Abstract
Potentiostatic electrodeposition was used to obtain CoCrFeMnNi high-entropy alloy (HEA) thin films on copper substrate. An electrolyte based on a DMSO (dimethyl sulfoxide)-CH3CN (acetonitrile) organic compound was used for the HEA deposition. The microstructure of the high-entropy deposits before and after corrosion in artificial seawater was investigated by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) investigation. SEM analysis revealed that compact and uniform film consists of compact and uniform 50 nm–5 μm particles that form the HEA films. The successful co-deposition of all five elements was highlighted by the energy dispersive spectrometry investigation (EDS). Electrochemical measurements carried out in an aerated artificial seawater solution under ambient conditions demonstrated the promising potential for application in the field of anti-corrosion protection, due to the protective behavior of the HEA thin films.
Highlights
high-entropy alloy (HEA) are considered a new class of alloys based on an innovative approach
CoCrFeMnNi high-entropy alloys were prepared by potentiostatic electrodeposition at various potentials in the DMF-CH3CN organic system with LiClO4 additive
The presence of all elements in the HEA coating is highlighted by the energy dispersive spectrometry (EDS) results
Summary
HEAs are considered a new class of alloys based on an innovative approach. Unlike traditional alloys, these HEAs are based on equiatomic mixtures of five or more elements and do not have a main component. The possibility of obtaining at low processing temperatures and with low energy consumption thin films on substrates with a varied and complex geometry makes this method of electrodeposition to be achieved with simple control of the morphology, chemical composition, and thickness of HEA films by simple variation in the submission parameters Due to their special characteristics (good chemical and thermal stability, high electrical conductivity, wide working temperature range, wide electrochemical windows, lack of hydrogen release, and hydroxide generation), non-aqueous electrolytes are considered an optimal alternative for electrodeposition of metals and alloys [18,19,20]. Our group “investigated AlCrFeMnNi and AlCrCuFeMnNi high-entropy alloy thin films prepared by potentiostatic electrodeposition in an electrolyte based on a DMF (N,N-dimethylformamide)-CH3CN (acetonitrile) organic compound” [25] For corrosion protection, these new HEA alloys have a promising potential [26]. As no reports of a similar study have been made so far, we were not able to compare the obtained results and consider them to be new
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
