The role of the beta-Mg17Al12 phase on the anomalous hydrogen evolution and anodic dissolution of AZ magnesium alloys

•Anomalous HE observed for AZ31 and AZ91 Mg alloys.•Passivity exhibited by Mg17Al12 with anomalous HE originating at anodic regions.•Mg17Al12 phase exhibited lower HE rates than AZ Mg alloys during polarization.•Results consistent with anomalous HE originating at actively dissolving Mg sites.•Greate...

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Veröffentlicht in:	Corrosion science 2020-04, Vol.165, p.108384, Article 108384
Hauptverfasser:	Ubeda, C., Garces, G., Adeva, P., Llorente, I., Frankel, G.S., Fajardo, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anodic dissolution Anodic polarization Beta phase (Mg17Al12) Dissolution Electrode polarization Hydrogen evolution Magnesium base alloys Mg alloys Negative difference effect (NDE) Surface properties
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