About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cutting-Edge Characterization and Electrochemical Techniques for Unraveling Corrosion Phenomena
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| Presentation Title |
Non-Destructive Characterization of Metal-Coating Interface Revealing Corrosion Beneath the Coating |
| Author(s) |
Zhiqiang Wang, Marshall S. Yang, Mark D. Aloisio, Justin Lomax, Paul Ragogna, Arjan Mol, Cathleen M. Crudden, Yolanda Susanne Hedberg |
| On-Site Speaker (Planned) |
Yolanda Susanne Hedberg |
| Abstract Scope |
Approximately 3.4% of the global gross domestic product is lost annually due to metal corrosion, which is primarily mitigated by coating techniques. Even with coating protection, metal corrosion will eventually take place at the metal-coating interface due to diffusion of moisture, oxygen or hydrogen. However, it is challenging to quantitatively and qualitatively probe the interface of a metal substrate and topcoat under an intact non-transparent coating. Here, we utilized three complementary non-destructive techniques, X-ray absorption spectroscopy/X-ray fluorescence mapping, high-voltage electrochemical impedance spectroscopy, and scanning Kelvin probe, to probe this interface and the heterogeneity of the extent of corrosion between the metal and the intact topcoat. These non-destructive testing methods provide essential information to understand the corrosion mechanism underneath an intact non-transparent coating and are necessary to develop the next-generation leading coating technology. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Surface Modification and Coatings, Iron and Steel |