Influence of Static Low Electromagnetic Field on Copper Corrosion in the Presence of Multispecies Aerobic Bacteria
| Autor: | Masoumeh Moradi, Zhenlun Song, Lijing Yang, Xiao-Yang Wei, Bizhang Zheng, Zhan-Peng Lu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
animal structures Materials science biology Aerobic bacteria Metals and Alloys Biofilm Artificial seawater chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences Copper Industrial and Manufacturing Engineering Corrosion Chemical engineering X-ray photoelectron spectroscopy chemistry 0103 physical sciences Erosion corrosion of copper water tubes 0210 nano-technology Bacteria |
| Zdroj: | Acta Metallurgica Sinica (English Letters). 32:1287-1297 |
| ISSN: | 2194-1289 1006-7191 |
| Popis: | The effects of low electromagnetic field (EMF) (B = 2 mT) on the corrosion of pure copper in the absence and presence of multispecies marine aerobic bacteria were investigated in this work. The results showed that EMF has an inhibitory effect on copper metals and decreases the corrosion rate of copper metals in sterile artificial seawater. However, microbiologically influenced corrosion of Cu was increased in the presence of electromagnetic field due to its effect on the biofilm morphology and structure. EMF reduced the growth rate of bacteria and decreased bacterial attachment, thereby forming a heterogeneous and non-stable biofilm on the Cu surface in the presence of EMF. Moreover, the biofilm was dispersed throughout the surface after 7 days, whereas the scattered bacteria were observed on the surface after 10 days. Confocal laser scanning microscopy images showed large and deep pits on the surface in the presence of EMF and confirmed the acceleration of Cu corrosion in the presence of EMF and multispecies bacteria. Furthermore, XPS and FTIR results demonstrated that the corrosion products and metabolic by-products were significantly changed in the presence of EMF. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink