Evaluation of microbiologically influenced corrosion inhibition on Ni-Co alloy coatings by Aeromonas salmonicida and Clavibacter michiganensis


San N. O. , NAZIR H., Donmez G.

CORROSION SCIENCE, vol.65, pp.113-118, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 65
  • Publication Date: 2012
  • Doi Number: 10.1016/j.corsci.2012.08.009
  • Journal Name: CORROSION SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.113-118
  • Keywords: Alloy, Nickel, EIS, Microbiological corrosion, EXTRACELLULAR POLYMERIC SUBSTANCES, STEEL CORROSION, COPPER, NICKEL, ELECTRODEPOSITION, BIOFILMS, BEHAVIOR, RATES, WATER, IRON
  • Ankara Haci Bayram Veli University Affiliated: No

Abstract

Microorganisms are able to intensely change the electrochemical conditions at the metal/solution interface by forming biofilms. These changes can result in acceleration of corrosion to corrosion inhibition. In this study microbiologically influenced corrosion inhibition (MICI) has been observed for Ni-Co alloy coatings when two bacteria inoculated to the medium. Experiments were performed in sterile medium and using Aeromonas salmonicida and Clavibacter michiganensis bacteria. After the inoculation of the bacteria, a decrease detected at the E-corr and I-corr values. Highest inhibition efficiency (eta(p) and eta(i)) values were detected for C. michiganensis, as it caused a slower corrosion reaction. (C) 2012 Elsevier Ltd. All rights reserved.