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College of Engineering(공과대학)Dept. of Materials Science and Engineering(신소재공학과)MS-Journal Papers(저널논문)

Alloy design employing high Cr concentrations for Mo-free stainless steels with enhanced corrosion resistance

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dc.contributor.authorJung, Ki Minko
dc.contributor.authorAhn, Soohoonko
dc.contributor.authorKim, YoungJunko
dc.contributor.authorOh, Se-Kwonko
dc.contributor.authorRyu, Won-Heeko
dc.contributor.authorKwon, HyukSangko
dc.date.accessioned2018-08-20T08:07:01Z-
dc.date.available2018-08-20T08:07:01Z-
dc.date.created2018-08-13-
dc.date.created2018-08-13-
dc.date.issued2018-08-
dc.identifier.citationCORROSION SCIENCE, v.140, pp.61 - 72-
dc.identifier.issn0010-938X-
dc.identifier.urihttp://hdl.handle.net/10203/244954-
dc.description.abstractIn this study, we demonstrate the strategic replacement of Mo with excess Cr in Fe-Cr alloys and report their corrosion resistances. To better understand pitting corrosion, the electrochemical properties of the passive films observed on different alloys (Fe-20Cr-2Mo and Fe-25Cr) were compared. Mo-free Fe-25Cr offered comparable or better pitting corrosion resistance than Fe-20Cr-2Mo during film breakdown, repassivation, and pit propagation stages. We investigated the reason for enhanced stability against pitting corrosion as a result of Mo exclusion in such alloys. Mo accelerated co-dissolution of Fe and Mo itself, consequently enriching Cr on the surface and ultimately promoting onset of passivity.-
dc.languageEnglish-
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD-
dc.subjectNICKEL-BASE ALLOYS-
dc.subjectPASSIVE FILMS-
dc.subjectPITTING CORROSION-
dc.subjectCREVICE CORROSION-
dc.subjectCHLORIDE SOLUTIONS-
dc.subjectFE-CR-
dc.subjectREPASSIVATION KINETICS-
dc.subjectCHEMICAL-COMPOSITION-
dc.subjectELECTRONIC-STRUCTURE-
dc.subjectSULFIDE INCLUSIONS-
dc.titleAlloy design employing high Cr concentrations for Mo-free stainless steels with enhanced corrosion resistance-
dc.typeArticle-
dc.identifier.wosid000440121100007-
dc.identifier.scopusid2-s2.0-85048961926-
dc.type.rimsART-
dc.citation.volume140-
dc.citation.beginningpage61-
dc.citation.endingpage72-
dc.citation.publicationnameCORROSION SCIENCE-
dc.identifier.doi10.1016/j.corsci.2018.06.021-
dc.contributor.localauthorKwon, HyukSang-
dc.contributor.nonIdAuthorRyu, Won-Hee-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorStainless steel (A)-
dc.subject.keywordAuthorLocalised corrosion-
dc.subject.keywordAuthorRepassivation (C)-
dc.subject.keywordAuthorPassive films (C)-
dc.subject.keywordAuthorMolybdenum-
dc.subject.keywordAuthorPitting corrosion (C)-
dc.subject.keywordPlusNICKEL-BASE ALLOYS-
dc.subject.keywordPlusPASSIVE FILMS-
dc.subject.keywordPlusPITTING CORROSION-
dc.subject.keywordPlusCREVICE CORROSION-
dc.subject.keywordPlusCHLORIDE SOLUTIONS-
dc.subject.keywordPlusFE-CR-
dc.subject.keywordPlusREPASSIVATION KINETICS-
dc.subject.keywordPlusCHEMICAL-COMPOSITION-
dc.subject.keywordPlusELECTRONIC-STRUCTURE-
dc.subject.keywordPlusSULFIDE INCLUSIONS-
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