Приказ основних података о документу

dc.creatorMišković-Stanković, Vesna B.
dc.creatorDražić, D. M.
dc.creatorKačarević-Popović, Zorica M.
dc.date.accessioned2018-03-01T18:16:00Z
dc.date.available2018-03-01T18:16:00Z
dc.date.issued1996
dc.identifier.issn0010-938X
dc.identifier.urihttps://vinar.vin.bg.ac.rs/handle/123456789/2018
dc.description.abstractOrganic protective coatings on steel were formed by cathodic electrodeposition of an epoxy resin modified by an amine and isocyanate using a constant voltage method (resin concentration 10% wt, temperature 26 degrees C, applied voltage 250 V). The corrosion behaviour of these coatings was investigated during exposure to different corrosive agents (H2O, 3% NaCl, 3% Na2SO4, 3% sodium salt of 2-naphthol-3,6 disulphonic acid) using a.c. impedance measurements, gravimetric liquid sorption experiments and differential scanning calorimetry (DSC), with the aim of explaining the mechanism of coating degradation. The time required to saturate the coating with pure water, obtained from the sorption data, coincides with the initial increase in coating capacitance and initial decrease in pore resistance, obtained from a.c. impedance measurements, denoting the entry of electrolyte into the coating. The first step of electrolyte penetration through the coating is related to water uptake, when molecules of pure water diffuse in the micropores of polymer net according to Ficks law and it is independent of type and dimensions of ions in the electrolyte. Similar values of enthalpy of vaporization of different volatile electrolytes and the quantity of water inside the coating, obtained from DSC measurements were in agreement with the proposed mechanism. From the calculated diffusion coefficient for coatings where external layers were mechanically removed, it can be concluded that the micropores of the polymer net are homogeneously distributed throughout the coating. Copyright (C) 1996 Elsevier Science Ltden
dc.rightsrestrictedAccessen
dc.sourceCorrosion Scienceen
dc.subjectmild steelen
dc.subjectEISen
dc.subjectpaint coatingsen
dc.titleThe sorption characteristics of epoxy coatings electrodeposited on steel during exposure to different corrosive agentsen
dc.typearticleen
dc.rights.licenseARR
dcterms.abstractДразиц, ДМ; Качаревић-Поповић Зорица М; МисковицСтанковиц, ВБ;
dc.citation.volume38
dc.citation.issue9
dc.citation.spage1513
dc.citation.epage1523
dc.identifier.wosA1996VP34300007
dc.identifier.doi10.1016/0010-938X(96)00042-X
dc.type.versionpublishedVersion
dc.identifier.scopus2-s2.0-0030237093


Документи

Thumbnail

Овај документ се појављује у следећим колекцијама

Приказ основних података о документу