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Comparison of the effect of non‐polluted and underwater‐volcano‐polluted seawater on the corrosion resistance of different stainless steels
Author(s) -
FernándezDomene R. M.,
SánchezTovar R.,
EscriváCerdán C.,
LeivaGarcía R.,
GarcíaAntón J.
Publication year - 2015
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201408172
Subject(s) - passivation , seawater , corrosion , materials science , metallurgy , dielectric spectroscopy , alloy , underwater , artificial seawater , austenite , polarization (electrochemistry) , electrochemistry , electrode , composite material , microstructure , geology , chemistry , oceanography , layer (electronics)
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.