Effects of alloying concentration on the aqueous corrosion and passivation of aluminum-manganese-molybdenum concentrated alloys

Jia Chen; Jianwei Xiao; Chang Yu Hung; Wenbo Wang; Jing Zhao; F. Marc Michel; Chuang Deng; Wenjun Cai

doi:10.1016/j.corsci.2022.110137

Effects of alloying concentration on the aqueous corrosion and passivation of aluminum-manganese-molybdenum concentrated alloys

Jia Chen, Jianwei Xiao, Chang Yu Hung, Wenbo Wang, Jing Zhao, F. Marc Michel, Chuang Deng, Wenjun Cai

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

The effects of alloying concentration on the aqueous corrosion behavior of aluminum-manganese-molybdenum (Al-Mn-Mo) alloys with 8–20 at% Mn and 0–30 at% Mo were investigated by experiments and atomistic simulations. The pitting potential of Al-Mn-Mo increased with Mo% from − 0.16–0.49 V. The passive film thickness depended on the total alloy concentration, while its compactness and defect density on the individual ones. Specifically, Al₈₀Mn₈Mo₁₂ exhibited higher corrosion resistance than Al₈₀Mn₂₀ due to the formation of a more compact and less defective passive film, as explained by the roles Mo played in both the substrate and the passive film.

Original language	English
Article number	110137
Journal	Corrosion Science
Volume	198
DOIs	https://doi.org/10.1016/j.corsci.2022.110137
State	Published - Apr 15 2022
Externally published	Yes

Funding

This research was financially supported by the US National Science Foundation DMR-1856196 and DMR-2104655 . The authors would like to thank the support from the Nanoscale Characterization and Fabrication Laboratory at Virginia Tech. J.X. and C. D. acknowledge the use of computing resources provided by WestGrid and Compute/Calcul Canada. This research was financially supported by the US National Science Foundation DMR-1856196 and DMR-2104655. The authors would like to thank the support from the Nanoscale Characterization and Fabrication Laboratory at Virginia Tech. J.X. and C. D. acknowledge the use of computing resources provided by WestGrid and Compute/Calcul Canada.

Keywords

Al alloys
Corrosion
Molecular dynamics simulation
Passivation
Transmission electron microscopy
X-ray photoelectron spectroscopy

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10.1016/j.corsci.2022.110137

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title = "Effects of alloying concentration on the aqueous corrosion and passivation of aluminum-manganese-molybdenum concentrated alloys",

abstract = "The effects of alloying concentration on the aqueous corrosion behavior of aluminum-manganese-molybdenum (Al-Mn-Mo) alloys with 8–20 at% Mn and 0–30 at% Mo were investigated by experiments and atomistic simulations. The pitting potential of Al-Mn-Mo increased with Mo% from − 0.16–0.49 V. The passive film thickness depended on the total alloy concentration, while its compactness and defect density on the individual ones. Specifically, Al80Mn8Mo12 exhibited higher corrosion resistance than Al80Mn20 due to the formation of a more compact and less defective passive film, as explained by the roles Mo played in both the substrate and the passive film.",

keywords = "Al alloys, Corrosion, Molecular dynamics simulation, Passivation, Transmission electron microscopy, X-ray photoelectron spectroscopy",

author = "Jia Chen and Jianwei Xiao and Hung, {Chang Yu} and Wenbo Wang and Jing Zhao and {Marc Michel}, F. and Chuang Deng and Wenjun Cai",

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T1 - Effects of alloying concentration on the aqueous corrosion and passivation of aluminum-manganese-molybdenum concentrated alloys

AU - Chen, Jia

AU - Xiao, Jianwei

AU - Hung, Chang Yu

AU - Wang, Wenbo

AU - Zhao, Jing

AU - Marc Michel, F.

AU - Deng, Chuang

AU - Cai, Wenjun

PY - 2022/4/15

Y1 - 2022/4/15

N2 - The effects of alloying concentration on the aqueous corrosion behavior of aluminum-manganese-molybdenum (Al-Mn-Mo) alloys with 8–20 at% Mn and 0–30 at% Mo were investigated by experiments and atomistic simulations. The pitting potential of Al-Mn-Mo increased with Mo% from − 0.16–0.49 V. The passive film thickness depended on the total alloy concentration, while its compactness and defect density on the individual ones. Specifically, Al80Mn8Mo12 exhibited higher corrosion resistance than Al80Mn20 due to the formation of a more compact and less defective passive film, as explained by the roles Mo played in both the substrate and the passive film.

AB - The effects of alloying concentration on the aqueous corrosion behavior of aluminum-manganese-molybdenum (Al-Mn-Mo) alloys with 8–20 at% Mn and 0–30 at% Mo were investigated by experiments and atomistic simulations. The pitting potential of Al-Mn-Mo increased with Mo% from − 0.16–0.49 V. The passive film thickness depended on the total alloy concentration, while its compactness and defect density on the individual ones. Specifically, Al80Mn8Mo12 exhibited higher corrosion resistance than Al80Mn20 due to the formation of a more compact and less defective passive film, as explained by the roles Mo played in both the substrate and the passive film.

KW - Al alloys

KW - Corrosion

KW - Molecular dynamics simulation

KW - Passivation

KW - Transmission electron microscopy

KW - X-ray photoelectron spectroscopy

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VL - 198

JO - Corrosion Science

JF - Corrosion Science

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ER -

Effects of alloying concentration on the aqueous corrosion and passivation of aluminum-manganese-molybdenum concentrated alloys

Abstract

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Keywords

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