Comparison of the effect of non-polluted and underwater-volcano-polluted seawater on the corrosion resistance of different stainless steels

This work compares the effect of non‐polluted and underwater‐volcano‐polluted seawater on the electrochemical behavior of two different alloys, notably an austenitic stainless steel (SS) and a duplex stainless steel. Polarization measurements, potentiostatic passivation tests, electrochemical impeda...

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Bibliographic Details
Published in:Materials and corrosion 2015-11, Vol.66 (11), p.1279-1289
Main Authors: Fernández-Domene, R. M., Sánchez-Tovar, R., Escrivá-Cerdán, C., Leiva-García, R., García-Antón, J.
Format: Article
Language:English
Subjects:
Alloys
Austenitic stainless steels
Corrosion
Corrosion resistance
EIS
Marine
Mott-Schottky analysis
Passivation
passive films
Polarization
Sea water
Seawater
Stainless steel
Steels
Volcanic eruption
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Summary:This work compares the effect of non‐polluted and underwater‐volcano‐polluted seawater on the electrochemical behavior of two different alloys, notably an austenitic stainless steel (SS) and a duplex stainless steel. Polarization measurements, potentiostatic passivation tests, electrochemical impedance spectroscopy and capacitance measurements were performed. Results show that the composition of the polluted seawater negatively affects the passivation kinetics of both AISI 316 SS and Alloy 900, decreasing the corrosion resistance of both alloys. Additionally, when both steels are compared, it can be concluded that passive films formed on Alloy 900 presented better protective properties than those on AISI 316 SS.
ISSN:0947-5117
1521-4176
DOI:10.1002/maco.201408172