Corrosion Behavior and Surface Characterization of Medium-Entropy Alloy Under Different Media Conditions.

ABSTRACT: The corrosion characteristics and passive behavior of as-cast Ni₄₀Fe₃₀Co₂₀Al₁₀ medium-entropy alloy (MEA) fabricated by the vacuum arc melting technique were investigated in 3.5 wt.% NaCl, 0.5 M HCl, and 0.5 M H₂SO₄ solutions. Although the impact of different solutions on the corrosion current density was not pronounced, the corrosion potential values of MEAs in H₂SO₄, HCl and NaCl solutions were -0.37, -0.58 and -1.16 V, respectively, indicating that the resistance to general corrosion in acidic solutions becomes strengthened. Through electrochemical passive region tests, surface morphology analysis and ICP testing, it was found that, due to the high-entropy effect and uniform single-phase structure, a

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC11901315 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature