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Mikrostruktura i koroziono ponašanje Zn-Co legura taloženih iz sulfatnog i hloridnih rastvora

dc.creatorBajat, Jelena
dc.creatorStevanović, Sanja
dc.creatorJokić, Bojan
dc.date.accessioned2019-01-30T17:27:34Z
dc.date.available2019-01-30T17:27:34Z
dc.date.issued2011
dc.identifier.issn0352-5139
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/869
dc.description.abstractThe effects of plating baths of different composition on the micro- structure and corrosion stability of Zn-Co alloy coatings were studied. Zn-Co alloys with the same Co content were deposited from chloride plating baths containing different amounts of Co2+, as well as from a sulphate-chloride plating bath. The surface morphology and crystallite size were investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The corrosion stability of the Zn-Co alloys was determined by following the change of the open circuit potential with time of immersion in a 3 % NaCl solution and by polarization measurements. The results showed a significant influence of the plating bath on the morphology and corrosion stability of the Zn-Co alloys. The surface of the alloy coatings deposited from the chloride baths were uniform and homogenous, whereas the deposit obtained from the sulphate-chloride bath was quite inhomogeneous. The corrosion stability of the homogenous Zn-Co deposits obtained by deposition from both chloride baths was higher than that of the deposit obtained from the sulphate-chloride bath. An increase in the Co content in the chloride-plating bath resulted in a reduction of the alloy crystallite size and it was shown that the alloy with the smaller crystallites of the two alloy deposits, although having the same chemical content, exhibited a lower corrosion rate.en
dc.description.abstractU ovom radu je proučavan uticaj vrste rastvora za taloženje na mikrostrukturu i korozionu stabilnost prevlaka Zn-Co legura. Zn-Co legure sa istim sadržajem Co su elektrohemijski taložene iz hloridnih rastvora sa različitim sadržajem jona kobalta, kao i iz sulfatno-hloridnog rastvora. Morfologija površine prevlaka je ispitivana skenirajućom elektronskom mikroskopijom i mikroskopijom atomskih sila. Koroziona stabilnost prevlaka Zn-Co legura je određivana praćenjem promene potencijala otvorenog kola sa vremenom delovanja rastvora NaCl koncentracije 3%, kao i polarizacionim merenjima. Dobijeni rezultati su pokazali značajan uticaj vrste rastvora za taloženje na morfologiju i korozionu stabilnost prevlaka Zn-Co legura. Prevlake Zn-Co legura dobijene iz hloridnih rastvora su homogene, dok su prevlake dobijene iz sulfatno-hloridnog rastvora nehomogene. Koroziona stabilnost prevlaka legura dobijenih iz oba hloridna rastvora je veća u odnosu na stabilnost legura dobijenih iz sulfatno-hloridnog rastvora. Povećanjem sadržaja kobalta u hloridnom rastvoru za taloženje dobijaju se prevlake manjih kristalita i u radu je pokazano kako veličina kristalita utiče na korozionu stabilnost legura sa istim sadržajem kobalta.sr
dc.publisherSerbian Chemical Society
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45019/RS//
dc.rightsopenAccess
dc.sourceJournal of the Serbian Chemical Society
dc.subjectelectrodepositionen
dc.subjectcoatingsen
dc.subjectZn-Co alloyen
dc.subjectcorrosionen
dc.subjectAFMen
dc.titleMicrostructure and corrosion behaviour of Zn-Co alloys deposited from three different plating bathsen
dc.titleMikrostruktura i koroziono ponašanje Zn-Co legura taloženih iz sulfatnog i hloridnih rastvorasr
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractЈокић, Бојан М.; Бајат, Јелена Б.; Стевановић, Сања; Микроструктура и корозионо понашање Зн-Цо легура таложених из сулфатног и хлоридних раствора; Микроструктура и корозионо понашање Зн-Цо легура таложених из сулфатног и хлоридних раствора;
dc.citation.volume76
dc.citation.issue11
dc.citation.spage1537
dc.citation.epage1550
dc.citation.other76(11): 1537-1550
dc.citation.rankM23
dc.identifier.doi10.2298/JSC110331137B
dc.identifier.rcubConv_302
dc.identifier.fulltexthttp://cer.ihtm.bg.ac.rs//bitstream/id/9459/867.pdf
dc.identifier.scopus2-s2.0-80055000843
dc.identifier.wos000297886800009
dc.type.versionpublishedVersion


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