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Ispitivanje prevlaka Zn-Co legura dobijenih pulsirajućom strujom

dc.creatorBajat, Jelena
dc.creatorMaksimović, Miodrag D.
dc.creatorTomić, Milorad V.
dc.creatorPavlović, Miomir
dc.date.accessioned2019-01-30T17:31:59Z
dc.date.available2019-01-30T17:31:59Z
dc.date.issued2012
dc.identifier.issn0367-598X
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/1077
dc.description.abstractThe electrochemical deposition by pulse current of Zn-Co alloy coatings on steel was examined, with the aim to find out whether pulse plating could produce alloys that could offer a better corrosion protection. The influence of on-time and the average current density on the cathodic current efficiency, coating morphology, surface roughness and corrosion stability in 3% NaCl was examined. At the same Ton/Toff ratio the current efficiency was insignificantly smaller for deposition at higher average current density. It was shown that, depending on the on-time, pulse plating could produce more homogenous alloy coatings with finer morphology, as compared to deposits obtained by direct current. The surface roughness was the greatest for Zn-Co alloy coatings deposited with direct current, as compared with alloy coatings deposited with pulse current, for both examined average current densities. It was also shown that Zn-Co alloy coatings deposited by pulse current could increase the corrosion stability of Zn-Co alloy coatings on steel. Namely, alloy coatings deposited with pulse current showed higher corrosion stability, as compared with alloy coatings deposited with direct current, for almost all examined cathodic times, Ton. Alloy coatings deposited at higher average current density showed greater corrosion stability as compared with coatings deposited by pulse current at smaller average current density. It was shown that deposits obtained with pulse current and cathodic time of 10 ms had the poorest corrosion stability, for both investigated average deposition current density. Among all investigated alloy coatings the highest corrosion stability was obtained for Zn-Co alloy coatings deposited with pulsed current at higher average current density (jav = 4 A dm-2).en
dc.description.abstractIspitivano je elektrohemijsko taloženje cink-kobalt legure pulsirajućom strujom na čeliku, a s ciljem dobijanja zaštitnih prevlaka sa povećanom korozionom stabilnošću. Prevlake legura su taložene pulsirajućim režimom sa različitim srednjim gustinama struje i pri različitom trajanju katodnog pulsa. Analiziran je uticaj ovih parametara na iskorišćenje struje prilikom elektrohemijskog taloženja na izgled prevlaka (snimanje elektronskim mikroskopom), hrapavost prevlaka i njihovu korozionu stabilnost u 3% NaCl (merenjem slobodnog korozionog potencijala u agensu korozije i snimanjem polarizacionih krivih). Pokazano je da u zavisnosti od vremena pulsa, prevlake taložene pulsirajućim režimom mogu da imaju bolju homogenost, sitnije aglomerate kristalnih zrna i manju hrapavost od onih taloženih pri istim uslovima, ali konstantnom gustinom struje. Veću korozionu stabilnost pokazale su prevlake legura taložene većom srednjom gustinom struje.sr
dc.publisherAssociation of Chemical Engineers of Serbia
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45019/RS//
dc.rightsopenAccess
dc.sourceHemijska industrija
dc.subjectzinc-cobalt alloysen
dc.subjectcoatingsen
dc.subjectelectrodepositionen
dc.subjectpulse currenten
dc.subjectcorrosion stabilityen
dc.subjectZn-Co leguresr
dc.subjectprevlakesr
dc.subjectelektrohemijsko taloženjesr
dc.subjectpulsirajuća strujasr
dc.subjectkorozionastabilnostsr
dc.titleThe study of Zn-Co alloy coatings electrochemically deposited by pulse currenten
dc.titleIspitivanje prevlaka Zn-Co legura dobijenih pulsirajućom strujomsr
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractБајат, Јелена Б.; Максимовић, Миодраг Д.; Томић, Милорад В.; Павловић, Миомир; Испитивање превлака Зн-Цо легура добијених пулсирајућом струјом; Испитивање превлака Зн-Цо легура добијених пулсирајућом струјом;
dc.citation.volume66
dc.citation.issue5
dc.citation.spage749
dc.citation.epage757
dc.citation.other66(5): 749-757
dc.citation.rankM23
dc.identifier.doi10.2298/HEMIND111215035B
dc.identifier.rcubConv_425
dc.identifier.fulltexthttp://cer.ihtm.bg.ac.rs//bitstream/id/7632/1075.pdf
dc.identifier.scopus2-s2.0-84869426300
dc.identifier.wos000314735800016
dc.type.versionpublishedVersion


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