Influence of aluminium enrichment in the near-surface region of commercial twin-roll cast AZ31 alloys on their corrosion behaviour
The effect of increasing the Al concentration to a value between 0.5 and 0.8 wt.% within the 10-μm thick surface layer of a commercial AZ31 alloy sheet manufactured by twin-cast rolling method on its corrosion behaviour was investigated. In long term exposure, both the uniformity of the double layer...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión enviada para evaluación y publicación |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/172189 |
| Acceso en línea: | http://hdl.handle.net/10261/172189 |
| Access Level: | acceso abierto |
| Palabra clave: | XPS Passive films EIS SEM Magnesium |
| Sumario: | The effect of increasing the Al concentration to a value between 0.5 and 0.8 wt.% within the 10-μm thick surface layer of a commercial AZ31 alloy sheet manufactured by twin-cast rolling method on its corrosion behaviour was investigated. In long term exposure, both the uniformity of the double layered Mg-Al hydroxide (LDH) formed in the inner layer of the corrosion product on the aluminium-rich surface AZ31 specimen and the precipitation of a significant amount of aluminium hydroxide contributed to enhancing the corrosion resistance significantly. |
|---|