| About this Abstract |
| Meeting |
2019 TMS Annual Meeting & Exhibition
|
| Symposium
|
Coatings and Surface Engineering for Environmental Protection
|
| Presentation Title |
C-9: Study of Mechanisms of Cobalt Electrodeposition by Means of Potentiodynamic Polarization Curves |
| Author(s) |
Marli Ohba, Tatiana Scarazzato, Denise C R Espinosa, Jorge Alberto Soares Tenório, Zehbour Panossian |
| On-Site Speaker (Planned) |
Denise C R Espinosa |
| Abstract Scope |
The present work aims to contribute to a better understanding of the cobalt deposition onto cobalt and onto steel through a systematic study of experimental and theoretical potentiodynamic polarization curves. The occurrence of simultaneous reactions of reduction of hydrogen and oxygen was taken into account. The possibility of galvanic deposition was investigated. Experimental curves were constructed from tests using cobalt and steel working electrodes in electrochemical cells with electrolytes containing cobalt ions and boric acid. Theoretical curves were constructed based on the individual redox reactions for the considered system. For each of the reactions, the Butler-Volmer equation was analyzed, considering the occurrence of concentration polarization. By comparing the theoretical and experimental curves, a qualitative correlation between them could be established. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |