Flash-PEO as an alternative to chromate conversion coatings for corrosion protection of Mg alloy
In the present work, a flash-PEO coating is developed on AZ31B alloy in a combination of silicate, phosphate, and fluoride based electrolyte in order to offer a green alternative to chromate conversion coatings. Multilevel active protection is achieved through synergetic combination of self-sealing...
| 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:20.500.14352/6873 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/6873 |
| Access Level: | acceso abierto |
| Palabra clave: | 66.0 620 Magnesium Coating Plasma electrolytic oxidation Flash-PEO Filiform corrosion Pitting corrosion Inhibitor Ingeniería química Materiales 3303 Ingeniería y Tecnología Químicas 3312 Tecnología de Materiales |
| Sumario: | In the present work, a flash-PEO coating is developed on AZ31B alloy in a combination of silicate, phosphate, and fluoride based electrolyte in order to offer a green alternative to chromate conversion coatings. Multilevel active protection is achieved through synergetic combination of self-sealing effect of PEO coating itself and active inhibition provided by an organic inhibitor impregnated in PEO pores in a post-treatment step. The results indicate that flash-PEO coatings, loaded with organic corrosion inhibitors, can be recommended for exploitation on industrial level as an equally effective corrosion protection system alternative to CCC for paint-bearing and paint-free applications. |
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