Abstract
The elementally resolved dissolution kinetics of a Ni-Fe-Cr-Mn-Co multi-principal element alloy (MPEA) was investigated by in-situ atomic emission spectroelectrochemistry (AESEC) coupled to electrochemical impedance spectroscopy (EIS). Potentiostatic AESEC-EIS experiments were conducted at open circuit potential and a passive potential in 2 M H2SO4 solution. Elemental Lissajous plot enabled to determine the elemental Tafel slopes of each alloying element suggesting that the different elemental oxidation rate would lead to a duplex oxide formation during passivation. Elementally resolved dissolution rates in spontaneous dissolution (elemental corrosion rates) were estimated by Stern-Geary equation with elemental Tafel slopes and polarization resistance obtained from EIS. Acknowledgement: The research was primarily supported as part of the Center for Performance and Design of Nuclear Waste Forms and Containers (WastePD), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, under award #DE-SC0016584. K. Ogle and the AESEC experiments were supported by the Agence Nationale de Recherche, grant # ANR-20-CE08-0031 (Tapas 2020).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
