Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Effect of sulfuric acid concentration on corrosion behavior of Al0.1CoCrFeNi high-entropy alloy. / Sun, Y.; Lan, A.; Wang, Z. et al.
In: Journal of physics and chemistry of solids, Vol. 161, 110397, 28.02.2022.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Effect of sulfuric acid concentration on corrosion behavior of Al0.1CoCrFeNi high-entropy alloy
AU - Sun, Y.
AU - Lan, A.
AU - Wang, Z.
AU - Zhang, M.
AU - Qiao, J.
PY - 2022/2/28
Y1 - 2022/2/28
N2 - The influence of H2SO4 solution concentration on the corrosion behavior of as-cast Al0.1CoCrFeNi high-entropy alloys (HEAs) is investigated. The potentiodynamic polarization curves of the Al0.1CoCrFeNi HEA exhibit excellent corrosion resistance and a wide passive region (ΔE > 1150 mV) in acid solutions. The samples show a spontaneous passivation behavior in low-concentration (0.1, 0.2 and 0.3 M) and two anodic active–passive peaks in high-concentration (0.5 and 1.0 M) H2SO4 solutions. The morphology investigation by scanning electron microscopy suggests that selective corrosion is initiated from the inter-dendrite regions. The X-ray photoelectron spectroscopy results demonstrate that the observed passive behavior variation is associated with chemical composition change of the passive films.
AB - The influence of H2SO4 solution concentration on the corrosion behavior of as-cast Al0.1CoCrFeNi high-entropy alloys (HEAs) is investigated. The potentiodynamic polarization curves of the Al0.1CoCrFeNi HEA exhibit excellent corrosion resistance and a wide passive region (ΔE > 1150 mV) in acid solutions. The samples show a spontaneous passivation behavior in low-concentration (0.1, 0.2 and 0.3 M) and two anodic active–passive peaks in high-concentration (0.5 and 1.0 M) H2SO4 solutions. The morphology investigation by scanning electron microscopy suggests that selective corrosion is initiated from the inter-dendrite regions. The X-ray photoelectron spectroscopy results demonstrate that the observed passive behavior variation is associated with chemical composition change of the passive films.
U2 - 10.1016/j.jpcs.2021.110397
DO - 10.1016/j.jpcs.2021.110397
M3 - Journal article
VL - 161
JO - Journal of physics and chemistry of solids
JF - Journal of physics and chemistry of solids
SN - 0022-3697
M1 - 110397
ER -