Приказ основних података о документу

dc.creatorJeslina, V.
dc.creatorKirubavathy, S.J.
dc.creatorAl-Hashem, A.
dc.creatorRajendran, S.
dc.creatorLacnjevac, C.
dc.creatorJoany, R.M.
dc.date.accessioned2021-12-20T10:53:09Z
dc.date.available2021-12-20T10:53:09Z
dc.date.issued2021
dc.identifier.issn2305-6894
dc.identifier.urihttp://aspace.agrif.bg.ac.rs/handle/123456789/5991
dc.description.abstractThe inhibitive effect of an alcoholic extract of a seaweed, namely, Sargassum Muticum, in controlling corrosion of mild steel in 0.5 N HCl has been evaluated by weight loss method (immersion period 1 day) and electrochemical techniques such as polarization study and AC impedance spectra. The protective film has been investigated by AFM and Vickers Hardness test. Weight loss method reveals that 500 ppm of inhibitor offers 99% inhibition efficiency to mild steel immersed in 0.5 N HCl. The adsorption of inhibitor molecules on the metal surface follows Langmuir adsorption isotherm. The R2 value is very high, 0.998. Polarization study reveals that the corrosion potential is slightly shifted to anodic side. It is inferred that the inhibitor solution functions as mixed type corrosion inhibitor. In the presence of the inhibitor, the linear polarization resistance (LPR) increases and the corrosion current decreases. Because of the Blanket effect (formation of a protective film on the metal surface blocking the anodic sites and cathodic), electron transfer from the metal to the bulk of the solution is blocked. AC impedance spectra confirm the formation of a protective film on the metal surface. As the inhibitor concentration increases, the Rct value increases and the double layer capacitance (Cdl) decreases, the impedance increases and the phase angle increases due to the blocking effect on the metal surface. It is found to be a monolayer of protective film. The Vickers hardness of the inhibited metal surface is lower than that of polished metal but higher than that of corroded surface. The average roughness, RMS roughness and maximum peak-to-valley height of inhibited metal surface are lower than those of corroded metal surface but higher than those of polished metal surface. The outcome of the study may be used in pickling industry where HCl is used to remove rust and at the same time metal surface is protected.sr
dc.language.isoensr
dc.publisherRussian Association of Corrosion Engineerssr
dc.rightsrestrictedAccesssr
dc.sourceInternational Journal of Corrosion and Scale Inhibitionsr
dc.subjectAcid mediumsr
dc.subjectAdsorption isothermsr
dc.subjectAFMsr
dc.subjectCorrosion inhibitionsr
dc.subjectElectrochemical studiessr
dc.subjectGreen inhibitionsr
dc.subjectSargassum Muticumsr
dc.subjectVickers hardnesssr
dc.titleInhibitive effect of an alcoholic extract of a seaweed Sargassum Muticum in controlling corrosion of mild steel in 0.5 N HClsr
dc.typearticlesr
dc.rights.licenseARRsr
dc.citation.epage1473
dc.citation.issue4
dc.citation.spage1454
dc.citation.volume10
dc.identifier.doi10.17675/2305-6894-2021-10-4-6
dc.identifier.scopus2-s2.0-85120817954
dc.identifier.wos000740699200005
dc.type.versionpublishedVersionsr


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Приказ основних података о документу