| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties & Applications
|
| Presentation Title |
Corrosion Behaviour of Atomic Layers of Graphene on Nickel Surfaces Exposed to Aggressive Microbial Environments |
| Author(s) |
Ramesh Devadig, Md Hasan-Ur Rahman, Pawan Sigdel, Suvarna Talluri, Manoj Tripathi, Bharat Jasthi, Venkataramana Gadhamshetty |
| On-Site Speaker (Planned) |
Ramesh Devadig |
| Abstract Scope |
Despite significant choices for preventing the abiotic forms of corrosion effectively, there exists a lack of reliable protective coating for combating corrosion of metals exposed to aggressive microbial environments. Microbiologically influenced corrosion, a dangerous corrosion form has been reported to result in colossal monetary losses. Here we focus on developing protective coatings based on atomic layers of graphene using nickel as a technologically relevant metal and genetically tractable Desulfovibrio Alaskensis 20 as a model for sulphate reducing bacteria. Here we report an unusual behaviour of polycrystalline nickel surfaces modified with a single layer of graphene. We report that the nickel surfaces modified with graphene layer undergo an accelerated corrosion (12-fold higher) when compared to pristine form of nickel. We present a series of electrochemistry and microscopy tests to unveil this counterintuitive behaviour. We also present strategies to obtain rationally designed graphene coatings for effectively combating the MIC of nickel surfaces. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Copper / Nickel / Cobalt, Other |