About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Surface Engineering V
|
Presentation Title |
Bio-inspired Materials as Protective Coatings for Corrosion Prevention |
Author(s) |
Pawan Sigdel, Venkata A.S. Kandadai, Jawaharraj Kalimuthu, Bharat Jasthi, Venkataramana Gadhamshetty |
On-Site Speaker (Planned) |
Pawan Sigdel |
Abstract Scope |
Microbiologically influenced corrosion (MIC) compromises the integrity of many technologically relevant metals. The current use of synthetic material as protective coatings pose potential environmental impacts. Here, we report a MIC-resistant coating based on the biofilm matrix of Citrobacter freundii strain MIC21 on underlying copper (Cu) surfaces. A co-culture of Desulfovibrio alaskensis strain G20 and Citrobacter freundii strain MIC21 served as inocula and lactate-C media as electrolytes. Pure culture of C. freundii and D. alaskensis were used as control. The corrosion tests were carried out with Cu as working, graphite plate as counter, and Ag/AgCl as reference electrodes. Passivating effect of the biofilm matrix was observed in the form of an ennoblement effect. A compact biofilm matrix dominated by strain MIC21 based on sequencing, microscopy, and spectroscopy provided evidence for the passivation effect. This study entails a potential application of C. freundii strain MIC21 biofilm on metals for MIC mitigation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Biomaterials, Copper / Nickel / Cobalt, Surface Modification and Coatings |