| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering II
|
| Presentation Title |
Pulse Potentiostatic Deposition of Fe-Zn based Intermetallic Coatings and Evaluation of its Catalytic Activity for Hydrogen Evolution Reaction |
| Author(s) |
Srija Biswas, Sourav Das, Sambedan Jena, Arijit Mitra, Siddhartha Das, Karabi Das |
| On-Site Speaker (Planned) |
Srija Biswas |
| Abstract Scope |
The current study explores a novel method to obtain Fe-Zn intermetallic coatings from an alkaline, pyrophosphate-based electrolyte, followed by exploration of its application as a catalyst for Hydrogen Evolution Reaction(HER). The deposited intermetallic exhibits appreciable adherence to the underlying copper substrate with superior surface finish. Pulse potentiostatic deposition procedure has been employed to obtain the intermetallic deposits under pulse conditions: (A) -1.3 to -1.8V and (B) -1.6 to -1.8V at ~52 Hz frequency. Linear Sweep Voltammetry(LSV) provides an insight into the reduction mechanism of Fe(2+) to Fe(0) and Zn(2+) to Zn(0) states. Electrochemical Impedance Spectroscopy(EIS) has been carried out to understand the behaviour of the electrolyte and metal-complex species during the electro-deposition process. X-ray Diffraction studies(XRD) and Rietveld refinement verify the formation of Fe-Zn intermetallics. The surface morphology, nano-hardness, scratch, and electrocatalytic properties of these intermetallic coatings have been evaluated. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |