Electrochemical Study of the AISI 409 Ferritic Stainless Steel: Passive Film Stability and Pitting Nucleation and Growth

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dc.citation.issue6
dc.citation.volume20
dc.contributor.authorde Souza, Juliana Sarango [UNIFESP]
dc.contributor.authorde Oliveira, Leandro Antonio
dc.contributor.authorSayeg, Isaac Jamil
dc.contributor.authorAntunes, Renato Altobelli
dc.coverageSao Carlos
dc.date.accessioned2020-09-01T13:21:27Z
dc.date.available2020-09-01T13:21:27Z
dc.date.issued2017
dc.description.abstractThe aim of the present work was to study the passive film stability and pitting corrosion behavior of the AISI 409 stainless steel. The electrochemical tests were carried out in 0.1 M NaCl solution at room temperature. The general electrochemical behavior was assessed using electrochemical impedance spectroscopy (EIS) measurements whereas the semiconducting properties of the passive film were evaluated by the Mott-Schottky approach. Pitting corrosion was investigated using potentiodynamic and potentiostatic polarization tests. Surface morphology was examined using confocal laser scanning microscopy and scanning electron microscopy (SEM). Energy dispersive X-ray spectroscopy (EDS) analyses were carried out to identify the composition of precipitates that could act as preferential sites for the onset of pitting corrosion. The results showed that the passive film presents n-type semiconductive behavior. Grain boundaries played an important role as pitting initiation sites for the AISI 409 stainless steel.en
dc.description.affiliationUniv Fed Sao Paulo UNIFESP, Dept Ciencias Exatas & Terra, BR-09910720 Diadema, SP, Brazil
dc.description.affiliationUniv Fed ABC UFABC, Ctr Engn Modelagem & Ciencias Sociais Aplicadas C, BR-09210580 Santo Andre, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Inst Geociencias, Rua Lago 562, BR-05508080 Sao Paulo, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo UNIFESP, Dept Ciencias Exatas & Terra, BR-09910720 Diadema, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipBrazilian agency CAPES
dc.format.extent1669-1680
dc.identifierhttp://dx.doi.org/10.1590/1980-5373-MR-2017-0204
dc.identifier.citationMaterials Research-Ibero-American Journal Of Materials. Sao Carlos, v. 20, n. 6, p. 1669-1680, 2017.
dc.identifier.doi10.1590/1980-5373-MR-2017-0204
dc.identifier.fileS1516-14392017000601669.pdf
dc.identifier.issn1516-1439
dc.identifier.scieloS1516-14392017000601669
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/58267
dc.identifier.wosWOS:000415103400026
dc.language.isoeng
dc.publisherUniv Fed Sao Carlos, Dept Engenharia Materials
dc.relation.ispartofMaterials Research-Ibero-American Journal Of Materials
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectstainless steelen
dc.subjectpitting corrosionen
dc.subjectpassive film stabilityen
dc.subjectAISI 409en
dc.titleElectrochemical Study of the AISI 409 Ferritic Stainless Steel: Passive Film Stability and Pitting Nucleation and Growthen
dc.typeinfo:eu-repo/semantics/article
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