The corrosion resistance of Al-Fe-Co-Cr-Ni-Cu high entropy alloy coatings

Abstract

A high entropy alloy AlxFeCoCrNiCu (x=0.5, 1) coating was prepared by the electron beam evaporation method on the surface of the steel. The influence of aluminum content on the corrosion resistance of the coating is discussed. The obtained results show that the HEA coatings retain the HEA phase structure without any phase change. The polarization curves show that the high entropy alloy coating of Al0.5FeCoCrNiCu had better corrosion resistance in 0.5 mol/L H2SO4 solution and 1 mol/L NaCl solution. This design of the HEA coatings provides a novel method for steel corrosion-resistant materials.