About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Seeing is Believing -- Understanding Environmental Degradation and Mechanical Response Using Advanced Characterization Techniques: An SMD Symposium in Honor of Ian M. Robertson
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Presentation Title |
Zinc-Aluminum-Magnesium Coatings for Automotive Industry: Corrosion Analysis on Cross-sections via a New Scanning Electrochemical Microscopy Technique
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Author(s) |
Marilia Fernandes Bolsanello, Javier Izquierdo, Rejane Maria Pereira da Silva, Ricardo M. Souto , Jesualdo Luiz Rossi, Andrea Abreu |
On-Site Speaker (Planned) |
Marilia Fernandes Bolsanello |
Abstract Scope |
Corrosion-resistant coated steels are the stake of the automotive industry in the construction of smarter and more sustainable vehicles. In this field, Zinc-Aluminum-Magnesium coatings enhance zinc cathodic protection of galvanized steels and contribute to a self-repairing effect on scratches and at the cross-sectional area, a crucial region under corrosive agents. In the industrial process, coated sheets are cut and stamped, so the substrate is exposed to corrosive agents at the cut edges. A novel methodology for the spatially resolved measurements with Scanning Electrochemical Microscopy is presented, concerning coated materials during corrosion processes. A new layout for the electrochemical cell was designed, allowing the exposition of both the cross-section and the metal surfaces to the electrolyte. In this way, the access of the ultramicroelectrode tip to the cross-sectional surface is enabled, and so the identification of chemical species in localized corrosion processes with high spatial resolution. |
Proceedings Inclusion? |
Planned: |
Keywords |
Surface Modification and Coatings, Characterization, Aluminum |