Oxidation mechanism of W substituted Mo-Si-B alloys

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dc.contributor.authorKarahan, Tuba
dc.contributor.authorOuyang, Gaoyuan
dc.contributor.authorRay, Pratik K.
dc.contributor.authorKramer, Matthew Joseph
dc.contributor.authorAkınç, Müfit
dc.date.accessioned2024-06-13T20:18:01Z
dc.date.available2024-06-13T20:18:01Z
dc.date.issued2017
dc.departmentFakülteler, Mühendislik Fakültesi, Metalurji ve Malzeme Mühendisliği Bölümü
dc.description.abstractThe oxidation mechanism of a Mo55W15Si15B15 alloy was established, and the effects of W content, oxidation temperature and microstructural length scale were determined. In addition to influencing the oxidation mechanism, the addition of W also destabilized the A15 phase which is consistent with our previous experiments in ternary Mo-W-Si alloys [1]. Microstructural investigation of the oxidized alloy revealed entrapped tungsten oxides at temperatures below 1300 degrees C, which volatilize above 1400-1500 degrees C. The presence of WO3 in the oxide scale interrupts the surface coverage by the glassy borosilicate, thereby adversely affecting the oxidation behavior. In order to determine the effects of length scale, the microstructural evolution during the transient oxidation of cast and sintered alloys, with different microstructural length scales, was studied at 1100 and 1400 degrees C. Finer microstructure promoted faster borosilicate surface coverage at 1400 degrees C.
dc.description.sponsorshipAFOSR HTAM [FA9550-11-1-201]
dc.identifier.doi10.1016/j.intermet.2017.04.005
dc.identifier.endpage44
dc.identifier.issn0966-9795
dc.identifier.issn1879-0216
dc.identifier.scopus2-s2.0-85017552837
dc.identifier.scopusqualityQ1
dc.identifier.startpage38
dc.identifier.urihttps://doi.org/10.1016/j.intermet.2017.04.005
dc.identifier.urihttps://hdl.handle.net/11501/1166
dc.identifier.volume87
dc.identifier.wosWOS:000401737400007
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorKarahan, Tuba
dc.institutionauthorid0000-0002-9896-649X
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofIntermetallics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectSilicide
dc.subjectTransient Oxidation
dc.subjectGlass
dc.subjectSilicate
dc.subjectMo-Si-B
dc.titleOxidation mechanism of W substituted Mo-Si-B alloys
dc.typeArticle

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