 × 1016 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 × 1016 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.

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KW - Highly concentrated alloys

KW - Ion beam sputter-deposition

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KW - Radiation damage

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JO - Materials Today Energy

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

Abstract

Keywords

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