Examination of microstructure and corrosion properties of novel AlCoCrFeNi multicomponent alloy
Dávid Miklós Kemény, Nikolett Miskolcziné Pálfi, Éva Fazakas
Abstract
Novel AlCoCrFeNi high entropy alloy thin films were prepared by electrochemical deposition methods. The thin films were co-deposited in an electrolyte based on a non-aqueous DMF (N,N-dimethylformamide)–CH3CN (acetonitrile) organic compound. The energy dispersive spectrometry investigation (EDS) shows that all five elements were successfully co-deposited and the scanning electron microscopy (SEM) analysis has revealed that the film in the case of AlCoCrFeNi shows high porosity after 120 min of deposition. The corrosion behavior of alloy in 3.5% NaCl solution is reported in this paper. The corrosion resistance has been evaluated using potentiodynamic polarization measurements. Our results show that the corrosion properties of the film were better than the copper substrate.