Impact of biofilm in the maturation process on the corrosion behavior of galvanized steel: long-term evaluation by EIS

被引：0

作者：

Tuba Unsal

Nurhan Cansever

Esra Ilhan-Sungur

机构：

[1] Istanbul University,Faculty of Science, Department of Biology

[2] Yildiz Technical University,Faculty of Chemistry

来源：

World Journal of Microbiology and Biotechnology | 2019年 / 35卷

关键词：

Galvanized steel; Biofilm; Corrosion; Electrochemical impedance spectroscopy (EIS);

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this study, the effect of biofilm in the maturation process on the corrosion behavior of galvanized steel was investigated in a model of a recirculating water system over 6 months. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization methods were used to determine the corrosion behavior of galvanized steel. The biofilm and corrosion products on the galvanized steel surfaces were investigated by using scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDS). EIS results showed that the structure of the biofilm changed during the maturation process over time and the altering structure of the biofilm affects the corrosion behavior of galvanized steel. Also, EIS analyses validated that the biofilm has a dynamic and complex structure. The data obtained from SEM and macroscopic images indicated that EIS is an effective method for monitoring the biofilm-development process.

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