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11 January 2023 Complexity at a humid interface: throwing light on atmospheric corrosion
Robert Lindsay, Michael Dowhyj, Kiran Kousar, Monika S Walczak, Robert Temperton, James N O'Shea
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Proceedings Volume 12337, Photoemission Spectroscopy for Materials Analysis II; 123370F (2023) https://doi.org/10.1117/12.2654964
Event: SPIE Photonex, 2022, Birmingham, United Kingdom
Abstract
Corrosion of metals arising from exposure to humid air is a pervasive problem. Frequently, it is hypothesised that this phenomenon arises once there is sufficient surface bound water to facilitate corrosion chemistry, but supporting evidence remains scarce. In this presentation, we deliver fresh insight through the application of near ambient pressure X-ray photoelectron spectroscopy and vibrational sum frequency spectroscopy. Data indicate that water sorption is more complex than expected, comprising absorption into a layer of adventitious carbon covering the metallic substrate, followed by nucleation as droplets. These results demonstrate that current models for atmospheric corrosion require considerable revision.
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Robert Lindsay, Michael Dowhyj, Kiran Kousar, Monika S Walczak, Robert Temperton, and James N O'Shea "Complexity at a humid interface: throwing light on atmospheric corrosion", Proc. SPIE 12337, Photoemission Spectroscopy for Materials Analysis II, 123370F (11 January 2023); https://doi.org/10.1117/12.2654964
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KEYWORDS
Corrosion
Atmospheric physics
Interfaces
Photoemission spectroscopy
Atmospheric modeling
Carbon
Humidity
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