Kinetics and mechanism of corrosion of oxide coating fabricated on aluminum alloy by the plasma electrolytic oxidation in molten salt

Alexander Sobolev; Daniil Bograchev; Konstantin Borodianskiy; Michael Zinigrad

doi:10.1016/j.corsci.2022.110604

Kinetics and mechanism of corrosion of oxide coating fabricated on aluminum alloy by the plasma electrolytic oxidation in molten salt

Alexander Sobolev, Daniil Bograchev, Konstantin Borodianskiy, Michael Zinigrad

Ariel University

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

32 Scopus citations

Abstract

The kinetics and mechanism for the degradation of oxide coatings obtained by the Plasma Electrolytic Oxidation method in molten salts on AA1050 aluminum alloy were studied. The effect of the corrosive medium on the morphology and phase composition of the samples was investigated. The influence of the concentration of oxygen and chloride ions on the corrosion rate was studied. It is demonstrated that the polarization resistance of samples with oxide coatings is three orders of magnitude greater than that of the untreated alloy. The main features of the corrosion process are considered, and a corrosion mechanism is proposed.

Original language	English
Article number	110604
Journal	Corrosion Science
Volume	208
DOIs	https://doi.org/10.1016/j.corsci.2022.110604
State	Published - Nov 2022
Externally published	Yes

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Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

A. Aluminum
B. EIS
B. Electrochemical calculation
B. Polarization
C. Kinetic parameters
C. Oxide coatings

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10.1016/j.corsci.2022.110604

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title = "Kinetics and mechanism of corrosion of oxide coating fabricated on aluminum alloy by the plasma electrolytic oxidation in molten salt",

abstract = "The kinetics and mechanism for the degradation of oxide coatings obtained by the Plasma Electrolytic Oxidation method in molten salts on AA1050 aluminum alloy were studied. The effect of the corrosive medium on the morphology and phase composition of the samples was investigated. The influence of the concentration of oxygen and chloride ions on the corrosion rate was studied. It is demonstrated that the polarization resistance of samples with oxide coatings is three orders of magnitude greater than that of the untreated alloy. The main features of the corrosion process are considered, and a corrosion mechanism is proposed.",

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AU - Sobolev, Alexander

AU - Bograchev, Daniil

AU - Borodianskiy, Konstantin

AU - Zinigrad, Michael

PY - 2022/11

Y1 - 2022/11

N2 - The kinetics and mechanism for the degradation of oxide coatings obtained by the Plasma Electrolytic Oxidation method in molten salts on AA1050 aluminum alloy were studied. The effect of the corrosive medium on the morphology and phase composition of the samples was investigated. The influence of the concentration of oxygen and chloride ions on the corrosion rate was studied. It is demonstrated that the polarization resistance of samples with oxide coatings is three orders of magnitude greater than that of the untreated alloy. The main features of the corrosion process are considered, and a corrosion mechanism is proposed.

AB - The kinetics and mechanism for the degradation of oxide coatings obtained by the Plasma Electrolytic Oxidation method in molten salts on AA1050 aluminum alloy were studied. The effect of the corrosive medium on the morphology and phase composition of the samples was investigated. The influence of the concentration of oxygen and chloride ions on the corrosion rate was studied. It is demonstrated that the polarization resistance of samples with oxide coatings is three orders of magnitude greater than that of the untreated alloy. The main features of the corrosion process are considered, and a corrosion mechanism is proposed.

KW - A. Aluminum

KW - B. EIS

KW - B. Electrochemical calculation

KW - B. Polarization

KW - C. Kinetic parameters

KW - C. Oxide coatings

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VL - 208

JO - Corrosion Science

JF - Corrosion Science

M1 - 110604

ER -

Kinetics and mechanism of corrosion of oxide coating fabricated on aluminum alloy by the plasma electrolytic oxidation in molten salt

Abstract

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