The corrosion behaviour of austenitic and duplex stainless steels in artificial saliva with the addition of fluoride |
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Authors: | Aleksandra Kocijan Darja Kek Merl Monika Jenko |
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Affiliation: | aInstitute of Metals and Technology, Lepi pot 11, 1000 Ljubljana, Slovenia;bJozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia |
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Abstract: | The evolution of the passive films on 2205 duplex stainless steel (2205 DSS) and AISI 316L stainless steel in artificial saliva, and with the addition of fluoride, was studied using electrochemical impedance spectroscopy (EIS) and potentiodynamic measurements. The extent of the passive range increased for the 2205 DSS compared to the AISI 316L in both solutions. The formation of the passive film was studied by EIS at the open-circuit potential (OCP). The passive layers were studied at the OCP by X-ray photoelectron spectroscopy (XPS). The passive films on both materials predominantly contained Cr-oxides, whereas the Fe species were markedly depleted. |
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Keywords: | A Stainless steel B XPS B Cyclic voltammetry B EIS C Passivity |
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