2018/04/23 by Anahita Imanian, Imanian, Anahita, Mehdi Amiri +1
Engineering · Materials Science · Physics and Astronomy · #Advanced Welding Techniques Analysis #Aluminum Alloy Microstructure Properties #Anodic Oxide Films and Nanostructures #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1804.08517
arxiv created 2018/04/23 · openalex publication_date 2018/04/23 · arxiv updated 2018/04/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A phase field (PF) based electrochemical model is presented for simulation of galvanic corrosion. Distributions of electrolyte potential and current density on anode and cathode surfaces are obtained by coupling the phase field variable with electrochemistry. Evolution of surface recession is naturally obtained by solving the phase field equations without tracking the evolving boundary. Numerical implementation involves solving the governing equations on a fixed mesh. The sharp interface as the limit of the PF model is shown by an asymptotic analysis. Two benchmark problems are discussed: a magnesium alloy-mild steel couple exposed to 5% NaCl solution and crevice corrosion for nickel in 1N sulfuric acid. A comparison is made considering available experimental data as well as other simulation data by an Arbitrary Lagrangian-Eulerian (ALE) method. A good agreement is obtained.