| Titre : | Effect of alternating voltage treatment on corrosion resistance of AZ91D magnesium alloy (2012) |
| Auteurs : | X. Liu, Auteur ; T. Zhang, Auteur ; Y. Shao, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Materials and corrosion (Vol. 63 N° 6, Juin 2012) |
| Article en page(s) : | pp. 505–516 |
| Note générale : | Génie mécanique |
| Langues : | Anglais |
| Tags : | Corrosion ; electrochemical techniques ; magnesium alloy ; surface ; XPS |
| Résumé : | AZ91D magnesium alloy was treated by the alternating voltage (AV) treatment technique. The optimal AV-treatment parameters of the alloy were determined by orthogonal experiments. Polarization curve, electrochemical impedance spectroscopy (EIS), and scanning electrochemical microscopy (SECM) were used to understand the effect of AV-treatment on the corrosion resistance of the alloy. AFM, contact angle, and XPS were employed to investigate further the influence of AV-treatment on the properties of the surface film formed on the alloy after AV-treatment. The results showed that a uniform and stable film was formed and the corrosion resistance of AZ91D magnesium alloy was significantly improved after AV-treatment. This was caused by the noticeable change of the chemical structure and semi-conducting properties of the surface film after AV-treatment. |
| En ligne : | http://onlinelibrary.wiley.com/doi/10.1002/maco.201005999/abstract |
