GAMBARO , S.

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Aiming to evaluate the effect of refractory metal additions to a quinary AlCoCrFeNi High-Entropy Alloy (HEA), three novel equimolar AlCoCrFeNi-X (X = Mo, Ta, W) HEAs were designed, arc-melted, annealed, and characterized by SEM-EDS, XRD and microhardness measurements. CALPHAD thermodynamic calculations were exploited to design compositions and...

Within the context of the design of high-temperature brazing process for C and SiC-based composites, a basic study is presented here about the wetting and interfacial reactivity of Co–Ta alloys in contact with graphite or SiC. Wetting results are presented for the first time showing that Co–Ta alloys wet C or SiC fairly or excellently depending...

Several industrial processes involving SiC coupling to Al–Ti alloys (e.g. metallization of SiC components, brazing of SiC parts) require an in-depth knowledge of Al–Ti/SiC interactions occurring at high temperatures. To this end, the surface reactivity between SiC and Al–Ti alloys (Al3Ti and (Al + Al3Ti) systems) was analyzed by specific...