Electrochemical behaviour of 22MnB5 steel coated with hot-dip Al-Si before and after hot-stamping process investigated by means of scanning Kelvin probe microscopy
| Autor: | Jesualdo Luiz Rossi, C.P. Couto, Herman Terryn, Iris De Graeve, Isolda Costa, Reynier I. Revilla, Zehbour Panossian, Marco Antonio Colosio |
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| Přispěvatelé: | Faculty of Engineering, Materials and Chemistry, In-Situ Electrochemistry combined with nano & micro surface Characterization, Architectural Engineering, Electrochemical and Surface Engineering, Materials and Surface Science & Engineering |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Hot-dip Al-Si
Materials science Chemistry(all) Scanning electron microscope 020209 energy General Chemical Engineering 02 engineering and technology Hot stamping engineering.material hot stamping Galvanic coupling Cathodic protection Corrosion Coating Materials Science(all) 0202 electrical engineering electronic engineering information engineering General Materials Science Composite material General Chemistry 021001 nanoscience & nanotechnology Anode Electrochemical behaviour Surface coating SKPFM engineering Hardening (metallurgy) Chemical Engineering(all) 0210 nano-technology |
| DOI: | 10.1016/j.corsci.2020.108811 |
| Popis: | Press-hardened steels are commonly protected with hot-dip Al-Si coating. Due to the electrochemical complexity of this system, either before or after hot-stamping process, SKPFM was used to investigate the influence of the thermo-mechanical process on the electrochemical behaviour of the galvanic coupling. The hot-stamping process changed significantly the anodic/cathodic coupling of the coating/steel due to iron enrichment in the coating layer. Hence, a concurrent mechanism was thoroughly established, i.e., while the press hardening enhances the corrosion properties of the steel system (steel and metallic coating) through diffusion, at the same time it diminishes the cathodic protection of the Al-Si layer. |
| Databáze: | OpenAIRE |
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