4.7 Article

Predicting the effect of droplet geometry and size distribution on atmospheric corrosion

期刊

CORROSION SCIENCE
卷 202, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2022.110308

关键词

Atmospheric corrosion; Modelling; Size distribution; Droplet geometry; Droplet size distribution

资金

  1. Dutch government [T18016]

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A new approach is proposed to predict atmospheric corrosion considering different droplet size distributions and geometries. This method utilizes observed droplet size distributions and contact angles to predict corrosion. A finite element model is solved to obtain the current density as a function of droplet geometry, and the computed corrosion current densities are used to estimate material loss for different droplet size distributions and electrolyte configurations, revealing the extent of the impact of droplet size distribution on atmospheric corrosion.
A new approach is proposed to numerically predict and study atmospheric corrosion for ranging droplet size distributions and the influence of the droplet geometry. The proposed methodology allows for a corrosion prediction based on observed droplet size distributions and droplet contact angles. A mechanistic finite element model, including oxygen transport and Butler-Volmer kinetics, is solved in order to obtain the current density as a function of the droplet geometry. This is done for a range of both droplet radii and contact angles. The computed corrosion current densities are then used as input for imposed droplet size distributions. This allows for a calculated material loss estimation for different distributions and electrolyte configurations and shows the extent of the impact of the droplet size distribution on atmospheric corrosion.

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