Steam assisted oxide growth on aluminium alloys using oxidative chemistries: Part II corrosion performance

Rameez Ud Din; Morten Stendahl Jellesen; Rajan Ambat

doi:10.1016/j.apsusc.2015.07.184

Steam assisted oxide growth on aluminium alloys using oxidative chemistries: Part II corrosion performance

Rameez Ud Din, Morten Stendahl Jellesen, Rajan Ambat

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Surface treatment of aluminium alloys using steam with oxidative chemistries, namely KMnO₄ and HNO₃resulted in accelerated growth of oxide on aluminium alloys. Detailed investigation of the corrosion performance of the treated surfaces was carried out using potentiodynamic polarisation and standard industrial test methods such as acetic acid salt spray (AASS) and filiform corrosion on commercial AA6060 alloy. Barrier properties of the film including adhesion were evaluated using tape test under wet and dry conditions. Electrochemical results showed reduced cathodic and anodic activity, while the protection provided by steam treatment with HNO3was a function of the concentration of NO₃⁻ions. The coating generated by inclusion of KMnO₄showed highest resistance to filiform corrosion. Overall, the performance of the steam treated surfaces under filiform corrosion and AASS test was a result of the local coverage of the alloy microstructure resulting from steam containing with KMnO₄and HNO₃.

Original language	English
Journal	Applied Surface Science
Volume	355
Pages (from-to)	716-725
ISSN	0169-4332
DOIs	https://doi.org/10.1016/j.apsusc.2015.07.184
Publication status	Published - 2015

Keywords

Aluminium alloys
Steam
Potentiodynamic polarization
Filiform corrosion
Acetic acid salt spray

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title = "Steam assisted oxide growth on aluminium alloys using oxidative chemistries: Part II corrosion performance",

abstract = "Surface treatment of aluminium alloys using steam with oxidative chemistries, namely KMnO4 and HNO3 resulted in accelerated growth of oxide on aluminium alloys. Detailed investigation of the corrosion performance of the treated surfaces was carried out using potentiodynamic polarisation and standard industrial test methods such as acetic acid salt spray (AASS) and filiform corrosion on commercial AA6060 alloy. Barrier properties of the film including adhesion were evaluated using tape test under wet and dry conditions. Electrochemical results showed reduced cathodic and anodic activity, while the protection provided by steam treatment with HNO3was a function of the concentration of NO3−ions. The coating generated by inclusion of KMnO4showed highest resistance to filiform corrosion. Overall, the performance of the steam treated surfaces under filiform corrosion and AASS test was a result of the local coverage of the alloy microstructure resulting from steam containing with KMnO4and HNO3.",

keywords = "Aluminium alloys, Steam, Potentiodynamic polarization, Filiform corrosion, Acetic acid salt spray",

author = "Din, {Rameez Ud} and Jellesen, {Morten Stendahl} and Rajan Ambat",

year = "2015",

doi = "10.1016/j.apsusc.2015.07.184",

language = "English",

volume = "355",

pages = "716--725",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier",

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TY - JOUR

T1 - Steam assisted oxide growth on aluminium alloys using oxidative chemistries: Part II corrosion performance

AU - Din, Rameez Ud

AU - Jellesen, Morten Stendahl

AU - Ambat, Rajan

PY - 2015

Y1 - 2015

N2 - Surface treatment of aluminium alloys using steam with oxidative chemistries, namely KMnO4 and HNO3 resulted in accelerated growth of oxide on aluminium alloys. Detailed investigation of the corrosion performance of the treated surfaces was carried out using potentiodynamic polarisation and standard industrial test methods such as acetic acid salt spray (AASS) and filiform corrosion on commercial AA6060 alloy. Barrier properties of the film including adhesion were evaluated using tape test under wet and dry conditions. Electrochemical results showed reduced cathodic and anodic activity, while the protection provided by steam treatment with HNO3was a function of the concentration of NO3−ions. The coating generated by inclusion of KMnO4showed highest resistance to filiform corrosion. Overall, the performance of the steam treated surfaces under filiform corrosion and AASS test was a result of the local coverage of the alloy microstructure resulting from steam containing with KMnO4and HNO3.

AB - Surface treatment of aluminium alloys using steam with oxidative chemistries, namely KMnO4 and HNO3 resulted in accelerated growth of oxide on aluminium alloys. Detailed investigation of the corrosion performance of the treated surfaces was carried out using potentiodynamic polarisation and standard industrial test methods such as acetic acid salt spray (AASS) and filiform corrosion on commercial AA6060 alloy. Barrier properties of the film including adhesion were evaluated using tape test under wet and dry conditions. Electrochemical results showed reduced cathodic and anodic activity, while the protection provided by steam treatment with HNO3was a function of the concentration of NO3−ions. The coating generated by inclusion of KMnO4showed highest resistance to filiform corrosion. Overall, the performance of the steam treated surfaces under filiform corrosion and AASS test was a result of the local coverage of the alloy microstructure resulting from steam containing with KMnO4and HNO3.

KW - Aluminium alloys

KW - Steam

KW - Potentiodynamic polarization

KW - Filiform corrosion

KW - Acetic acid salt spray

U2 - 10.1016/j.apsusc.2015.07.184

DO - 10.1016/j.apsusc.2015.07.184

M3 - Journal article

SN - 0169-4332

VL - 355

SP - 716

EP - 725

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Steam assisted oxide growth on aluminium alloys using oxidative chemistries: Part II corrosion performance

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