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AuthorParangusan, Hemalatha
AuthorBhadra, Jolly
AuthorAl-Thani, Noora
Available date2024-07-10T07:56:51Z
Publication Date2021
Publication NameEmergent Materials
ResourceScopus
Identifierhttp://dx.doi.org/10.1007/s42247-021-00194-6
ISSN25225731
URIhttp://hdl.handle.net/10576/56562
AbstractMetals, including austenitic steels and alloys, have been extensively applied in industrial and engineering applications. Passive films on metal surfaces are very important for corrosion protection. However, localized attack, such as passive film breakdown and the initiation of pits, is found upon exposure of such metals to aggressive ion-containing environments, leading to material failure and prominent adverse economic and safety concerns. For several decades, the mechanism of passivity breakdown and pit nucleation during pitting corrosion has been widely studied. The present article provides a detailed review of passive film breakdown on metal surfaces and the effects of complicated conditions, such as chloride- and sulfide-ion concentrations, temperature, and solution pH, on passivity breakdown. The possible mechanism for passivity breakdown is reviewed and discussed. The composition, structure, and electronic properties of passive layers are of conclusive importance to understand the leading corrosion mechanism, and they have been investigated with different techniques. Furthermore, we aim to present the structure, chemical composition, and electronic properties of passive films on metal surfaces by using X-ray photoelectron spectroscopy and energy-dispersive spectroscopy. Additionally, the surface morphology of passive films is analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM) techniques. Finally, the effect of chloride- and sulfide-ion concentrations, pH, and temperature on passivity breakdown is discussed in detail.
SponsorOpen access funding provided by the Qatar National Library. This publication was made possible by NPRP 12S-0203-190038 from Qatar National Research Fund (a member of Qatar Foundation).
Languageen
PublisherSpringer Nature
SubjectChloride-ion concentration
Passivity breakdown
pH
Sulfide-ion concentration
Temperature
TitleA review of passivity breakdown on metal surfaces: influence of chloride- and sulfide-ion concentrations, temperature, and pH
TypeArticle Review
Pagination1187-1203
Issue Number5
Volume Number4
dc.accessType Open Access


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