Electrochemical studies on the interfaces of freshwater biofilm/oxide film of alloy steels

The present research focused on the interaction between oxide films of different alloys in presence of freshwater biofilm. The electrochemical behavior of freshwater biofilm/oxide films of alloys were investigated using the open circuit potential measurements, cathodic polarization, electrochemical...

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Bibliographic Details
Published in:Vacuum 2022-02, Vol.196, p.110751, Article 110751
Main Authors: Dharmarajan, Sridharan, Chandrasekaran, Karthikeyan, Sundaram, Maruthamuthu, Narayanan, Palaniswamy
Format: Article
Language:English
Subjects:
Biofilm
Freshwater
Interfaces
Oxide film
Redox
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Summary:The present research focused on the interaction between oxide films of different alloys in presence of freshwater biofilm. The electrochemical behavior of freshwater biofilm/oxide films of alloys were investigated using the open circuit potential measurements, cathodic polarization, electrochemical impedance spectroscopy, and cyclic voltammetry studies. The cyclic voltammetry studies shows that biofilm on the 316L SS was entirely different from other alloys due to their oxidation peak and reduction peak which identified at +0.24 V and 0 V vs SCE respectively. The present study revealed that the nature of oxide films was responsible for the electrochemical behavior of biofilms on the alloy steels. •Electrochemical behavior of biofilm on the oxide films of different alloys were investigated.•Biofilm covered 316L SS, alloy C276 and Nickel 200 shows potential shift towards positive side.•Biofilm covered 316L SS reveals a redox behaviour of biogenic MnOx and peroxide.
ISSN:0042-207X
1879-2715
DOI:10.1016/j.vacuum.2021.110751