Journal
CORROSION SCIENCE
Volume 126, Issue -, Pages 142-151Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.06.024
Keywords
stainless steel; EIS; polarization; microbiological corrosion
Funding
- National Natural Science Foundation of China [U1660118, 51371182, 51501203]
- Shenzhen Science and Technology Research Funding [JCYJ20160608153641020]
- National Basic Research Program of China (973 Program) [2014CB643300]
- program of Outstanding Young Scholars
- Program of Hundred Talents of Chinese Academy of Sciences
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Different electrochemical techniques and surface analysis methods were used to continuously monitor the corrosion of 2205 duplex stainless steel (DSS) in P. aeruginosa inoculated medium. It was found that linear polarization resistance and electrochemical impedance spectroscopy, significantly inhibited the attachment and growth of the biofilm, due to an internal electric field, leading to lower corrosion rates. In comparison, electrochemical noise as a passive electrochemical measurement technique did not adversely impact the biofilm, and the corrosion rate and the largest pit depth distribution from electrochemical noise were the closest to those from weight-loss data, making it a more suitable technique to monitor MIC by fragile biofilms.
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