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

THIN SOLID FILMS

卷:649

Article

Tunes, Matheus A.¹  Vishnyakov, Vladimir M.¹  Donnelly, Stephen E.¹ 

[1] Univ Huddersfield, Sch Comp & Engn, Huddersfield HD1 3DH, W Yorkshire, England

关键词: Ion-beam sputter-deposition;    High entropy alloys;    Transmission electron microscopy;    Energy dispersive X-ray spectroscopy;    Accident tolerant fuels;   

DOI  :  10.1016/j.tsf.2018.01.041

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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