Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5440204 | Corrosion Science | 2017 | 10 Pages |
Abstract
In this work, the corrosion behavior and mechanism of carbon steel induced by extracellular polymeric substances (EPS) extracted from an iron-oxidizing bacterium culture were studied using surface analysis and electrochemical measurements in 3.5 wt% NaCl solutions. Results of electrochemical measurements showed that 7 day-old EPS at 240 mg Lâ1 inhibited the corrosion of carbon steel, especially after the EPS solution was heat treated to deactivate the enzymes in the EPS. However, 7 day-old EPS at much higher and much lower concentrations accelerated corrosion. Furthermore, 14 day-old EPS and 28 day-old EPS at 240 mg Lâ1 also accelerated corrosion.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Hongwei Liu, Tingyue Gu, Muhammad Asif, Guoan Zhang, Hongfang Liu,