Abstract
The corrosion resistance of multi-principal element alloy (MPEA) films is complex dependent on their composition. The purpose of this paper is to explain the relationship between the corrosion resistance and the Cu content of AlCuxNiTiZr MPEA films. AlCuxNiTiZr films were deposited by magnetron sputtering. Their corrosion resistance in 3.5 wt. % NaCl was studied by potentiodynamic polarization experiment and inductively coupled plasma emission spectroscopy. In this paper, the potentiodynamic polarization curve is analyzed from the perspective of corrosion type and corrosion control. Combined with x-ray photoelectron spectroscopy, the change in corrosion current density in AlCuxNiTiZr films is explained.
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