Influence of convection during droplet evaporation on corrosion product distribution in CFRP-AA2024 galvanic couple: Modeling and experimental approaches

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Corrosion Science Pub Date : 2024-09-20 DOI:10.1016/j.corsci.2024.112462

L. Guerra-Camacho , A. Ruiz-Garcia , F.A. Godínez , J. Genesca , H. Terryn , R. Montoya

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Abstract

This work aims to clarify the impact of convection, generated within an electrolyte droplet during evaporation, on the distribution of

Al {(OH)}_{3}

in the CFRP-AA2024 system. Both Finite Element and experimental approaches were employed to determine whether convection is significant or negligible. By coupling the Navier–Stokes and Nernst–Planck equations with appropriate geometric and boundary conditions, the transient distribution of corrosion products was numerically tracked. The results showed that

Al {(OH)}_{3}

preferentially deposits on the CFRP surface, a pattern absent when convection is excluded. Experiments confirmed that internal convective currents can transport the

Al {(OH)}_{3}

compound, aligning with the numerical predictions.

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液滴蒸发过程中的对流对 CFRP-AA2024 电偶中腐蚀产物分布的影响：建模和实验方法

这项研究旨在阐明电解质液滴在蒸发过程中产生的对流对 CFRP-AA2024 系统中 Al(OH)3 分布的影响。我们采用了有限元方法和实验方法来确定对流是显著还是可忽略不计。通过将 Navier-Stokes 和 Nernst-Planck 方程与适当的几何和边界条件相耦合，对腐蚀产物的瞬态分布进行了数值跟踪。结果表明，Al(OH)3 会优先沉积在 CFRP 表面，而在排除对流的情况下则不会出现这种情况。实验证实，内部对流可以传输 Al(OH)3 复合物，这与数值预测结果一致。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.