Publications by authors named "Sylvain Dancette"
The formation of a white etching layer (WEL), a very hard and brittle phase on the rail surface, is associated with a progressive transformation of the pearlitic grain to very fragmented grains due to the cumulative passage of trains. Its formation is associated with a complex thermomechanical coupling. To predict the exact conditions of WEL formation, a thermomechanical model previously proposed by the authors needs to be validated.
View Article and Find Full Text PDFEnhancement of Interfacial Hydrogen Interactions with Nanoporous Gold-Containing Metallic Glass.
ACS Appl Mater Interfaces
September 2021
Article Synopsis
- Pd-based metallic glasses (MGs) outperform crystalline Pd nanofilms in hydrogen storage due to their unique grain-free structure and enhanced hydrogen-metal interaction dynamics.
- The study analyzes the effects of different pore architectures on the electrochemical hydrogenation of these materials, utilizing advanced imaging and spectroscopy techniques to observe the formation of nanocrystals in the MG.
- The results reveal that the size and spacing of substrate pores significantly influence ionic diffusion properties, allowing for tailored nanoporosity suitable for various alternating current (AC) and direct current (DC) applications.
In this study, finite element (FE) modeling of open-cell aluminum foams in tension was performed based on laboratory X-ray tomography scans of the materials at two different scales. High-resolution stitching tomography of the initial state allowed local intermetallic particles to be distinguished from internal defects in the solid phase of the foam. Lower-resolution scans were used to monitor the deformation and fracture in situ during loading.
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