Synthesis and characterisation of high-entropy alloy thin films as candidates for coating nuclear fuel cladding alloys

Matheus Araujo Tunes, Vladimir Vishnyakov, Stephen Donnelly

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Thin films of the quaternary system FeCrMnNi were synthesised by ion beam sputter-deposition. The films were deposited on a silicon substrate at approximately 350 K. A high-entropy alloy thin film (HEATF) and a non-equiatomic thin film were obtained. Energy Dispersive X-ray Spectroscopy (EDX) and Transmission Electron Microscopy (TEM) were used to determine thin film composition and the atomic structure. The non-equiatomic thin film exhibited a polycrystalline structure with nanometre-sized grains. Microstructural analysis of the HEATF, which had close to equimolar composition, showed large crystals and planar defects. The microstructural differences between the HEATF and the non-equiatomic thin film are discussed in terms of current high-entropy alloy theory, previous work on thin films and nucleation theory.
Original languageEnglish
Pages (from-to)115-120
Number of pages6
JournalThin Solid Films
Volume649
DOIs
Publication statusPublished - 1 Mar 2018

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