Study of passive films formed on AISI 316L stainless steel in non-polluted and underwater-volcano-polluted seawater

R. M. Fernández-Domene, R. Sánchez-Tovar, C. Escrivà-Cerdán, R. Leiva-García, J. García-Antón

Research output: Contribution to journalArticlepeer-review

Abstract

This work studies the semiconducting behavior of passive films formed on AISI 316L (UNS S31603) in two different seawater solutions, non-polluted and polluted, collected from the volcano of El Hierro Island. Polarization measurements, potentiostatic passivation tests, electrochemical impedance spectroscopy, and capacitance measurements were performed. Results show that the polluted seawater worsens passivation kinetics. Additionally, passive films formed on AISI 316L stainless steel in polluted seawater have been found to be less protective than those formed in non-polluted seawater, showing a more defective structure, owing to the acidity of the polluted medium.

Original languageEnglish
Pages (from-to)390-401
Number of pages12
JournalCorrosion
Volume70
Issue number4
DOIs
Publication statusPublished - Apr 2014

Keywords

  • AISI 316L stainless steel
  • Electrochemical impedance spectroscopy
  • Mott-Schottky analysis
  • Passive films
  • Volcanic eruption

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