4.7 Article

Investigation of the importance of heat transfer during thin electrolyte formation in atmospheric corrosion using a novel experimental approach

Journal

CORROSION SCIENCE
Volume 189, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109542

Keywords

Thin electrolyte; Thickness measurement; Atmospheric corrosion; Modeling; Filmwise condensation; Evaporation; Heat transfer

Funding

  1. European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant [764977]

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During atmospheric corrosion of metals, the evolution of thin-film electrolyte thickness plays a crucial role in determining the corrosion rate. A novel methodology has been developed to measure and understand this evolution, with emphasis on the heat transfer coefficient influencing film characteristics and corrosion rate.
During atmospheric corrosion of metals, the evolution of thin-film electrolyte thickness is the primary factor that determines corrosion rate. Understanding the evolution of the electrolyte thickness as a function of the key environmental parameters is yet to be achieved. Therefore, in the present article, a novel methodology has been developed to conduct experiments under regulated environment to measure the evolution of the film thickness on an undisturbed metal surface using an interferometer. Experimental results are compared with the previously developed simulation model. The heat transfer coefficient is noted as a critical parameter influencing the film characteristics and resulting corrosion rate.

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