Influence of multilayered polymer coatings on the corrosion behaviour and microstructures of Al6061-T6 alloy

Temitope Olumide Olugbade

doi:10.1016/j.colsurfa.2024.133901

Influence of multilayered polymer coatings on the corrosion behaviour and microstructures of Al6061-T6 alloy

Temitope Olumide Olugbade (Lead / Corresponding author)

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Abstract

The influence of multilayered polymer coatings on the corrosion and microstructural properties of Al6061-T6 alloy was investigated. The electrochemical properties were determined in chloride solution via corrosion tests and electrochemical impedance spectroscopy (EIS) technique at room temperature. The microstructural properties and corrosion mechanism after polarization were studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM)/Kelvin probe force microscopy (KPFM) techniques. From the corrosion tests and SEM-AFM/KPFM analysis, the multilayered polymer coated (using polyacrylic acid - PAA) Al6061-T6 alloy experienced a positive shift in the corrosion potential (-0.648 V), signifying a possible corrosion protection ability. With a charge transfer resistance of 2.506×10⁻⁶ Ω cm², and lesser corrosion products featured on the coated sample, the present work demonstrates that the deposition of multilayered polymer PAA coating can enhance the corrosion resistance of Al6061-T6 alloy.

Original language	English
Article number	133901
Number of pages	6
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	692
Early online date	4 Apr 2024
DOIs	https://doi.org/10.1016/j.colsurfa.2024.133901
Publication status	Published - 5 Jul 2024

Keywords

Al6061-T6 alloy
Coatings
Corrosion
Microstructures
Passivation

ASJC Scopus subject areas

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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10.1016/j.colsurfa.2024.133901Licence: Elsevier User Licence

Author accepted manuscriptAccepted author manuscript, 1.76 MBLicence: CC BY-NC-ND

Cite this

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title = "Influence of multilayered polymer coatings on the corrosion behaviour and microstructures of Al6061-T6 alloy",

abstract = "The influence of multilayered polymer coatings on the corrosion and microstructural properties of Al6061-T6 alloy was investigated. The electrochemical properties were determined in chloride solution via corrosion tests and electrochemical impedance spectroscopy (EIS) technique at room temperature. The microstructural properties and corrosion mechanism after polarization were studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM)/Kelvin probe force microscopy (KPFM) techniques. From the corrosion tests and SEM-AFM/KPFM analysis, the multilayered polymer coated (using polyacrylic acid - PAA) Al6061-T6 alloy experienced a positive shift in the corrosion potential (-0.648 V), signifying a possible corrosion protection ability. With a charge transfer resistance of 2.506{\texttimes}10−6 Ω cm2, and lesser corrosion products featured on the coated sample, the present work demonstrates that the deposition of multilayered polymer PAA coating can enhance the corrosion resistance of Al6061-T6 alloy.",

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author = "Olugbade, \{Temitope Olumide\}",

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doi = "10.1016/j.colsurfa.2024.133901",

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journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",

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T1 - Influence of multilayered polymer coatings on the corrosion behaviour and microstructures of Al6061-T6 alloy

AU - Olugbade, Temitope Olumide

PY - 2024/7/5

Y1 - 2024/7/5

N2 - The influence of multilayered polymer coatings on the corrosion and microstructural properties of Al6061-T6 alloy was investigated. The electrochemical properties were determined in chloride solution via corrosion tests and electrochemical impedance spectroscopy (EIS) technique at room temperature. The microstructural properties and corrosion mechanism after polarization were studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM)/Kelvin probe force microscopy (KPFM) techniques. From the corrosion tests and SEM-AFM/KPFM analysis, the multilayered polymer coated (using polyacrylic acid - PAA) Al6061-T6 alloy experienced a positive shift in the corrosion potential (-0.648 V), signifying a possible corrosion protection ability. With a charge transfer resistance of 2.506×10−6 Ω cm2, and lesser corrosion products featured on the coated sample, the present work demonstrates that the deposition of multilayered polymer PAA coating can enhance the corrosion resistance of Al6061-T6 alloy.

AB - The influence of multilayered polymer coatings on the corrosion and microstructural properties of Al6061-T6 alloy was investigated. The electrochemical properties were determined in chloride solution via corrosion tests and electrochemical impedance spectroscopy (EIS) technique at room temperature. The microstructural properties and corrosion mechanism after polarization were studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM)/Kelvin probe force microscopy (KPFM) techniques. From the corrosion tests and SEM-AFM/KPFM analysis, the multilayered polymer coated (using polyacrylic acid - PAA) Al6061-T6 alloy experienced a positive shift in the corrosion potential (-0.648 V), signifying a possible corrosion protection ability. With a charge transfer resistance of 2.506×10−6 Ω cm2, and lesser corrosion products featured on the coated sample, the present work demonstrates that the deposition of multilayered polymer PAA coating can enhance the corrosion resistance of Al6061-T6 alloy.

KW - Al6061-T6 alloy

KW - Coatings

KW - Corrosion

KW - Microstructures

KW - Passivation

U2 - 10.1016/j.colsurfa.2024.133901

DO - 10.1016/j.colsurfa.2024.133901

M3 - Article

AN - SCOPUS:85190503240

SN - 0927-7757

VL - 692

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

M1 - 133901

ER -

Influence of multilayered polymer coatings on the corrosion behaviour and microstructures of Al6061-T6 alloy

Abstract

Keywords

ASJC Scopus subject areas

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