Evaluation of the influence of dissolved nitrates on corrosion behaviour of ship structural steel exposed to seawater environment

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dc.contributor.authorAbbas, Muntazir
dc.contributor.authorRizvi, Syed Haider Mehdi
dc.contributor.authorSarfraz, Shoaib
dc.contributor.authorRaza, Asif
dc.contributor.authorKhan, Asif
dc.contributor.authorLoya, Adil
dc.contributor.authorNajib, Antash
dc.date.accessioned2024-03-11T12:31:07Z
dc.date.available2024-03-11T12:31:07Z
dc.date.issued2024-02-29
dc.description.abstractCorrosion rates in marine structural steels differ significantly with the varying compositions of seawater particularly near harbours or coastal regions primarily due to the presence of untreated chemically active species from various sources. The reviewed literature reports accelerated steel corrosion losses in coastal seawater exposure conditions, which has widely been attributed to the presence of aggressive chemical compounds e.g., dissolved inorganic nitrogenous (DINs) compounds, sulphur containing compounds, in combination with various other environmental factors and their interdependent complex relationships. This paper aims to investigate the influence of nitrates, a DIN compound, on the corrosion behaviour of a low carbon ship structural steel, by exposing surface the cleaned coupons to an artificial seawater solution in a controlled laboratory environment. The uniform and localised corrosion damages were measured on steel coupons by using the standard weight loss and the dimensional metrology methods. A significant increase in corrosion losses was observed on coupons exposed to the nitrate-added artificial seawater than those exposed to similar seawater compositions with no additional nitrate content. Elemental compositions of corrosion deposits and corrosion morphologies investigated using various analytical tools such as SEM, EDS and Raman scattering techniques have shown different types of corrosion products in both exposure conditions.en_UK
dc.identifier.citationAbbas M, Rizvi SHM, Sarfraz S, et al., (2024) Evaluation of the influence of dissolved nitrates on corrosion behaviour of ship structural steel exposed to seawater environment. Ocean Engineering, Volume 298, April 2024, Article Number 117268en_UK
dc.identifier.eissn1873-5258
dc.identifier.issn0029-8018
dc.identifier.urihttps://doi.org/10.1016/j.oceaneng.2024.117268
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20956
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectseawater corrosionen_UK
dc.subjectdimensional metrologyen_UK
dc.subjectartificial seawateren_UK
dc.subjectuniform/localised corrosion lossen_UK
dc.titleEvaluation of the influence of dissolved nitrates on corrosion behaviour of ship structural steel exposed to seawater environmenten_UK
dc.typeArticleen_UK
dcterms.dateAccepted2024-02-21

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