Influence of molybdenum on passivation of polarised stainless steels in a chloride environment |
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Authors: | J.M. Bastidas C.L. TorresE. Cano J.L. Polo |
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Affiliation: | National Centre for Metallurgical Research, CSIC, Avda. Gregorio del Amo 8, E-28040 Madrid, Spain |
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Abstract: | Polarised specimens of AISI 304L and 316L stainless steels (SS) were studied using X-ray photoelectron spectroscopy in conjunction with Ar+-ion sputtering. A 5% NaCl test solution was used at room temperature. The polarised passive films formed consist mainly of chromium oxide and hydroxide and a small proportion of iron oxides. The composition of the films depend strongly on the potential. Chloride and molybdenum ions appear when the AISI 316L SS alloy is polarised at a potential close to pitting potential. |
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Keywords: | Passive film Polarisation X-ray photoelectron spectroscopy Molybdenum |
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