Abstract
The direct electrodeposition of CoFeNiMoW high entropy alloy (HEA) thin films from aqueous medium is demonstrated. By employing a citrate-containing bath and varying the applied current density (ic), HEAs with different compositions are obtained. Specifically, the composition of the HEA thin film obtained at ic = 50 mA cm−2 is Co30Fe21Ni19Mo25W5. The physical characterization of the HEA thin films is performed by energy dispersive x-ray spectrometry (EDS), grazing incidence x-ray diffraction (GIXRD), and 57Fe Mössbauer spectroscopy. Results confirm the presence and composition of the multicomponent HEA thin films and highlight galvanostatic electrodeposition as a simple, versatile, and cost-effective technique to create these HEA thin films.
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