Mechanical properties and high temperature structure evolution of FeCrAlMoNb high entropy alloy coatings with different Mo contents for accident tolerant fuel cladding

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL Intermetallics Pub Date : 2025-04-01 Epub Date: 2025-01-22 DOI:10.1016/j.intermet.2025.108670

Sujuan Liu , Yu Wang , Miao Deng , Chunhai Liu , Jingyi Liang , Jun Yi , Weiwei Xiao

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Abstract

FeAlCrMoNb HEA coatings with different Mo contents were prepared on Zr-4 substrates via the magnetron sputtering method. The microstructure, mechanical properties and oxidation resistance of the FeAlCrMoNb coatings with different Mo contents were investigated in detail. The findings of the research revealed that the Mo_0.10, Mo_0.15 and Mo_0.25 coatings were almost amorphous with some BCC nanocrystals present, and the Mo_0.40 coating exhibited BCC structure. Compared with the other coatings, the Mo_0.10 coating had the best mechanical properties and oxidation resistance. During the steam oxidation process at 1100 °C, the formation of surface oxides prevented the entry of O, which endowed the Mo_0.10 coating with a good protective effect on the matrix. Finally, the steam oxidation mechanism of the Mo_0.10 coating was described in detail.

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耐事故燃料包壳中不同Mo含量FeCrAlMoNb高熵合金涂层的力学性能及高温组织演变

采用磁控溅射法在Zr-4衬底上制备了不同Mo含量的FeAlCrMoNb HEA涂层。研究了不同Mo含量FeAlCrMoNb涂层的显微组织、力学性能和抗氧化性能。研究结果表明，Mo0.10、Mo0.15和Mo0.25镀层基本呈无定形，存在少量BCC纳米晶，Mo0.40镀层呈现BCC结构。与其他涂层相比，Mo0.10涂层具有最佳的力学性能和抗氧化性能。在1100℃蒸汽氧化过程中，表面氧化物的形成阻止了O的进入，使Mo0.10涂层对基体具有良好的保护作用。最后详细阐述了Mo0.10涂层的蒸汽氧化机理。

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来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.