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dc.contributor.authorYurt, Nurdan
dc.contributor.authorAvci, Recep
dc.contributor.authorLewandowski, Zbigniew
dc.contributor.authorSears, Joe
dc.identifier.citationYurt, N., R. Avci, Z. Lewandowski, and J. Sears, "Passive film chemistry on 316l stainless steel ennobled by biomineralized manganese," CORROSION 2002, Paper 02455:1-6 (2002).en_US
dc.description.abstractThe effect of ennoblement on chemistry of passive films on 316L stainless steel (SS) was quantified using surface-sensitive analytical techniques. Under well-defined laboratory conditions, SS coupons were ennobled to ~ +350Vsce by biofilms of manganese-oxidizing bacterium Leptothrix discophra SP-6. Ennobled coupons were analyzed by x-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectroscopy (TofSIMS). From the XPS depth profiles of Fe, Cr, O, Ni, C and Mn, we evaluated thickness of the passive layers before and after ennoblement, while the TofSIMS depth profiles were used to evaluate spatial distribution of Mn, Cr, Fe and Ni on the surface. Because the ennobled coupons were covered with biomineralized deposits, sputtering was used to remove these deposits under ultrahigh vacuum (UHV) conditions before probing the chemistry of the underlying passive layers. The main conclusion of the paper is that oxide layers on the ennobled coupons are significantly thinner that those on the pre-ennobled coupons, which may, hypothetically, contribute to their susceptibility to localized corrosion.en_US
dc.titlePassive film chemistry on 316l stainless steel ennobled by biomineralized manganeseen_US
mus.citation.journaltitleCORROSION 2002en_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentChemical Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US

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