Predicting the effect of droplet geometry and size distribution on atmospheric corrosion
N. Van den Steen (Vrije Universiteit Brussel)
Y. Gonzalez-Garcia (TU Delft - Team Yaiza Gonzalez Garcia)
JMC Mol (TU Delft - Team Arjan Mol)
H.A. Terryn (Vrije Universiteit Brussel)
Y. Van Ingelgem (Vrije Universiteit Brussel)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
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.