Dense and smooth amorphous films of multicomponent FeCoNiCuVZrAl high-entropy alloy deposited by direct current magnetron sputtering

Abstract The multicomponent amorphous nitride films of FeCoNiCuVZrAl high-entropy alloy were deposited by direct current magnetron sputtering in the mixture atmosphere of Ar and N 2 . The systematical investigations demonstrate that the chemical composition, microstructure, and mechanical properties of the amorphous films intimately rely on the concentration of N 2 in the atmosphere mixture. When N 2 flow ratio increases from 0% to 50%, the thickness of the films decreases, whereas the roughness firstly decreases and then increases. At the N 2 flow ratio of 30%, a perfect dense and smooth amorphous nitride film could be achieved. While the hardness and Young’s modulus of the film reach the maximum values of 12 and 166 GPa, respectively.

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