Probing corrosion using a simple and versatile in situ multimodal corrosion measurement system

Niverty, Sridhar; Kalsar, Rajib; Seffens, Rob J.; Guzman, Anthony D.; Roosendaal, Timothy J.; Strange, Lyndi E.; Joshi, Vineet V.

doi:10.1038/s41598-023-42249-0

Probing corrosion using a simple and versatile in situ multimodal corrosion measurement system

Journal Article · Wed Oct 04 00:00:00 EDT 2023 · Scientific Reports

DOI:https://doi.org/10.1038/s41598-023-42249-0· OSTI ID:2279033

Niverty, Sridhar ^[1]; Kalsar, Rajib ^[1]; Seffens, Rob J. ^[1]; Guzman, Anthony D. ^[1]; Roosendaal, Timothy J. ^[1]; ^[1]; ^[1]

Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

In this work, we have developed a unique in situ multimodal corrosion system that is capable of acquiring electrochemical data, sample imaging/visualization and hydrogen collection, simultaneously. Each of these modalities yield valuable information pertaining to the ongoing corrosion process. Combining them can yield holistic information on the role of microstructure, processing history, presence of coatings, etc., on the sequence of steps occurring during the corrosion process, and how they correlate with the acquired electrochemical data. Four materials systems, namely AA6061-T6 aluminum alloy, AZ91 magnesium alloy, galvanized DP590 steel, and pure Zn, were investigated under open circuit potential and under potentiodynamic polarization. The multimodal corrosion system was utilized to observe processes such as surface passivation and dissolution, pit and filiform corrosion initiation and propagation, and was correlated with location and magnitude of hydrogen evolution. This approach is shown to yield a truly multimodal understanding of the ongoing corrosion processes.

View Accepted Manuscript (DOE)

Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC05-76RL01830

OSTI ID:: 2279033

Report Number(s):: PNNL-SA--185203

Journal Information:: Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 13; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
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microstructure
polarization

Probing corrosion using a simple and versatile in situ multimodal corrosion measurement system

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