PEO coating with Ce-sealing for corrosion protection of LPSO Mg-YZn alloy
Plasma Electrolytic Oxidation coatings (PEO), without and with Ce-based sealings, were developed on a Mg–Y–Zn alloy containing long period stacking order (LPSO) phases in order to improve its corrosion behaviour. Specimens were investigated in terms of morphology, composition and corrosion behaviour...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/107591 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/107591 |
| Access Level: | acceso abierto |
| Palabra clave: | 66 LPSOCe-based sealing Mg-Y-Zn magnesium alloy Plasma electrolytic oxidation Protective coating Corrosion Materiales 3312 Tecnología de Materiales 3303 Ingeniería y Tecnología Químicas |
| Sumario: | Plasma Electrolytic Oxidation coatings (PEO), without and with Ce-based sealings, were developed on a Mg–Y–Zn alloy containing long period stacking order (LPSO) phases in order to improve its corrosion behaviour. Specimens were investigated in terms of morphology, composition and corrosion behaviour (polarization and hydrogen evolution measurements). PEO improved the corrosion resistance compared to the bulk material. Sealing for 5 min plugged the coating pores and cracks with Ce-rich compounds, resulting in improved long-term corrosion behaviour. Sealing for 1 h resulted in excessive dissolution of the coating and deterioration of the inner barrier layer. |
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