Electrochemical corrosion of multiphase stainless steel-based alloy nuclear waste forms

Vineeth Kumar Gattu, William L. Ebert, J. E. Indacochea, Terry A. Cruse, Jeffrey A. Fortner

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The electrochemical corrosion behaviors of two multiphase alloys representing waste forms made with 316 L stainless steel and different amounts of surrogate metallic fuel wastes were measured and related to the microstructures. Potentiodynamic (PD) scans were performed in an acid brine solution and the corroded surfaces were characterized with scanning electron microscopy (SEM) to compare the electrochemical responses to the corrosion of specific phases. PD scans for the two multiphase alloys, 316 L stainless steel, and pure palladium were compared to understand the complex corrosion behavior of these multiphase alloys also recently classified as multi principle element alloys (MPEAs) and to determine the effects of alloying elements and noble metals present in constituent phases on the corrosion behavior.

Original languageEnglish
Article number14
Journalnpj Materials Degradation
Volume6
Issue number1
DOIs
StatePublished - Dec 2022
Externally publishedYes

Funding

This work was conducted under the auspices of the U.S. DOE Office of Nuclear Energy Nuclear Technology Research and Development program. Work at Argonne National Laboratory is supported by the U.S. Department of Energy under contact DE-AC02–06CH11357. Authors acknowledge Steve M. Frank (Ret.), Nuclear Science and Technology Division, Idaho National Laboratory Idaho National Laboratory for providing the RAW alloys. This work was conducted under the auspices of the U.S. DOE Office of Nuclear Energy Nuclear Technology Research and Development program. Work at Argonne National Laboratory is supported by the U.S. Department of Energy under contact DE-AC02–06CH11357. Authors acknowledge Steve M. Frank (Ret.), Nuclear Science and Technology Division, Idaho National Laboratory Idaho National Laboratory for providing the RAW alloys.

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