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Corrosion and self-healing behaviour of AZ91D magnesium alloy in ethylene glycol/water solutions / L. Wang in Materials and corrosion, Vol. 63 N° 8 (Août 2012) 

Public ISBD [article]  in Materials and corrosion > Vol. 63 N° 8 (Août 2012) . - pp. 713–719 Titre : Corrosion and self-healing behaviour of AZ91D magnesium alloy in ethylene glycol/water solutions Type de document : texte imprimé Auteurs : L. Wang, Auteur ; T. Zhou, Auteur ; J. Liang, Auteur Année de publication : 2013 Article en page(s) : pp. 713–719 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : AZ91D  magnesium  alloys;  corrosion  behaviour;  ethylene  glycol;  self-healing  behaviour Résumé : Corrosion behaviour of magnesium alloy-based engine parts in cooling system is an urgent fundamental issue in automotive field where magnesium alloys are increasingly used. In the present work, the corrosion behaviour of AZ91D magnesium alloys in various ethylene glycol/water solutions was studied by electrochemical measurements and immersion tests at room temperature. The surfaces of the samples after immersion tests were examined using scanning electron microscope (SEM) and X-ray diffraction (XRD). The results showed that the corrosion rates of AZ91D magnesium alloys decreased with the increase of ethylene glycol concentration in ethylene glycol/water solutions and the corrosion process was dominated by pitting corrosion. A continuous protective film transferred from corrosion products was formed on the corroded surface after sufficient immersion duration in ethylene glycol/water solutions, which is able to heal the corrosion pits. The self-healing behaviour inhibited the further corrosion of AZ91D magnesium alloy. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201106131/abstract [article] Corrosion and self-healing behaviour of AZ91D magnesium alloy in ethylene glycol/water solutions [texte imprimé] / L. Wang, Auteur ; T. Zhou, Auteur ; J. Liang, Auteur . - 2013 . - pp. 713–719. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 63 N° 8 (Août 2012) . - pp. 713–719 Mots-clés : AZ91D  magnesium  alloys;  corrosion  behaviour;  ethylene  glycol;  self-healing  behaviour Résumé : Corrosion behaviour of magnesium alloy-based engine parts in cooling system is an urgent fundamental issue in automotive field where magnesium alloys are increasingly used. In the present work, the corrosion behaviour of AZ91D magnesium alloys in various ethylene glycol/water solutions was studied by electrochemical measurements and immersion tests at room temperature. The surfaces of the samples after immersion tests were examined using scanning electron microscope (SEM) and X-ray diffraction (XRD). The results showed that the corrosion rates of AZ91D magnesium alloys decreased with the increase of ethylene glycol concentration in ethylene glycol/water solutions and the corrosion process was dominated by pitting corrosion. A continuous protective film transferred from corrosion products was formed on the corroded surface after sufficient immersion duration in ethylene glycol/water solutions, which is able to heal the corrosion pits. The self-healing behaviour inhibited the further corrosion of AZ91D magnesium alloy. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201106131/abstract