Surface chemistry and semiconducting properties of passive film and corrosion resistance of annealed surgical stainless steel

dc.creatorOLIVEIRA, RODRIGO K. de
dc.creatorCORREA, OLANDIR V.
dc.creatorOLIVEIRA, MARA C.L. de
dc.creatorANTUNES, RENATO A.
dc.date2020
dc.date2020-12-09T17:58:59Z
dc.date2020-12-09T17:58:59Z
dc.date.accessioned2023-09-28T14:17:05Z
dc.date.available2023-09-28T14:17:05Z
dc.identifier1059-9495
dc.identifierhttp://200.136.52.105/handle/123456789/31617
dc.identifier9
dc.identifier29
dc.identifier10.1007/s11665-020-05067-3
dc.identifier22.37
dc.identifier54.00
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9001840
dc.descriptionASTM F-139 surgical stainless steel was subjected to annealing treatments at 700 ??C for different times. The effect of annealing on the chemical composition of the passive film was evaluated by x-ray photoelectron spectroscopy. The correlation of the surface chemistry with the corrosion behavior and semiconducting properties of the passive film was also investigated. Potentiodynamic polarization tests were conducted in phosphate-buffered solution at 37??C. The semiconducting character of the passive film was assessed by the Mott???Schottky approach. The microstructure of the annealed samples was characterized by optical microscopy. The grain size increased after annealing, but the differences between each annealing condition were not significant and could not be associated with the corrosion behavior of the annealed samples. The corrosion resistance was improved depending on the heat treatment condition due to compositional changes of the passive film upon annealing. The best corrosion properties were observed after annealing for 8 h which was ascribed to Cr2O3, MoO3 and FeO enrichment in the passive film.
dc.format6085-6100
dc.relationJournal of Materials Engineering and Performance
dc.rightsopenAccess
dc.subjectannealing
dc.subjectheat treatments
dc.subjectcorrosion
dc.subjectschottky barrier diodes
dc.subjectsurfaces
dc.subjectchemistry
dc.subjectaustenitic steels
dc.subjectstainless steels
dc.subjectsurfaces
dc.subjectchemistry
dc.subjectmicrostructure
dc.titleSurface chemistry and semiconducting properties of passive film and corrosion resistance of annealed surgical stainless steel
dc.typeArtigo de peri??dico
dc.coverageI


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