About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Advances in Surface Engineering VII
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Presentation Title |
Role of Current Density on the Tribological and Electrochemical Properties of Zn-Co Coatings Deposited from a Non-Aqueous-Based Electrolyte |
Author(s) |
Anjali Kumari, Bangmaya Satpathy, Panakati Siva Prasad, Juan David Matallana Guerrero, Siddhartha Das, Karabi Das |
On-Site Speaker (Planned) |
Anjali Kumari |
Abstract Scope |
In the present study, Zn-Co alloy coatings are electrodeposited from ChCl-EG-based non-aqueous electrolytes to study their electrochemical and tribological properties. The coatings are deposited on mild steel substrates at three different current densities (50, 70, and 90 mA/cm2), using the pulse galvanostatic route. Electrochemical impedance spectroscopy (EIS) studies of the bath demonstrate the reduction mechanism and metal complex interactions during electrodeposition. X-ray diffraction, Rietveld refinement, SEM, and AFM analysis reveal variation of Co2Zn11 and CoZn13 intermetallic phases, coating morphology, and roughness with change in current density. The nano-indentation and wear tests show maximum hardness and minimum volumetric loss for the coating deposited at 50mA/cm2. The potentiodynamic polarization studies reveal that coatings deposited at 50 mA/cm2 display a corrosion current density and polarization resistance values of 39.6 ±1.71μA/cm2 and 639.94 ±38.26 Ω, respectively. The XPS analysis of the corroded samples confirm the presence of ZnOH, ZnO, and ZnCl2 as corrosion products. |
Proceedings Inclusion? |
Planned: |
Keywords |
Surface Modification and Coatings, Characterization, |