This research aims to develop advanced electro-chemo-mechanical models to predict and mitigate corrosion in thin-walled structures across industries like aerospace, automotive, and marine. Complementing traditional experiment-based approaches, it focuses on capturing microstructural effects, welding processes, and corrosion-resistant coatings using phase-field modelling. The project addresses limitations such as high costs and incomplete representation of corrosion evolution, with objectives to simulate corrosion mechanisms, optimise coating designs, and improve material performance. These advancements will enhance structural integrity, reduce failure risks, and streamline the development of corrosion-resistant solutions in demanding environments.